./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/fibonacci.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/fibonacci.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7f56768e1b40ef6b1b210f9cfb796e99d1f27ee48ed204adfea165b19bcc995e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:41:03,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:41:03,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:41:03,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:41:03,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:41:03,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:41:03,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:41:03,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:41:03,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:41:03,143 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:41:03,146 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:41:03,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:41:03,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:41:03,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:41:03,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:41:03,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:41:03,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:41:03,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:41:03,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:41:03,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:41:03,182 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:41:03,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:41:03,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:41:03,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:41:03,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:41:03,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:41:03,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:41:03,199 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:41:03,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:41:03,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:41:03,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:41:03,204 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:41:03,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:41:03,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:41:03,211 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:41:03,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:41:03,212 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:41:03,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:41:03,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:41:03,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:41:03,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:41:03,216 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 19:41:03,266 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:41:03,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:41:03,269 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:41:03,270 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:41:03,271 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:41:03,271 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:41:03,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:41:03,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:41:03,273 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:41:03,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:41:03,275 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:41:03,275 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:41:03,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:41:03,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:41:03,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:41:03,276 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 19:41:03,276 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 19:41:03,276 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 19:41:03,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:41:03,277 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 19:41:03,277 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:41:03,277 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:41:03,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:41:03,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:41:03,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:41:03,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:41:03,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:41:03,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:41:03,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:41:03,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:41:03,282 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f56768e1b40ef6b1b210f9cfb796e99d1f27ee48ed204adfea165b19bcc995e [2022-11-18 19:41:03,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:41:03,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:41:03,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:41:03,638 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:41:03,639 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:41:03,641 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/fibonacci.wvr.c [2022-11-18 19:41:03,715 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/data/5b1286302/4e614bd1558a4cc99e346a9d72a3a39e/FLAGc65ad4260 [2022-11-18 19:41:04,276 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:41:04,276 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/sv-benchmarks/c/weaver/fibonacci.wvr.c [2022-11-18 19:41:04,284 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/data/5b1286302/4e614bd1558a4cc99e346a9d72a3a39e/FLAGc65ad4260 [2022-11-18 19:41:04,634 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/data/5b1286302/4e614bd1558a4cc99e346a9d72a3a39e [2022-11-18 19:41:04,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:41:04,643 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:41:04,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:41:04,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:41:04,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:41:04,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:41:04" (1/1) ... [2022-11-18 19:41:04,653 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@348eef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:04, skipping insertion in model container [2022-11-18 19:41:04,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:41:04" (1/1) ... [2022-11-18 19:41:04,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:41:04,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:41:04,965 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/sv-benchmarks/c/weaver/fibonacci.wvr.c[2330,2343] [2022-11-18 19:41:04,988 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:41:05,002 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:41:05,050 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/sv-benchmarks/c/weaver/fibonacci.wvr.c[2330,2343] [2022-11-18 19:41:05,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:41:05,082 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:41:05,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:05 WrapperNode [2022-11-18 19:41:05,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:41:05,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:41:05,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:41:05,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:41:05,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:05" (1/1) ... [2022-11-18 19:41:05,118 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:05" (1/1) ... [2022-11-18 19:41:05,153 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 162 [2022-11-18 19:41:05,154 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:41:05,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:41:05,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:41:05,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:41:05,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:05" (1/1) ... [2022-11-18 19:41:05,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:05" (1/1) ... [2022-11-18 19:41:05,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:05" (1/1) ... [2022-11-18 19:41:05,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:05" (1/1) ... [2022-11-18 19:41:05,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:05" (1/1) ... [2022-11-18 19:41:05,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:05" (1/1) ... [2022-11-18 19:41:05,182 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:05" (1/1) ... [2022-11-18 19:41:05,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:05" (1/1) ... [2022-11-18 19:41:05,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:41:05,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:41:05,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:41:05,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:41:05,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:05" (1/1) ... [2022-11-18 19:41:05,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:41:05,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:05,241 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:41:05,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:41:05,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:41:05,301 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 19:41:05,301 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 19:41:05,302 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 19:41:05,302 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 19:41:05,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:41:05,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:41:05,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:41:05,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:41:05,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:41:05,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:41:05,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:41:05,304 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:41:05,424 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:41:05,426 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:41:05,848 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:41:05,860 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:41:05,860 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 19:41:05,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:41:05 BoogieIcfgContainer [2022-11-18 19:41:05,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:41:05,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:41:05,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:41:05,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:41:05,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:41:04" (1/3) ... [2022-11-18 19:41:05,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6889fa4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:41:05, skipping insertion in model container [2022-11-18 19:41:05,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:05" (2/3) ... [2022-11-18 19:41:05,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6889fa4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:41:05, skipping insertion in model container [2022-11-18 19:41:05,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:41:05" (3/3) ... [2022-11-18 19:41:05,875 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2022-11-18 19:41:05,903 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:41:05,904 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-18 19:41:05,904 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:41:06,171 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 19:41:06,244 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-18 19:41:06,261 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 225 places, 232 transitions, 480 flow [2022-11-18 19:41:06,264 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 225 places, 232 transitions, 480 flow [2022-11-18 19:41:06,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 232 transitions, 480 flow [2022-11-18 19:41:06,427 INFO L130 PetriNetUnfolder]: 14/230 cut-off events. [2022-11-18 19:41:06,428 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 19:41:06,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 230 events. 14/230 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 367 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 147. Up to 2 conditions per place. [2022-11-18 19:41:06,444 INFO L119 LiptonReduction]: Number of co-enabled transitions 11748 [2022-11-18 19:41:15,833 INFO L134 LiptonReduction]: Checked pairs total: 10091 [2022-11-18 19:41:15,833 INFO L136 LiptonReduction]: Total number of compositions: 264 [2022-11-18 19:41:15,846 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 27 transitions, 70 flow [2022-11-18 19:41:15,874 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:15,897 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:41:15,914 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@294aa0ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:41:15,914 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-18 19:41:15,918 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:15,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-18 19:41:15,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:15,925 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-18 19:41:15,925 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:15,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:15,936 INFO L85 PathProgramCache]: Analyzing trace with hash 955, now seen corresponding path program 1 times [2022-11-18 19:41:15,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:15,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196417546] [2022-11-18 19:41:15,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:15,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:16,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:16,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:16,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196417546] [2022-11-18 19:41:16,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196417546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:16,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:16,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-18 19:41:16,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794295898] [2022-11-18 19:41:16,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:16,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:41:16,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:16,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:41:16,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:41:16,128 INFO L87 Difference]: Start difference. First operand has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:16,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:16,199 INFO L93 Difference]: Finished difference Result 64 states and 151 transitions. [2022-11-18 19:41:16,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:41:16,218 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-11-18 19:41:16,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:16,233 INFO L225 Difference]: With dead ends: 64 [2022-11-18 19:41:16,233 INFO L226 Difference]: Without dead ends: 64 [2022-11-18 19:41:16,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:41:16,240 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:16,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:41:16,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-18 19:41:16,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-11-18 19:41:16,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 57 states have (on average 2.6491228070175437) internal successors, (151), 63 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:16,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 151 transitions. [2022-11-18 19:41:16,299 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 151 transitions. Word has length 1 [2022-11-18 19:41:16,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:16,299 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 151 transitions. [2022-11-18 19:41:16,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:16,306 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 151 transitions. [2022-11-18 19:41:16,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 19:41:16,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:16,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 19:41:16,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:41:16,308 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:16,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:16,309 INFO L85 PathProgramCache]: Analyzing trace with hash 938000, now seen corresponding path program 1 times [2022-11-18 19:41:16,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:16,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139528947] [2022-11-18 19:41:16,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:16,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:16,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:16,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:16,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139528947] [2022-11-18 19:41:16,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139528947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:16,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:16,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:41:16,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130581917] [2022-11-18 19:41:16,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:16,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:41:16,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:16,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:41:16,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:41:16,635 INFO L87 Difference]: Start difference. First operand 64 states and 151 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:16,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:16,681 INFO L93 Difference]: Finished difference Result 58 states and 139 transitions. [2022-11-18 19:41:16,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:41:16,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-18 19:41:16,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:16,683 INFO L225 Difference]: With dead ends: 58 [2022-11-18 19:41:16,683 INFO L226 Difference]: Without dead ends: 58 [2022-11-18 19:41:16,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:41:16,685 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:16,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:41:16,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-18 19:41:16,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-11-18 19:41:16,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 2.6226415094339623) internal successors, (139), 57 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:16,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 139 transitions. [2022-11-18 19:41:16,693 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 139 transitions. Word has length 3 [2022-11-18 19:41:16,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:16,694 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 139 transitions. [2022-11-18 19:41:16,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:16,694 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 139 transitions. [2022-11-18 19:41:16,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 19:41:16,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:16,695 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 19:41:16,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:41:16,695 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:16,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:16,696 INFO L85 PathProgramCache]: Analyzing trace with hash 938001, now seen corresponding path program 1 times [2022-11-18 19:41:16,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:16,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305607356] [2022-11-18 19:41:16,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:16,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:16,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:16,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:16,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305607356] [2022-11-18 19:41:16,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305607356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:16,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:16,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:41:16,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488595972] [2022-11-18 19:41:16,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:16,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:41:16,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:16,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:41:16,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:41:16,755 INFO L87 Difference]: Start difference. First operand 58 states and 139 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:16,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:16,782 INFO L93 Difference]: Finished difference Result 52 states and 127 transitions. [2022-11-18 19:41:16,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:41:16,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-18 19:41:16,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:16,787 INFO L225 Difference]: With dead ends: 52 [2022-11-18 19:41:16,790 INFO L226 Difference]: Without dead ends: 52 [2022-11-18 19:41:16,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:41:16,792 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:16,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:41:16,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-18 19:41:16,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-18 19:41:16,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 49 states have (on average 2.5918367346938775) internal successors, (127), 51 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:16,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 127 transitions. [2022-11-18 19:41:16,806 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 127 transitions. Word has length 3 [2022-11-18 19:41:16,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:16,807 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 127 transitions. [2022-11-18 19:41:16,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:16,807 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 127 transitions. [2022-11-18 19:41:16,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 19:41:16,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:16,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 19:41:16,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:41:16,808 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:16,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:16,809 INFO L85 PathProgramCache]: Analyzing trace with hash 901441167, now seen corresponding path program 1 times [2022-11-18 19:41:16,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:16,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376603026] [2022-11-18 19:41:16,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:16,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:17,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:17,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:17,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376603026] [2022-11-18 19:41:17,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376603026] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:17,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:17,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:41:17,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383190048] [2022-11-18 19:41:17,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:17,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:41:17,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:17,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:41:17,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:41:17,060 INFO L87 Difference]: Start difference. First operand 52 states and 127 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:17,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:17,096 INFO L93 Difference]: Finished difference Result 43 states and 100 transitions. [2022-11-18 19:41:17,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:41:17,096 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-18 19:41:17,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:17,099 INFO L225 Difference]: With dead ends: 43 [2022-11-18 19:41:17,099 INFO L226 Difference]: Without dead ends: 43 [2022-11-18 19:41:17,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:41:17,103 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:17,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:41:17,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-18 19:41:17,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-18 19:41:17,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 2.4390243902439024) internal successors, (100), 42 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:17,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 100 transitions. [2022-11-18 19:41:17,124 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 100 transitions. Word has length 5 [2022-11-18 19:41:17,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:17,125 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 100 transitions. [2022-11-18 19:41:17,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:17,126 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 100 transitions. [2022-11-18 19:41:17,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 19:41:17,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:17,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 19:41:17,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:41:17,127 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:17,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:17,128 INFO L85 PathProgramCache]: Analyzing trace with hash 901441166, now seen corresponding path program 1 times [2022-11-18 19:41:17,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:17,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070185431] [2022-11-18 19:41:17,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:17,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:17,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:17,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:17,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070185431] [2022-11-18 19:41:17,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070185431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:17,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:17,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:41:17,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522760322] [2022-11-18 19:41:17,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:17,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:41:17,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:17,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:41:17,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:41:17,265 INFO L87 Difference]: Start difference. First operand 43 states and 100 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:17,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:17,305 INFO L93 Difference]: Finished difference Result 34 states and 73 transitions. [2022-11-18 19:41:17,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:41:17,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-18 19:41:17,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:17,307 INFO L225 Difference]: With dead ends: 34 [2022-11-18 19:41:17,307 INFO L226 Difference]: Without dead ends: 34 [2022-11-18 19:41:17,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:41:17,309 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:17,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:41:17,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-18 19:41:17,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-18 19:41:17,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:17,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 73 transitions. [2022-11-18 19:41:17,313 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 73 transitions. Word has length 5 [2022-11-18 19:41:17,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:17,314 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 73 transitions. [2022-11-18 19:41:17,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:17,315 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 73 transitions. [2022-11-18 19:41:17,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 19:41:17,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:17,316 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:17,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:41:17,316 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:17,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:17,317 INFO L85 PathProgramCache]: Analyzing trace with hash 281439982, now seen corresponding path program 1 times [2022-11-18 19:41:17,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:17,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799571339] [2022-11-18 19:41:17,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:17,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:17,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:17,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:17,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:17,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799571339] [2022-11-18 19:41:17,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799571339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:17,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:17,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:41:17,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536622241] [2022-11-18 19:41:17,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:17,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:41:17,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:17,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:41:17,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:41:17,660 INFO L87 Difference]: Start difference. First operand 34 states and 73 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:17,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:17,776 INFO L93 Difference]: Finished difference Result 67 states and 139 transitions. [2022-11-18 19:41:17,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:41:17,777 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 19:41:17,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:17,778 INFO L225 Difference]: With dead ends: 67 [2022-11-18 19:41:17,778 INFO L226 Difference]: Without dead ends: 62 [2022-11-18 19:41:17,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:41:17,779 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 18 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:17,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 10 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:41:17,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-18 19:41:17,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 52. [2022-11-18 19:41:17,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 2.3137254901960786) internal successors, (118), 51 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:17,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 118 transitions. [2022-11-18 19:41:17,785 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 118 transitions. Word has length 13 [2022-11-18 19:41:17,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:17,785 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 118 transitions. [2022-11-18 19:41:17,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:17,786 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 118 transitions. [2022-11-18 19:41:17,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 19:41:17,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:17,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:17,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:41:17,788 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:17,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:17,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1414512882, now seen corresponding path program 2 times [2022-11-18 19:41:17,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:17,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792416324] [2022-11-18 19:41:17,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:17,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:17,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:17,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:17,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792416324] [2022-11-18 19:41:17,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792416324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:17,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:17,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:41:17,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208121910] [2022-11-18 19:41:17,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:17,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:41:17,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:17,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:41:17,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:41:17,983 INFO L87 Difference]: Start difference. First operand 52 states and 118 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:18,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:18,093 INFO L93 Difference]: Finished difference Result 61 states and 130 transitions. [2022-11-18 19:41:18,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:41:18,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 19:41:18,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:18,094 INFO L225 Difference]: With dead ends: 61 [2022-11-18 19:41:18,095 INFO L226 Difference]: Without dead ends: 56 [2022-11-18 19:41:18,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:41:18,095 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 12 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:18,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 10 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:41:18,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-18 19:41:18,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-11-18 19:41:18,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 2.2545454545454544) internal successors, (124), 55 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:18,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 124 transitions. [2022-11-18 19:41:18,100 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 124 transitions. Word has length 13 [2022-11-18 19:41:18,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:18,100 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 124 transitions. [2022-11-18 19:41:18,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:18,101 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 124 transitions. [2022-11-18 19:41:18,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 19:41:18,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:18,101 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:18,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:41:18,102 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:18,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:18,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1355176945, now seen corresponding path program 1 times [2022-11-18 19:41:18,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:18,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168224877] [2022-11-18 19:41:18,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:18,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:18,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:18,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:18,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:18,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168224877] [2022-11-18 19:41:18,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168224877] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:18,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796566308] [2022-11-18 19:41:18,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:18,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:18,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:18,198 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:18,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:41:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:18,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:41:18,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:18,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:18,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:18,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:18,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796566308] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:18,475 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:18,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-11-18 19:41:18,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693507010] [2022-11-18 19:41:18,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:18,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:41:18,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:18,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:41:18,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:41:18,477 INFO L87 Difference]: Start difference. First operand 56 states and 124 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:18,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:18,623 INFO L93 Difference]: Finished difference Result 76 states and 168 transitions. [2022-11-18 19:41:18,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:41:18,624 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 19:41:18,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:18,624 INFO L225 Difference]: With dead ends: 76 [2022-11-18 19:41:18,625 INFO L226 Difference]: Without dead ends: 76 [2022-11-18 19:41:18,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:41:18,626 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 49 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:18,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 11 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:41:18,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-18 19:41:18,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 52. [2022-11-18 19:41:18,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 2.392156862745098) internal successors, (122), 51 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:18,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 122 transitions. [2022-11-18 19:41:18,631 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 122 transitions. Word has length 14 [2022-11-18 19:41:18,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:18,631 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 122 transitions. [2022-11-18 19:41:18,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:18,631 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 122 transitions. [2022-11-18 19:41:18,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 19:41:18,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:18,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:18,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:18,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:18,833 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:18,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:18,834 INFO L85 PathProgramCache]: Analyzing trace with hash -106932593, now seen corresponding path program 1 times [2022-11-18 19:41:18,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:18,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507110027] [2022-11-18 19:41:18,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:18,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:18,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:18,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507110027] [2022-11-18 19:41:18,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507110027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:18,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:18,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:41:18,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123338882] [2022-11-18 19:41:18,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:18,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:41:18,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:18,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:41:18,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:41:18,946 INFO L87 Difference]: Start difference. First operand 52 states and 122 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:19,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:19,036 INFO L93 Difference]: Finished difference Result 80 states and 171 transitions. [2022-11-18 19:41:19,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:41:19,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 19:41:19,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:19,038 INFO L225 Difference]: With dead ends: 80 [2022-11-18 19:41:19,038 INFO L226 Difference]: Without dead ends: 70 [2022-11-18 19:41:19,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:41:19,039 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 24 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:19,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 8 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:41:19,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-18 19:41:19,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 52. [2022-11-18 19:41:19,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 2.3137254901960786) internal successors, (118), 51 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:19,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 118 transitions. [2022-11-18 19:41:19,044 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 118 transitions. Word has length 14 [2022-11-18 19:41:19,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:19,045 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 118 transitions. [2022-11-18 19:41:19,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:19,045 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 118 transitions. [2022-11-18 19:41:19,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 19:41:19,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:19,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:19,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:41:19,047 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:19,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:19,047 INFO L85 PathProgramCache]: Analyzing trace with hash 190976987, now seen corresponding path program 2 times [2022-11-18 19:41:19,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:19,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176657998] [2022-11-18 19:41:19,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:19,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:19,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:19,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:19,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176657998] [2022-11-18 19:41:19,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176657998] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:19,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545855817] [2022-11-18 19:41:19,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:41:19,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:19,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:19,123 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:19,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:41:19,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:41:19,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:19,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:41:19,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:19,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:19,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:19,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:19,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545855817] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:19,328 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:19,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 19:41:19,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212916084] [2022-11-18 19:41:19,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:19,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:41:19,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:19,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:41:19,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:41:19,330 INFO L87 Difference]: Start difference. First operand 52 states and 118 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:19,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:19,568 INFO L93 Difference]: Finished difference Result 98 states and 212 transitions. [2022-11-18 19:41:19,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:41:19,568 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 19:41:19,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:19,569 INFO L225 Difference]: With dead ends: 98 [2022-11-18 19:41:19,570 INFO L226 Difference]: Without dead ends: 98 [2022-11-18 19:41:19,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:41:19,571 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 65 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:19,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 7 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:41:19,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-18 19:41:19,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 54. [2022-11-18 19:41:19,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 2.3962264150943398) internal successors, (127), 53 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:19,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 127 transitions. [2022-11-18 19:41:19,575 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 127 transitions. Word has length 14 [2022-11-18 19:41:19,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:19,576 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 127 transitions. [2022-11-18 19:41:19,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:19,576 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 127 transitions. [2022-11-18 19:41:19,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 19:41:19,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:19,577 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:19,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 19:41:19,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 19:41:19,778 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:19,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:19,778 INFO L85 PathProgramCache]: Analyzing trace with hash -618369639, now seen corresponding path program 2 times [2022-11-18 19:41:19,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:19,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898622179] [2022-11-18 19:41:19,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:19,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:19,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:19,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:19,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898622179] [2022-11-18 19:41:19,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898622179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:19,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:19,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:41:19,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838273520] [2022-11-18 19:41:19,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:19,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:41:19,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:19,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:41:19,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:41:19,887 INFO L87 Difference]: Start difference. First operand 54 states and 127 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:19,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:19,985 INFO L93 Difference]: Finished difference Result 92 states and 200 transitions. [2022-11-18 19:41:19,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:41:19,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 19:41:19,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:19,987 INFO L225 Difference]: With dead ends: 92 [2022-11-18 19:41:19,987 INFO L226 Difference]: Without dead ends: 92 [2022-11-18 19:41:19,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:41:19,988 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 28 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:19,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 6 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:41:19,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-18 19:41:19,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 56. [2022-11-18 19:41:19,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 2.4363636363636365) internal successors, (134), 55 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:19,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 134 transitions. [2022-11-18 19:41:19,995 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 134 transitions. Word has length 14 [2022-11-18 19:41:19,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:19,995 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 134 transitions. [2022-11-18 19:41:19,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:19,995 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 134 transitions. [2022-11-18 19:41:19,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 19:41:20,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:20,000 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:20,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:41:20,000 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:20,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:20,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1997170479, now seen corresponding path program 3 times [2022-11-18 19:41:20,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:20,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371125978] [2022-11-18 19:41:20,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:20,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:20,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:20,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:20,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371125978] [2022-11-18 19:41:20,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371125978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:20,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:20,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:41:20,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810797981] [2022-11-18 19:41:20,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:20,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:41:20,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:20,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:41:20,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:41:20,102 INFO L87 Difference]: Start difference. First operand 56 states and 134 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:20,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:20,200 INFO L93 Difference]: Finished difference Result 80 states and 175 transitions. [2022-11-18 19:41:20,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:41:20,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 19:41:20,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:20,202 INFO L225 Difference]: With dead ends: 80 [2022-11-18 19:41:20,202 INFO L226 Difference]: Without dead ends: 74 [2022-11-18 19:41:20,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:41:20,203 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 24 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:20,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 5 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:41:20,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-18 19:41:20,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2022-11-18 19:41:20,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 2.3636363636363638) internal successors, (130), 55 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:20,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 130 transitions. [2022-11-18 19:41:20,215 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 130 transitions. Word has length 14 [2022-11-18 19:41:20,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:20,216 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 130 transitions. [2022-11-18 19:41:20,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:20,216 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 130 transitions. [2022-11-18 19:41:20,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 19:41:20,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:20,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:20,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:41:20,221 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:20,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:20,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1918666767, now seen corresponding path program 4 times [2022-11-18 19:41:20,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:20,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126379534] [2022-11-18 19:41:20,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:20,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:20,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:20,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:20,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126379534] [2022-11-18 19:41:20,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126379534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:20,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:20,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:41:20,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364122428] [2022-11-18 19:41:20,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:20,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:41:20,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:20,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:41:20,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:41:20,312 INFO L87 Difference]: Start difference. First operand 56 states and 130 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:20,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:20,411 INFO L93 Difference]: Finished difference Result 76 states and 173 transitions. [2022-11-18 19:41:20,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:41:20,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 19:41:20,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:20,413 INFO L225 Difference]: With dead ends: 76 [2022-11-18 19:41:20,413 INFO L226 Difference]: Without dead ends: 76 [2022-11-18 19:41:20,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:41:20,415 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 22 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:20,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 9 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:41:20,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-18 19:41:20,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 54. [2022-11-18 19:41:20,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 2.3962264150943398) internal successors, (127), 53 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:20,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 127 transitions. [2022-11-18 19:41:20,423 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 127 transitions. Word has length 14 [2022-11-18 19:41:20,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:20,423 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 127 transitions. [2022-11-18 19:41:20,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:20,424 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 127 transitions. [2022-11-18 19:41:20,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 19:41:20,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:20,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:20,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:41:20,425 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:20,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:20,425 INFO L85 PathProgramCache]: Analyzing trace with hash -861102185, now seen corresponding path program 3 times [2022-11-18 19:41:20,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:20,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210646588] [2022-11-18 19:41:20,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:20,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:20,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:20,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:20,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210646588] [2022-11-18 19:41:20,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210646588] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:20,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184758385] [2022-11-18 19:41:20,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:41:20,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:20,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:20,506 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:20,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:41:20,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 19:41:20,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:20,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:41:20,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:20,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:20,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:20,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:20,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184758385] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:20,718 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:20,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 19:41:20,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457712888] [2022-11-18 19:41:20,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:20,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:41:20,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:20,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:41:20,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:41:20,725 INFO L87 Difference]: Start difference. First operand 54 states and 127 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:20,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:20,867 INFO L93 Difference]: Finished difference Result 76 states and 164 transitions. [2022-11-18 19:41:20,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:41:20,868 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 19:41:20,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:20,869 INFO L225 Difference]: With dead ends: 76 [2022-11-18 19:41:20,869 INFO L226 Difference]: Without dead ends: 76 [2022-11-18 19:41:20,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:41:20,869 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 36 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:20,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 8 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:41:20,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-18 19:41:20,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 54. [2022-11-18 19:41:20,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 2.3962264150943398) internal successors, (127), 53 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:20,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 127 transitions. [2022-11-18 19:41:20,873 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 127 transitions. Word has length 14 [2022-11-18 19:41:20,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:20,873 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 127 transitions. [2022-11-18 19:41:20,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:20,873 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 127 transitions. [2022-11-18 19:41:20,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 19:41:20,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:20,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:20,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:21,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 19:41:21,075 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:21,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:21,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1670448811, now seen corresponding path program 5 times [2022-11-18 19:41:21,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:21,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798827011] [2022-11-18 19:41:21,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:21,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:21,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:21,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:21,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798827011] [2022-11-18 19:41:21,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798827011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:21,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:21,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:41:21,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974646629] [2022-11-18 19:41:21,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:21,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:41:21,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:21,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:41:21,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:41:21,207 INFO L87 Difference]: Start difference. First operand 54 states and 127 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:21,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:21,315 INFO L93 Difference]: Finished difference Result 84 states and 176 transitions. [2022-11-18 19:41:21,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:41:21,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 19:41:21,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:21,317 INFO L225 Difference]: With dead ends: 84 [2022-11-18 19:41:21,317 INFO L226 Difference]: Without dead ends: 84 [2022-11-18 19:41:21,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:41:21,318 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 24 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:21,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 5 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:41:21,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-18 19:41:21,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 54. [2022-11-18 19:41:21,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 2.3962264150943398) internal successors, (127), 53 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:21,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 127 transitions. [2022-11-18 19:41:21,322 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 127 transitions. Word has length 14 [2022-11-18 19:41:21,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:21,323 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 127 transitions. [2022-11-18 19:41:21,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:21,323 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 127 transitions. [2022-11-18 19:41:21,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 19:41:21,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:21,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:21,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:41:21,325 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:21,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:21,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1245717645, now seen corresponding path program 6 times [2022-11-18 19:41:21,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:21,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680696301] [2022-11-18 19:41:21,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:21,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:21,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:21,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:21,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680696301] [2022-11-18 19:41:21,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680696301] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:21,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:21,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:41:21,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891543836] [2022-11-18 19:41:21,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:21,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:41:21,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:21,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:41:21,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:41:21,403 INFO L87 Difference]: Start difference. First operand 54 states and 127 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:21,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:21,512 INFO L93 Difference]: Finished difference Result 62 states and 134 transitions. [2022-11-18 19:41:21,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:41:21,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 19:41:21,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:21,513 INFO L225 Difference]: With dead ends: 62 [2022-11-18 19:41:21,513 INFO L226 Difference]: Without dead ends: 54 [2022-11-18 19:41:21,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:41:21,514 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:21,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 7 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:41:21,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-18 19:41:21,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2022-11-18 19:41:21,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 2.2745098039215685) internal successors, (116), 51 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:21,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 116 transitions. [2022-11-18 19:41:21,518 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 116 transitions. Word has length 14 [2022-11-18 19:41:21,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:21,519 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 116 transitions. [2022-11-18 19:41:21,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:21,519 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 116 transitions. [2022-11-18 19:41:21,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 19:41:21,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:21,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:21,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 19:41:21,520 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:21,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:21,521 INFO L85 PathProgramCache]: Analyzing trace with hash 697550222, now seen corresponding path program 1 times [2022-11-18 19:41:21,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:21,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003326044] [2022-11-18 19:41:21,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:21,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:22,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:22,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:22,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003326044] [2022-11-18 19:41:22,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003326044] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:22,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354180491] [2022-11-18 19:41:22,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:22,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:22,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:22,149 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:22,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:41:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:22,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-18 19:41:22,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:22,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:22,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:22,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:22,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354180491] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:22,690 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:22,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-11-18 19:41:22,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736255518] [2022-11-18 19:41:22,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:22,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:41:22,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:22,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:41:22,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:41:22,694 INFO L87 Difference]: Start difference. First operand 52 states and 116 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:22,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:22,894 INFO L93 Difference]: Finished difference Result 77 states and 167 transitions. [2022-11-18 19:41:22,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:41:22,895 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-18 19:41:22,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:22,896 INFO L225 Difference]: With dead ends: 77 [2022-11-18 19:41:22,896 INFO L226 Difference]: Without dead ends: 72 [2022-11-18 19:41:22,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:41:22,897 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 28 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:22,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 24 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:41:22,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-18 19:41:22,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2022-11-18 19:41:22,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 2.2686567164179103) internal successors, (152), 67 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:22,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 152 transitions. [2022-11-18 19:41:22,901 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 152 transitions. Word has length 15 [2022-11-18 19:41:22,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:22,901 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 152 transitions. [2022-11-18 19:41:22,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:22,902 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 152 transitions. [2022-11-18 19:41:22,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 19:41:22,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:22,905 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:22,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:23,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 19:41:23,106 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:23,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:23,106 INFO L85 PathProgramCache]: Analyzing trace with hash 186113176, now seen corresponding path program 2 times [2022-11-18 19:41:23,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:23,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366030708] [2022-11-18 19:41:23,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:23,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:23,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:23,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:23,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366030708] [2022-11-18 19:41:23,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366030708] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:23,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397457045] [2022-11-18 19:41:23,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:41:23,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:23,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:23,620 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:23,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:41:23,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:41:23,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:23,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-18 19:41:23,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:23,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:23,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:24,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:24,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397457045] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:24,129 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:24,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 19:41:24,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031691567] [2022-11-18 19:41:24,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:24,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:41:24,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:24,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:41:24,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:41:24,132 INFO L87 Difference]: Start difference. First operand 68 states and 152 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:24,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:24,377 INFO L93 Difference]: Finished difference Result 91 states and 193 transitions. [2022-11-18 19:41:24,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:41:24,377 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-18 19:41:24,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:24,378 INFO L225 Difference]: With dead ends: 91 [2022-11-18 19:41:24,379 INFO L226 Difference]: Without dead ends: 86 [2022-11-18 19:41:24,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:41:24,379 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 39 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:24,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 19 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:41:24,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-18 19:41:24,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 70. [2022-11-18 19:41:24,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 2.3333333333333335) internal successors, (161), 69 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:24,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 161 transitions. [2022-11-18 19:41:24,387 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 161 transitions. Word has length 15 [2022-11-18 19:41:24,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:24,388 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 161 transitions. [2022-11-18 19:41:24,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:24,388 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 161 transitions. [2022-11-18 19:41:24,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 19:41:24,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:24,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:24,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:24,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:24,590 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:24,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:24,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1044987706, now seen corresponding path program 3 times [2022-11-18 19:41:24,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:24,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688714215] [2022-11-18 19:41:24,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:24,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:25,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:25,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:25,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688714215] [2022-11-18 19:41:25,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688714215] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:25,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728522225] [2022-11-18 19:41:25,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:41:25,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:25,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:25,182 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:25,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:41:25,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 19:41:25,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:25,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-18 19:41:25,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:25,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:25,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:25,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:25,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728522225] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:25,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:25,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 19:41:25,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078201300] [2022-11-18 19:41:25,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:25,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:41:25,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:25,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:41:25,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:41:25,684 INFO L87 Difference]: Start difference. First operand 70 states and 161 transitions. Second operand has 12 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:25,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:25,923 INFO L93 Difference]: Finished difference Result 81 states and 177 transitions. [2022-11-18 19:41:25,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:41:25,924 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-18 19:41:25,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:25,925 INFO L225 Difference]: With dead ends: 81 [2022-11-18 19:41:25,925 INFO L226 Difference]: Without dead ends: 76 [2022-11-18 19:41:25,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:41:25,926 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 33 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:25,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 20 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:41:25,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-18 19:41:25,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2022-11-18 19:41:25,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 2.3333333333333335) internal successors, (161), 69 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:25,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 161 transitions. [2022-11-18 19:41:25,930 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 161 transitions. Word has length 15 [2022-11-18 19:41:25,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:25,930 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 161 transitions. [2022-11-18 19:41:25,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:25,931 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 161 transitions. [2022-11-18 19:41:25,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 19:41:25,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:25,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:25,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:26,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:26,139 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:26,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:26,139 INFO L85 PathProgramCache]: Analyzing trace with hash -43079602, now seen corresponding path program 4 times [2022-11-18 19:41:26,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:26,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373565135] [2022-11-18 19:41:26,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:26,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:26,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:26,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:26,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373565135] [2022-11-18 19:41:26,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373565135] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:26,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890607616] [2022-11-18 19:41:26,622 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:41:26,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:26,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:26,624 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:26,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:41:26,751 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:41:26,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:26,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-18 19:41:26,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:26,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:26,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:27,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:27,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890607616] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:27,178 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:27,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 19:41:27,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329462627] [2022-11-18 19:41:27,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:27,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:41:27,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:27,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:41:27,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:41:27,181 INFO L87 Difference]: Start difference. First operand 70 states and 161 transitions. Second operand has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:27,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:27,414 INFO L93 Difference]: Finished difference Result 97 states and 215 transitions. [2022-11-18 19:41:27,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:41:27,415 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-18 19:41:27,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:27,416 INFO L225 Difference]: With dead ends: 97 [2022-11-18 19:41:27,416 INFO L226 Difference]: Without dead ends: 92 [2022-11-18 19:41:27,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:41:27,417 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 38 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:27,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 22 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:41:27,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-18 19:41:27,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 76. [2022-11-18 19:41:27,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 2.453333333333333) internal successors, (184), 75 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:27,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 184 transitions. [2022-11-18 19:41:27,421 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 184 transitions. Word has length 15 [2022-11-18 19:41:27,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:27,422 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 184 transitions. [2022-11-18 19:41:27,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:27,422 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 184 transitions. [2022-11-18 19:41:27,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 19:41:27,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:27,423 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:27,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-18 19:41:27,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:27,629 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:27,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:27,629 INFO L85 PathProgramCache]: Analyzing trace with hash 815794928, now seen corresponding path program 5 times [2022-11-18 19:41:27,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:27,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760434252] [2022-11-18 19:41:27,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:27,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:28,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:28,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:28,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760434252] [2022-11-18 19:41:28,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760434252] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:28,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342294802] [2022-11-18 19:41:28,114 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:41:28,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:28,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:28,115 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:28,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:41:28,225 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:41:28,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:28,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-18 19:41:28,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:28,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:28,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:28,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:28,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342294802] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:28,538 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:28,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 19:41:28,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33627588] [2022-11-18 19:41:28,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:28,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:41:28,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:28,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:41:28,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:41:28,541 INFO L87 Difference]: Start difference. First operand 76 states and 184 transitions. Second operand has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:28,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:28,763 INFO L93 Difference]: Finished difference Result 99 states and 216 transitions. [2022-11-18 19:41:28,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:41:28,764 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-18 19:41:28,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:28,764 INFO L225 Difference]: With dead ends: 99 [2022-11-18 19:41:28,765 INFO L226 Difference]: Without dead ends: 94 [2022-11-18 19:41:28,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:41:28,765 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 36 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:28,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 24 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:41:28,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-18 19:41:28,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 74. [2022-11-18 19:41:28,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 2.3972602739726026) internal successors, (175), 73 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:28,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 175 transitions. [2022-11-18 19:41:28,769 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 175 transitions. Word has length 15 [2022-11-18 19:41:28,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:28,769 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 175 transitions. [2022-11-18 19:41:28,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:28,770 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 175 transitions. [2022-11-18 19:41:28,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 19:41:28,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:28,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:28,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:28,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:28,976 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:28,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:28,976 INFO L85 PathProgramCache]: Analyzing trace with hash 2002914050, now seen corresponding path program 6 times [2022-11-18 19:41:28,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:28,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476796667] [2022-11-18 19:41:28,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:28,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:29,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:29,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:29,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476796667] [2022-11-18 19:41:29,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476796667] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:29,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178118083] [2022-11-18 19:41:29,390 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:41:29,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:29,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:29,392 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:29,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:41:29,525 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-18 19:41:29,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:29,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-18 19:41:29,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:29,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:29,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:29,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:29,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178118083] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:29,840 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:29,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-11-18 19:41:29,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034768581] [2022-11-18 19:41:29,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:29,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:41:29,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:29,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:41:29,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:41:29,842 INFO L87 Difference]: Start difference. First operand 74 states and 175 transitions. Second operand has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:30,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:30,032 INFO L93 Difference]: Finished difference Result 85 states and 190 transitions. [2022-11-18 19:41:30,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:41:30,033 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-18 19:41:30,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:30,034 INFO L225 Difference]: With dead ends: 85 [2022-11-18 19:41:30,034 INFO L226 Difference]: Without dead ends: 80 [2022-11-18 19:41:30,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:41:30,035 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 17 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:30,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 27 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:41:30,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-18 19:41:30,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2022-11-18 19:41:30,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 2.3506493506493507) internal successors, (181), 77 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:30,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 181 transitions. [2022-11-18 19:41:30,038 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 181 transitions. Word has length 15 [2022-11-18 19:41:30,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:30,039 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 181 transitions. [2022-11-18 19:41:30,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:30,039 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 181 transitions. [2022-11-18 19:41:30,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:41:30,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:30,039 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:30,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:30,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-18 19:41:30,240 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:30,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:30,241 INFO L85 PathProgramCache]: Analyzing trace with hash -133286289, now seen corresponding path program 7 times [2022-11-18 19:41:30,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:30,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158782155] [2022-11-18 19:41:30,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:30,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:30,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:30,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:30,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158782155] [2022-11-18 19:41:30,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158782155] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:30,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826240470] [2022-11-18 19:41:30,339 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:41:30,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:30,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:30,341 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:30,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:41:30,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:30,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:41:30,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:30,531 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:30,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:30,577 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:30,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826240470] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:30,577 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:30,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-18 19:41:30,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186055101] [2022-11-18 19:41:30,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:30,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:41:30,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:30,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:41:30,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:41:30,579 INFO L87 Difference]: Start difference. First operand 78 states and 181 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:30,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:30,841 INFO L93 Difference]: Finished difference Result 110 states and 249 transitions. [2022-11-18 19:41:30,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:41:30,841 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 19:41:30,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:30,842 INFO L225 Difference]: With dead ends: 110 [2022-11-18 19:41:30,842 INFO L226 Difference]: Without dead ends: 110 [2022-11-18 19:41:30,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:41:30,843 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 59 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:30,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 16 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:41:30,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-11-18 19:41:30,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 74. [2022-11-18 19:41:30,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 2.452054794520548) internal successors, (179), 73 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:30,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 179 transitions. [2022-11-18 19:41:30,847 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 179 transitions. Word has length 16 [2022-11-18 19:41:30,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:30,848 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 179 transitions. [2022-11-18 19:41:30,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:30,848 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 179 transitions. [2022-11-18 19:41:30,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:41:30,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:30,849 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:30,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:31,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-18 19:41:31,049 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:31,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:31,050 INFO L85 PathProgramCache]: Analyzing trace with hash -92417041, now seen corresponding path program 8 times [2022-11-18 19:41:31,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:31,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651187654] [2022-11-18 19:41:31,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:31,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:31,160 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:31,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:31,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651187654] [2022-11-18 19:41:31,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651187654] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:31,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713499783] [2022-11-18 19:41:31,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:41:31,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:31,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:31,163 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:31,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:41:31,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:41:31,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:31,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:41:31,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:31,350 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:31,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:31,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:31,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713499783] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:31,407 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:31,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-18 19:41:31,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757634990] [2022-11-18 19:41:31,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:31,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:41:31,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:31,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:41:31,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:41:31,408 INFO L87 Difference]: Start difference. First operand 74 states and 179 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:31,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:31,660 INFO L93 Difference]: Finished difference Result 112 states and 245 transitions. [2022-11-18 19:41:31,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:41:31,661 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 19:41:31,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:31,661 INFO L225 Difference]: With dead ends: 112 [2022-11-18 19:41:31,662 INFO L226 Difference]: Without dead ends: 98 [2022-11-18 19:41:31,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:41:31,663 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 56 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:31,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 20 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:41:31,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-18 19:41:31,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 74. [2022-11-18 19:41:31,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 2.3972602739726026) internal successors, (175), 73 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:31,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 175 transitions. [2022-11-18 19:41:31,667 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 175 transitions. Word has length 16 [2022-11-18 19:41:31,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:31,667 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 175 transitions. [2022-11-18 19:41:31,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:31,668 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 175 transitions. [2022-11-18 19:41:31,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:41:31,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:31,668 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:31,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:31,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:31,881 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:31,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:31,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1931646187, now seen corresponding path program 9 times [2022-11-18 19:41:31,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:31,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760761602] [2022-11-18 19:41:31,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:31,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:31,986 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:31,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:31,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760761602] [2022-11-18 19:41:31,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760761602] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:31,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766660271] [2022-11-18 19:41:31,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:41:31,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:31,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:31,989 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:32,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 19:41:32,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 19:41:32,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:32,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:41:32,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:32,181 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:32,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:32,232 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:32,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766660271] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:32,232 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:32,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-11-18 19:41:32,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728989631] [2022-11-18 19:41:32,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:32,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:41:32,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:32,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:41:32,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:41:32,236 INFO L87 Difference]: Start difference. First operand 74 states and 175 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:32,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:32,516 INFO L93 Difference]: Finished difference Result 140 states and 325 transitions. [2022-11-18 19:41:32,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:41:32,517 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 19:41:32,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:32,518 INFO L225 Difference]: With dead ends: 140 [2022-11-18 19:41:32,518 INFO L226 Difference]: Without dead ends: 140 [2022-11-18 19:41:32,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:41:32,519 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 80 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:32,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 9 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:41:32,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-18 19:41:32,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 84. [2022-11-18 19:41:32,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 2.5301204819277108) internal successors, (210), 83 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:32,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 210 transitions. [2022-11-18 19:41:32,523 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 210 transitions. Word has length 16 [2022-11-18 19:41:32,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:32,523 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 210 transitions. [2022-11-18 19:41:32,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:32,524 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 210 transitions. [2022-11-18 19:41:32,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:41:32,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:32,524 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:32,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:32,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-18 19:41:32,733 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:32,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:32,733 INFO L85 PathProgramCache]: Analyzing trace with hash -873916113, now seen corresponding path program 10 times [2022-11-18 19:41:32,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:32,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097678622] [2022-11-18 19:41:32,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:32,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:32,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:32,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:32,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:32,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097678622] [2022-11-18 19:41:32,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097678622] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:32,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457627554] [2022-11-18 19:41:32,828 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:41:32,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:32,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:32,830 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:32,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 19:41:32,968 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:41:32,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:32,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:41:32,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:33,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:33,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:33,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:33,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457627554] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:33,087 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:33,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2022-11-18 19:41:33,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036887180] [2022-11-18 19:41:33,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:33,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:41:33,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:33,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:41:33,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:41:33,089 INFO L87 Difference]: Start difference. First operand 84 states and 210 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:33,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:33,562 INFO L93 Difference]: Finished difference Result 192 states and 434 transitions. [2022-11-18 19:41:33,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:41:33,563 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 19:41:33,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:33,565 INFO L225 Difference]: With dead ends: 192 [2022-11-18 19:41:33,565 INFO L226 Difference]: Without dead ends: 192 [2022-11-18 19:41:33,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:41:33,566 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 74 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:33,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 11 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:41:33,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-18 19:41:33,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 96. [2022-11-18 19:41:33,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 2.6736842105263157) internal successors, (254), 95 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:33,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 254 transitions. [2022-11-18 19:41:33,571 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 254 transitions. Word has length 16 [2022-11-18 19:41:33,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:33,572 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 254 transitions. [2022-11-18 19:41:33,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:33,572 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 254 transitions. [2022-11-18 19:41:33,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:41:33,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:33,573 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:33,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:33,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:33,774 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:33,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:33,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1683262739, now seen corresponding path program 11 times [2022-11-18 19:41:33,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:33,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103301297] [2022-11-18 19:41:33,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:33,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:33,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:33,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:33,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103301297] [2022-11-18 19:41:33,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103301297] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:33,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114518006] [2022-11-18 19:41:33,877 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:41:33,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:33,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:33,878 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:33,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 19:41:34,010 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-18 19:41:34,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:34,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:41:34,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:34,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:34,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:34,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:34,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114518006] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:34,128 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:34,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2022-11-18 19:41:34,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33456326] [2022-11-18 19:41:34,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:34,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:41:34,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:34,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:41:34,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:41:34,130 INFO L87 Difference]: Start difference. First operand 96 states and 254 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:34,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:34,452 INFO L93 Difference]: Finished difference Result 204 states and 482 transitions. [2022-11-18 19:41:34,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:41:34,453 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 19:41:34,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:34,454 INFO L225 Difference]: With dead ends: 204 [2022-11-18 19:41:34,454 INFO L226 Difference]: Without dead ends: 204 [2022-11-18 19:41:34,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:41:34,455 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 92 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:34,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 8 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:41:34,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-11-18 19:41:34,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 112. [2022-11-18 19:41:34,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.864864864864865) internal successors, (318), 111 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:34,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 318 transitions. [2022-11-18 19:41:34,461 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 318 transitions. Word has length 16 [2022-11-18 19:41:34,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:34,462 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 318 transitions. [2022-11-18 19:41:34,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:34,462 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 318 transitions. [2022-11-18 19:41:34,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:41:34,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:34,463 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:34,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:34,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-18 19:41:34,670 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:34,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:34,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1232903717, now seen corresponding path program 12 times [2022-11-18 19:41:34,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:34,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098596403] [2022-11-18 19:41:34,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:34,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:34,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:34,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:34,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098596403] [2022-11-18 19:41:34,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098596403] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:34,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673356501] [2022-11-18 19:41:34,777 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:41:34,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:34,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:34,788 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:34,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 19:41:34,930 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-18 19:41:34,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:34,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:41:34,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:34,996 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:34,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:35,041 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:35,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673356501] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:35,042 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:35,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2022-11-18 19:41:35,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867801730] [2022-11-18 19:41:35,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:35,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:41:35,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:35,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:41:35,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:41:35,043 INFO L87 Difference]: Start difference. First operand 112 states and 318 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:35,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:35,435 INFO L93 Difference]: Finished difference Result 206 states and 480 transitions. [2022-11-18 19:41:35,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:41:35,435 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 19:41:35,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:35,437 INFO L225 Difference]: With dead ends: 206 [2022-11-18 19:41:35,437 INFO L226 Difference]: Without dead ends: 202 [2022-11-18 19:41:35,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:41:35,438 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 104 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:35,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 9 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:41:35,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-18 19:41:35,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 112. [2022-11-18 19:41:35,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.765765765765766) internal successors, (307), 111 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:35,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 307 transitions. [2022-11-18 19:41:35,445 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 307 transitions. Word has length 16 [2022-11-18 19:41:35,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:35,445 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 307 transitions. [2022-11-18 19:41:35,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:35,446 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 307 transitions. [2022-11-18 19:41:35,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:41:35,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:35,447 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:35,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:35,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-18 19:41:35,647 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:35,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:35,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1172077539, now seen corresponding path program 13 times [2022-11-18 19:41:35,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:35,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144159205] [2022-11-18 19:41:35,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:35,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:35,793 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:35,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:35,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144159205] [2022-11-18 19:41:35,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144159205] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:35,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139844462] [2022-11-18 19:41:35,794 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:41:35,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:35,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:35,796 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:35,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 19:41:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:35,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:41:35,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:36,009 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:36,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:36,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:36,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139844462] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:36,067 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:36,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2022-11-18 19:41:36,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829153777] [2022-11-18 19:41:36,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:36,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:41:36,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:36,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:41:36,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:41:36,069 INFO L87 Difference]: Start difference. First operand 112 states and 307 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:36,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:36,519 INFO L93 Difference]: Finished difference Result 168 states and 414 transitions. [2022-11-18 19:41:36,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 19:41:36,519 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 19:41:36,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:36,520 INFO L225 Difference]: With dead ends: 168 [2022-11-18 19:41:36,520 INFO L226 Difference]: Without dead ends: 166 [2022-11-18 19:41:36,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2022-11-18 19:41:36,521 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 71 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:36,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 18 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:41:36,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-11-18 19:41:36,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 114. [2022-11-18 19:41:36,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 2.725663716814159) internal successors, (308), 113 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:36,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 308 transitions. [2022-11-18 19:41:36,526 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 308 transitions. Word has length 16 [2022-11-18 19:41:36,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:36,527 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 308 transitions. [2022-11-18 19:41:36,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:36,527 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 308 transitions. [2022-11-18 19:41:36,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:41:36,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:36,527 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:36,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:36,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-18 19:41:36,728 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:36,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:36,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1439750637, now seen corresponding path program 14 times [2022-11-18 19:41:36,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:36,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439037816] [2022-11-18 19:41:36,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:36,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:36,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:36,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:36,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439037816] [2022-11-18 19:41:36,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439037816] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:36,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017745476] [2022-11-18 19:41:36,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:41:36,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:36,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:36,838 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:36,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 19:41:36,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:41:36,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:36,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:41:36,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:37,023 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:37,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:37,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:37,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017745476] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:37,064 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:37,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-11-18 19:41:37,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35860440] [2022-11-18 19:41:37,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:37,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:41:37,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:37,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:41:37,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:41:37,066 INFO L87 Difference]: Start difference. First operand 114 states and 308 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:37,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:37,392 INFO L93 Difference]: Finished difference Result 170 states and 401 transitions. [2022-11-18 19:41:37,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:41:37,393 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 19:41:37,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:37,394 INFO L225 Difference]: With dead ends: 170 [2022-11-18 19:41:37,394 INFO L226 Difference]: Without dead ends: 162 [2022-11-18 19:41:37,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-11-18 19:41:37,395 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 97 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:37,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 10 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:41:37,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-18 19:41:37,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 114. [2022-11-18 19:41:37,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 2.690265486725664) internal successors, (304), 113 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:37,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 304 transitions. [2022-11-18 19:41:37,401 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 304 transitions. Word has length 16 [2022-11-18 19:41:37,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:37,401 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 304 transitions. [2022-11-18 19:41:37,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:37,401 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 304 transitions. [2022-11-18 19:41:37,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:41:37,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:37,404 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:37,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:37,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:37,604 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:37,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:37,605 INFO L85 PathProgramCache]: Analyzing trace with hash 611042361, now seen corresponding path program 15 times [2022-11-18 19:41:37,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:37,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172667030] [2022-11-18 19:41:37,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:37,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:37,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:37,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:37,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172667030] [2022-11-18 19:41:37,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172667030] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:37,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221886063] [2022-11-18 19:41:37,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:41:37,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:37,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:37,702 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:37,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 19:41:37,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 19:41:37,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:37,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:41:37,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:37,885 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:37,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:37,924 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:37,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221886063] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:37,925 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:37,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2022-11-18 19:41:37,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055959219] [2022-11-18 19:41:37,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:37,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:41:37,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:37,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:41:37,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:41:37,927 INFO L87 Difference]: Start difference. First operand 114 states and 304 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:38,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:38,266 INFO L93 Difference]: Finished difference Result 256 states and 622 transitions. [2022-11-18 19:41:38,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:41:38,267 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 19:41:38,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:38,268 INFO L225 Difference]: With dead ends: 256 [2022-11-18 19:41:38,268 INFO L226 Difference]: Without dead ends: 256 [2022-11-18 19:41:38,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:41:38,269 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 75 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:38,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 8 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:41:38,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-11-18 19:41:38,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 138. [2022-11-18 19:41:38,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 2.875912408759124) internal successors, (394), 137 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:38,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 394 transitions. [2022-11-18 19:41:38,276 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 394 transitions. Word has length 16 [2022-11-18 19:41:38,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:38,276 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 394 transitions. [2022-11-18 19:41:38,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:38,276 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 394 transitions. [2022-11-18 19:41:38,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:41:38,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:38,277 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:38,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:38,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:38,482 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:38,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:38,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1637931283, now seen corresponding path program 16 times [2022-11-18 19:41:38,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:38,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596339106] [2022-11-18 19:41:38,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:38,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:38,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:38,570 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:38,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:38,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596339106] [2022-11-18 19:41:38,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596339106] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:38,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506341528] [2022-11-18 19:41:38,571 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:41:38,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:38,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:38,572 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:38,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 19:41:38,700 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:41:38,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:38,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:41:38,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:38,758 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:38,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:38,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:41:38,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506341528] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:38,791 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:38,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2022-11-18 19:41:38,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559669565] [2022-11-18 19:41:38,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:38,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:41:38,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:38,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:41:38,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:41:38,794 INFO L87 Difference]: Start difference. First operand 138 states and 394 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:39,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:39,167 INFO L93 Difference]: Finished difference Result 226 states and 553 transitions. [2022-11-18 19:41:39,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 19:41:39,169 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 19:41:39,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:39,170 INFO L225 Difference]: With dead ends: 226 [2022-11-18 19:41:39,170 INFO L226 Difference]: Without dead ends: 224 [2022-11-18 19:41:39,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2022-11-18 19:41:39,171 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 84 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:39,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 11 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:41:39,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-11-18 19:41:39,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 138. [2022-11-18 19:41:39,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 2.8613138686131387) internal successors, (392), 137 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:39,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 392 transitions. [2022-11-18 19:41:39,179 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 392 transitions. Word has length 16 [2022-11-18 19:41:39,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:39,179 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 392 transitions. [2022-11-18 19:41:39,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:39,179 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 392 transitions. [2022-11-18 19:41:39,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:41:39,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:39,180 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:39,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:39,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-11-18 19:41:39,386 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:39,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:39,387 INFO L85 PathProgramCache]: Analyzing trace with hash 803023131, now seen corresponding path program 17 times [2022-11-18 19:41:39,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:39,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866118022] [2022-11-18 19:41:39,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:39,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:39,483 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:39,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:39,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866118022] [2022-11-18 19:41:39,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866118022] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:39,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468080954] [2022-11-18 19:41:39,485 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:41:39,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:39,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:39,487 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:39,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 19:41:39,606 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:41:39,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:39,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:41:39,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:39,663 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:39,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:39,702 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:39,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468080954] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:39,702 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:39,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-18 19:41:39,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972360337] [2022-11-18 19:41:39,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:39,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:41:39,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:39,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:41:39,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:41:39,705 INFO L87 Difference]: Start difference. First operand 138 states and 392 transitions. Second operand has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:40,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:40,071 INFO L93 Difference]: Finished difference Result 222 states and 575 transitions. [2022-11-18 19:41:40,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 19:41:40,072 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 19:41:40,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:40,073 INFO L225 Difference]: With dead ends: 222 [2022-11-18 19:41:40,073 INFO L226 Difference]: Without dead ends: 218 [2022-11-18 19:41:40,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2022-11-18 19:41:40,074 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 90 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:40,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 12 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:41:40,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-11-18 19:41:40,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 154. [2022-11-18 19:41:40,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.9281045751633985) internal successors, (448), 153 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:40,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 448 transitions. [2022-11-18 19:41:40,083 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 448 transitions. Word has length 16 [2022-11-18 19:41:40,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:40,083 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 448 transitions. [2022-11-18 19:41:40,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:40,083 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 448 transitions. [2022-11-18 19:41:40,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:41:40,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:40,084 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:40,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:40,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:40,290 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:40,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:40,290 INFO L85 PathProgramCache]: Analyzing trace with hash -564904009, now seen corresponding path program 18 times [2022-11-18 19:41:40,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:40,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651469877] [2022-11-18 19:41:40,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:40,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:40,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:40,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:40,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651469877] [2022-11-18 19:41:40,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651469877] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:40,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402465070] [2022-11-18 19:41:40,389 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:41:40,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:40,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:40,390 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:40,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 19:41:40,517 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-18 19:41:40,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:40,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:41:40,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:40,561 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:40,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:40,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:40,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402465070] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:40,603 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:40,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-18 19:41:40,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253104179] [2022-11-18 19:41:40,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:40,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:41:40,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:40,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:41:40,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:41:40,605 INFO L87 Difference]: Start difference. First operand 154 states and 448 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:40,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:40,742 INFO L93 Difference]: Finished difference Result 200 states and 553 transitions. [2022-11-18 19:41:40,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:41:40,743 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 19:41:40,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:40,744 INFO L225 Difference]: With dead ends: 200 [2022-11-18 19:41:40,744 INFO L226 Difference]: Without dead ends: 200 [2022-11-18 19:41:40,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:41:40,745 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 53 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:40,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 14 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:41:40,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-18 19:41:40,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 154. [2022-11-18 19:41:40,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.954248366013072) internal successors, (452), 153 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:40,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 452 transitions. [2022-11-18 19:41:40,751 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 452 transitions. Word has length 16 [2022-11-18 19:41:40,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:40,752 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 452 transitions. [2022-11-18 19:41:40,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:40,752 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 452 transitions. [2022-11-18 19:41:40,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:41:40,753 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:40,753 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:40,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:40,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:40,954 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:40,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:40,955 INFO L85 PathProgramCache]: Analyzing trace with hash -838395601, now seen corresponding path program 19 times [2022-11-18 19:41:40,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:40,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567338975] [2022-11-18 19:41:40,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:40,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:40,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:41,049 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:41,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:41,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567338975] [2022-11-18 19:41:41,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567338975] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:41,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117216199] [2022-11-18 19:41:41,050 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:41:41,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:41,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:41,051 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:41,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-18 19:41:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:41,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:41:41,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:41,222 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:41,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:41,258 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:41,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117216199] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:41,260 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:41,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2022-11-18 19:41:41,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890099964] [2022-11-18 19:41:41,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:41,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:41:41,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:41,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:41:41,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:41:41,263 INFO L87 Difference]: Start difference. First operand 154 states and 452 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:41,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:41,521 INFO L93 Difference]: Finished difference Result 244 states and 632 transitions. [2022-11-18 19:41:41,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:41:41,521 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 19:41:41,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:41,523 INFO L225 Difference]: With dead ends: 244 [2022-11-18 19:41:41,523 INFO L226 Difference]: Without dead ends: 244 [2022-11-18 19:41:41,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:41:41,524 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 74 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:41,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 10 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:41:41,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-11-18 19:41:41,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 160. [2022-11-18 19:41:41,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.0) internal successors, (477), 159 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:41,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 477 transitions. [2022-11-18 19:41:41,532 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 477 transitions. Word has length 16 [2022-11-18 19:41:41,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:41,532 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 477 transitions. [2022-11-18 19:41:41,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:41,533 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 477 transitions. [2022-11-18 19:41:41,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:41:41,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:41,534 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:41,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:41,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-18 19:41:41,739 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:41,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:41,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1647742227, now seen corresponding path program 20 times [2022-11-18 19:41:41,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:41,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63097193] [2022-11-18 19:41:41,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:41,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:41,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:41,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:41,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:41,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63097193] [2022-11-18 19:41:41,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63097193] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:41,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165857498] [2022-11-18 19:41:41,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:41:41,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:41,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:41,835 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:41,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-18 19:41:41,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:41:41,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:41,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:41:41,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:42,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:42,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:42,081 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:42,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165857498] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:42,081 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:42,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2022-11-18 19:41:42,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604981652] [2022-11-18 19:41:42,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:42,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:41:42,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:42,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:41:42,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:41:42,085 INFO L87 Difference]: Start difference. First operand 160 states and 477 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:42,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:42,395 INFO L93 Difference]: Finished difference Result 250 states and 681 transitions. [2022-11-18 19:41:42,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:41:42,395 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 19:41:42,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:42,398 INFO L225 Difference]: With dead ends: 250 [2022-11-18 19:41:42,398 INFO L226 Difference]: Without dead ends: 250 [2022-11-18 19:41:42,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:41:42,399 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 81 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:42,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 10 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:41:42,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-18 19:41:42,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 170. [2022-11-18 19:41:42,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 3.06508875739645) internal successors, (518), 169 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:42,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 518 transitions. [2022-11-18 19:41:42,409 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 518 transitions. Word has length 16 [2022-11-18 19:41:42,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:42,409 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 518 transitions. [2022-11-18 19:41:42,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:42,410 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 518 transitions. [2022-11-18 19:41:42,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:41:42,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:42,411 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:42,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-11-18 19:41:42,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-18 19:41:42,616 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:42,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:42,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1268424229, now seen corresponding path program 21 times [2022-11-18 19:41:42,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:42,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744647327] [2022-11-18 19:41:42,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:42,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:42,764 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:42,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:42,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744647327] [2022-11-18 19:41:42,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744647327] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:42,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272753632] [2022-11-18 19:41:42,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:41:42,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:42,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:42,767 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:42,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-18 19:41:42,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 19:41:42,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:42,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:41:42,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:42,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:42,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:43,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:43,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272753632] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:43,022 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:43,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2022-11-18 19:41:43,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118286285] [2022-11-18 19:41:43,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:43,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:41:43,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:43,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:41:43,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:41:43,024 INFO L87 Difference]: Start difference. First operand 170 states and 518 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:43,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:43,360 INFO L93 Difference]: Finished difference Result 212 states and 594 transitions. [2022-11-18 19:41:43,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 19:41:43,360 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 19:41:43,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:43,362 INFO L225 Difference]: With dead ends: 212 [2022-11-18 19:41:43,362 INFO L226 Difference]: Without dead ends: 208 [2022-11-18 19:41:43,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2022-11-18 19:41:43,363 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 64 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:43,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 18 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:41:43,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-18 19:41:43,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 170. [2022-11-18 19:41:43,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 3.0532544378698225) internal successors, (516), 169 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:43,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 516 transitions. [2022-11-18 19:41:43,373 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 516 transitions. Word has length 16 [2022-11-18 19:41:43,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:43,373 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 516 transitions. [2022-11-18 19:41:43,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:43,374 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 516 transitions. [2022-11-18 19:41:43,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:41:43,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:43,375 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:43,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:43,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-18 19:41:43,580 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:43,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:43,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1207598051, now seen corresponding path program 22 times [2022-11-18 19:41:43,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:43,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277500859] [2022-11-18 19:41:43,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:43,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:43,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:43,681 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:43,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:43,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277500859] [2022-11-18 19:41:43,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277500859] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:43,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059742639] [2022-11-18 19:41:43,681 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:41:43,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:43,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:43,692 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:43,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-18 19:41:43,831 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:41:43,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:43,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:41:43,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:43,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:43,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:43,916 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:43,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059742639] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:43,916 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:43,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2022-11-18 19:41:43,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790313028] [2022-11-18 19:41:43,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:43,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:41:43,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:43,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:41:43,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:41:43,919 INFO L87 Difference]: Start difference. First operand 170 states and 516 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:44,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:44,242 INFO L93 Difference]: Finished difference Result 248 states and 661 transitions. [2022-11-18 19:41:44,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:41:44,242 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 19:41:44,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:44,244 INFO L225 Difference]: With dead ends: 248 [2022-11-18 19:41:44,244 INFO L226 Difference]: Without dead ends: 246 [2022-11-18 19:41:44,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:41:44,245 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 69 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:44,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 11 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:41:44,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-11-18 19:41:44,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 160. [2022-11-18 19:41:44,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 2.9748427672955975) internal successors, (473), 159 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:44,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 473 transitions. [2022-11-18 19:41:44,252 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 473 transitions. Word has length 16 [2022-11-18 19:41:44,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:44,252 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 473 transitions. [2022-11-18 19:41:44,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:44,252 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 473 transitions. [2022-11-18 19:41:44,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:41:44,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:44,253 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:44,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:44,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-18 19:41:44,459 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:44,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:44,459 INFO L85 PathProgramCache]: Analyzing trace with hash -646414831, now seen corresponding path program 23 times [2022-11-18 19:41:44,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:44,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369724845] [2022-11-18 19:41:44,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:44,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:44,552 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:44,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:44,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369724845] [2022-11-18 19:41:44,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369724845] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:44,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400915499] [2022-11-18 19:41:44,553 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:41:44,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:44,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:44,554 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:44,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-18 19:41:44,679 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:41:44,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:44,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:41:44,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:44,729 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:44,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:44,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:44,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400915499] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:44,768 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:44,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-11-18 19:41:44,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489295303] [2022-11-18 19:41:44,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:44,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:41:44,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:44,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:41:44,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:41:44,771 INFO L87 Difference]: Start difference. First operand 160 states and 473 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:45,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:45,053 INFO L93 Difference]: Finished difference Result 218 states and 582 transitions. [2022-11-18 19:41:45,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:41:45,054 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 19:41:45,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:45,055 INFO L225 Difference]: With dead ends: 218 [2022-11-18 19:41:45,055 INFO L226 Difference]: Without dead ends: 214 [2022-11-18 19:41:45,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:41:45,056 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 95 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:45,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 11 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:41:45,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-11-18 19:41:45,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 160. [2022-11-18 19:41:45,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 2.9622641509433962) internal successors, (471), 159 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:45,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 471 transitions. [2022-11-18 19:41:45,063 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 471 transitions. Word has length 16 [2022-11-18 19:41:45,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:45,063 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 471 transitions. [2022-11-18 19:41:45,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:45,063 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 471 transitions. [2022-11-18 19:41:45,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:41:45,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:45,064 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:45,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:45,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-18 19:41:45,265 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:45,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:45,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1619720723, now seen corresponding path program 24 times [2022-11-18 19:41:45,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:45,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488751855] [2022-11-18 19:41:45,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:45,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:45,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:45,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:45,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488751855] [2022-11-18 19:41:45,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488751855] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:45,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486101630] [2022-11-18 19:41:45,368 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:41:45,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:45,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:45,369 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:45,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-18 19:41:45,494 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-18 19:41:45,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:45,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:41:45,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:45,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:45,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:45,593 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:45,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486101630] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:45,594 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:45,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-18 19:41:45,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081417041] [2022-11-18 19:41:45,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:45,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:41:45,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:45,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:41:45,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:41:45,596 INFO L87 Difference]: Start difference. First operand 160 states and 471 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:45,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:45,765 INFO L93 Difference]: Finished difference Result 184 states and 527 transitions. [2022-11-18 19:41:45,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:41:45,765 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 19:41:45,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:45,766 INFO L225 Difference]: With dead ends: 184 [2022-11-18 19:41:45,766 INFO L226 Difference]: Without dead ends: 178 [2022-11-18 19:41:45,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:41:45,767 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 36 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:45,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 20 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:41:45,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-18 19:41:45,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 160. [2022-11-18 19:41:45,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 2.949685534591195) internal successors, (469), 159 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:45,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 469 transitions. [2022-11-18 19:41:45,771 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 469 transitions. Word has length 16 [2022-11-18 19:41:45,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:45,772 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 469 transitions. [2022-11-18 19:41:45,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:45,772 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 469 transitions. [2022-11-18 19:41:45,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:41:45,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:45,773 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:45,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-11-18 19:41:45,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-18 19:41:45,978 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:45,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:45,979 INFO L85 PathProgramCache]: Analyzing trace with hash -855988617, now seen corresponding path program 25 times [2022-11-18 19:41:45,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:45,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273954246] [2022-11-18 19:41:45,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:45,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:46,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:46,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:46,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273954246] [2022-11-18 19:41:46,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273954246] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:46,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845451777] [2022-11-18 19:41:46,065 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:41:46,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:46,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:46,066 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:46,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-18 19:41:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:46,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:41:46,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:46,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:46,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:46,284 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:46,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845451777] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:46,284 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:46,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2022-11-18 19:41:46,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014211951] [2022-11-18 19:41:46,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:46,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:41:46,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:46,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:41:46,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:41:46,286 INFO L87 Difference]: Start difference. First operand 160 states and 469 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:46,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:46,605 INFO L93 Difference]: Finished difference Result 288 states and 762 transitions. [2022-11-18 19:41:46,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:41:46,606 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 19:41:46,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:46,608 INFO L225 Difference]: With dead ends: 288 [2022-11-18 19:41:46,608 INFO L226 Difference]: Without dead ends: 288 [2022-11-18 19:41:46,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:41:46,609 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 83 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:46,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 6 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:41:46,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-11-18 19:41:46,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 186. [2022-11-18 19:41:46,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 3.0486486486486486) internal successors, (564), 185 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:46,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 564 transitions. [2022-11-18 19:41:46,624 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 564 transitions. Word has length 16 [2022-11-18 19:41:46,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:46,624 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 564 transitions. [2022-11-18 19:41:46,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:46,624 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 564 transitions. [2022-11-18 19:41:46,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:41:46,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:46,625 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:46,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:46,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-11-18 19:41:46,826 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:46,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:46,826 INFO L85 PathProgramCache]: Analyzing trace with hash 2060177839, now seen corresponding path program 26 times [2022-11-18 19:41:46,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:46,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621389305] [2022-11-18 19:41:46,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:46,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:46,906 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:46,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:46,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621389305] [2022-11-18 19:41:46,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621389305] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:46,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104102914] [2022-11-18 19:41:46,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:41:46,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:46,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:46,909 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:46,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-18 19:41:47,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:41:47,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:47,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:41:47,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:47,104 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:47,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:47,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:41:47,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104102914] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:47,147 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:47,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2022-11-18 19:41:47,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7307312] [2022-11-18 19:41:47,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:47,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:41:47,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:47,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:41:47,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:41:47,148 INFO L87 Difference]: Start difference. First operand 186 states and 564 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:47,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:47,546 INFO L93 Difference]: Finished difference Result 270 states and 712 transitions. [2022-11-18 19:41:47,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 19:41:47,546 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 19:41:47,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:47,549 INFO L225 Difference]: With dead ends: 270 [2022-11-18 19:41:47,549 INFO L226 Difference]: Without dead ends: 266 [2022-11-18 19:41:47,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2022-11-18 19:41:47,550 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 85 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:47,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 10 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:41:47,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-18 19:41:47,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 174. [2022-11-18 19:41:47,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 2.959537572254335) internal successors, (512), 173 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:47,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 512 transitions. [2022-11-18 19:41:47,558 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 512 transitions. Word has length 16 [2022-11-18 19:41:47,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:47,558 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 512 transitions. [2022-11-18 19:41:47,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:47,559 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 512 transitions. [2022-11-18 19:41:47,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:41:47,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:47,560 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:47,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:47,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:47,766 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:47,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:47,766 INFO L85 PathProgramCache]: Analyzing trace with hash -2027942537, now seen corresponding path program 27 times [2022-11-18 19:41:47,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:47,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677859745] [2022-11-18 19:41:47,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:47,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:47,855 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:47,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:47,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677859745] [2022-11-18 19:41:47,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677859745] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:47,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539175505] [2022-11-18 19:41:47,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:41:47,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:47,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:47,857 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:47,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-18 19:41:47,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 19:41:47,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:47,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:41:47,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:48,035 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:48,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:48,076 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:48,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539175505] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:48,077 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:48,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-18 19:41:48,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804085194] [2022-11-18 19:41:48,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:48,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:41:48,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:48,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:41:48,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:41:48,078 INFO L87 Difference]: Start difference. First operand 174 states and 512 transitions. Second operand has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:48,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:48,476 INFO L93 Difference]: Finished difference Result 254 states and 684 transitions. [2022-11-18 19:41:48,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 19:41:48,477 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 19:41:48,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:48,479 INFO L225 Difference]: With dead ends: 254 [2022-11-18 19:41:48,479 INFO L226 Difference]: Without dead ends: 246 [2022-11-18 19:41:48,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2022-11-18 19:41:48,480 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 80 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:48,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 19 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:41:48,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-11-18 19:41:48,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 196. [2022-11-18 19:41:48,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 3.0) internal successors, (585), 195 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:48,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 585 transitions. [2022-11-18 19:41:48,489 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 585 transitions. Word has length 16 [2022-11-18 19:41:48,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:48,489 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 585 transitions. [2022-11-18 19:41:48,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:48,489 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 585 transitions. [2022-11-18 19:41:48,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 19:41:48,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:48,490 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:48,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:48,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:48,696 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:48,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:48,697 INFO L85 PathProgramCache]: Analyzing trace with hash -78545106, now seen corresponding path program 28 times [2022-11-18 19:41:48,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:48,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188785574] [2022-11-18 19:41:48,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:48,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:49,339 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:49,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:49,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188785574] [2022-11-18 19:41:49,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188785574] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:49,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051785948] [2022-11-18 19:41:49,340 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:41:49,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:49,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:49,341 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:49,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-18 19:41:49,463 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:41:49,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:49,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-18 19:41:49,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:49,684 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:49,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:49,905 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:49,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051785948] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:49,906 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:49,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-11-18 19:41:49,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047215381] [2022-11-18 19:41:49,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:49,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:41:49,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:49,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:41:49,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:41:49,908 INFO L87 Difference]: Start difference. First operand 196 states and 585 transitions. Second operand has 15 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:50,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:50,387 INFO L93 Difference]: Finished difference Result 302 states and 795 transitions. [2022-11-18 19:41:50,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:41:50,387 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 19:41:50,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:50,390 INFO L225 Difference]: With dead ends: 302 [2022-11-18 19:41:50,390 INFO L226 Difference]: Without dead ends: 284 [2022-11-18 19:41:50,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:41:50,391 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 76 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:50,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 39 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:41:50,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-18 19:41:50,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 230. [2022-11-18 19:41:50,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 2.965065502183406) internal successors, (679), 229 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:50,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 679 transitions. [2022-11-18 19:41:50,401 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 679 transitions. Word has length 17 [2022-11-18 19:41:50,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:50,401 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 679 transitions. [2022-11-18 19:41:50,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:50,401 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 679 transitions. [2022-11-18 19:41:50,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 19:41:50,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:50,402 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:50,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:50,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-11-18 19:41:50,608 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:50,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:50,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1669390804, now seen corresponding path program 29 times [2022-11-18 19:41:50,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:50,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581921340] [2022-11-18 19:41:50,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:50,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:51,208 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:51,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:51,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581921340] [2022-11-18 19:41:51,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581921340] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:51,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891885923] [2022-11-18 19:41:51,209 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:41:51,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:51,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:51,210 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:51,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-18 19:41:51,345 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-18 19:41:51,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:51,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-18 19:41:51,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:51,547 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:51,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:51,812 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:51,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891885923] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:51,813 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:51,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-11-18 19:41:51,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421990980] [2022-11-18 19:41:51,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:51,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 19:41:51,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:51,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 19:41:51,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:41:51,815 INFO L87 Difference]: Start difference. First operand 230 states and 679 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:52,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:52,340 INFO L93 Difference]: Finished difference Result 339 states and 886 transitions. [2022-11-18 19:41:52,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:41:52,341 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 19:41:52,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:52,343 INFO L225 Difference]: With dead ends: 339 [2022-11-18 19:41:52,343 INFO L226 Difference]: Without dead ends: 334 [2022-11-18 19:41:52,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:41:52,344 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 84 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:52,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 49 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:41:52,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-11-18 19:41:52,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 246. [2022-11-18 19:41:52,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 3.0326530612244897) internal successors, (743), 245 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:52,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 743 transitions. [2022-11-18 19:41:52,353 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 743 transitions. Word has length 17 [2022-11-18 19:41:52,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:52,354 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 743 transitions. [2022-11-18 19:41:52,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:52,354 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 743 transitions. [2022-11-18 19:41:52,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 19:41:52,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:52,355 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:52,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:52,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-11-18 19:41:52,561 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:52,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:52,562 INFO L85 PathProgramCache]: Analyzing trace with hash -810516274, now seen corresponding path program 30 times [2022-11-18 19:41:52,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:52,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848890175] [2022-11-18 19:41:52,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:52,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:53,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:53,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:53,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848890175] [2022-11-18 19:41:53,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848890175] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:53,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212856145] [2022-11-18 19:41:53,239 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:41:53,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:53,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:53,241 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:53,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-18 19:41:53,376 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-18 19:41:53,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:53,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-18 19:41:53,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:53,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:53,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:53,868 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:53,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212856145] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:53,869 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:53,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-11-18 19:41:53,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743274348] [2022-11-18 19:41:53,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:53,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 19:41:53,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:53,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 19:41:53,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:41:53,871 INFO L87 Difference]: Start difference. First operand 246 states and 743 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:54,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:54,380 INFO L93 Difference]: Finished difference Result 328 states and 869 transitions. [2022-11-18 19:41:54,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:41:54,381 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 19:41:54,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:54,382 INFO L225 Difference]: With dead ends: 328 [2022-11-18 19:41:54,382 INFO L226 Difference]: Without dead ends: 316 [2022-11-18 19:41:54,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2022-11-18 19:41:54,383 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 103 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:54,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 39 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:41:54,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-11-18 19:41:54,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 244. [2022-11-18 19:41:54,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 3.02880658436214) internal successors, (736), 243 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:54,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 736 transitions. [2022-11-18 19:41:54,394 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 736 transitions. Word has length 17 [2022-11-18 19:41:54,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:54,395 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 736 transitions. [2022-11-18 19:41:54,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:54,395 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 736 transitions. [2022-11-18 19:41:54,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 19:41:54,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:54,396 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:54,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:54,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:54,603 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:54,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:54,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1246775652, now seen corresponding path program 31 times [2022-11-18 19:41:54,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:54,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100412824] [2022-11-18 19:41:54,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:54,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:55,201 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:55,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:55,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100412824] [2022-11-18 19:41:55,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100412824] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:55,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145240204] [2022-11-18 19:41:55,202 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:41:55,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:55,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:55,203 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:55,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-18 19:41:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:55,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-18 19:41:55,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:55,559 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:55,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:55,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:55,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145240204] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:55,818 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:55,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-18 19:41:55,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364991215] [2022-11-18 19:41:55,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:55,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 19:41:55,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:55,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 19:41:55,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:41:55,820 INFO L87 Difference]: Start difference. First operand 244 states and 736 transitions. Second operand has 17 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:56,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:56,358 INFO L93 Difference]: Finished difference Result 313 states and 841 transitions. [2022-11-18 19:41:56,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:41:56,358 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 19:41:56,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:56,361 INFO L225 Difference]: With dead ends: 313 [2022-11-18 19:41:56,361 INFO L226 Difference]: Without dead ends: 308 [2022-11-18 19:41:56,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:41:56,362 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 88 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:56,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 38 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:41:56,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-11-18 19:41:56,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 244. [2022-11-18 19:41:56,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 3.02880658436214) internal successors, (736), 243 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:56,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 736 transitions. [2022-11-18 19:41:56,374 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 736 transitions. Word has length 17 [2022-11-18 19:41:56,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:56,374 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 736 transitions. [2022-11-18 19:41:56,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:56,375 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 736 transitions. [2022-11-18 19:41:56,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 19:41:56,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:56,376 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:56,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:56,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-11-18 19:41:56,582 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:56,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:56,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1304972666, now seen corresponding path program 32 times [2022-11-18 19:41:56,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:56,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294738471] [2022-11-18 19:41:56,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:56,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:57,234 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:57,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:57,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294738471] [2022-11-18 19:41:57,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294738471] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:57,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680290074] [2022-11-18 19:41:57,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:41:57,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:57,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:57,236 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:57,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-11-18 19:41:57,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:41:57,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:57,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-18 19:41:57,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:57,571 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:57,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:57,839 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:57,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680290074] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:57,840 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:57,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 14 [2022-11-18 19:41:57,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447118719] [2022-11-18 19:41:57,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:57,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:41:57,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:57,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:41:57,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:41:57,841 INFO L87 Difference]: Start difference. First operand 244 states and 736 transitions. Second operand has 16 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:58,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:58,222 INFO L93 Difference]: Finished difference Result 315 states and 881 transitions. [2022-11-18 19:41:58,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:41:58,226 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 19:41:58,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:58,228 INFO L225 Difference]: With dead ends: 315 [2022-11-18 19:41:58,228 INFO L226 Difference]: Without dead ends: 310 [2022-11-18 19:41:58,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:41:58,229 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 83 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:58,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 33 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:41:58,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-11-18 19:41:58,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 260. [2022-11-18 19:41:58,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 3.0617760617760617) internal successors, (793), 259 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:58,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 793 transitions. [2022-11-18 19:41:58,242 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 793 transitions. Word has length 17 [2022-11-18 19:41:58,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:58,243 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 793 transitions. [2022-11-18 19:41:58,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:58,243 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 793 transitions. [2022-11-18 19:41:58,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 19:41:58,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:58,244 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:58,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:58,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:58,450 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:41:58,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:58,451 INFO L85 PathProgramCache]: Analyzing trace with hash -2131120100, now seen corresponding path program 33 times [2022-11-18 19:41:58,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:58,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732382839] [2022-11-18 19:41:58,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:58,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:59,113 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:59,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:59,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732382839] [2022-11-18 19:41:59,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732382839] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:59,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308683120] [2022-11-18 19:41:59,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:41:59,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:59,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:59,116 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:59,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-18 19:41:59,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 19:41:59,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:59,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-18 19:41:59,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:59,433 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:59,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:59,670 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:59,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308683120] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:59,670 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:59,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 15 [2022-11-18 19:41:59,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533023393] [2022-11-18 19:41:59,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:59,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 19:41:59,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:59,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 19:41:59,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:41:59,672 INFO L87 Difference]: Start difference. First operand 260 states and 793 transitions. Second operand has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:00,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:00,085 INFO L93 Difference]: Finished difference Result 317 states and 878 transitions. [2022-11-18 19:42:00,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:42:00,086 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 19:42:00,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:00,087 INFO L225 Difference]: With dead ends: 317 [2022-11-18 19:42:00,088 INFO L226 Difference]: Without dead ends: 310 [2022-11-18 19:42:00,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:42:00,089 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 61 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:00,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 40 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:00,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-11-18 19:42:00,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 258. [2022-11-18 19:42:00,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 3.0428015564202333) internal successors, (782), 257 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:00,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 782 transitions. [2022-11-18 19:42:00,098 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 782 transitions. Word has length 17 [2022-11-18 19:42:00,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:00,099 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 782 transitions. [2022-11-18 19:42:00,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:00,099 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 782 transitions. [2022-11-18 19:42:00,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 19:42:00,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:00,100 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:00,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:00,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-11-18 19:42:00,306 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:00,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:00,307 INFO L85 PathProgramCache]: Analyzing trace with hash -944000978, now seen corresponding path program 34 times [2022-11-18 19:42:00,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:00,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641074468] [2022-11-18 19:42:00,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:00,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:00,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:00,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:00,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641074468] [2022-11-18 19:42:00,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641074468] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:00,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573301319] [2022-11-18 19:42:00,883 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:42:00,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:00,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:00,884 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:00,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-11-18 19:42:01,039 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:42:01,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:01,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-18 19:42:01,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:01,218 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:01,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:01,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:01,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573301319] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:01,450 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:01,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 14 [2022-11-18 19:42:01,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799514541] [2022-11-18 19:42:01,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:01,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:42:01,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:01,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:42:01,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:42:01,451 INFO L87 Difference]: Start difference. First operand 258 states and 782 transitions. Second operand has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:01,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:01,776 INFO L93 Difference]: Finished difference Result 301 states and 847 transitions. [2022-11-18 19:42:01,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:42:01,777 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 19:42:01,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:01,779 INFO L225 Difference]: With dead ends: 301 [2022-11-18 19:42:01,779 INFO L226 Difference]: Without dead ends: 296 [2022-11-18 19:42:01,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:42:01,780 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 58 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:01,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 30 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:01,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-11-18 19:42:01,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 258. [2022-11-18 19:42:01,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 3.0428015564202333) internal successors, (782), 257 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:01,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 782 transitions. [2022-11-18 19:42:01,788 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 782 transitions. Word has length 17 [2022-11-18 19:42:01,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:01,789 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 782 transitions. [2022-11-18 19:42:01,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:01,789 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 782 transitions. [2022-11-18 19:42:01,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 19:42:01,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:01,790 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:01,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:01,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-11-18 19:42:01,996 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:01,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:01,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1395359892, now seen corresponding path program 35 times [2022-11-18 19:42:01,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:01,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890721041] [2022-11-18 19:42:01,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:01,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:02,509 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:02,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:02,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890721041] [2022-11-18 19:42:02,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890721041] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:02,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733709588] [2022-11-18 19:42:02,510 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:42:02,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:02,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:02,514 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:02,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-11-18 19:42:02,662 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-18 19:42:02,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:02,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-18 19:42:02,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:02,845 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:02,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:03,088 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:03,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733709588] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:03,089 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:03,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 16 [2022-11-18 19:42:03,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201108382] [2022-11-18 19:42:03,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:03,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:42:03,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:03,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:42:03,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:42:03,090 INFO L87 Difference]: Start difference. First operand 258 states and 782 transitions. Second operand has 18 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:03,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:03,448 INFO L93 Difference]: Finished difference Result 364 states and 998 transitions. [2022-11-18 19:42:03,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:42:03,449 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 19:42:03,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:03,451 INFO L225 Difference]: With dead ends: 364 [2022-11-18 19:42:03,451 INFO L226 Difference]: Without dead ends: 346 [2022-11-18 19:42:03,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:42:03,452 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 129 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:03,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 26 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:03,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-11-18 19:42:03,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 276. [2022-11-18 19:42:03,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 3.0945454545454547) internal successors, (851), 275 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:03,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 851 transitions. [2022-11-18 19:42:03,467 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 851 transitions. Word has length 17 [2022-11-18 19:42:03,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:03,467 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 851 transitions. [2022-11-18 19:42:03,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:03,468 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 851 transitions. [2022-11-18 19:42:03,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 19:42:03,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:03,469 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:03,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:03,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:03,675 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:03,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:03,675 INFO L85 PathProgramCache]: Analyzing trace with hash -536485362, now seen corresponding path program 36 times [2022-11-18 19:42:03,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:03,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570786216] [2022-11-18 19:42:03,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:03,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:04,140 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:04,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:04,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570786216] [2022-11-18 19:42:04,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570786216] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:04,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327359213] [2022-11-18 19:42:04,141 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:42:04,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:04,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:04,142 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:04,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-11-18 19:42:04,289 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-18 19:42:04,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:04,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-18 19:42:04,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:04,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:04,685 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:04,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327359213] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:04,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:04,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 16 [2022-11-18 19:42:04,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164046098] [2022-11-18 19:42:04,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:04,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:42:04,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:04,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:42:04,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:42:04,687 INFO L87 Difference]: Start difference. First operand 276 states and 851 transitions. Second operand has 18 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:05,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:05,047 INFO L93 Difference]: Finished difference Result 352 states and 968 transitions. [2022-11-18 19:42:05,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:42:05,047 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 19:42:05,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:05,050 INFO L225 Difference]: With dead ends: 352 [2022-11-18 19:42:05,050 INFO L226 Difference]: Without dead ends: 340 [2022-11-18 19:42:05,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:42:05,051 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 99 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:05,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 32 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:05,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-11-18 19:42:05,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 272. [2022-11-18 19:42:05,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 3.07380073800738) internal successors, (833), 271 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:05,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 833 transitions. [2022-11-18 19:42:05,061 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 833 transitions. Word has length 17 [2022-11-18 19:42:05,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:05,061 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 833 transitions. [2022-11-18 19:42:05,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:05,062 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 833 transitions. [2022-11-18 19:42:05,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 19:42:05,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:05,063 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:05,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:05,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:05,269 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:05,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:05,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1520806564, now seen corresponding path program 37 times [2022-11-18 19:42:05,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:05,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772011777] [2022-11-18 19:42:05,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:05,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:05,857 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:05,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:05,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772011777] [2022-11-18 19:42:05,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772011777] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:05,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25571866] [2022-11-18 19:42:05,858 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:42:05,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:05,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:05,859 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:05,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-11-18 19:42:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:05,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-18 19:42:05,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:06,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:06,418 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:06,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25571866] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:06,419 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:06,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 15 [2022-11-18 19:42:06,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022331967] [2022-11-18 19:42:06,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:06,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 19:42:06,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:06,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 19:42:06,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:42:06,420 INFO L87 Difference]: Start difference. First operand 272 states and 833 transitions. Second operand has 17 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:06,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:06,891 INFO L93 Difference]: Finished difference Result 327 states and 919 transitions. [2022-11-18 19:42:06,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:42:06,891 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 19:42:06,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:06,894 INFO L225 Difference]: With dead ends: 327 [2022-11-18 19:42:06,894 INFO L226 Difference]: Without dead ends: 322 [2022-11-18 19:42:06,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2022-11-18 19:42:06,895 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 88 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:06,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 29 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:06,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-11-18 19:42:06,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 270. [2022-11-18 19:42:06,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 3.070631970260223) internal successors, (826), 269 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:06,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 826 transitions. [2022-11-18 19:42:06,905 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 826 transitions. Word has length 17 [2022-11-18 19:42:06,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:06,906 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 826 transitions. [2022-11-18 19:42:06,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:06,906 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 826 transitions. [2022-11-18 19:42:06,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 19:42:06,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:06,907 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:06,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:07,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:07,113 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:07,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:07,114 INFO L85 PathProgramCache]: Analyzing trace with hash 2140038756, now seen corresponding path program 38 times [2022-11-18 19:42:07,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:07,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828877944] [2022-11-18 19:42:07,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:07,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:07,596 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:07,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:07,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828877944] [2022-11-18 19:42:07,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828877944] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:07,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990075083] [2022-11-18 19:42:07,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:42:07,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:07,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:07,599 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:07,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-11-18 19:42:07,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:42:07,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:07,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-18 19:42:07,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:07,910 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:42:07,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:08,147 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:08,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990075083] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:08,148 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:08,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 14 [2022-11-18 19:42:08,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670214452] [2022-11-18 19:42:08,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:08,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:42:08,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:08,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:42:08,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:42:08,151 INFO L87 Difference]: Start difference. First operand 270 states and 826 transitions. Second operand has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:08,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:08,409 INFO L93 Difference]: Finished difference Result 303 states and 879 transitions. [2022-11-18 19:42:08,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:42:08,410 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 19:42:08,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:08,411 INFO L225 Difference]: With dead ends: 303 [2022-11-18 19:42:08,411 INFO L226 Difference]: Without dead ends: 294 [2022-11-18 19:42:08,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:42:08,412 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 47 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:08,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 24 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:42:08,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-11-18 19:42:08,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 270. [2022-11-18 19:42:08,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 3.063197026022305) internal successors, (824), 269 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:08,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 824 transitions. [2022-11-18 19:42:08,421 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 824 transitions. Word has length 17 [2022-11-18 19:42:08,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:08,421 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 824 transitions. [2022-11-18 19:42:08,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:08,421 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 824 transitions. [2022-11-18 19:42:08,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 19:42:08,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:08,423 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:08,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:08,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2022-11-18 19:42:08,629 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:08,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:08,629 INFO L85 PathProgramCache]: Analyzing trace with hash -979040276, now seen corresponding path program 39 times [2022-11-18 19:42:08,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:08,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743860810] [2022-11-18 19:42:08,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:08,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:09,086 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:09,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:09,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743860810] [2022-11-18 19:42:09,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743860810] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:09,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963959717] [2022-11-18 19:42:09,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:42:09,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:09,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:09,090 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:09,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-11-18 19:42:09,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 19:42:09,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:09,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-18 19:42:09,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:09,387 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:09,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:09,600 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:09,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963959717] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:09,600 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:09,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-11-18 19:42:09,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939449550] [2022-11-18 19:42:09,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:09,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 19:42:09,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:09,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 19:42:09,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:42:09,601 INFO L87 Difference]: Start difference. First operand 270 states and 824 transitions. Second operand has 19 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:09,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:09,925 INFO L93 Difference]: Finished difference Result 371 states and 1043 transitions. [2022-11-18 19:42:09,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:42:09,925 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 19:42:09,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:09,927 INFO L225 Difference]: With dead ends: 371 [2022-11-18 19:42:09,927 INFO L226 Difference]: Without dead ends: 366 [2022-11-18 19:42:09,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:42:09,927 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 67 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:09,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 40 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:09,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-11-18 19:42:09,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 296. [2022-11-18 19:42:09,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 3.128813559322034) internal successors, (923), 295 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:09,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 923 transitions. [2022-11-18 19:42:09,938 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 923 transitions. Word has length 17 [2022-11-18 19:42:09,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:09,938 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 923 transitions. [2022-11-18 19:42:09,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:09,939 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 923 transitions. [2022-11-18 19:42:09,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 19:42:09,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:09,940 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:09,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:10,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:10,146 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:10,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:10,147 INFO L85 PathProgramCache]: Analyzing trace with hash -120165746, now seen corresponding path program 40 times [2022-11-18 19:42:10,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:10,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976984469] [2022-11-18 19:42:10,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:10,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:10,641 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:10,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:10,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976984469] [2022-11-18 19:42:10,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976984469] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:10,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530004418] [2022-11-18 19:42:10,642 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:42:10,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:10,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:10,646 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:10,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-11-18 19:42:10,794 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:42:10,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:10,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-18 19:42:10,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:10,959 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:10,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:11,192 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:11,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530004418] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:11,193 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:11,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-11-18 19:42:11,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524526172] [2022-11-18 19:42:11,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:11,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 19:42:11,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:11,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 19:42:11,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:42:11,194 INFO L87 Difference]: Start difference. First operand 296 states and 923 transitions. Second operand has 19 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:11,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:11,515 INFO L93 Difference]: Finished difference Result 373 states and 1044 transitions. [2022-11-18 19:42:11,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:42:11,515 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 19:42:11,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:11,517 INFO L225 Difference]: With dead ends: 373 [2022-11-18 19:42:11,518 INFO L226 Difference]: Without dead ends: 368 [2022-11-18 19:42:11,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:42:11,518 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 87 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:11,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 40 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:11,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-11-18 19:42:11,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 292. [2022-11-18 19:42:11,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 3.1099656357388317) internal successors, (905), 291 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:11,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 905 transitions. [2022-11-18 19:42:11,528 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 905 transitions. Word has length 17 [2022-11-18 19:42:11,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:11,529 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 905 transitions. [2022-11-18 19:42:11,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:11,529 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 905 transitions. [2022-11-18 19:42:11,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 19:42:11,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:11,530 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:11,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:11,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:11,736 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:11,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:11,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1066953376, now seen corresponding path program 41 times [2022-11-18 19:42:11,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:11,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739231774] [2022-11-18 19:42:11,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:11,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:12,274 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:12,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:12,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739231774] [2022-11-18 19:42:12,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739231774] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:12,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059956511] [2022-11-18 19:42:12,275 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:42:12,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:12,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:12,276 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:12,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-11-18 19:42:12,414 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:42:12,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:12,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-18 19:42:12,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:12,596 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:12,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:12,809 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:12,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059956511] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:12,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:12,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-11-18 19:42:12,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316447641] [2022-11-18 19:42:12,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:12,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:42:12,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:12,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:42:12,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:42:12,811 INFO L87 Difference]: Start difference. First operand 292 states and 905 transitions. Second operand has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:13,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:13,225 INFO L93 Difference]: Finished difference Result 367 states and 1022 transitions. [2022-11-18 19:42:13,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:42:13,226 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 19:42:13,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:13,228 INFO L225 Difference]: With dead ends: 367 [2022-11-18 19:42:13,228 INFO L226 Difference]: Without dead ends: 362 [2022-11-18 19:42:13,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:42:13,229 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 72 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:13,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 44 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:13,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-11-18 19:42:13,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 292. [2022-11-18 19:42:13,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 3.1030927835051547) internal successors, (903), 291 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:13,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 903 transitions. [2022-11-18 19:42:13,248 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 903 transitions. Word has length 17 [2022-11-18 19:42:13,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:13,248 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 903 transitions. [2022-11-18 19:42:13,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:13,249 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 903 transitions. [2022-11-18 19:42:13,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 19:42:13,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:13,250 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:13,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:13,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2022-11-18 19:42:13,459 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:13,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:13,460 INFO L85 PathProgramCache]: Analyzing trace with hash -787059506, now seen corresponding path program 42 times [2022-11-18 19:42:13,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:13,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085728596] [2022-11-18 19:42:13,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:13,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:13,876 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:13,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:13,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085728596] [2022-11-18 19:42:13,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085728596] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:13,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770233269] [2022-11-18 19:42:13,877 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:42:13,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:13,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:13,879 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:13,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-11-18 19:42:14,035 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-18 19:42:14,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:14,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-18 19:42:14,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:14,193 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:14,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:14,420 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:14,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770233269] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:14,421 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:14,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2022-11-18 19:42:14,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137933775] [2022-11-18 19:42:14,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:14,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:42:14,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:14,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:42:14,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:42:14,424 INFO L87 Difference]: Start difference. First operand 292 states and 903 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:14,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:14,842 INFO L93 Difference]: Finished difference Result 349 states and 989 transitions. [2022-11-18 19:42:14,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:42:14,842 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 19:42:14,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:14,844 INFO L225 Difference]: With dead ends: 349 [2022-11-18 19:42:14,844 INFO L226 Difference]: Without dead ends: 344 [2022-11-18 19:42:14,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:42:14,845 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 56 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:14,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 43 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:14,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-11-18 19:42:14,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 298. [2022-11-18 19:42:14,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 3.0707070707070705) internal successors, (912), 297 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:14,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 912 transitions. [2022-11-18 19:42:14,855 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 912 transitions. Word has length 17 [2022-11-18 19:42:14,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:14,856 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 912 transitions. [2022-11-18 19:42:14,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:14,856 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 912 transitions. [2022-11-18 19:42:14,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:14,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:14,857 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:14,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:15,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-11-18 19:42:15,063 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:15,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:15,064 INFO L85 PathProgramCache]: Analyzing trace with hash 351484879, now seen corresponding path program 43 times [2022-11-18 19:42:15,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:15,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785301423] [2022-11-18 19:42:15,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:15,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:15,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:15,172 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:15,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:15,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785301423] [2022-11-18 19:42:15,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785301423] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:15,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913518091] [2022-11-18 19:42:15,173 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:42:15,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:15,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:15,174 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:15,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-11-18 19:42:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:15,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:15,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:15,391 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:15,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:15,438 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:15,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913518091] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:15,438 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:15,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-11-18 19:42:15,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828153484] [2022-11-18 19:42:15,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:15,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:42:15,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:15,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:42:15,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:42:15,439 INFO L87 Difference]: Start difference. First operand 298 states and 912 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:15,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:15,637 INFO L93 Difference]: Finished difference Result 470 states and 1409 transitions. [2022-11-18 19:42:15,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:42:15,638 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:15,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:15,642 INFO L225 Difference]: With dead ends: 470 [2022-11-18 19:42:15,642 INFO L226 Difference]: Without dead ends: 470 [2022-11-18 19:42:15,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:42:15,642 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 85 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:15,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 19 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:42:15,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-11-18 19:42:15,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 302. [2022-11-18 19:42:15,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 3.116279069767442) internal successors, (938), 301 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:15,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 938 transitions. [2022-11-18 19:42:15,653 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 938 transitions. Word has length 18 [2022-11-18 19:42:15,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:15,653 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 938 transitions. [2022-11-18 19:42:15,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:15,653 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 938 transitions. [2022-11-18 19:42:15,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:15,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:15,655 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:15,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:15,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-11-18 19:42:15,860 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:15,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:15,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1618431567, now seen corresponding path program 44 times [2022-11-18 19:42:15,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:15,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176860172] [2022-11-18 19:42:15,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:15,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:15,953 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:15,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:15,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176860172] [2022-11-18 19:42:15,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176860172] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:15,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120351842] [2022-11-18 19:42:15,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:42:15,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:15,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:15,956 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:15,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-11-18 19:42:16,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:42:16,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:16,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:16,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:16,155 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:16,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:16,203 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:16,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120351842] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:16,204 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:16,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-11-18 19:42:16,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322745441] [2022-11-18 19:42:16,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:16,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:42:16,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:16,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:42:16,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:42:16,205 INFO L87 Difference]: Start difference. First operand 302 states and 938 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:16,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:16,464 INFO L93 Difference]: Finished difference Result 450 states and 1342 transitions. [2022-11-18 19:42:16,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:42:16,465 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:16,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:16,469 INFO L225 Difference]: With dead ends: 450 [2022-11-18 19:42:16,470 INFO L226 Difference]: Without dead ends: 432 [2022-11-18 19:42:16,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:42:16,470 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 80 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:16,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 18 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:42:16,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-11-18 19:42:16,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 302. [2022-11-18 19:42:16,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 3.1029900332225915) internal successors, (934), 301 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:16,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 934 transitions. [2022-11-18 19:42:16,483 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 934 transitions. Word has length 18 [2022-11-18 19:42:16,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:16,484 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 934 transitions. [2022-11-18 19:42:16,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:16,484 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 934 transitions. [2022-11-18 19:42:16,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:16,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:16,486 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:16,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:16,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-11-18 19:42:16,693 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:16,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:16,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1318683035, now seen corresponding path program 45 times [2022-11-18 19:42:16,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:16,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453127900] [2022-11-18 19:42:16,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:16,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:16,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:16,821 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:16,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:16,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453127900] [2022-11-18 19:42:16,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453127900] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:16,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417065860] [2022-11-18 19:42:16,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:42:16,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:16,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:16,824 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:16,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-11-18 19:42:16,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 19:42:16,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:16,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:16,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:17,061 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:17,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:17,132 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:17,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417065860] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:17,132 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:17,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-11-18 19:42:17,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163800103] [2022-11-18 19:42:17,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:17,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:42:17,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:17,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:42:17,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:42:17,133 INFO L87 Difference]: Start difference. First operand 302 states and 934 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:17,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:17,525 INFO L93 Difference]: Finished difference Result 416 states and 1215 transitions. [2022-11-18 19:42:17,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:42:17,525 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:17,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:17,527 INFO L225 Difference]: With dead ends: 416 [2022-11-18 19:42:17,527 INFO L226 Difference]: Without dead ends: 416 [2022-11-18 19:42:17,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2022-11-18 19:42:17,529 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 98 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:17,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 14 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:17,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2022-11-18 19:42:17,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 306. [2022-11-18 19:42:17,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 3.1081967213114754) internal successors, (948), 305 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:17,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 948 transitions. [2022-11-18 19:42:17,539 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 948 transitions. Word has length 18 [2022-11-18 19:42:17,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:17,539 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 948 transitions. [2022-11-18 19:42:17,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:17,540 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 948 transitions. [2022-11-18 19:42:17,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:17,541 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:17,541 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:17,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:17,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:17,749 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:17,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:17,749 INFO L85 PathProgramCache]: Analyzing trace with hash 245597655, now seen corresponding path program 46 times [2022-11-18 19:42:17,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:17,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999983961] [2022-11-18 19:42:17,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:17,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:17,837 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:17,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:17,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999983961] [2022-11-18 19:42:17,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999983961] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:17,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777662428] [2022-11-18 19:42:17,838 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:42:17,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:17,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:17,839 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:17,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-11-18 19:42:17,981 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:42:17,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:17,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:17,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:18,050 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:18,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:18,107 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:18,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777662428] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:18,107 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:18,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2022-11-18 19:42:18,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545299261] [2022-11-18 19:42:18,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:18,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:42:18,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:18,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:42:18,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:42:18,109 INFO L87 Difference]: Start difference. First operand 306 states and 948 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:18,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:18,492 INFO L93 Difference]: Finished difference Result 440 states and 1257 transitions. [2022-11-18 19:42:18,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:42:18,492 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:18,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:18,496 INFO L225 Difference]: With dead ends: 440 [2022-11-18 19:42:18,496 INFO L226 Difference]: Without dead ends: 440 [2022-11-18 19:42:18,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=382, Unknown=0, NotChecked=0, Total=552 [2022-11-18 19:42:18,497 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 91 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:18,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 14 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:18,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-11-18 19:42:18,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 304. [2022-11-18 19:42:18,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 3.1056105610561056) internal successors, (941), 303 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:18,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 941 transitions. [2022-11-18 19:42:18,508 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 941 transitions. Word has length 18 [2022-11-18 19:42:18,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:18,508 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 941 transitions. [2022-11-18 19:42:18,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:18,509 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 941 transitions. [2022-11-18 19:42:18,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:18,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:18,510 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:18,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:18,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:18,717 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:18,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:18,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1735002651, now seen corresponding path program 47 times [2022-11-18 19:42:18,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:18,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280795167] [2022-11-18 19:42:18,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:18,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:18,823 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:18,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:18,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280795167] [2022-11-18 19:42:18,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280795167] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:18,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688799794] [2022-11-18 19:42:18,824 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:42:18,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:18,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:18,825 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:18,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-11-18 19:42:18,975 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-18 19:42:18,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:18,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:18,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:19,051 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:19,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:19,105 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:19,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688799794] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:19,105 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:19,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2022-11-18 19:42:19,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051963331] [2022-11-18 19:42:19,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:19,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:42:19,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:19,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:42:19,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:42:19,107 INFO L87 Difference]: Start difference. First operand 304 states and 941 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:19,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:19,668 INFO L93 Difference]: Finished difference Result 544 states and 1471 transitions. [2022-11-18 19:42:19,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 19:42:19,669 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:19,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:19,671 INFO L225 Difference]: With dead ends: 544 [2022-11-18 19:42:19,671 INFO L226 Difference]: Without dead ends: 544 [2022-11-18 19:42:19,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2022-11-18 19:42:19,672 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 118 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:19,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 14 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:42:19,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2022-11-18 19:42:19,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 308. [2022-11-18 19:42:19,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 3.1302931596091206) internal successors, (961), 307 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:19,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 961 transitions. [2022-11-18 19:42:19,688 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 961 transitions. Word has length 18 [2022-11-18 19:42:19,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:19,688 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 961 transitions. [2022-11-18 19:42:19,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:19,689 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 961 transitions. [2022-11-18 19:42:19,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:19,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:19,690 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:19,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:19,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2022-11-18 19:42:19,897 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:19,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:19,897 INFO L85 PathProgramCache]: Analyzing trace with hash 925656025, now seen corresponding path program 48 times [2022-11-18 19:42:19,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:19,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170518980] [2022-11-18 19:42:19,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:19,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:20,021 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:20,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:20,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170518980] [2022-11-18 19:42:20,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170518980] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:20,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539918682] [2022-11-18 19:42:20,022 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:42:20,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:20,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:20,024 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:20,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-11-18 19:42:20,225 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-18 19:42:20,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:20,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:20,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:20,323 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:20,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:20,395 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:20,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539918682] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:20,396 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:20,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2022-11-18 19:42:20,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262714571] [2022-11-18 19:42:20,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:20,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:42:20,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:20,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:42:20,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:42:20,404 INFO L87 Difference]: Start difference. First operand 308 states and 961 transitions. Second operand has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:20,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:20,940 INFO L93 Difference]: Finished difference Result 668 states and 1910 transitions. [2022-11-18 19:42:20,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 19:42:20,941 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:20,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:20,947 INFO L225 Difference]: With dead ends: 668 [2022-11-18 19:42:20,947 INFO L226 Difference]: Without dead ends: 666 [2022-11-18 19:42:20,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=454, Unknown=0, NotChecked=0, Total=650 [2022-11-18 19:42:20,948 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 151 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:20,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 12 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:42:20,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2022-11-18 19:42:20,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 394. [2022-11-18 19:42:20,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.318066157760814) internal successors, (1304), 393 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:20,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1304 transitions. [2022-11-18 19:42:20,965 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1304 transitions. Word has length 18 [2022-11-18 19:42:20,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:20,965 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 1304 transitions. [2022-11-18 19:42:20,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:20,966 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1304 transitions. [2022-11-18 19:42:20,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:20,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:20,967 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:20,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:21,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:21,174 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:21,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:21,175 INFO L85 PathProgramCache]: Analyzing trace with hash -453144815, now seen corresponding path program 49 times [2022-11-18 19:42:21,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:21,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417337927] [2022-11-18 19:42:21,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:21,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:21,286 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:21,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:21,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417337927] [2022-11-18 19:42:21,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417337927] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:21,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567425583] [2022-11-18 19:42:21,286 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:42:21,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:21,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:21,287 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:21,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-11-18 19:42:21,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:21,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:21,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:21,523 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:21,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:21,578 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:21,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567425583] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:21,578 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:21,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2022-11-18 19:42:21,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814073384] [2022-11-18 19:42:21,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:21,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:42:21,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:21,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:42:21,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:42:21,579 INFO L87 Difference]: Start difference. First operand 394 states and 1304 transitions. Second operand has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:22,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:22,176 INFO L93 Difference]: Finished difference Result 676 states and 1908 transitions. [2022-11-18 19:42:22,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 19:42:22,177 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:22,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:22,182 INFO L225 Difference]: With dead ends: 676 [2022-11-18 19:42:22,182 INFO L226 Difference]: Without dead ends: 668 [2022-11-18 19:42:22,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=283, Invalid=839, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:42:22,183 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 122 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:22,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 13 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:42:22,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-11-18 19:42:22,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 364. [2022-11-18 19:42:22,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 3.236914600550964) internal successors, (1175), 363 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:22,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 1175 transitions. [2022-11-18 19:42:22,210 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 1175 transitions. Word has length 18 [2022-11-18 19:42:22,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:22,210 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 1175 transitions. [2022-11-18 19:42:22,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:22,210 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 1175 transitions. [2022-11-18 19:42:22,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:22,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:22,212 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:22,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:22,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:22,418 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:22,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:22,419 INFO L85 PathProgramCache]: Analyzing trace with hash -513970993, now seen corresponding path program 50 times [2022-11-18 19:42:22,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:22,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308541416] [2022-11-18 19:42:22,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:22,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:22,525 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:22,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:22,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308541416] [2022-11-18 19:42:22,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308541416] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:22,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791402201] [2022-11-18 19:42:22,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:42:22,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:22,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:22,527 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:22,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-11-18 19:42:22,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:42:22,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:22,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:22,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:22,739 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:22,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:22,791 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:22,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791402201] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:22,792 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:22,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2022-11-18 19:42:22,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654415759] [2022-11-18 19:42:22,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:22,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:42:22,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:22,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:42:22,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:42:22,793 INFO L87 Difference]: Start difference. First operand 364 states and 1175 transitions. Second operand has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:23,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:23,364 INFO L93 Difference]: Finished difference Result 522 states and 1512 transitions. [2022-11-18 19:42:23,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 19:42:23,364 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:23,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:23,367 INFO L225 Difference]: With dead ends: 522 [2022-11-18 19:42:23,367 INFO L226 Difference]: Without dead ends: 518 [2022-11-18 19:42:23,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 25 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=370, Invalid=820, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 19:42:23,368 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 98 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:23,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 22 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:23,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-11-18 19:42:23,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 354. [2022-11-18 19:42:23,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 353 states have (on average 3.2124645892351276) internal successors, (1134), 353 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:23,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 1134 transitions. [2022-11-18 19:42:23,378 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 1134 transitions. Word has length 18 [2022-11-18 19:42:23,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:23,379 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 1134 transitions. [2022-11-18 19:42:23,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:23,379 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 1134 transitions. [2022-11-18 19:42:23,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:23,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:23,380 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:23,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:23,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-11-18 19:42:23,586 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:23,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:23,587 INFO L85 PathProgramCache]: Analyzing trace with hash -246297895, now seen corresponding path program 51 times [2022-11-18 19:42:23,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:23,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237419856] [2022-11-18 19:42:23,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:23,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:23,678 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:23,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:23,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237419856] [2022-11-18 19:42:23,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237419856] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:23,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859617819] [2022-11-18 19:42:23,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:42:23,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:23,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:23,680 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:23,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-11-18 19:42:23,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 19:42:23,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:23,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:23,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:23,907 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:23,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:23,960 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:23,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859617819] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:23,960 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:23,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2022-11-18 19:42:23,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027261523] [2022-11-18 19:42:23,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:23,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:42:23,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:23,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:42:23,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:42:23,962 INFO L87 Difference]: Start difference. First operand 354 states and 1134 transitions. Second operand has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:24,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:24,502 INFO L93 Difference]: Finished difference Result 650 states and 1828 transitions. [2022-11-18 19:42:24,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 19:42:24,503 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:24,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:24,507 INFO L225 Difference]: With dead ends: 650 [2022-11-18 19:42:24,507 INFO L226 Difference]: Without dead ends: 638 [2022-11-18 19:42:24,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=238, Invalid=754, Unknown=0, NotChecked=0, Total=992 [2022-11-18 19:42:24,507 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 151 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:24,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 11 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:24,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2022-11-18 19:42:24,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 372. [2022-11-18 19:42:24,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 3.2264150943396226) internal successors, (1197), 371 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:24,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1197 transitions. [2022-11-18 19:42:24,518 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1197 transitions. Word has length 18 [2022-11-18 19:42:24,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:24,519 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 1197 transitions. [2022-11-18 19:42:24,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:24,519 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1197 transitions. [2022-11-18 19:42:24,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:24,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:24,520 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:24,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:24,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-11-18 19:42:24,726 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:24,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:24,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1870989329, now seen corresponding path program 52 times [2022-11-18 19:42:24,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:24,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450128409] [2022-11-18 19:42:24,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:24,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:24,838 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:24,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:24,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450128409] [2022-11-18 19:42:24,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450128409] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:24,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603768463] [2022-11-18 19:42:24,839 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:42:24,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:24,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:24,841 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:24,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-11-18 19:42:25,025 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:42:25,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:25,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:25,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:25,107 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:25,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:25,176 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:25,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603768463] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:25,176 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:25,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-11-18 19:42:25,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932782065] [2022-11-18 19:42:25,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:25,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:42:25,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:25,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:42:25,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:42:25,177 INFO L87 Difference]: Start difference. First operand 372 states and 1197 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:25,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:25,702 INFO L93 Difference]: Finished difference Result 546 states and 1602 transitions. [2022-11-18 19:42:25,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 19:42:25,702 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:25,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:25,704 INFO L225 Difference]: With dead ends: 546 [2022-11-18 19:42:25,704 INFO L226 Difference]: Without dead ends: 534 [2022-11-18 19:42:25,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=223, Invalid=769, Unknown=0, NotChecked=0, Total=992 [2022-11-18 19:42:25,705 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 117 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:25,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 16 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:25,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-11-18 19:42:25,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 372. [2022-11-18 19:42:25,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 3.210242587601078) internal successors, (1191), 371 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:25,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1191 transitions. [2022-11-18 19:42:25,712 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1191 transitions. Word has length 18 [2022-11-18 19:42:25,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:25,713 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 1191 transitions. [2022-11-18 19:42:25,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:25,713 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1191 transitions. [2022-11-18 19:42:25,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:25,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:25,713 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:25,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:25,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-11-18 19:42:25,920 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:25,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:25,920 INFO L85 PathProgramCache]: Analyzing trace with hash -986336115, now seen corresponding path program 53 times [2022-11-18 19:42:25,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:25,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840910773] [2022-11-18 19:42:25,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:25,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:26,028 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:26,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:26,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840910773] [2022-11-18 19:42:26,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840910773] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:26,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053801118] [2022-11-18 19:42:26,028 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:42:26,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:26,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:26,029 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:26,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-11-18 19:42:26,189 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-18 19:42:26,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:26,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:26,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:26,293 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:26,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:26,363 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:26,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053801118] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:26,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:26,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-18 19:42:26,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675632300] [2022-11-18 19:42:26,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:26,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:42:26,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:26,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:42:26,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:42:26,365 INFO L87 Difference]: Start difference. First operand 372 states and 1191 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:26,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:26,933 INFO L93 Difference]: Finished difference Result 566 states and 1636 transitions. [2022-11-18 19:42:26,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 19:42:26,933 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:26,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:26,937 INFO L225 Difference]: With dead ends: 566 [2022-11-18 19:42:26,937 INFO L226 Difference]: Without dead ends: 566 [2022-11-18 19:42:26,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=287, Invalid=769, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 19:42:26,938 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 96 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:26,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 13 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:26,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2022-11-18 19:42:26,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 382. [2022-11-18 19:42:26,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.2125984251968505) internal successors, (1224), 381 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:26,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1224 transitions. [2022-11-18 19:42:26,950 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1224 transitions. Word has length 18 [2022-11-18 19:42:26,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:26,950 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 1224 transitions. [2022-11-18 19:42:26,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:26,951 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1224 transitions. [2022-11-18 19:42:26,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:26,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:26,952 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:26,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:27,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-11-18 19:42:27,158 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:27,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:27,159 INFO L85 PathProgramCache]: Analyzing trace with hash -965329907, now seen corresponding path program 54 times [2022-11-18 19:42:27,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:27,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489233273] [2022-11-18 19:42:27,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:27,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:27,288 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:27,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:27,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489233273] [2022-11-18 19:42:27,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489233273] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:27,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715824463] [2022-11-18 19:42:27,289 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:42:27,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:27,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:27,292 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:27,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-11-18 19:42:27,501 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-18 19:42:27,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:27,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:27,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:27,592 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:27,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:27,644 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:27,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715824463] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:27,645 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:27,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 15 [2022-11-18 19:42:27,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556309174] [2022-11-18 19:42:27,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:27,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:42:27,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:27,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:42:27,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:42:27,646 INFO L87 Difference]: Start difference. First operand 382 states and 1224 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:28,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:28,224 INFO L93 Difference]: Finished difference Result 650 states and 1860 transitions. [2022-11-18 19:42:28,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 19:42:28,224 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:28,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:28,228 INFO L225 Difference]: With dead ends: 650 [2022-11-18 19:42:28,228 INFO L226 Difference]: Without dead ends: 646 [2022-11-18 19:42:28,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 7 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=262, Invalid=608, Unknown=0, NotChecked=0, Total=870 [2022-11-18 19:42:28,229 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 117 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:28,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 11 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:42:28,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2022-11-18 19:42:28,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 422. [2022-11-18 19:42:28,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 421 states have (on average 3.2399049881235156) internal successors, (1364), 421 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:28,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 1364 transitions. [2022-11-18 19:42:28,243 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 1364 transitions. Word has length 18 [2022-11-18 19:42:28,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:28,243 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 1364 transitions. [2022-11-18 19:42:28,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:28,244 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 1364 transitions. [2022-11-18 19:42:28,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:28,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:28,245 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:28,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-11-18 19:42:28,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:28,446 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:28,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:28,446 INFO L85 PathProgramCache]: Analyzing trace with hash -549010291, now seen corresponding path program 55 times [2022-11-18 19:42:28,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:28,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878546748] [2022-11-18 19:42:28,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:28,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:28,539 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:28,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:28,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878546748] [2022-11-18 19:42:28,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878546748] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:28,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320812094] [2022-11-18 19:42:28,539 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:42:28,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:28,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:28,541 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:28,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-11-18 19:42:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:28,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:28,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:28,778 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:28,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:28,832 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:28,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320812094] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:28,832 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:28,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 15 [2022-11-18 19:42:28,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172073140] [2022-11-18 19:42:28,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:28,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:42:28,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:28,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:42:28,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:42:28,834 INFO L87 Difference]: Start difference. First operand 422 states and 1364 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:29,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:29,360 INFO L93 Difference]: Finished difference Result 756 states and 2182 transitions. [2022-11-18 19:42:29,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 19:42:29,360 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:29,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:29,363 INFO L225 Difference]: With dead ends: 756 [2022-11-18 19:42:29,364 INFO L226 Difference]: Without dead ends: 756 [2022-11-18 19:42:29,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=278, Invalid=592, Unknown=0, NotChecked=0, Total=870 [2022-11-18 19:42:29,364 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 149 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:29,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 10 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:29,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2022-11-18 19:42:29,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 442. [2022-11-18 19:42:29,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 3.251700680272109) internal successors, (1434), 441 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:29,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1434 transitions. [2022-11-18 19:42:29,381 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1434 transitions. Word has length 18 [2022-11-18 19:42:29,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:29,381 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 1434 transitions. [2022-11-18 19:42:29,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:29,382 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1434 transitions. [2022-11-18 19:42:29,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:29,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:29,383 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:29,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:29,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:29,590 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:29,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:29,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1496983361, now seen corresponding path program 56 times [2022-11-18 19:42:29,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:29,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336509983] [2022-11-18 19:42:29,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:29,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:29,700 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:42:29,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:29,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336509983] [2022-11-18 19:42:29,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336509983] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:29,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411241219] [2022-11-18 19:42:29,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:42:29,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:29,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:29,703 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:29,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-11-18 19:42:29,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:42:29,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:29,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:29,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:30,014 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:30,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:30,075 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:42:30,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411241219] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:30,076 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:30,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 15 [2022-11-18 19:42:30,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106540943] [2022-11-18 19:42:30,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:30,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:42:30,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:30,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:42:30,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:42:30,077 INFO L87 Difference]: Start difference. First operand 442 states and 1434 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:30,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:30,704 INFO L93 Difference]: Finished difference Result 688 states and 1984 transitions. [2022-11-18 19:42:30,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 19:42:30,705 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:30,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:30,707 INFO L225 Difference]: With dead ends: 688 [2022-11-18 19:42:30,707 INFO L226 Difference]: Without dead ends: 680 [2022-11-18 19:42:30,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 25 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=998, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 19:42:30,707 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 145 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:30,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 14 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:30,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2022-11-18 19:42:30,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 410. [2022-11-18 19:42:30,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 3.21760391198044) internal successors, (1316), 409 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:30,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 1316 transitions. [2022-11-18 19:42:30,721 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 1316 transitions. Word has length 18 [2022-11-18 19:42:30,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:30,722 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 1316 transitions. [2022-11-18 19:42:30,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:30,722 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 1316 transitions. [2022-11-18 19:42:30,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:30,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:30,723 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:30,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:30,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2022-11-18 19:42:30,930 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:30,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:30,930 INFO L85 PathProgramCache]: Analyzing trace with hash -357029521, now seen corresponding path program 57 times [2022-11-18 19:42:30,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:30,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19134084] [2022-11-18 19:42:30,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:30,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:31,024 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:31,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:31,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19134084] [2022-11-18 19:42:31,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19134084] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:31,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040984683] [2022-11-18 19:42:31,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:42:31,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:31,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:31,026 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:31,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-11-18 19:42:31,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 19:42:31,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:31,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:31,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:31,282 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:31,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:31,336 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:31,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040984683] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:31,336 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:31,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-11-18 19:42:31,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881681565] [2022-11-18 19:42:31,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:31,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:42:31,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:31,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:42:31,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:42:31,338 INFO L87 Difference]: Start difference. First operand 410 states and 1316 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:31,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:31,888 INFO L93 Difference]: Finished difference Result 632 states and 1858 transitions. [2022-11-18 19:42:31,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 19:42:31,889 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:31,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:31,891 INFO L225 Difference]: With dead ends: 632 [2022-11-18 19:42:31,891 INFO L226 Difference]: Without dead ends: 624 [2022-11-18 19:42:31,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=388, Invalid=1018, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 19:42:31,891 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 139 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:31,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 13 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:31,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2022-11-18 19:42:31,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 428. [2022-11-18 19:42:31,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 3.2248243559718968) internal successors, (1377), 427 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:31,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 1377 transitions. [2022-11-18 19:42:31,905 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 1377 transitions. Word has length 18 [2022-11-18 19:42:31,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:31,906 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 1377 transitions. [2022-11-18 19:42:31,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:31,906 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 1377 transitions. [2022-11-18 19:42:31,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:31,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:31,908 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:31,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:32,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:32,115 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:32,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:32,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1661032539, now seen corresponding path program 58 times [2022-11-18 19:42:32,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:32,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715270740] [2022-11-18 19:42:32,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:32,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:32,215 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:32,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:32,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715270740] [2022-11-18 19:42:32,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715270740] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:32,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434730211] [2022-11-18 19:42:32,216 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:42:32,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:32,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:32,217 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:32,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-11-18 19:42:32,379 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:42:32,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:32,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:32,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:32,497 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:32,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:32,561 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:32,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434730211] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:32,561 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:32,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2022-11-18 19:42:32,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143862723] [2022-11-18 19:42:32,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:32,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 19:42:32,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:32,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 19:42:32,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:42:32,563 INFO L87 Difference]: Start difference. First operand 428 states and 1377 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:33,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:33,149 INFO L93 Difference]: Finished difference Result 874 states and 2546 transitions. [2022-11-18 19:42:33,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 19:42:33,150 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:33,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:33,164 INFO L225 Difference]: With dead ends: 874 [2022-11-18 19:42:33,165 INFO L226 Difference]: Without dead ends: 874 [2022-11-18 19:42:33,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 22 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=262, Invalid=550, Unknown=0, NotChecked=0, Total=812 [2022-11-18 19:42:33,165 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 136 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:33,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 7 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:42:33,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2022-11-18 19:42:33,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 540. [2022-11-18 19:42:33,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 539 states have (on average 3.3191094619666046) internal successors, (1789), 539 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:33,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 1789 transitions. [2022-11-18 19:42:33,185 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 1789 transitions. Word has length 18 [2022-11-18 19:42:33,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:33,185 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 1789 transitions. [2022-11-18 19:42:33,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:33,186 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 1789 transitions. [2022-11-18 19:42:33,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:33,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:33,188 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:33,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-11-18 19:42:33,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:33,396 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:33,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:33,396 INFO L85 PathProgramCache]: Analyzing trace with hash -587941105, now seen corresponding path program 59 times [2022-11-18 19:42:33,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:33,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531911734] [2022-11-18 19:42:33,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:33,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:33,500 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:33,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:33,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531911734] [2022-11-18 19:42:33,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531911734] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:33,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908034236] [2022-11-18 19:42:33,501 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:42:33,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:33,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:33,503 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:33,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-11-18 19:42:33,689 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-18 19:42:33,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:33,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:33,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:33,786 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:33,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:33,834 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:42:33,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908034236] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:33,834 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:33,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2022-11-18 19:42:33,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476426038] [2022-11-18 19:42:33,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:33,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 19:42:33,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:33,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 19:42:33,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:42:33,835 INFO L87 Difference]: Start difference. First operand 540 states and 1789 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:34,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:34,496 INFO L93 Difference]: Finished difference Result 800 states and 2333 transitions. [2022-11-18 19:42:34,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 19:42:34,497 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:34,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:34,500 INFO L225 Difference]: With dead ends: 800 [2022-11-18 19:42:34,500 INFO L226 Difference]: Without dead ends: 796 [2022-11-18 19:42:34,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 23 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=477, Invalid=1163, Unknown=0, NotChecked=0, Total=1640 [2022-11-18 19:42:34,501 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 135 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:34,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 11 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:34,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-11-18 19:42:34,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 536. [2022-11-18 19:42:34,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 3.3065420560747665) internal successors, (1769), 535 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:34,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1769 transitions. [2022-11-18 19:42:34,519 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1769 transitions. Word has length 18 [2022-11-18 19:42:34,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:34,519 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 1769 transitions. [2022-11-18 19:42:34,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:34,519 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1769 transitions. [2022-11-18 19:42:34,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:34,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:34,521 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:34,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:34,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2022-11-18 19:42:34,726 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:34,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:34,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1853013309, now seen corresponding path program 60 times [2022-11-18 19:42:34,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:34,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153679045] [2022-11-18 19:42:34,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:34,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:34,828 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:34,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:34,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153679045] [2022-11-18 19:42:34,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153679045] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:34,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779619263] [2022-11-18 19:42:34,828 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:42:34,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:34,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:34,830 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:34,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-11-18 19:42:35,002 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-18 19:42:35,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:35,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:35,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:35,092 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:35,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:35,149 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:42:35,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779619263] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:35,150 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:35,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2022-11-18 19:42:35,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859322883] [2022-11-18 19:42:35,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:35,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:42:35,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:35,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:42:35,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:42:35,151 INFO L87 Difference]: Start difference. First operand 536 states and 1769 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:35,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:35,746 INFO L93 Difference]: Finished difference Result 820 states and 2416 transitions. [2022-11-18 19:42:35,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 19:42:35,746 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:35,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:35,749 INFO L225 Difference]: With dead ends: 820 [2022-11-18 19:42:35,749 INFO L226 Difference]: Without dead ends: 812 [2022-11-18 19:42:35,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=423, Invalid=1137, Unknown=0, NotChecked=0, Total=1560 [2022-11-18 19:42:35,750 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 145 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:35,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 11 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:35,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-11-18 19:42:35,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 560. [2022-11-18 19:42:35,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 559 states have (on average 3.332737030411449) internal successors, (1863), 559 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:35,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1863 transitions. [2022-11-18 19:42:35,763 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1863 transitions. Word has length 18 [2022-11-18 19:42:35,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:35,763 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 1863 transitions. [2022-11-18 19:42:35,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:35,763 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1863 transitions. [2022-11-18 19:42:35,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:35,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:35,765 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:35,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-11-18 19:42:35,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2022-11-18 19:42:35,966 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:35,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:35,966 INFO L85 PathProgramCache]: Analyzing trace with hash 213188815, now seen corresponding path program 61 times [2022-11-18 19:42:35,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:35,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156149841] [2022-11-18 19:42:35,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:35,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:36,072 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:36,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:36,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156149841] [2022-11-18 19:42:36,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156149841] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:36,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887678890] [2022-11-18 19:42:36,073 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:42:36,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:36,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:36,074 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:36,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-11-18 19:42:36,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:36,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:36,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:36,357 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:36,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:36,446 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:36,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887678890] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:36,447 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:36,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-11-18 19:42:36,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143874565] [2022-11-18 19:42:36,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:36,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 19:42:36,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:36,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 19:42:36,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:42:36,448 INFO L87 Difference]: Start difference. First operand 560 states and 1863 transitions. Second operand has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:37,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:37,074 INFO L93 Difference]: Finished difference Result 812 states and 2463 transitions. [2022-11-18 19:42:37,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 19:42:37,075 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:37,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:37,078 INFO L225 Difference]: With dead ends: 812 [2022-11-18 19:42:37,078 INFO L226 Difference]: Without dead ends: 800 [2022-11-18 19:42:37,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=411, Invalid=1229, Unknown=0, NotChecked=0, Total=1640 [2022-11-18 19:42:37,078 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 112 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:37,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 15 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:37,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-11-18 19:42:37,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 592. [2022-11-18 19:42:37,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 591 states have (on average 3.3451776649746194) internal successors, (1977), 591 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:37,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 1977 transitions. [2022-11-18 19:42:37,103 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 1977 transitions. Word has length 18 [2022-11-18 19:42:37,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:37,104 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 1977 transitions. [2022-11-18 19:42:37,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:37,104 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 1977 transitions. [2022-11-18 19:42:37,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:37,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:37,106 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:37,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:37,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:37,313 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:37,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:37,314 INFO L85 PathProgramCache]: Analyzing trace with hash 340209999, now seen corresponding path program 62 times [2022-11-18 19:42:37,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:37,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099437776] [2022-11-18 19:42:37,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:37,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:37,411 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:37,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:37,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099437776] [2022-11-18 19:42:37,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099437776] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:37,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296866053] [2022-11-18 19:42:37,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:42:37,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:37,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:37,413 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:37,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-11-18 19:42:37,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:42:37,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:37,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:37,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:37,651 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:37,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:37,702 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:37,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296866053] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:37,703 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:37,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-11-18 19:42:37,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812079732] [2022-11-18 19:42:37,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:37,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:42:37,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:37,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:42:37,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:42:37,704 INFO L87 Difference]: Start difference. First operand 592 states and 1977 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:37,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:37,913 INFO L93 Difference]: Finished difference Result 786 states and 2522 transitions. [2022-11-18 19:42:37,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:42:37,913 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:37,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:37,915 INFO L225 Difference]: With dead ends: 786 [2022-11-18 19:42:37,915 INFO L226 Difference]: Without dead ends: 786 [2022-11-18 19:42:37,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:42:37,916 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 63 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:37,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 19 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:42:37,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2022-11-18 19:42:37,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 602. [2022-11-18 19:42:37,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 601 states have (on average 3.3544093178036607) internal successors, (2016), 601 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:37,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 2016 transitions. [2022-11-18 19:42:37,929 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 2016 transitions. Word has length 18 [2022-11-18 19:42:37,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:37,929 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 2016 transitions. [2022-11-18 19:42:37,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:37,930 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 2016 transitions. [2022-11-18 19:42:37,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:37,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:37,931 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:37,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:38,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:38,134 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:38,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:38,135 INFO L85 PathProgramCache]: Analyzing trace with hash 451905239, now seen corresponding path program 63 times [2022-11-18 19:42:38,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:38,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122048251] [2022-11-18 19:42:38,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:38,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:38,246 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:38,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:38,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122048251] [2022-11-18 19:42:38,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122048251] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:38,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040883211] [2022-11-18 19:42:38,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:42:38,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:38,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:38,248 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:38,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-11-18 19:42:38,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 19:42:38,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:38,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:38,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:38,527 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:38,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:38,590 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:38,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040883211] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:38,591 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:38,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2022-11-18 19:42:38,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632586169] [2022-11-18 19:42:38,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:38,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:42:38,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:38,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:42:38,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:42:38,592 INFO L87 Difference]: Start difference. First operand 602 states and 2016 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:39,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:39,120 INFO L93 Difference]: Finished difference Result 950 states and 2885 transitions. [2022-11-18 19:42:39,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 19:42:39,121 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:39,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:39,124 INFO L225 Difference]: With dead ends: 950 [2022-11-18 19:42:39,125 INFO L226 Difference]: Without dead ends: 946 [2022-11-18 19:42:39,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=454, Unknown=0, NotChecked=0, Total=650 [2022-11-18 19:42:39,125 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 170 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:39,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 11 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:42:39,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2022-11-18 19:42:39,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 664. [2022-11-18 19:42:39,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 663 states have (on average 3.41025641025641) internal successors, (2261), 663 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:39,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 2261 transitions. [2022-11-18 19:42:39,149 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 2261 transitions. Word has length 18 [2022-11-18 19:42:39,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:39,149 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 2261 transitions. [2022-11-18 19:42:39,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:39,150 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 2261 transitions. [2022-11-18 19:42:39,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:39,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:39,152 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:39,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:39,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2022-11-18 19:42:39,360 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:39,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:39,360 INFO L85 PathProgramCache]: Analyzing trace with hash -357441387, now seen corresponding path program 64 times [2022-11-18 19:42:39,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:39,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311260778] [2022-11-18 19:42:39,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:39,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:39,461 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:39,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:39,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311260778] [2022-11-18 19:42:39,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311260778] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:39,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444941788] [2022-11-18 19:42:39,462 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:42:39,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:39,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:39,463 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:39,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-11-18 19:42:39,649 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:42:39,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:39,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:39,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:39,721 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:39,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:39,774 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:39,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444941788] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:39,775 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:39,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2022-11-18 19:42:39,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755107772] [2022-11-18 19:42:39,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:39,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:42:39,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:39,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:42:39,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:42:39,776 INFO L87 Difference]: Start difference. First operand 664 states and 2261 transitions. Second operand has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:40,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:40,259 INFO L93 Difference]: Finished difference Result 872 states and 2751 transitions. [2022-11-18 19:42:40,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 19:42:40,259 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:40,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:40,262 INFO L225 Difference]: With dead ends: 872 [2022-11-18 19:42:40,262 INFO L226 Difference]: Without dead ends: 872 [2022-11-18 19:42:40,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2022-11-18 19:42:40,263 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 119 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:40,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 12 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:40,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2022-11-18 19:42:40,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 672. [2022-11-18 19:42:40,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 671 states have (on average 3.4202682563338302) internal successors, (2295), 671 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:40,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 2295 transitions. [2022-11-18 19:42:40,281 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 2295 transitions. Word has length 18 [2022-11-18 19:42:40,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:40,282 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 2295 transitions. [2022-11-18 19:42:40,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:40,282 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 2295 transitions. [2022-11-18 19:42:40,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:40,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:40,283 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:40,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-11-18 19:42:40,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:40,484 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:40,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:40,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1736242227, now seen corresponding path program 65 times [2022-11-18 19:42:40,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:40,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22419497] [2022-11-18 19:42:40,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:40,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:40,590 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:40,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:40,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22419497] [2022-11-18 19:42:40,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22419497] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:40,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287644382] [2022-11-18 19:42:40,590 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:42:40,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:40,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:40,591 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:40,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-11-18 19:42:40,769 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-18 19:42:40,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:40,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:40,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:40,835 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:40,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:40,880 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:40,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287644382] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:40,880 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:40,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2022-11-18 19:42:40,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487088424] [2022-11-18 19:42:40,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:40,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:42:40,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:40,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:42:40,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:42:40,881 INFO L87 Difference]: Start difference. First operand 672 states and 2295 transitions. Second operand has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:41,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:41,360 INFO L93 Difference]: Finished difference Result 770 states and 2478 transitions. [2022-11-18 19:42:41,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 19:42:41,361 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:41,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:41,363 INFO L225 Difference]: With dead ends: 770 [2022-11-18 19:42:41,363 INFO L226 Difference]: Without dead ends: 762 [2022-11-18 19:42:41,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=370, Invalid=820, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 19:42:41,363 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 81 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:41,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 20 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:41,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-11-18 19:42:41,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 660. [2022-11-18 19:42:41,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 659 states have (on average 3.409711684370258) internal successors, (2247), 659 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:41,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 2247 transitions. [2022-11-18 19:42:41,380 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 2247 transitions. Word has length 18 [2022-11-18 19:42:41,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:41,380 INFO L495 AbstractCegarLoop]: Abstraction has 660 states and 2247 transitions. [2022-11-18 19:42:41,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:41,380 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 2247 transitions. [2022-11-18 19:42:41,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:41,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:41,382 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:41,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:41,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:41,586 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:41,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:41,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1797068405, now seen corresponding path program 66 times [2022-11-18 19:42:41,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:41,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918994631] [2022-11-18 19:42:41,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:41,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:41,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:41,668 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:41,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:41,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918994631] [2022-11-18 19:42:41,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918994631] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:41,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712283764] [2022-11-18 19:42:41,669 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:42:41,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:41,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:41,670 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:41,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-11-18 19:42:41,860 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-18 19:42:41,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:41,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:41,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:41,925 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:41,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:41,969 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:41,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712283764] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:41,969 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:41,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2022-11-18 19:42:41,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577016058] [2022-11-18 19:42:41,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:41,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:42:41,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:41,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:42:41,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:42:41,971 INFO L87 Difference]: Start difference. First operand 660 states and 2247 transitions. Second operand has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:42,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:42,446 INFO L93 Difference]: Finished difference Result 924 states and 2828 transitions. [2022-11-18 19:42:42,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 19:42:42,446 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:42,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:42,450 INFO L225 Difference]: With dead ends: 924 [2022-11-18 19:42:42,450 INFO L226 Difference]: Without dead ends: 920 [2022-11-18 19:42:42,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=283, Invalid=839, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:42:42,451 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 167 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:42,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 10 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:42,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2022-11-18 19:42:42,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 622. [2022-11-18 19:42:42,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 621 states have (on average 3.3558776167471818) internal successors, (2084), 621 states have internal predecessors, (2084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:42,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 2084 transitions. [2022-11-18 19:42:42,469 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 2084 transitions. Word has length 18 [2022-11-18 19:42:42,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:42,469 INFO L495 AbstractCegarLoop]: Abstraction has 622 states and 2084 transitions. [2022-11-18 19:42:42,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:42,469 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 2084 transitions. [2022-11-18 19:42:42,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:42,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:42,471 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:42,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:42,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:42,677 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:42,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:42,678 INFO L85 PathProgramCache]: Analyzing trace with hash 643886009, now seen corresponding path program 67 times [2022-11-18 19:42:42,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:42,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170994022] [2022-11-18 19:42:42,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:42,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:42,782 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:42,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:42,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170994022] [2022-11-18 19:42:42,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170994022] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:42,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670153265] [2022-11-18 19:42:42,783 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:42:42,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:42,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:42,784 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:42,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-11-18 19:42:42,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:42,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:42,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:43,002 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:43,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:43,050 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:43,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670153265] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:43,050 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:43,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2022-11-18 19:42:43,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051245556] [2022-11-18 19:42:43,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:43,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:42:43,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:43,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:42:43,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:42:43,051 INFO L87 Difference]: Start difference. First operand 622 states and 2084 transitions. Second operand has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:43,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:43,450 INFO L93 Difference]: Finished difference Result 888 states and 2731 transitions. [2022-11-18 19:42:43,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 19:42:43,450 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:43,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:43,453 INFO L225 Difference]: With dead ends: 888 [2022-11-18 19:42:43,453 INFO L226 Difference]: Without dead ends: 882 [2022-11-18 19:42:43,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=220, Invalid=710, Unknown=0, NotChecked=0, Total=930 [2022-11-18 19:42:43,454 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 144 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:43,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 13 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:42:43,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2022-11-18 19:42:43,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 642. [2022-11-18 19:42:43,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 3.360374414976599) internal successors, (2154), 641 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:43,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 2154 transitions. [2022-11-18 19:42:43,469 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 2154 transitions. Word has length 18 [2022-11-18 19:42:43,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:43,469 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 2154 transitions. [2022-11-18 19:42:43,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:43,469 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 2154 transitions. [2022-11-18 19:42:43,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:43,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:43,470 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:43,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:43,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:43,671 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:43,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:43,671 INFO L85 PathProgramCache]: Analyzing trace with hash -995938485, now seen corresponding path program 68 times [2022-11-18 19:42:43,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:43,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659500867] [2022-11-18 19:42:43,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:43,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:43,768 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:43,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:43,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659500867] [2022-11-18 19:42:43,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659500867] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:43,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971908008] [2022-11-18 19:42:43,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:42:43,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:43,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:43,769 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:43,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-11-18 19:42:43,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:42:43,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:43,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:43,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:43,997 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:43,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:44,051 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:44,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971908008] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:44,051 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:44,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-11-18 19:42:44,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236616972] [2022-11-18 19:42:44,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:44,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:42:44,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:44,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:42:44,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:42:44,053 INFO L87 Difference]: Start difference. First operand 642 states and 2154 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:44,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:44,439 INFO L93 Difference]: Finished difference Result 826 states and 2585 transitions. [2022-11-18 19:42:44,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 19:42:44,440 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:44,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:44,443 INFO L225 Difference]: With dead ends: 826 [2022-11-18 19:42:44,443 INFO L226 Difference]: Without dead ends: 820 [2022-11-18 19:42:44,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=209, Invalid=721, Unknown=0, NotChecked=0, Total=930 [2022-11-18 19:42:44,444 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 116 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:44,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 17 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:42:44,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2022-11-18 19:42:44,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 642. [2022-11-18 19:42:44,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 3.354134165366615) internal successors, (2150), 641 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:44,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 2150 transitions. [2022-11-18 19:42:44,461 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 2150 transitions. Word has length 18 [2022-11-18 19:42:44,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:44,461 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 2150 transitions. [2022-11-18 19:42:44,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:44,462 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 2150 transitions. [2022-11-18 19:42:44,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:44,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:44,464 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:44,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:44,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:44,670 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:44,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:44,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1103650065, now seen corresponding path program 69 times [2022-11-18 19:42:44,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:44,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889227692] [2022-11-18 19:42:44,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:44,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:44,784 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:44,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:44,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889227692] [2022-11-18 19:42:44,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889227692] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:44,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013117913] [2022-11-18 19:42:44,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:42:44,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:44,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:44,787 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:44,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-11-18 19:42:44,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 19:42:44,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:44,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:44,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:45,035 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:45,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:45,078 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:45,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013117913] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:45,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:45,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-11-18 19:42:45,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034944400] [2022-11-18 19:42:45,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:45,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:42:45,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:45,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:42:45,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:42:45,080 INFO L87 Difference]: Start difference. First operand 642 states and 2150 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:45,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:45,248 INFO L93 Difference]: Finished difference Result 754 states and 2458 transitions. [2022-11-18 19:42:45,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:42:45,248 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:45,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:45,250 INFO L225 Difference]: With dead ends: 754 [2022-11-18 19:42:45,251 INFO L226 Difference]: Without dead ends: 746 [2022-11-18 19:42:45,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:42:45,251 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 52 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:45,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 17 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:42:45,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-11-18 19:42:45,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 642. [2022-11-18 19:42:45,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 3.3510140405616227) internal successors, (2148), 641 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:45,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 2148 transitions. [2022-11-18 19:42:45,263 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 2148 transitions. Word has length 18 [2022-11-18 19:42:45,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:45,263 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 2148 transitions. [2022-11-18 19:42:45,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:45,263 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 2148 transitions. [2022-11-18 19:42:45,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:45,264 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:45,264 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:45,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:45,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2022-11-18 19:42:45,465 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:45,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:45,465 INFO L85 PathProgramCache]: Analyzing trace with hash -509797873, now seen corresponding path program 70 times [2022-11-18 19:42:45,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:45,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76281176] [2022-11-18 19:42:45,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:45,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:45,554 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:45,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:45,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76281176] [2022-11-18 19:42:45,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76281176] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:45,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123394602] [2022-11-18 19:42:45,555 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:42:45,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:45,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:45,556 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:45,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-11-18 19:42:45,714 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:42:45,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:45,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:45,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:45,785 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:45,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:45,838 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:45,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123394602] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:45,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:45,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 15 [2022-11-18 19:42:45,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993012797] [2022-11-18 19:42:45,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:45,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:42:45,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:45,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:42:45,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:42:45,840 INFO L87 Difference]: Start difference. First operand 642 states and 2148 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:46,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:46,293 INFO L93 Difference]: Finished difference Result 924 states and 2840 transitions. [2022-11-18 19:42:46,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 19:42:46,293 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:46,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:46,296 INFO L225 Difference]: With dead ends: 924 [2022-11-18 19:42:46,296 INFO L226 Difference]: Without dead ends: 922 [2022-11-18 19:42:46,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=278, Invalid=592, Unknown=0, NotChecked=0, Total=870 [2022-11-18 19:42:46,297 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 128 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:46,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 9 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:46,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2022-11-18 19:42:46,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 672. [2022-11-18 19:42:46,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 671 states have (on average 3.348733233979136) internal successors, (2247), 671 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:46,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 2247 transitions. [2022-11-18 19:42:46,317 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 2247 transitions. Word has length 18 [2022-11-18 19:42:46,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:46,317 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 2247 transitions. [2022-11-18 19:42:46,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:46,317 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 2247 transitions. [2022-11-18 19:42:46,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:46,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:46,319 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:46,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:46,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:46,525 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:46,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:46,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1888598713, now seen corresponding path program 71 times [2022-11-18 19:42:46,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:46,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598013107] [2022-11-18 19:42:46,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:46,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:46,599 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:42:46,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:46,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598013107] [2022-11-18 19:42:46,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598013107] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:46,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103901152] [2022-11-18 19:42:46,600 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:42:46,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:46,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:46,601 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:46,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-11-18 19:42:46,760 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-18 19:42:46,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:46,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:46,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:46,841 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:46,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:46,900 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:42:46,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103901152] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:46,900 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:46,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 15 [2022-11-18 19:42:46,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299946287] [2022-11-18 19:42:46,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:46,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:42:46,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:46,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:42:46,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:42:46,902 INFO L87 Difference]: Start difference. First operand 672 states and 2247 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:47,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:47,507 INFO L93 Difference]: Finished difference Result 858 states and 2612 transitions. [2022-11-18 19:42:47,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 19:42:47,507 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:47,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:47,509 INFO L225 Difference]: With dead ends: 858 [2022-11-18 19:42:47,510 INFO L226 Difference]: Without dead ends: 842 [2022-11-18 19:42:47,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=998, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 19:42:47,510 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 98 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:47,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 16 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:47,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-11-18 19:42:47,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 642. [2022-11-18 19:42:47,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 3.3260530421216847) internal successors, (2132), 641 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:47,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 2132 transitions. [2022-11-18 19:42:47,527 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 2132 transitions. Word has length 18 [2022-11-18 19:42:47,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:47,527 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 2132 transitions. [2022-11-18 19:42:47,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:47,528 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 2132 transitions. [2022-11-18 19:42:47,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:47,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:47,529 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:47,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:47,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:47,736 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:47,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:47,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1681751793, now seen corresponding path program 72 times [2022-11-18 19:42:47,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:47,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653357938] [2022-11-18 19:42:47,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:47,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:47,837 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:47,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:47,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653357938] [2022-11-18 19:42:47,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653357938] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:47,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847504813] [2022-11-18 19:42:47,838 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:42:47,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:47,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:47,839 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:47,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-11-18 19:42:48,006 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-18 19:42:48,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:48,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:48,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:48,081 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:48,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:48,140 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:48,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847504813] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:48,140 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:48,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-11-18 19:42:48,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893096381] [2022-11-18 19:42:48,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:48,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:42:48,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:48,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:42:48,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:42:48,141 INFO L87 Difference]: Start difference. First operand 642 states and 2132 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:48,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:48,673 INFO L93 Difference]: Finished difference Result 790 states and 2460 transitions. [2022-11-18 19:42:48,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 19:42:48,673 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:48,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:48,675 INFO L225 Difference]: With dead ends: 790 [2022-11-18 19:42:48,675 INFO L226 Difference]: Without dead ends: 774 [2022-11-18 19:42:48,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=388, Invalid=1018, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 19:42:48,675 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 79 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:48,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 21 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:48,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2022-11-18 19:42:48,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 656. [2022-11-18 19:42:48,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 655 states have (on average 3.33587786259542) internal successors, (2185), 655 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:48,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 2185 transitions. [2022-11-18 19:42:48,688 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 2185 transitions. Word has length 18 [2022-11-18 19:42:48,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:48,688 INFO L495 AbstractCegarLoop]: Abstraction has 656 states and 2185 transitions. [2022-11-18 19:42:48,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:48,689 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 2185 transitions. [2022-11-18 19:42:48,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:48,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:48,690 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:48,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:48,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2022-11-18 19:42:48,897 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:48,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:48,897 INFO L85 PathProgramCache]: Analyzing trace with hash -937881643, now seen corresponding path program 73 times [2022-11-18 19:42:48,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:48,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935229105] [2022-11-18 19:42:48,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:48,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:48,981 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:48,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:48,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935229105] [2022-11-18 19:42:48,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935229105] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:48,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720796311] [2022-11-18 19:42:48,981 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:42:48,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:48,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:48,983 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:48,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-11-18 19:42:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:49,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:49,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:49,272 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:49,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:49,316 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:49,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720796311] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:49,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:49,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2022-11-18 19:42:49,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125984551] [2022-11-18 19:42:49,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:49,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 19:42:49,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:49,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 19:42:49,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:42:49,317 INFO L87 Difference]: Start difference. First operand 656 states and 2185 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:49,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:49,757 INFO L93 Difference]: Finished difference Result 1024 states and 3141 transitions. [2022-11-18 19:42:49,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 19:42:49,758 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:49,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:49,760 INFO L225 Difference]: With dead ends: 1024 [2022-11-18 19:42:49,760 INFO L226 Difference]: Without dead ends: 1024 [2022-11-18 19:42:49,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 22 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=262, Invalid=550, Unknown=0, NotChecked=0, Total=812 [2022-11-18 19:42:49,760 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 130 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:49,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 7 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:49,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2022-11-18 19:42:49,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 754. [2022-11-18 19:42:49,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 3.3758300132802126) internal successors, (2542), 753 states have internal predecessors, (2542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:49,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 2542 transitions. [2022-11-18 19:42:49,775 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 2542 transitions. Word has length 18 [2022-11-18 19:42:49,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:49,775 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 2542 transitions. [2022-11-18 19:42:49,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:49,775 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 2542 transitions. [2022-11-18 19:42:49,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:49,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:49,777 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:49,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-11-18 19:42:49,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2022-11-18 19:42:49,978 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:49,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:49,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1978284813, now seen corresponding path program 74 times [2022-11-18 19:42:49,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:49,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702079079] [2022-11-18 19:42:49,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:49,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:50,082 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:50,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:50,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702079079] [2022-11-18 19:42:50,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702079079] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:50,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577705956] [2022-11-18 19:42:50,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:42:50,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:50,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:50,086 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:50,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-11-18 19:42:50,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:42:50,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:50,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:50,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:50,375 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:50,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:50,425 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:42:50,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577705956] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:50,425 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:50,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2022-11-18 19:42:50,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262320971] [2022-11-18 19:42:50,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:50,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 19:42:50,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:50,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 19:42:50,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:42:50,426 INFO L87 Difference]: Start difference. First operand 754 states and 2542 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:51,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:51,047 INFO L93 Difference]: Finished difference Result 976 states and 2982 transitions. [2022-11-18 19:42:51,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 19:42:51,047 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:51,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:51,049 INFO L225 Difference]: With dead ends: 976 [2022-11-18 19:42:51,049 INFO L226 Difference]: Without dead ends: 968 [2022-11-18 19:42:51,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 22 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=477, Invalid=1163, Unknown=0, NotChecked=0, Total=1640 [2022-11-18 19:42:51,050 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 127 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:51,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 13 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:51,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-11-18 19:42:51,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 734. [2022-11-18 19:42:51,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 733 states have (on average 3.3478854024556615) internal successors, (2454), 733 states have internal predecessors, (2454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:51,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 2454 transitions. [2022-11-18 19:42:51,064 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 2454 transitions. Word has length 18 [2022-11-18 19:42:51,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:51,064 INFO L495 AbstractCegarLoop]: Abstraction has 734 states and 2454 transitions. [2022-11-18 19:42:51,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:51,064 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 2454 transitions. [2022-11-18 19:42:51,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:51,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:51,066 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:51,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:51,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-11-18 19:42:51,272 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:51,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:51,273 INFO L85 PathProgramCache]: Analyzing trace with hash -2109835563, now seen corresponding path program 75 times [2022-11-18 19:42:51,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:51,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016089970] [2022-11-18 19:42:51,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:51,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:51,404 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:51,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:51,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016089970] [2022-11-18 19:42:51,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016089970] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:51,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094193844] [2022-11-18 19:42:51,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:42:51,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:51,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:51,406 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:51,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-11-18 19:42:51,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 19:42:51,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:51,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:51,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:51,692 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:51,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:51,745 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:42:51,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094193844] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:51,746 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:51,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2022-11-18 19:42:51,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417347177] [2022-11-18 19:42:51,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:51,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:42:51,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:51,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:42:51,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:42:51,747 INFO L87 Difference]: Start difference. First operand 734 states and 2454 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:52,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:52,376 INFO L93 Difference]: Finished difference Result 996 states and 3037 transitions. [2022-11-18 19:42:52,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 19:42:52,376 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:52,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:52,379 INFO L225 Difference]: With dead ends: 996 [2022-11-18 19:42:52,379 INFO L226 Difference]: Without dead ends: 980 [2022-11-18 19:42:52,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=423, Invalid=1137, Unknown=0, NotChecked=0, Total=1560 [2022-11-18 19:42:52,379 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 128 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:52,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 17 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:52,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2022-11-18 19:42:52,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 760. [2022-11-18 19:42:52,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 759 states have (on average 3.3662714097496704) internal successors, (2555), 759 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:52,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 2555 transitions. [2022-11-18 19:42:52,399 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 2555 transitions. Word has length 18 [2022-11-18 19:42:52,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:52,400 INFO L495 AbstractCegarLoop]: Abstraction has 760 states and 2555 transitions. [2022-11-18 19:42:52,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:52,400 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 2555 transitions. [2022-11-18 19:42:52,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:52,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:52,402 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:52,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:52,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:52,608 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:52,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:52,608 INFO L85 PathProgramCache]: Analyzing trace with hash 7451661, now seen corresponding path program 76 times [2022-11-18 19:42:52,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:52,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351210390] [2022-11-18 19:42:52,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:52,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:52,724 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:52,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:52,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351210390] [2022-11-18 19:42:52,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351210390] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:52,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928165634] [2022-11-18 19:42:52,725 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:42:52,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:52,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:52,727 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:52,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-11-18 19:42:52,888 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:42:52,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:52,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:42:52,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:52,968 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:52,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:53,023 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:53,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928165634] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:53,024 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:53,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-11-18 19:42:53,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922434261] [2022-11-18 19:42:53,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:53,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 19:42:53,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:53,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 19:42:53,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:42:53,025 INFO L87 Difference]: Start difference. First operand 760 states and 2555 transitions. Second operand has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:53,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:53,557 INFO L93 Difference]: Finished difference Result 970 states and 3040 transitions. [2022-11-18 19:42:53,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 19:42:53,557 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:42:53,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:53,559 INFO L225 Difference]: With dead ends: 970 [2022-11-18 19:42:53,559 INFO L226 Difference]: Without dead ends: 946 [2022-11-18 19:42:53,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=411, Invalid=1229, Unknown=0, NotChecked=0, Total=1640 [2022-11-18 19:42:53,560 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 104 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:53,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 17 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:53,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2022-11-18 19:42:53,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 790. [2022-11-18 19:42:53,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 789 states have (on average 3.3776932826362485) internal successors, (2665), 789 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:53,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 2665 transitions. [2022-11-18 19:42:53,573 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 2665 transitions. Word has length 18 [2022-11-18 19:42:53,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:53,573 INFO L495 AbstractCegarLoop]: Abstraction has 790 states and 2665 transitions. [2022-11-18 19:42:53,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:53,573 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 2665 transitions. [2022-11-18 19:42:53,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 19:42:53,575 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:53,575 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:53,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:53,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:53,776 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:53,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:53,776 INFO L85 PathProgramCache]: Analyzing trace with hash 2064459214, now seen corresponding path program 77 times [2022-11-18 19:42:53,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:53,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910029207] [2022-11-18 19:42:53,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:53,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:54,432 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:54,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:54,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910029207] [2022-11-18 19:42:54,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910029207] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:54,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289330608] [2022-11-18 19:42:54,433 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:42:54,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:54,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:54,434 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:54,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-11-18 19:42:54,612 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-18 19:42:54,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:54,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 134 conjunts are in the unsatisfiable core [2022-11-18 19:42:54,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:54,831 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:54,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:55,089 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:55,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289330608] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:55,089 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:55,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-11-18 19:42:55,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370307431] [2022-11-18 19:42:55,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:55,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 19:42:55,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:55,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 19:42:55,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:42:55,090 INFO L87 Difference]: Start difference. First operand 790 states and 2665 transitions. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:55,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:55,841 INFO L93 Difference]: Finished difference Result 1002 states and 3117 transitions. [2022-11-18 19:42:55,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:42:55,842 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-18 19:42:55,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:55,844 INFO L225 Difference]: With dead ends: 1002 [2022-11-18 19:42:55,844 INFO L226 Difference]: Without dead ends: 980 [2022-11-18 19:42:55,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2022-11-18 19:42:55,844 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 93 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:55,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 74 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:42:55,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2022-11-18 19:42:55,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 864. [2022-11-18 19:42:55,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 863 states have (on average 3.3279258400927) internal successors, (2872), 863 states have internal predecessors, (2872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:55,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 2872 transitions. [2022-11-18 19:42:55,865 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 2872 transitions. Word has length 19 [2022-11-18 19:42:55,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:55,865 INFO L495 AbstractCegarLoop]: Abstraction has 864 states and 2872 transitions. [2022-11-18 19:42:55,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:55,865 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 2872 transitions. [2022-11-18 19:42:55,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 19:42:55,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:55,867 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:55,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:56,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:56,074 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:56,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:56,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1371683672, now seen corresponding path program 78 times [2022-11-18 19:42:56,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:56,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790831213] [2022-11-18 19:42:56,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:56,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:56,851 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:56,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:56,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790831213] [2022-11-18 19:42:56,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790831213] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:56,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067308566] [2022-11-18 19:42:56,852 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:42:56,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:56,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:56,854 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:56,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-11-18 19:42:57,063 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-18 19:42:57,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:57,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 134 conjunts are in the unsatisfiable core [2022-11-18 19:42:57,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:57,308 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:57,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:57,642 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:57,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067308566] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:57,643 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:57,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-11-18 19:42:57,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490860291] [2022-11-18 19:42:57,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:57,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 19:42:57,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:57,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 19:42:57,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2022-11-18 19:42:57,644 INFO L87 Difference]: Start difference. First operand 864 states and 2872 transitions. Second operand has 25 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:58,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:58,262 INFO L93 Difference]: Finished difference Result 1071 states and 3337 transitions. [2022-11-18 19:42:58,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:42:58,262 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-18 19:42:58,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:58,264 INFO L225 Difference]: With dead ends: 1071 [2022-11-18 19:42:58,264 INFO L226 Difference]: Without dead ends: 1066 [2022-11-18 19:42:58,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2022-11-18 19:42:58,265 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 139 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:58,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 63 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:42:58,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2022-11-18 19:42:58,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 920. [2022-11-18 19:42:58,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 919 states have (on average 3.3623503808487487) internal successors, (3090), 919 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:58,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 3090 transitions. [2022-11-18 19:42:58,282 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 3090 transitions. Word has length 19 [2022-11-18 19:42:58,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:58,282 INFO L495 AbstractCegarLoop]: Abstraction has 920 states and 3090 transitions. [2022-11-18 19:42:58,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:58,283 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 3090 transitions. [2022-11-18 19:42:58,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 19:42:58,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:58,285 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:58,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:58,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2022-11-18 19:42:58,491 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:42:58,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:58,492 INFO L85 PathProgramCache]: Analyzing trace with hash -2064409094, now seen corresponding path program 79 times [2022-11-18 19:42:58,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:58,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977843323] [2022-11-18 19:42:58,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:58,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:58,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:59,073 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:59,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:59,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977843323] [2022-11-18 19:42:59,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977843323] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:59,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115763986] [2022-11-18 19:42:59,074 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:42:59,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:59,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:59,075 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:59,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-11-18 19:42:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:59,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 134 conjunts are in the unsatisfiable core [2022-11-18 19:42:59,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:59,476 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:59,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:59,780 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:59,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115763986] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:59,781 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:59,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-11-18 19:42:59,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553454884] [2022-11-18 19:42:59,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:59,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 19:42:59,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:59,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 19:42:59,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2022-11-18 19:42:59,782 INFO L87 Difference]: Start difference. First operand 920 states and 3090 transitions. Second operand has 25 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:43:00,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:43:00,452 INFO L93 Difference]: Finished difference Result 1060 states and 3320 transitions. [2022-11-18 19:43:00,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:43:00,453 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-18 19:43:00,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:43:00,454 INFO L225 Difference]: With dead ends: 1060 [2022-11-18 19:43:00,454 INFO L226 Difference]: Without dead ends: 1048 [2022-11-18 19:43:00,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2022-11-18 19:43:00,455 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 137 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:43:00,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 68 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:43:00,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2022-11-18 19:43:00,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 894. [2022-11-18 19:43:00,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 893 states have (on average 3.362821948488242) internal successors, (3003), 893 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:43:00,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 3003 transitions. [2022-11-18 19:43:00,485 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 3003 transitions. Word has length 19 [2022-11-18 19:43:00,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:43:00,485 INFO L495 AbstractCegarLoop]: Abstraction has 894 states and 3003 transitions. [2022-11-18 19:43:00,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:43:00,485 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 3003 transitions. [2022-11-18 19:43:00,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 19:43:00,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:43:00,487 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:43:00,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-11-18 19:43:00,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:00,687 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:43:00,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:00,688 INFO L85 PathProgramCache]: Analyzing trace with hash -7117168, now seen corresponding path program 80 times [2022-11-18 19:43:00,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:00,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949478198] [2022-11-18 19:43:00,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:00,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:01,266 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:43:01,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:01,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949478198] [2022-11-18 19:43:01,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949478198] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:43:01,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760162338] [2022-11-18 19:43:01,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:43:01,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:01,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:43:01,267 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:43:01,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-11-18 19:43:01,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:43:01,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:43:01,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 134 conjunts are in the unsatisfiable core [2022-11-18 19:43:01,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:43:01,666 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:43:01,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:43:01,964 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:43:01,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760162338] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:43:01,964 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:43:01,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-11-18 19:43:01,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639404526] [2022-11-18 19:43:01,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:43:01,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 19:43:01,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:01,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 19:43:01,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2022-11-18 19:43:01,966 INFO L87 Difference]: Start difference. First operand 894 states and 3003 transitions. Second operand has 23 states, 22 states have (on average 2.0) internal successors, (44), 22 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:43:02,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:43:02,710 INFO L93 Difference]: Finished difference Result 1049 states and 3264 transitions. [2022-11-18 19:43:02,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:43:02,710 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.0) internal successors, (44), 22 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-18 19:43:02,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:43:02,712 INFO L225 Difference]: With dead ends: 1049 [2022-11-18 19:43:02,712 INFO L226 Difference]: Without dead ends: 1044 [2022-11-18 19:43:02,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2022-11-18 19:43:02,713 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 111 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:43:02,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 68 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:43:02,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2022-11-18 19:43:02,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 894. [2022-11-18 19:43:02,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 893 states have (on average 3.362821948488242) internal successors, (3003), 893 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:43:02,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 3003 transitions. [2022-11-18 19:43:02,736 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 3003 transitions. Word has length 19 [2022-11-18 19:43:02,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:43:02,737 INFO L495 AbstractCegarLoop]: Abstraction has 894 states and 3003 transitions. [2022-11-18 19:43:02,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.0) internal successors, (44), 22 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:43:02,737 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 3003 transitions. [2022-11-18 19:43:02,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 19:43:02,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:43:02,740 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:43:02,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-11-18 19:43:02,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:02,945 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:43:02,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:02,946 INFO L85 PathProgramCache]: Analyzing trace with hash 199729752, now seen corresponding path program 81 times [2022-11-18 19:43:02,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:02,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145625050] [2022-11-18 19:43:02,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:02,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:03,503 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:43:03,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:03,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145625050] [2022-11-18 19:43:03,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145625050] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:43:03,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371133538] [2022-11-18 19:43:03,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:43:03,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:03,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:43:03,507 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:43:03,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-11-18 19:43:03,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 19:43:03,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:43:03,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 134 conjunts are in the unsatisfiable core [2022-11-18 19:43:03,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:43:03,909 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:43:03,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:43:04,186 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:43:04,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371133538] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:43:04,187 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:43:04,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-11-18 19:43:04,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467327516] [2022-11-18 19:43:04,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:43:04,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 19:43:04,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:04,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 19:43:04,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:43:04,188 INFO L87 Difference]: Start difference. First operand 894 states and 3003 transitions. Second operand has 21 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:43:04,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:43:04,918 INFO L93 Difference]: Finished difference Result 1011 states and 3194 transitions. [2022-11-18 19:43:04,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:43:04,919 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-18 19:43:04,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:43:04,921 INFO L225 Difference]: With dead ends: 1011 [2022-11-18 19:43:04,921 INFO L226 Difference]: Without dead ends: 1006 [2022-11-18 19:43:04,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2022-11-18 19:43:04,921 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 99 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:43:04,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 66 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:43:04,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2022-11-18 19:43:04,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 894. [2022-11-18 19:43:04,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 893 states have (on average 3.362821948488242) internal successors, (3003), 893 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:43:04,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 3003 transitions. [2022-11-18 19:43:04,939 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 3003 transitions. Word has length 19 [2022-11-18 19:43:04,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:43:04,940 INFO L495 AbstractCegarLoop]: Abstraction has 894 states and 3003 transitions. [2022-11-18 19:43:04,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:43:04,940 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 3003 transitions. [2022-11-18 19:43:04,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 19:43:04,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:43:04,943 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:43:04,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-11-18 19:43:05,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2022-11-18 19:43:05,149 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:43:05,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:05,150 INFO L85 PathProgramCache]: Analyzing trace with hash 577075726, now seen corresponding path program 82 times [2022-11-18 19:43:05,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:05,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387015253] [2022-11-18 19:43:05,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:05,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:05,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:05,983 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:43:05,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:05,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387015253] [2022-11-18 19:43:05,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387015253] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:43:05,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431352653] [2022-11-18 19:43:05,983 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:43:05,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:05,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:43:05,985 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:43:05,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-11-18 19:43:06,178 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:43:06,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:43:06,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 134 conjunts are in the unsatisfiable core [2022-11-18 19:43:06,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:43:06,392 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:43:06,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:43:06,703 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:43:06,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431352653] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:43:06,704 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:43:06,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 9] total 20 [2022-11-18 19:43:06,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492499574] [2022-11-18 19:43:06,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:43:06,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 19:43:06,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:06,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 19:43:06,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:43:06,705 INFO L87 Difference]: Start difference. First operand 894 states and 3003 transitions. Second operand has 22 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:43:07,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:43:07,102 INFO L93 Difference]: Finished difference Result 1021 states and 3282 transitions. [2022-11-18 19:43:07,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:43:07,103 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-18 19:43:07,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:43:07,105 INFO L225 Difference]: With dead ends: 1021 [2022-11-18 19:43:07,105 INFO L226 Difference]: Without dead ends: 1016 [2022-11-18 19:43:07,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2022-11-18 19:43:07,105 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 132 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:43:07,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 47 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:43:07,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2022-11-18 19:43:07,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 916. [2022-11-18 19:43:07,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 915 states have (on average 3.3814207650273223) internal successors, (3094), 915 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:43:07,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 3094 transitions. WARNING: YOUR LOGFILE WAS TOO LONG, SOME LINES IN THE MIDDLE WERE REMOVED. [2022-11-18 19:48:59,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819621141] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:48:59,145 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:48:59,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 27 [2022-11-18 19:48:59,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264425775] [2022-11-18 19:48:59,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:48:59,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 19:48:59,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:59,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 19:48:59,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2022-11-18 19:48:59,146 INFO L87 Difference]: Start difference. First operand 8002 states and 28666 transitions. Second operand has 27 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:00,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:00,614 INFO L93 Difference]: Finished difference Result 9790 states and 33649 transitions. [2022-11-18 19:49:00,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-11-18 19:49:00,614 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 19:49:00,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:00,641 INFO L225 Difference]: With dead ends: 9790 [2022-11-18 19:49:00,641 INFO L226 Difference]: Without dead ends: 9778 [2022-11-18 19:49:00,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 23 SyntacticMatches, 8 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2403 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1503, Invalid=4659, Unknown=0, NotChecked=0, Total=6162 [2022-11-18 19:49:00,642 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 248 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:00,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 16 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:49:00,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9778 states. [2022-11-18 19:49:00,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9778 to 8160. [2022-11-18 19:49:00,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8160 states, 8159 states have (on average 3.58757200637333) internal successors, (29271), 8159 states have internal predecessors, (29271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:00,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8160 states to 8160 states and 29271 transitions. [2022-11-18 19:49:00,859 INFO L78 Accepts]: Start accepts. Automaton has 8160 states and 29271 transitions. Word has length 22 [2022-11-18 19:49:00,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:00,859 INFO L495 AbstractCegarLoop]: Abstraction has 8160 states and 29271 transitions. [2022-11-18 19:49:00,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:00,859 INFO L276 IsEmpty]: Start isEmpty. Operand 8160 states and 29271 transitions. [2022-11-18 19:49:00,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 19:49:00,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:00,873 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:00,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (251)] Ended with exit code 0 [2022-11-18 19:49:01,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262,251 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:01,074 INFO L420 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:49:01,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:01,074 INFO L85 PathProgramCache]: Analyzing trace with hash -742841347, now seen corresponding path program 248 times [2022-11-18 19:49:01,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:01,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227213883] [2022-11-18 19:49:01,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:01,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:01,228 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:01,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:01,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227213883] [2022-11-18 19:49:01,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227213883] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:01,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248478121] [2022-11-18 19:49:01,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:49:01,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:01,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:01,229 INFO L229 MonitoredProcess]: Starting monitored process 252 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:01,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (252)] Waiting until timeout for monitored process [2022-11-18 19:49:01,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:49:01,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:49:01,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:49:01,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:01,722 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:01,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:01,818 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:49:01,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248478121] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:01,819 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:01,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 28 [2022-11-18 19:49:01,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577243417] [2022-11-18 19:49:01,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:01,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 19:49:01,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:01,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 19:49:01,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=582, Unknown=0, NotChecked=0, Total=756 [2022-11-18 19:49:01,820 INFO L87 Difference]: Start difference. First operand 8160 states and 29271 transitions. Second operand has 28 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:03,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:03,159 INFO L93 Difference]: Finished difference Result 9926 states and 34162 transitions. [2022-11-18 19:49:03,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-11-18 19:49:03,159 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 19:49:03,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:03,182 INFO L225 Difference]: With dead ends: 9926 [2022-11-18 19:49:03,182 INFO L226 Difference]: Without dead ends: 9910 [2022-11-18 19:49:03,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 23 SyntacticMatches, 7 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2147 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1350, Invalid=4350, Unknown=0, NotChecked=0, Total=5700 [2022-11-18 19:49:03,183 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 227 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:03,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 13 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:49:03,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9910 states. [2022-11-18 19:49:03,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9910 to 8298. [2022-11-18 19:49:03,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8298 states, 8297 states have (on average 3.59021333011932) internal successors, (29788), 8297 states have internal predecessors, (29788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:03,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8298 states to 8298 states and 29788 transitions. [2022-11-18 19:49:03,380 INFO L78 Accepts]: Start accepts. Automaton has 8298 states and 29788 transitions. Word has length 22 [2022-11-18 19:49:03,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:03,380 INFO L495 AbstractCegarLoop]: Abstraction has 8298 states and 29788 transitions. [2022-11-18 19:49:03,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:03,380 INFO L276 IsEmpty]: Start isEmpty. Operand 8298 states and 29788 transitions. [2022-11-18 19:49:03,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 19:49:03,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:03,393 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:03,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (252)] Ended with exit code 0 [2022-11-18 19:49:03,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263,252 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:03,594 INFO L420 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:49:03,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:03,595 INFO L85 PathProgramCache]: Analyzing trace with hash -361182449, now seen corresponding path program 249 times [2022-11-18 19:49:03,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:03,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136051934] [2022-11-18 19:49:03,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:03,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:03,744 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:03,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:03,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136051934] [2022-11-18 19:49:03,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136051934] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:03,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206492643] [2022-11-18 19:49:03,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:49:03,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:03,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:03,746 INFO L229 MonitoredProcess]: Starting monitored process 253 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:03,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (253)] Waiting until timeout for monitored process [2022-11-18 19:49:04,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 19:49:04,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:49:04,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:49:04,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:04,259 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:04,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:04,366 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:04,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206492643] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:04,366 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:04,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 30 [2022-11-18 19:49:04,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651982150] [2022-11-18 19:49:04,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:04,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 19:49:04,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:04,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 19:49:04,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=678, Unknown=0, NotChecked=0, Total=870 [2022-11-18 19:49:04,367 INFO L87 Difference]: Start difference. First operand 8298 states and 29788 transitions. Second operand has 30 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:05,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:05,554 INFO L93 Difference]: Finished difference Result 9898 states and 34263 transitions. [2022-11-18 19:49:05,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-18 19:49:05,555 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 19:49:05,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:05,580 INFO L225 Difference]: With dead ends: 9898 [2022-11-18 19:49:05,580 INFO L226 Difference]: Without dead ends: 9878 [2022-11-18 19:49:05,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1946 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1297, Invalid=4253, Unknown=0, NotChecked=0, Total=5550 [2022-11-18 19:49:05,581 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 229 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:05,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 13 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:49:05,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9878 states. [2022-11-18 19:49:05,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9878 to 8374. [2022-11-18 19:49:05,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8374 states, 8373 states have (on average 3.591305386360922) internal successors, (30070), 8373 states have internal predecessors, (30070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:05,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8374 states to 8374 states and 30070 transitions. [2022-11-18 19:49:05,773 INFO L78 Accepts]: Start accepts. Automaton has 8374 states and 30070 transitions. Word has length 22 [2022-11-18 19:49:05,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:05,774 INFO L495 AbstractCegarLoop]: Abstraction has 8374 states and 30070 transitions. [2022-11-18 19:49:05,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:05,774 INFO L276 IsEmpty]: Start isEmpty. Operand 8374 states and 30070 transitions. [2022-11-18 19:49:05,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 19:49:05,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:05,791 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:05,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (253)] Forceful destruction successful, exit code 0 [2022-11-18 19:49:05,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 253 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable264 [2022-11-18 19:49:05,992 INFO L420 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:49:05,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:05,992 INFO L85 PathProgramCache]: Analyzing trace with hash 438532751, now seen corresponding path program 250 times [2022-11-18 19:49:05,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:05,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555545831] [2022-11-18 19:49:05,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:05,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:06,220 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:06,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:06,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555545831] [2022-11-18 19:49:06,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555545831] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:06,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814326493] [2022-11-18 19:49:06,221 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:49:06,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:06,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:06,222 INFO L229 MonitoredProcess]: Starting monitored process 254 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:06,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (254)] Waiting until timeout for monitored process [2022-11-18 19:49:06,564 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:49:06,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:49:06,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:49:06,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:06,654 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:06,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:06,734 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:06,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814326493] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:06,734 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:06,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2022-11-18 19:49:06,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221902191] [2022-11-18 19:49:06,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:06,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 19:49:06,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:06,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 19:49:06,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:49:06,735 INFO L87 Difference]: Start difference. First operand 8374 states and 30070 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:07,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:07,049 INFO L93 Difference]: Finished difference Result 10062 states and 35561 transitions. [2022-11-18 19:49:07,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:49:07,050 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 19:49:07,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:07,077 INFO L225 Difference]: With dead ends: 10062 [2022-11-18 19:49:07,078 INFO L226 Difference]: Without dead ends: 10062 [2022-11-18 19:49:07,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 27 SyntacticMatches, 10 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-11-18 19:49:07,078 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 86 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:07,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 30 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:49:07,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10062 states. [2022-11-18 19:49:07,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10062 to 8460. [2022-11-18 19:49:07,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8460 states, 8459 states have (on average 3.5908499822674074) internal successors, (30375), 8459 states have internal predecessors, (30375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:07,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8460 states to 8460 states and 30375 transitions. [2022-11-18 19:49:07,305 INFO L78 Accepts]: Start accepts. Automaton has 8460 states and 30375 transitions. Word has length 22 [2022-11-18 19:49:07,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:07,305 INFO L495 AbstractCegarLoop]: Abstraction has 8460 states and 30375 transitions. [2022-11-18 19:49:07,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:07,305 INFO L276 IsEmpty]: Start isEmpty. Operand 8460 states and 30375 transitions. [2022-11-18 19:49:07,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 19:49:07,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:07,318 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:07,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (254)] Ended with exit code 0 [2022-11-18 19:49:07,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 254 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable265 [2022-11-18 19:49:07,522 INFO L420 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:49:07,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:07,522 INFO L85 PathProgramCache]: Analyzing trace with hash 403475991, now seen corresponding path program 251 times [2022-11-18 19:49:07,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:07,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462329866] [2022-11-18 19:49:07,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:07,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:07,663 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:07,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:07,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462329866] [2022-11-18 19:49:07,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462329866] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:07,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617565777] [2022-11-18 19:49:07,664 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:49:07,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:07,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:07,665 INFO L229 MonitoredProcess]: Starting monitored process 255 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:07,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (255)] Waiting until timeout for monitored process [2022-11-18 19:49:08,010 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-18 19:49:08,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:49:08,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:49:08,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:08,126 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:08,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:08,205 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:08,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617565777] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:08,206 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:08,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 21 [2022-11-18 19:49:08,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704666031] [2022-11-18 19:49:08,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:08,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 19:49:08,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:08,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 19:49:08,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:49:08,207 INFO L87 Difference]: Start difference. First operand 8460 states and 30375 transitions. Second operand has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:09,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:09,242 INFO L93 Difference]: Finished difference Result 10970 states and 38378 transitions. [2022-11-18 19:49:09,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-18 19:49:09,242 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 19:49:09,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:09,272 INFO L225 Difference]: With dead ends: 10970 [2022-11-18 19:49:09,273 INFO L226 Difference]: Without dead ends: 10954 [2022-11-18 19:49:09,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 26 SyntacticMatches, 10 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=795, Invalid=1961, Unknown=0, NotChecked=0, Total=2756 [2022-11-18 19:49:09,273 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 337 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:09,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 13 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:49:09,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10954 states. [2022-11-18 19:49:09,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10954 to 9228. [2022-11-18 19:49:09,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9228 states, 9227 states have (on average 3.6101658177088978) internal successors, (33311), 9227 states have internal predecessors, (33311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:09,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9228 states to 9228 states and 33311 transitions. [2022-11-18 19:49:09,627 INFO L78 Accepts]: Start accepts. Automaton has 9228 states and 33311 transitions. Word has length 22 [2022-11-18 19:49:09,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:09,627 INFO L495 AbstractCegarLoop]: Abstraction has 9228 states and 33311 transitions. [2022-11-18 19:49:09,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:09,627 INFO L276 IsEmpty]: Start isEmpty. Operand 9228 states and 33311 transitions. [2022-11-18 19:49:09,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 19:49:09,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:09,643 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:09,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (255)] Ended with exit code 0 [2022-11-18 19:49:09,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 255 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable266 [2022-11-18 19:49:09,843 INFO L420 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:49:09,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:09,844 INFO L85 PathProgramCache]: Analyzing trace with hash -405870635, now seen corresponding path program 252 times [2022-11-18 19:49:09,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:09,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089817234] [2022-11-18 19:49:09,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:09,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:09,989 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:09,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:09,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089817234] [2022-11-18 19:49:09,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089817234] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:09,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814819741] [2022-11-18 19:49:09,989 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:49:09,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:09,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:09,991 INFO L229 MonitoredProcess]: Starting monitored process 256 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:10,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (256)] Waiting until timeout for monitored process [2022-11-18 19:49:10,359 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-18 19:49:10,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:49:10,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:49:10,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:10,466 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:10,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:10,547 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:10,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814819741] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:10,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:10,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 21 [2022-11-18 19:49:10,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030732740] [2022-11-18 19:49:10,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:10,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 19:49:10,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:10,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 19:49:10,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:49:10,548 INFO L87 Difference]: Start difference. First operand 9228 states and 33311 transitions. Second operand has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:11,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:11,771 INFO L93 Difference]: Finished difference Result 10038 states and 35561 transitions. [2022-11-18 19:49:11,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-18 19:49:11,771 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 19:49:11,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:11,802 INFO L225 Difference]: With dead ends: 10038 [2022-11-18 19:49:11,802 INFO L226 Difference]: Without dead ends: 10038 [2022-11-18 19:49:11,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 26 SyntacticMatches, 10 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 984 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1180, Invalid=2360, Unknown=0, NotChecked=0, Total=3540 [2022-11-18 19:49:11,803 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 162 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:11,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 24 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:49:11,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10038 states. [2022-11-18 19:49:12,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10038 to 9396. [2022-11-18 19:49:12,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9396 states, 9395 states have (on average 3.615859499733901) internal successors, (33971), 9395 states have internal predecessors, (33971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:12,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 33971 transitions. [2022-11-18 19:49:12,040 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 33971 transitions. Word has length 22 [2022-11-18 19:49:12,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:12,040 INFO L495 AbstractCegarLoop]: Abstraction has 9396 states and 33971 transitions. [2022-11-18 19:49:12,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:12,040 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 33971 transitions. [2022-11-18 19:49:12,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 19:49:12,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:12,058 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:12,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (256)] Forceful destruction successful, exit code 0 [2022-11-18 19:49:12,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 256 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable267 [2022-11-18 19:49:12,258 INFO L420 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:49:12,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:12,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1784671475, now seen corresponding path program 253 times [2022-11-18 19:49:12,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:12,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127870789] [2022-11-18 19:49:12,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:12,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:12,402 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:12,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:12,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127870789] [2022-11-18 19:49:12,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127870789] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:12,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815472021] [2022-11-18 19:49:12,403 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:49:12,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:12,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:12,406 INFO L229 MonitoredProcess]: Starting monitored process 257 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:12,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (257)] Waiting until timeout for monitored process [2022-11-18 19:49:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:12,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:49:12,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:12,863 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:12,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:12,951 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:12,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815472021] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:12,954 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:12,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 21 [2022-11-18 19:49:12,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600513286] [2022-11-18 19:49:12,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:12,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 19:49:12,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:12,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 19:49:12,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:49:12,956 INFO L87 Difference]: Start difference. First operand 9396 states and 33971 transitions. Second operand has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:14,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:14,262 INFO L93 Difference]: Finished difference Result 9716 states and 34610 transitions. [2022-11-18 19:49:14,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-18 19:49:14,262 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 19:49:14,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:14,286 INFO L225 Difference]: With dead ends: 9716 [2022-11-18 19:49:14,286 INFO L226 Difference]: Without dead ends: 9708 [2022-11-18 19:49:14,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 26 SyntacticMatches, 10 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1255 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1480, Invalid=3076, Unknown=0, NotChecked=0, Total=4556 [2022-11-18 19:49:14,287 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 128 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:14,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 32 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:49:14,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9708 states. [2022-11-18 19:49:14,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9708 to 9024. [2022-11-18 19:49:14,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9024 states, 9023 states have (on average 3.6020170674941814) internal successors, (32501), 9023 states have internal predecessors, (32501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:14,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9024 states to 9024 states and 32501 transitions. [2022-11-18 19:49:14,497 INFO L78 Accepts]: Start accepts. Automaton has 9024 states and 32501 transitions. Word has length 22 [2022-11-18 19:49:14,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:14,497 INFO L495 AbstractCegarLoop]: Abstraction has 9024 states and 32501 transitions. [2022-11-18 19:49:14,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:14,498 INFO L276 IsEmpty]: Start isEmpty. Operand 9024 states and 32501 transitions. [2022-11-18 19:49:14,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 19:49:14,514 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:14,515 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:14,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (257)] Forceful destruction successful, exit code 0 [2022-11-18 19:49:14,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268,257 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:14,715 INFO L420 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:49:14,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:14,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1845497653, now seen corresponding path program 254 times [2022-11-18 19:49:14,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:14,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161833768] [2022-11-18 19:49:14,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:14,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:14,852 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:14,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:14,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161833768] [2022-11-18 19:49:14,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161833768] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:14,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726903127] [2022-11-18 19:49:14,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:49:14,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:14,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:14,854 INFO L229 MonitoredProcess]: Starting monitored process 258 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:14,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (258)] Waiting until timeout for monitored process [2022-11-18 19:49:15,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:49:15,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:49:15,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:49:15,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:15,308 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:15,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:15,397 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:15,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726903127] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:15,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:15,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 21 [2022-11-18 19:49:15,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119300070] [2022-11-18 19:49:15,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:15,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 19:49:15,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:15,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 19:49:15,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:49:15,398 INFO L87 Difference]: Start difference. First operand 9024 states and 32501 transitions. Second operand has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:16,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:16,475 INFO L93 Difference]: Finished difference Result 10674 states and 37183 transitions. [2022-11-18 19:49:16,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-18 19:49:16,476 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 19:49:16,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:16,504 INFO L225 Difference]: With dead ends: 10674 [2022-11-18 19:49:16,504 INFO L226 Difference]: Without dead ends: 10670 [2022-11-18 19:49:16,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 26 SyntacticMatches, 10 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1284 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=914, Invalid=3118, Unknown=0, NotChecked=0, Total=4032 [2022-11-18 19:49:16,504 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 479 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:16,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 12 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:49:16,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10670 states. [2022-11-18 19:49:16,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10670 to 8712. [2022-11-18 19:49:16,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8712 states, 8711 states have (on average 3.581104350820801) internal successors, (31195), 8711 states have internal predecessors, (31195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:16,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8712 states to 8712 states and 31195 transitions. [2022-11-18 19:49:16,724 INFO L78 Accepts]: Start accepts. Automaton has 8712 states and 31195 transitions. Word has length 22 [2022-11-18 19:49:16,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:16,724 INFO L495 AbstractCegarLoop]: Abstraction has 8712 states and 31195 transitions. [2022-11-18 19:49:16,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:16,725 INFO L276 IsEmpty]: Start isEmpty. Operand 8712 states and 31195 transitions. [2022-11-18 19:49:16,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 19:49:16,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:16,739 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:16,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (258)] Ended with exit code 0 [2022-11-18 19:49:16,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269,258 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:16,940 INFO L420 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:49:16,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:16,940 INFO L85 PathProgramCache]: Analyzing trace with hash 595456761, now seen corresponding path program 255 times [2022-11-18 19:49:16,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:16,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426475128] [2022-11-18 19:49:16,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:16,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:17,078 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:17,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:17,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426475128] [2022-11-18 19:49:17,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426475128] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:17,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348556788] [2022-11-18 19:49:17,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:49:17,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:17,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:17,080 INFO L229 MonitoredProcess]: Starting monitored process 259 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:17,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (259)] Waiting until timeout for monitored process [2022-11-18 19:49:17,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 19:49:17,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:49:17,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:49:17,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:17,592 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:17,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:17,674 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:17,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348556788] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:17,675 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:17,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 21 [2022-11-18 19:49:17,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53736854] [2022-11-18 19:49:17,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:17,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 19:49:17,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:17,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 19:49:17,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:49:17,676 INFO L87 Difference]: Start difference. First operand 8712 states and 31195 transitions. Second operand has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:18,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:18,798 INFO L93 Difference]: Finished difference Result 10478 states and 36394 transitions. [2022-11-18 19:49:18,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-18 19:49:18,798 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 19:49:18,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:18,833 INFO L225 Difference]: With dead ends: 10478 [2022-11-18 19:49:18,833 INFO L226 Difference]: Without dead ends: 10472 [2022-11-18 19:49:18,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 26 SyntacticMatches, 10 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1174 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=800, Invalid=2860, Unknown=0, NotChecked=0, Total=3660 [2022-11-18 19:49:18,834 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 277 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:18,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 14 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:49:18,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10472 states. [2022-11-18 19:49:19,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10472 to 8808. [2022-11-18 19:49:19,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8808 states, 8807 states have (on average 3.5824912001816736) internal successors, (31551), 8807 states have internal predecessors, (31551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:19,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8808 states to 8808 states and 31551 transitions. [2022-11-18 19:49:19,122 INFO L78 Accepts]: Start accepts. Automaton has 8808 states and 31551 transitions. Word has length 22 [2022-11-18 19:49:19,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:19,122 INFO L495 AbstractCegarLoop]: Abstraction has 8808 states and 31551 transitions. [2022-11-18 19:49:19,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:19,123 INFO L276 IsEmpty]: Start isEmpty. Operand 8808 states and 31551 transitions. [2022-11-18 19:49:19,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 19:49:19,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:19,139 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:19,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (259)] Ended with exit code 0 [2022-11-18 19:49:19,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 259 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable270 [2022-11-18 19:49:19,339 INFO L420 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:49:19,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:19,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1044367733, now seen corresponding path program 256 times [2022-11-18 19:49:19,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:19,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033284152] [2022-11-18 19:49:19,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:19,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:19,482 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:19,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:19,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033284152] [2022-11-18 19:49:19,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033284152] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:19,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845097482] [2022-11-18 19:49:19,482 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:49:19,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:19,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:19,483 INFO L229 MonitoredProcess]: Starting monitored process 260 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:19,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (260)] Waiting until timeout for monitored process [2022-11-18 19:49:19,832 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:49:19,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:49:19,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:49:19,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:19,938 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:19,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:20,020 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:20,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845097482] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:20,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:20,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 21 [2022-11-18 19:49:20,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051767110] [2022-11-18 19:49:20,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:20,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 19:49:20,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:20,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 19:49:20,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:49:20,021 INFO L87 Difference]: Start difference. First operand 8808 states and 31551 transitions. Second operand has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:21,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:21,030 INFO L93 Difference]: Finished difference Result 10596 states and 36894 transitions. [2022-11-18 19:49:21,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-18 19:49:21,031 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 19:49:21,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:21,061 INFO L225 Difference]: With dead ends: 10596 [2022-11-18 19:49:21,061 INFO L226 Difference]: Without dead ends: 10588 [2022-11-18 19:49:21,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 26 SyntacticMatches, 10 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1056 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=711, Invalid=2595, Unknown=0, NotChecked=0, Total=3306 [2022-11-18 19:49:21,061 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 272 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:21,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 17 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:49:21,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10588 states. [2022-11-18 19:49:21,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10588 to 8856. [2022-11-18 19:49:21,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8856 states, 8855 states have (on average 3.582721626199887) internal successors, (31725), 8855 states have internal predecessors, (31725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:21,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8856 states to 8856 states and 31725 transitions. [2022-11-18 19:49:21,293 INFO L78 Accepts]: Start accepts. Automaton has 8856 states and 31725 transitions. Word has length 22 [2022-11-18 19:49:21,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:21,293 INFO L495 AbstractCegarLoop]: Abstraction has 8856 states and 31725 transitions. [2022-11-18 19:49:21,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:21,293 INFO L276 IsEmpty]: Start isEmpty. Operand 8856 states and 31725 transitions. [2022-11-18 19:49:21,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 19:49:21,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:21,309 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:21,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (260)] Ended with exit code 0 [2022-11-18 19:49:21,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271,260 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:21,510 INFO L420 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:49:21,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:21,510 INFO L85 PathProgramCache]: Analyzing trace with hash -339319495, now seen corresponding path program 257 times [2022-11-18 19:49:21,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:21,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042261319] [2022-11-18 19:49:21,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:21,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:21,651 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:21,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:21,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042261319] [2022-11-18 19:49:21,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042261319] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:21,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54809964] [2022-11-18 19:49:21,652 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:49:21,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:21,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:21,653 INFO L229 MonitoredProcess]: Starting monitored process 261 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:21,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (261)] Waiting until timeout for monitored process [2022-11-18 19:49:21,999 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-18 19:49:21,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:49:22,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:49:22,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:22,108 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:22,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:22,190 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:22,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54809964] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:22,190 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:22,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 21 [2022-11-18 19:49:22,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328227094] [2022-11-18 19:49:22,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:22,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 19:49:22,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:22,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 19:49:22,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:49:22,191 INFO L87 Difference]: Start difference. First operand 8856 states and 31725 transitions. Second operand has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:23,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:23,016 INFO L93 Difference]: Finished difference Result 10732 states and 37498 transitions. [2022-11-18 19:49:23,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-18 19:49:23,016 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 19:49:23,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:23,040 INFO L225 Difference]: With dead ends: 10732 [2022-11-18 19:49:23,040 INFO L226 Difference]: Without dead ends: 10722 [2022-11-18 19:49:23,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 26 SyntacticMatches, 10 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 798 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=532, Invalid=2018, Unknown=0, NotChecked=0, Total=2550 [2022-11-18 19:49:23,040 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 227 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:23,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 17 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:49:23,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10722 states. [2022-11-18 19:49:23,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10722 to 8880. [2022-11-18 19:49:23,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8880 states, 8879 states have (on average 3.5811465255096295) internal successors, (31797), 8879 states have internal predecessors, (31797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:23,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8880 states to 8880 states and 31797 transitions. [2022-11-18 19:49:23,251 INFO L78 Accepts]: Start accepts. Automaton has 8880 states and 31797 transitions. Word has length 22 [2022-11-18 19:49:23,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:23,251 INFO L495 AbstractCegarLoop]: Abstraction has 8880 states and 31797 transitions. [2022-11-18 19:49:23,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:23,251 INFO L276 IsEmpty]: Start isEmpty. Operand 8880 states and 31797 transitions. [2022-11-18 19:49:23,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 19:49:23,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:23,266 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:23,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (261)] Ended with exit code 0 [2022-11-18 19:49:23,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272,261 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:23,466 INFO L420 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:49:23,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:23,467 INFO L85 PathProgramCache]: Analyzing trace with hash 42339403, now seen corresponding path program 258 times [2022-11-18 19:49:23,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:23,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777705339] [2022-11-18 19:49:23,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:23,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:23,608 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:23,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:23,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777705339] [2022-11-18 19:49:23,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777705339] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:23,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566761313] [2022-11-18 19:49:23,609 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:49:23,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:23,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:23,609 INFO L229 MonitoredProcess]: Starting monitored process 262 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:23,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (262)] Waiting until timeout for monitored process [2022-11-18 19:49:23,964 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-18 19:49:23,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:49:23,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:49:23,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:24,078 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:24,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:24,173 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:24,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566761313] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:24,173 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:24,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 22 [2022-11-18 19:49:24,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991926462] [2022-11-18 19:49:24,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:24,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 19:49:24,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:24,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 19:49:24,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:49:24,174 INFO L87 Difference]: Start difference. First operand 8880 states and 31797 transitions. Second operand has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:24,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:24,834 INFO L93 Difference]: Finished difference Result 10280 states and 35922 transitions. [2022-11-18 19:49:24,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 19:49:24,834 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 19:49:24,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:24,862 INFO L225 Difference]: With dead ends: 10280 [2022-11-18 19:49:24,863 INFO L226 Difference]: Without dead ends: 10270 [2022-11-18 19:49:24,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 26 SyntacticMatches, 9 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 720 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=477, Invalid=1875, Unknown=0, NotChecked=0, Total=2352 [2022-11-18 19:49:24,863 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 239 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:24,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 19 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:49:24,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10270 states. [2022-11-18 19:49:25,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10270 to 8880. [2022-11-18 19:49:25,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8880 states, 8879 states have (on average 3.580245523144498) internal successors, (31789), 8879 states have internal predecessors, (31789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:25,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8880 states to 8880 states and 31789 transitions. [2022-11-18 19:49:25,091 INFO L78 Accepts]: Start accepts. Automaton has 8880 states and 31789 transitions. Word has length 22 [2022-11-18 19:49:25,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:25,091 INFO L495 AbstractCegarLoop]: Abstraction has 8880 states and 31789 transitions. [2022-11-18 19:49:25,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:25,092 INFO L276 IsEmpty]: Start isEmpty. Operand 8880 states and 31789 transitions. [2022-11-18 19:49:25,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 19:49:25,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:25,107 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:25,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (262)] Ended with exit code 0 [2022-11-18 19:49:25,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 262 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable273 [2022-11-18 19:49:25,307 INFO L420 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:49:25,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:25,307 INFO L85 PathProgramCache]: Analyzing trace with hash -389273873, now seen corresponding path program 259 times [2022-11-18 19:49:25,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:25,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860114427] [2022-11-18 19:49:25,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:25,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:25,446 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:25,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:25,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860114427] [2022-11-18 19:49:25,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860114427] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:25,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254767686] [2022-11-18 19:49:25,447 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:49:25,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:25,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:25,448 INFO L229 MonitoredProcess]: Starting monitored process 263 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:25,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (263)] Waiting until timeout for monitored process [2022-11-18 19:49:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:25,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:49:25,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:25,891 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:25,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:25,967 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:25,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254767686] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:25,967 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:25,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2022-11-18 19:49:25,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098961129] [2022-11-18 19:49:25,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:25,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 19:49:25,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:25,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 19:49:25,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:49:25,968 INFO L87 Difference]: Start difference. First operand 8880 states and 31789 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:26,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:26,310 INFO L93 Difference]: Finished difference Result 10048 states and 35496 transitions. [2022-11-18 19:49:26,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 19:49:26,311 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 19:49:26,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:26,340 INFO L225 Difference]: With dead ends: 10048 [2022-11-18 19:49:26,341 INFO L226 Difference]: Without dead ends: 10036 [2022-11-18 19:49:26,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 10 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=223, Invalid=707, Unknown=0, NotChecked=0, Total=930 [2022-11-18 19:49:26,341 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 108 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:26,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 27 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:49:26,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10036 states. [2022-11-18 19:49:26,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10036 to 8880. [2022-11-18 19:49:26,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8880 states, 8879 states have (on average 3.5800202725532153) internal successors, (31787), 8879 states have internal predecessors, (31787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:26,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8880 states to 8880 states and 31787 transitions. [2022-11-18 19:49:26,630 INFO L78 Accepts]: Start accepts. Automaton has 8880 states and 31787 transitions. Word has length 22 [2022-11-18 19:49:26,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:26,630 INFO L495 AbstractCegarLoop]: Abstraction has 8880 states and 31787 transitions. [2022-11-18 19:49:26,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:26,630 INFO L276 IsEmpty]: Start isEmpty. Operand 8880 states and 31787 transitions. [2022-11-18 19:49:26,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 19:49:26,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:26,647 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:26,652 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (263)] Ended with exit code 0 [2022-11-18 19:49:26,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274,263 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:26,847 INFO L420 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:49:26,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:26,848 INFO L85 PathProgramCache]: Analyzing trace with hash -812571825, now seen corresponding path program 260 times [2022-11-18 19:49:26,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:26,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955262857] [2022-11-18 19:49:26,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:26,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:26,990 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:26,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:26,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955262857] [2022-11-18 19:49:26,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955262857] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:26,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100107855] [2022-11-18 19:49:26,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:49:26,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:26,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:26,992 INFO L229 MonitoredProcess]: Starting monitored process 264 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:26,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (264)] Waiting until timeout for monitored process [2022-11-18 19:49:27,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:49:27,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:49:27,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:49:27,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:27,456 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:27,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:27,535 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:27,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100107855] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:27,535 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:27,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 21 [2022-11-18 19:49:27,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46587407] [2022-11-18 19:49:27,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:27,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 19:49:27,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:27,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 19:49:27,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:49:27,536 INFO L87 Difference]: Start difference. First operand 8880 states and 31787 transitions. Second operand has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:28,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:28,719 INFO L93 Difference]: Finished difference Result 9882 states and 34642 transitions. [2022-11-18 19:49:28,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-18 19:49:28,719 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 19:49:28,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:28,745 INFO L225 Difference]: With dead ends: 9882 [2022-11-18 19:49:28,745 INFO L226 Difference]: Without dead ends: 9876 [2022-11-18 19:49:28,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 26 SyntacticMatches, 10 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1065, Invalid=2241, Unknown=0, NotChecked=0, Total=3306 [2022-11-18 19:49:28,745 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 166 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:28,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 18 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:49:28,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9876 states. [2022-11-18 19:49:28,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9876 to 9122. [2022-11-18 19:49:28,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9122 states, 9121 states have (on average 3.5864488542922923) internal successors, (32712), 9121 states have internal predecessors, (32712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:28,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9122 states to 9122 states and 32712 transitions. [2022-11-18 19:49:28,979 INFO L78 Accepts]: Start accepts. Automaton has 9122 states and 32712 transitions. Word has length 22 [2022-11-18 19:49:28,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:28,980 INFO L495 AbstractCegarLoop]: Abstraction has 9122 states and 32712 transitions. [2022-11-18 19:49:28,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:28,980 INFO L276 IsEmpty]: Start isEmpty. Operand 9122 states and 32712 transitions. [2022-11-18 19:49:28,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 19:49:28,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:28,994 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:29,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (264)] Ended with exit code 0 [2022-11-18 19:49:29,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275,264 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:29,195 INFO L420 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:49:29,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:29,195 INFO L85 PathProgramCache]: Analyzing trace with hash 2103594631, now seen corresponding path program 261 times [2022-11-18 19:49:29,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:29,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902175395] [2022-11-18 19:49:29,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:29,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:29,340 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:49:29,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:29,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902175395] [2022-11-18 19:49:29,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902175395] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:29,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227534911] [2022-11-18 19:49:29,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:49:29,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:29,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:29,341 INFO L229 MonitoredProcess]: Starting monitored process 265 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:29,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (265)] Waiting until timeout for monitored process [2022-11-18 19:49:29,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-18 19:49:29,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:49:29,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:49:29,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:29,828 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:29,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:29,908 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:49:29,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227534911] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:29,908 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:29,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 21 [2022-11-18 19:49:29,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810860505] [2022-11-18 19:49:29,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:29,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 19:49:29,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:29,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 19:49:29,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:49:29,909 INFO L87 Difference]: Start difference. First operand 9122 states and 32712 transitions. Second operand has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:31,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:31,236 INFO L93 Difference]: Finished difference Result 9588 states and 33666 transitions. [2022-11-18 19:49:31,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-11-18 19:49:31,236 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 19:49:31,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:31,261 INFO L225 Difference]: With dead ends: 9588 [2022-11-18 19:49:31,261 INFO L226 Difference]: Without dead ends: 9576 [2022-11-18 19:49:31,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 26 SyntacticMatches, 10 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1347 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1401, Invalid=3291, Unknown=0, NotChecked=0, Total=4692 [2022-11-18 19:49:31,262 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 171 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:31,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 26 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:49:31,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9576 states. [2022-11-18 19:49:31,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9576 to 8794. [2022-11-18 19:49:31,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8794 states, 8793 states have (on average 3.574889116342545) internal successors, (31434), 8793 states have internal predecessors, (31434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:31,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8794 states to 8794 states and 31434 transitions. [2022-11-18 19:49:31,546 INFO L78 Accepts]: Start accepts. Automaton has 8794 states and 31434 transitions. Word has length 22 [2022-11-18 19:49:31,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:31,546 INFO L495 AbstractCegarLoop]: Abstraction has 8794 states and 31434 transitions. [2022-11-18 19:49:31,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:31,546 INFO L276 IsEmpty]: Start isEmpty. Operand 8794 states and 31434 transitions. [2022-11-18 19:49:31,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 19:49:31,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:31,563 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:31,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (265)] Ended with exit code 0 [2022-11-18 19:49:31,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276,265 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:31,764 INFO L420 AbstractCegarLoop]: === Iteration 278 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:49:31,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:31,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1984525745, now seen corresponding path program 262 times [2022-11-18 19:49:31,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:31,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812304542] [2022-11-18 19:49:31,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:31,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:31,909 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:31,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:31,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812304542] [2022-11-18 19:49:31,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812304542] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:31,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334341097] [2022-11-18 19:49:31,910 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:49:31,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:31,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:31,911 INFO L229 MonitoredProcess]: Starting monitored process 266 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:31,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (266)] Waiting until timeout for monitored process [2022-11-18 19:49:32,263 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:49:32,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:49:32,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:49:32,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:32,384 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:32,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:32,465 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:32,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334341097] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:32,466 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:32,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 22 [2022-11-18 19:49:32,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135856907] [2022-11-18 19:49:32,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:32,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 19:49:32,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:32,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 19:49:32,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:49:32,467 INFO L87 Difference]: Start difference. First operand 8794 states and 31434 transitions. Second operand has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:33,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:33,623 INFO L93 Difference]: Finished difference Result 9212 states and 32388 transitions. [2022-11-18 19:49:33,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-18 19:49:33,624 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 19:49:33,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:33,649 INFO L225 Difference]: With dead ends: 9212 [2022-11-18 19:49:33,649 INFO L226 Difference]: Without dead ends: 9196 [2022-11-18 19:49:33,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 25 SyntacticMatches, 10 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1451 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1416, Invalid=3414, Unknown=0, NotChecked=0, Total=4830 [2022-11-18 19:49:33,650 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 150 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:33,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 27 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:49:33,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9196 states. [2022-11-18 19:49:33,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9196 to 8830. [2022-11-18 19:49:33,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8830 states, 8829 states have (on average 3.5754898629516365) internal successors, (31568), 8829 states have internal predecessors, (31568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:33,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8830 states to 8830 states and 31568 transitions. [2022-11-18 19:49:33,877 INFO L78 Accepts]: Start accepts. Automaton has 8830 states and 31568 transitions. Word has length 22 [2022-11-18 19:49:33,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:33,877 INFO L495 AbstractCegarLoop]: Abstraction has 8830 states and 31568 transitions. [2022-11-18 19:49:33,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:33,877 INFO L276 IsEmpty]: Start isEmpty. Operand 8830 states and 31568 transitions. [2022-11-18 19:49:33,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 19:49:33,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:33,892 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:33,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (266)] Ended with exit code 0 [2022-11-18 19:49:34,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277,266 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:34,093 INFO L420 AbstractCegarLoop]: === Iteration 279 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:49:34,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:34,093 INFO L85 PathProgramCache]: Analyzing trace with hash -535406827, now seen corresponding path program 263 times [2022-11-18 19:49:34,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:34,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966119972] [2022-11-18 19:49:34,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:34,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:34,223 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:34,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:34,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966119972] [2022-11-18 19:49:34,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966119972] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:34,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539629553] [2022-11-18 19:49:34,224 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:49:34,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:34,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:34,225 INFO L229 MonitoredProcess]: Starting monitored process 267 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:34,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (267)] Waiting until timeout for monitored process [2022-11-18 19:49:34,579 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-18 19:49:34,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:49:34,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:49:34,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:34,702 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:34,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:34,782 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:34,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539629553] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:34,782 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:34,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 11] total 21 [2022-11-18 19:49:34,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055279266] [2022-11-18 19:49:34,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:34,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 19:49:34,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:34,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 19:49:34,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:49:34,783 INFO L87 Difference]: Start difference. First operand 8830 states and 31568 transitions. Second operand has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:35,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:35,856 INFO L93 Difference]: Finished difference Result 10040 states and 35084 transitions. [2022-11-18 19:49:35,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-18 19:49:35,856 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 19:49:35,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:35,881 INFO L225 Difference]: With dead ends: 10040 [2022-11-18 19:49:35,881 INFO L226 Difference]: Without dead ends: 10030 [2022-11-18 19:49:35,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 26 SyntacticMatches, 10 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 894 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=963, Invalid=2117, Unknown=0, NotChecked=0, Total=3080 [2022-11-18 19:49:35,882 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 199 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:35,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 13 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:49:35,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10030 states. [2022-11-18 19:49:36,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10030 to 9086. [2022-11-18 19:49:36,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9086 states, 9085 states have (on average 3.582168409466153) internal successors, (32544), 9085 states have internal predecessors, (32544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:36,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9086 states to 9086 states and 32544 transitions. [2022-11-18 19:49:36,155 INFO L78 Accepts]: Start accepts. Automaton has 9086 states and 32544 transitions. Word has length 22 [2022-11-18 19:49:36,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:36,155 INFO L495 AbstractCegarLoop]: Abstraction has 9086 states and 32544 transitions. [2022-11-18 19:49:36,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:36,155 INFO L276 IsEmpty]: Start isEmpty. Operand 9086 states and 32544 transitions. [2022-11-18 19:49:36,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 19:49:36,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:36,171 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:36,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (267)] Ended with exit code 0 [2022-11-18 19:49:36,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 267 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable278 [2022-11-18 19:49:36,372 INFO L420 AbstractCegarLoop]: === Iteration 280 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:49:36,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:36,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1914207667, now seen corresponding path program 264 times [2022-11-18 19:49:36,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:36,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926561836] [2022-11-18 19:49:36,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:36,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:36,501 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:49:36,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:36,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926561836] [2022-11-18 19:49:36,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926561836] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:36,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159424604] [2022-11-18 19:49:36,502 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:49:36,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:36,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:36,503 INFO L229 MonitoredProcess]: Starting monitored process 268 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:36,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (268)] Waiting until timeout for monitored process [2022-11-18 19:49:36,868 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-18 19:49:36,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:49:36,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:49:36,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:36,993 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:36,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:37,072 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:49:37,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159424604] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:37,072 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:37,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 11] total 21 [2022-11-18 19:49:37,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950168069] [2022-11-18 19:49:37,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:37,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 19:49:37,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:37,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 19:49:37,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:49:37,073 INFO L87 Difference]: Start difference. First operand 9086 states and 32544 transitions. Second operand has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:38,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:38,419 INFO L93 Difference]: Finished difference Result 9656 states and 33819 transitions. [2022-11-18 19:49:38,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-11-18 19:49:38,420 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 19:49:38,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:38,445 INFO L225 Difference]: With dead ends: 9656 [2022-11-18 19:49:38,445 INFO L226 Difference]: Without dead ends: 9644 [2022-11-18 19:49:38,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 26 SyntacticMatches, 10 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1577 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1427, Invalid=3685, Unknown=0, NotChecked=0, Total=5112 [2022-11-18 19:49:38,446 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 172 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:38,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 19 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:49:38,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9644 states. [2022-11-18 19:49:38,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9644 to 8964. [2022-11-18 19:49:38,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8964 states, 8963 states have (on average 3.577262077429432) internal successors, (32063), 8963 states have internal predecessors, (32063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:38,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 32063 transitions. [2022-11-18 19:49:38,672 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 32063 transitions. Word has length 22 [2022-11-18 19:49:38,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:38,673 INFO L495 AbstractCegarLoop]: Abstraction has 8964 states and 32063 transitions. [2022-11-18 19:49:38,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:38,673 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 32063 transitions. [2022-11-18 19:49:38,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 19:49:38,689 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:38,689 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:38,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (268)] Ended with exit code 0 [2022-11-18 19:49:38,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 268 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable279 [2022-11-18 19:49:38,891 INFO L420 AbstractCegarLoop]: === Iteration 281 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:49:38,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:38,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1707360747, now seen corresponding path program 265 times [2022-11-18 19:49:38,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:38,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447916856] [2022-11-18 19:49:38,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:38,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:39,032 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:49:39,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:39,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447916856] [2022-11-18 19:49:39,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447916856] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:39,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941385319] [2022-11-18 19:49:39,033 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:49:39,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:39,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:39,034 INFO L229 MonitoredProcess]: Starting monitored process 269 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:39,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (269)] Waiting until timeout for monitored process [2022-11-18 19:49:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:39,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:49:39,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:39,554 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:39,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:39,636 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:49:39,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941385319] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:39,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:39,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 22 [2022-11-18 19:49:39,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034089110] [2022-11-18 19:49:39,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:39,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 19:49:39,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:39,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 19:49:39,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:49:39,637 INFO L87 Difference]: Start difference. First operand 8964 states and 32063 transitions. Second operand has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:40,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:40,929 INFO L93 Difference]: Finished difference Result 9686 states and 33925 transitions. [2022-11-18 19:49:40,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-11-18 19:49:40,930 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 19:49:40,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:40,954 INFO L225 Difference]: With dead ends: 9686 [2022-11-18 19:49:40,954 INFO L226 Difference]: Without dead ends: 9670 [2022-11-18 19:49:40,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 25 SyntacticMatches, 10 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1578 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1335, Invalid=3635, Unknown=0, NotChecked=0, Total=4970 [2022-11-18 19:49:40,955 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 178 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:40,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 19 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:49:40,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9670 states. [2022-11-18 19:49:41,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9670 to 8944. [2022-11-18 19:49:41,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8944 states, 8943 states have (on average 3.5801185284580117) internal successors, (32017), 8943 states have internal predecessors, (32017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:41,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8944 states to 8944 states and 32017 transitions. [2022-11-18 19:49:41,236 INFO L78 Accepts]: Start accepts. Automaton has 8944 states and 32017 transitions. Word has length 22 [2022-11-18 19:49:41,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:41,236 INFO L495 AbstractCegarLoop]: Abstraction has 8944 states and 32017 transitions. [2022-11-18 19:49:41,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:41,236 INFO L276 IsEmpty]: Start isEmpty. Operand 8944 states and 32017 transitions. [2022-11-18 19:49:41,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 19:49:41,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:41,250 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:41,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (269)] Ended with exit code 0 [2022-11-18 19:49:41,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 269 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable280 [2022-11-18 19:49:41,451 INFO L420 AbstractCegarLoop]: === Iteration 282 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:49:41,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:41,451 INFO L85 PathProgramCache]: Analyzing trace with hash 409926477, now seen corresponding path program 266 times [2022-11-18 19:49:41,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:41,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922981848] [2022-11-18 19:49:41,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:41,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:41,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:41,596 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:41,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:41,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922981848] [2022-11-18 19:49:41,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922981848] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:41,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977299592] [2022-11-18 19:49:41,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:49:41,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:41,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:41,597 INFO L229 MonitoredProcess]: Starting monitored process 270 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:41,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (270)] Waiting until timeout for monitored process [2022-11-18 19:49:41,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:49:41,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:49:41,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:49:41,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:42,094 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:42,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:42,178 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:42,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977299592] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:42,178 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:42,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2022-11-18 19:49:42,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782856826] [2022-11-18 19:49:42,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:42,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 19:49:42,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:42,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 19:49:42,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2022-11-18 19:49:42,179 INFO L87 Difference]: Start difference. First operand 8944 states and 32017 transitions. Second operand has 23 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:43,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:43,357 INFO L93 Difference]: Finished difference Result 9488 states and 33376 transitions. [2022-11-18 19:49:43,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-11-18 19:49:43,358 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 19:49:43,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:43,381 INFO L225 Difference]: With dead ends: 9488 [2022-11-18 19:49:43,381 INFO L226 Difference]: Without dead ends: 9464 [2022-11-18 19:49:43,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 24 SyntacticMatches, 10 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1602 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1323, Invalid=3647, Unknown=0, NotChecked=0, Total=4970 [2022-11-18 19:49:43,382 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 131 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:43,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 29 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:49:43,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9464 states. [2022-11-18 19:49:43,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9464 to 8984. [2022-11-18 19:49:43,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8984 states, 8983 states have (on average 3.581097628854503) internal successors, (32169), 8983 states have internal predecessors, (32169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:43,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8984 states to 8984 states and 32169 transitions. [2022-11-18 19:49:43,604 INFO L78 Accepts]: Start accepts. Automaton has 8984 states and 32169 transitions. Word has length 22 [2022-11-18 19:49:43,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:43,605 INFO L495 AbstractCegarLoop]: Abstraction has 8984 states and 32169 transitions. [2022-11-18 19:49:43,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:43,605 INFO L276 IsEmpty]: Start isEmpty. Operand 8984 states and 32169 transitions. [2022-11-18 19:49:43,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 19:49:43,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:43,621 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:43,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (270)] Forceful destruction successful, exit code 0 [2022-11-18 19:49:43,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281,270 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:43,822 INFO L420 AbstractCegarLoop]: === Iteration 283 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:49:43,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:43,822 INFO L85 PathProgramCache]: Analyzing trace with hash -533226481, now seen corresponding path program 267 times [2022-11-18 19:49:43,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:43,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802981203] [2022-11-18 19:49:43,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:43,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:43,964 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:43,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:43,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802981203] [2022-11-18 19:49:43,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802981203] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:43,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977835062] [2022-11-18 19:49:43,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:49:43,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:43,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:43,965 INFO L229 MonitoredProcess]: Starting monitored process 271 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:43,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (271)] Waiting until timeout for monitored process [2022-11-18 19:49:44,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 19:49:44,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:49:44,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:49:44,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:44,488 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:44,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:44,565 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:44,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977835062] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:44,566 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:44,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 10] total 21 [2022-11-18 19:49:44,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150969808] [2022-11-18 19:49:44,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:44,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 19:49:44,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:44,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 19:49:44,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:49:44,566 INFO L87 Difference]: Start difference. First operand 8984 states and 32169 transitions. Second operand has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:45,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:45,727 INFO L93 Difference]: Finished difference Result 10630 states and 37148 transitions. [2022-11-18 19:49:45,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-18 19:49:45,727 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 19:49:45,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:45,753 INFO L225 Difference]: With dead ends: 10630 [2022-11-18 19:49:45,753 INFO L226 Difference]: Without dead ends: 10622 [2022-11-18 19:49:45,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 26 SyntacticMatches, 10 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1204 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1045, Invalid=2377, Unknown=0, NotChecked=0, Total=3422 [2022-11-18 19:49:45,754 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 209 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:45,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 10 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:49:45,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10622 states. [2022-11-18 19:49:46,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10622 to 9524. [2022-11-18 19:49:46,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9524 states, 9523 states have (on average 3.588049984248661) internal successors, (34169), 9523 states have internal predecessors, (34169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:46,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9524 states to 9524 states and 34169 transitions. [2022-11-18 19:49:46,083 INFO L78 Accepts]: Start accepts. Automaton has 9524 states and 34169 transitions. Word has length 22 [2022-11-18 19:49:46,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:46,083 INFO L495 AbstractCegarLoop]: Abstraction has 9524 states and 34169 transitions. [2022-11-18 19:49:46,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:46,083 INFO L276 IsEmpty]: Start isEmpty. Operand 9524 states and 34169 transitions. [2022-11-18 19:49:46,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 19:49:46,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:46,107 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:46,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (271)] Ended with exit code 0 [2022-11-18 19:49:46,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 271 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable282 [2022-11-18 19:49:46,307 INFO L420 AbstractCegarLoop]: === Iteration 284 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:49:46,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:46,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1912027321, now seen corresponding path program 268 times [2022-11-18 19:49:46,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:46,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409484740] [2022-11-18 19:49:46,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:46,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:46,465 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:49:46,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:46,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409484740] [2022-11-18 19:49:46,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409484740] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:46,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280530458] [2022-11-18 19:49:46,466 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:49:46,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:46,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:46,467 INFO L229 MonitoredProcess]: Starting monitored process 272 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:46,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (272)] Waiting until timeout for monitored process [2022-11-18 19:49:46,838 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:49:46,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:49:46,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:49:46,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:46,978 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:46,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:47,058 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:49:47,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280530458] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:47,058 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:47,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 10] total 21 [2022-11-18 19:49:47,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496898468] [2022-11-18 19:49:47,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:47,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 19:49:47,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:47,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 19:49:47,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:49:47,060 INFO L87 Difference]: Start difference. First operand 9524 states and 34169 transitions. Second operand has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:48,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:48,693 INFO L93 Difference]: Finished difference Result 10324 states and 36157 transitions. [2022-11-18 19:49:48,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-11-18 19:49:48,694 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 19:49:48,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:48,721 INFO L225 Difference]: With dead ends: 10324 [2022-11-18 19:49:48,721 INFO L226 Difference]: Without dead ends: 10308 [2022-11-18 19:49:48,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 26 SyntacticMatches, 10 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2437 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1698, Invalid=4782, Unknown=0, NotChecked=0, Total=6480 [2022-11-18 19:49:48,722 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 217 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:48,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 13 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:49:48,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10308 states. [2022-11-18 19:49:49,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10308 to 9242. [2022-11-18 19:49:49,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9242 states, 9241 states have (on average 3.582296288280489) internal successors, (33104), 9241 states have internal predecessors, (33104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:49,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9242 states to 9242 states and 33104 transitions. [2022-11-18 19:49:49,079 INFO L78 Accepts]: Start accepts. Automaton has 9242 states and 33104 transitions. Word has length 22 [2022-11-18 19:49:49,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:49,080 INFO L495 AbstractCegarLoop]: Abstraction has 9242 states and 33104 transitions. [2022-11-18 19:49:49,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:49,080 INFO L276 IsEmpty]: Start isEmpty. Operand 9242 states and 33104 transitions. [2022-11-18 19:49:49,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 19:49:49,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:49,102 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:49,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (272)] Forceful destruction successful, exit code 0 [2022-11-18 19:49:49,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283,272 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:49,309 INFO L420 AbstractCegarLoop]: === Iteration 285 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:49:49,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:49,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1705180401, now seen corresponding path program 269 times [2022-11-18 19:49:49,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:49,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943375825] [2022-11-18 19:49:49,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:49,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:49,444 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:49:49,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:49,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943375825] [2022-11-18 19:49:49,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943375825] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:49,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259172431] [2022-11-18 19:49:49,444 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:49:49,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:49,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:49,445 INFO L229 MonitoredProcess]: Starting monitored process 273 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:49,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (273)] Waiting until timeout for monitored process [2022-11-18 19:49:49,838 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-18 19:49:49,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:49:49,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:49:49,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:49,974 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:49,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:50,054 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:49:50,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259172431] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:50,054 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:50,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 11] total 22 [2022-11-18 19:49:50,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097701254] [2022-11-18 19:49:50,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:50,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 19:49:50,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:50,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 19:49:50,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:49:50,055 INFO L87 Difference]: Start difference. First operand 9242 states and 33104 transitions. Second operand has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:51,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:51,471 INFO L93 Difference]: Finished difference Result 10336 states and 36216 transitions. [2022-11-18 19:49:51,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-11-18 19:49:51,472 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 19:49:51,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:51,498 INFO L225 Difference]: With dead ends: 10336 [2022-11-18 19:49:51,499 INFO L226 Difference]: Without dead ends: 10320 [2022-11-18 19:49:51,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 25 SyntacticMatches, 10 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2155 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1474, Invalid=4378, Unknown=0, NotChecked=0, Total=5852 [2022-11-18 19:49:51,499 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 220 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:51,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 13 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:49:51,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10320 states. [2022-11-18 19:49:51,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10320 to 9314. [2022-11-18 19:49:51,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9314 states, 9313 states have (on average 3.588532159347149) internal successors, (33420), 9313 states have internal predecessors, (33420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:51,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9314 states to 9314 states and 33420 transitions. [2022-11-18 19:49:51,765 INFO L78 Accepts]: Start accepts. Automaton has 9314 states and 33420 transitions. Word has length 22 [2022-11-18 19:49:51,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:51,766 INFO L495 AbstractCegarLoop]: Abstraction has 9314 states and 33420 transitions. [2022-11-18 19:49:51,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:51,766 INFO L276 IsEmpty]: Start isEmpty. Operand 9314 states and 33420 transitions. [2022-11-18 19:49:51,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 19:49:51,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:51,783 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:51,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (273)] Ended with exit code 0 [2022-11-18 19:49:51,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284,273 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:51,984 INFO L420 AbstractCegarLoop]: === Iteration 286 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:49:51,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:51,984 INFO L85 PathProgramCache]: Analyzing trace with hash 412106823, now seen corresponding path program 270 times [2022-11-18 19:49:51,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:51,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680822573] [2022-11-18 19:49:51,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:51,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:51,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:52,177 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:49:52,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:52,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680822573] [2022-11-18 19:49:52,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680822573] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:52,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004317689] [2022-11-18 19:49:52,177 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:49:52,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:52,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:52,179 INFO L229 MonitoredProcess]: Starting monitored process 274 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:52,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (274)] Waiting until timeout for monitored process [2022-11-18 19:49:52,570 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-18 19:49:52,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:49:52,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:49:52,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:52,711 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:52,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:52,815 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:49:52,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004317689] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:52,815 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:52,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 23 [2022-11-18 19:49:52,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609596034] [2022-11-18 19:49:52,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:52,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 19:49:52,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:52,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 19:49:52,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2022-11-18 19:49:52,817 INFO L87 Difference]: Start difference. First operand 9314 states and 33420 transitions. Second operand has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:54,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:54,118 INFO L93 Difference]: Finished difference Result 10442 states and 36640 transitions. [2022-11-18 19:49:54,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-18 19:49:54,119 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 19:49:54,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:54,146 INFO L225 Difference]: With dead ends: 10442 [2022-11-18 19:49:54,146 INFO L226 Difference]: Without dead ends: 10418 [2022-11-18 19:49:54,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 24 SyntacticMatches, 10 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1969 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1330, Invalid=4072, Unknown=0, NotChecked=0, Total=5402 [2022-11-18 19:49:54,147 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 210 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:54,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 19 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:49:54,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10418 states. [2022-11-18 19:49:54,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10418 to 9422. [2022-11-18 19:49:54,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9422 states, 9421 states have (on average 3.5946290202738562) internal successors, (33865), 9421 states have internal predecessors, (33865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:54,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9422 states to 9422 states and 33865 transitions. [2022-11-18 19:49:54,378 INFO L78 Accepts]: Start accepts. Automaton has 9422 states and 33865 transitions. Word has length 22 [2022-11-18 19:49:54,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:54,379 INFO L495 AbstractCegarLoop]: Abstraction has 9422 states and 33865 transitions. [2022-11-18 19:49:54,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:54,379 INFO L276 IsEmpty]: Start isEmpty. Operand 9422 states and 33865 transitions. [2022-11-18 19:49:54,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 19:49:54,394 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:54,395 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:54,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (274)] Ended with exit code 0 [2022-11-18 19:49:54,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285,274 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:54,595 INFO L420 AbstractCegarLoop]: === Iteration 287 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:49:54,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:54,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1623501327, now seen corresponding path program 271 times [2022-11-18 19:49:54,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:54,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105447138] [2022-11-18 19:49:54,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:54,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:54,779 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:54,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:54,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105447138] [2022-11-18 19:49:54,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105447138] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:54,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945139342] [2022-11-18 19:49:54,780 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:49:54,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:54,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:54,782 INFO L229 MonitoredProcess]: Starting monitored process 275 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:54,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (275)] Waiting until timeout for monitored process [2022-11-18 19:49:55,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:55,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:49:55,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:55,336 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:55,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:55,426 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:55,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945139342] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:55,427 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:55,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2022-11-18 19:49:55,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563039995] [2022-11-18 19:49:55,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:55,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 19:49:55,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:55,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 19:49:55,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2022-11-18 19:49:55,428 INFO L87 Difference]: Start difference. First operand 9422 states and 33865 transitions. Second operand has 24 states, 24 states have (on average 1.5) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:56,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:56,698 INFO L93 Difference]: Finished difference Result 10202 states and 35993 transitions. [2022-11-18 19:49:56,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-11-18 19:49:56,698 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.5) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 19:49:56,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:56,723 INFO L225 Difference]: With dead ends: 10202 [2022-11-18 19:49:56,723 INFO L226 Difference]: Without dead ends: 10170 [2022-11-18 19:49:56,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 23 SyntacticMatches, 10 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1841 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1264, Invalid=3848, Unknown=0, NotChecked=0, Total=5112 [2022-11-18 19:49:56,724 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 178 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:56,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 19 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:49:56,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10170 states. [2022-11-18 19:49:56,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10170 to 9472. [2022-11-18 19:49:56,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9472 states, 9471 states have (on average 3.596135571745328) internal successors, (34059), 9471 states have internal predecessors, (34059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:56,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9472 states to 9472 states and 34059 transitions. [2022-11-18 19:49:56,950 INFO L78 Accepts]: Start accepts. Automaton has 9472 states and 34059 transitions. Word has length 22 [2022-11-18 19:49:56,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:56,950 INFO L495 AbstractCegarLoop]: Abstraction has 9472 states and 34059 transitions. [2022-11-18 19:49:56,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.5) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:56,951 INFO L276 IsEmpty]: Start isEmpty. Operand 9472 states and 34059 transitions. [2022-11-18 19:49:56,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 19:49:56,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:56,970 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:56,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (275)] Ended with exit code 0 [2022-11-18 19:49:57,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286,275 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:57,170 INFO L420 AbstractCegarLoop]: === Iteration 288 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:49:57,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:57,170 INFO L85 PathProgramCache]: Analyzing trace with hash -465635755, now seen corresponding path program 272 times [2022-11-18 19:49:57,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:57,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033030942] [2022-11-18 19:49:57,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:57,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:57,317 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:57,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:57,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033030942] [2022-11-18 19:49:57,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033030942] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:57,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720090734] [2022-11-18 19:49:57,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:49:57,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:57,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:57,319 INFO L229 MonitoredProcess]: Starting monitored process 276 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:57,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (276)] Waiting until timeout for monitored process [2022-11-18 19:49:57,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:49:57,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:49:57,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:49:57,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:57,833 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:57,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:57,907 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:57,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720090734] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:57,907 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:57,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 9] total 25 [2022-11-18 19:49:57,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754229935] [2022-11-18 19:49:57,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:57,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 19:49:57,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:57,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 19:49:57,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2022-11-18 19:49:57,908 INFO L87 Difference]: Start difference. First operand 9472 states and 34059 transitions. Second operand has 25 states, 25 states have (on average 1.6) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:59,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:59,072 INFO L93 Difference]: Finished difference Result 12134 states and 42629 transitions. [2022-11-18 19:49:59,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-18 19:49:59,072 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.6) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 19:49:59,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:59,119 INFO L225 Difference]: With dead ends: 12134 [2022-11-18 19:49:59,119 INFO L226 Difference]: Without dead ends: 12134 [2022-11-18 19:49:59,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 22 SyntacticMatches, 10 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1312 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1028, Invalid=2278, Unknown=0, NotChecked=0, Total=3306 [2022-11-18 19:49:59,120 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 233 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:59,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 7 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:49:59,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12134 states. [2022-11-18 19:49:59,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12134 to 10652. [2022-11-18 19:49:59,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10652 states, 10651 states have (on average 3.613651300347385) internal successors, (38489), 10651 states have internal predecessors, (38489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:59,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10652 states to 10652 states and 38489 transitions. [2022-11-18 19:49:59,434 INFO L78 Accepts]: Start accepts. Automaton has 10652 states and 38489 transitions. Word has length 22 [2022-11-18 19:49:59,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:59,434 INFO L495 AbstractCegarLoop]: Abstraction has 10652 states and 38489 transitions. [2022-11-18 19:49:59,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.6) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:59,434 INFO L276 IsEmpty]: Start isEmpty. Operand 10652 states and 38489 transitions. [2022-11-18 19:49:59,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 19:49:59,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:59,454 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:59,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (276)] Ended with exit code 0 [2022-11-18 19:49:59,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 276 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable287 [2022-11-18 19:49:59,654 INFO L420 AbstractCegarLoop]: === Iteration 289 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:49:59,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:59,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1844436595, now seen corresponding path program 273 times [2022-11-18 19:49:59,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:59,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868233428] [2022-11-18 19:49:59,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:59,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:59,804 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:59,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:59,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868233428] [2022-11-18 19:49:59,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868233428] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:59,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751707698] [2022-11-18 19:49:59,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:49:59,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:59,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:59,806 INFO L229 MonitoredProcess]: Starting monitored process 277 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:59,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (277)] Waiting until timeout for monitored process [2022-11-18 19:50:00,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 19:50:00,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:50:00,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:50:00,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:00,323 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:00,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:00,396 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:50:00,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751707698] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:00,396 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:50:00,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 9] total 25 [2022-11-18 19:50:00,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348544905] [2022-11-18 19:50:00,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:00,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 19:50:00,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:00,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 19:50:00,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2022-11-18 19:50:00,397 INFO L87 Difference]: Start difference. First operand 10652 states and 38489 transitions. Second operand has 25 states, 25 states have (on average 1.6) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:02,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:02,102 INFO L93 Difference]: Finished difference Result 11636 states and 40916 transitions. [2022-11-18 19:50:02,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-11-18 19:50:02,102 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.6) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 19:50:02,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:02,134 INFO L225 Difference]: With dead ends: 11636 [2022-11-18 19:50:02,134 INFO L226 Difference]: Without dead ends: 11628 [2022-11-18 19:50:02,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 22 SyntacticMatches, 10 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3117 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2017, Invalid=5639, Unknown=0, NotChecked=0, Total=7656 [2022-11-18 19:50:02,135 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 231 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:02,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 13 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:50:02,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11628 states. [2022-11-18 19:50:02,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11628 to 10620. [2022-11-18 19:50:02,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10620 states, 10619 states have (on average 3.611168659949148) internal successors, (38347), 10619 states have internal predecessors, (38347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:02,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10620 states to 10620 states and 38347 transitions. [2022-11-18 19:50:02,406 INFO L78 Accepts]: Start accepts. Automaton has 10620 states and 38347 transitions. Word has length 22 [2022-11-18 19:50:02,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:02,406 INFO L495 AbstractCegarLoop]: Abstraction has 10620 states and 38347 transitions. [2022-11-18 19:50:02,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.6) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:02,406 INFO L276 IsEmpty]: Start isEmpty. Operand 10620 states and 38347 transitions. [2022-11-18 19:50:02,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 19:50:02,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:02,425 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:02,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (277)] Ended with exit code 0 [2022-11-18 19:50:02,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 277 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable288 [2022-11-18 19:50:02,626 INFO L420 AbstractCegarLoop]: === Iteration 290 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:50:02,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:02,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1637589675, now seen corresponding path program 274 times [2022-11-18 19:50:02,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:02,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297063957] [2022-11-18 19:50:02,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:02,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:02,817 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:02,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:02,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297063957] [2022-11-18 19:50:02,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297063957] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:50:02,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822021823] [2022-11-18 19:50:02,818 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:50:02,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:02,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:02,819 INFO L229 MonitoredProcess]: Starting monitored process 278 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:02,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (278)] Waiting until timeout for monitored process [2022-11-18 19:50:03,197 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:50:03,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:50:03,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:50:03,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:03,354 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:03,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:03,449 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:50:03,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822021823] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:03,449 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:50:03,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 10] total 26 [2022-11-18 19:50:03,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822731508] [2022-11-18 19:50:03,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:03,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 19:50:03,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:03,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 19:50:03,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2022-11-18 19:50:03,450 INFO L87 Difference]: Start difference. First operand 10620 states and 38347 transitions. Second operand has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:05,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:05,076 INFO L93 Difference]: Finished difference Result 11752 states and 41400 transitions. [2022-11-18 19:50:05,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-11-18 19:50:05,076 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 19:50:05,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:05,195 INFO L225 Difference]: With dead ends: 11752 [2022-11-18 19:50:05,195 INFO L226 Difference]: Without dead ends: 11736 [2022-11-18 19:50:05,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 22 SyntacticMatches, 9 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2717 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1727, Invalid=5079, Unknown=0, NotChecked=0, Total=6806 [2022-11-18 19:50:05,195 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 216 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:05,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 12 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:50:05,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11736 states. [2022-11-18 19:50:05,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11736 to 10776. [2022-11-18 19:50:05,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10776 states, 10775 states have (on average 3.6164269141531324) internal successors, (38967), 10775 states have internal predecessors, (38967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:05,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10776 states to 10776 states and 38967 transitions. [2022-11-18 19:50:05,463 INFO L78 Accepts]: Start accepts. Automaton has 10776 states and 38967 transitions. Word has length 22 [2022-11-18 19:50:05,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:05,463 INFO L495 AbstractCegarLoop]: Abstraction has 10776 states and 38967 transitions. [2022-11-18 19:50:05,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:05,463 INFO L276 IsEmpty]: Start isEmpty. Operand 10776 states and 38967 transitions. [2022-11-18 19:50:05,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 19:50:05,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:05,482 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:05,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (278)] Ended with exit code 0 [2022-11-18 19:50:05,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 278 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable289 [2022-11-18 19:50:05,683 INFO L420 AbstractCegarLoop]: === Iteration 291 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:50:05,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:05,683 INFO L85 PathProgramCache]: Analyzing trace with hash 479697549, now seen corresponding path program 275 times [2022-11-18 19:50:05,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:05,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982566254] [2022-11-18 19:50:05,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:05,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:05,830 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:05,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:05,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982566254] [2022-11-18 19:50:05,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982566254] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:50:05,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753186787] [2022-11-18 19:50:05,830 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:50:05,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:05,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:05,831 INFO L229 MonitoredProcess]: Starting monitored process 279 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:05,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (279)] Waiting until timeout for monitored process [2022-11-18 19:50:06,194 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-18 19:50:06,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:50:06,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:50:06,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:06,340 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:06,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:06,425 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:50:06,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753186787] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:06,426 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:50:06,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 27 [2022-11-18 19:50:06,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823434241] [2022-11-18 19:50:06,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:06,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 19:50:06,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:06,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 19:50:06,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2022-11-18 19:50:06,427 INFO L87 Difference]: Start difference. First operand 10776 states and 38967 transitions. Second operand has 27 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:07,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:07,927 INFO L93 Difference]: Finished difference Result 11936 states and 42073 transitions. [2022-11-18 19:50:07,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-11-18 19:50:07,927 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 19:50:07,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:07,956 INFO L225 Difference]: With dead ends: 11936 [2022-11-18 19:50:07,957 INFO L226 Difference]: Without dead ends: 11912 [2022-11-18 19:50:07,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 22 SyntacticMatches, 8 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2388 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1503, Invalid=4659, Unknown=0, NotChecked=0, Total=6162 [2022-11-18 19:50:07,957 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 217 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:07,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 16 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:50:07,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11912 states. [2022-11-18 19:50:08,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11912 to 10934. [2022-11-18 19:50:08,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10934 states, 10933 states have (on average 3.619500594530321) internal successors, (39572), 10933 states have internal predecessors, (39572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:08,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10934 states to 10934 states and 39572 transitions. [2022-11-18 19:50:08,212 INFO L78 Accepts]: Start accepts. Automaton has 10934 states and 39572 transitions. Word has length 22 [2022-11-18 19:50:08,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:08,212 INFO L495 AbstractCegarLoop]: Abstraction has 10934 states and 39572 transitions. [2022-11-18 19:50:08,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:08,212 INFO L276 IsEmpty]: Start isEmpty. Operand 10934 states and 39572 transitions. [2022-11-18 19:50:08,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 19:50:08,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:08,231 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:08,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (279)] Ended with exit code 0 [2022-11-18 19:50:08,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290,279 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:08,432 INFO L420 AbstractCegarLoop]: === Iteration 292 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:50:08,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:08,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1691092053, now seen corresponding path program 276 times [2022-11-18 19:50:08,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:08,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337685423] [2022-11-18 19:50:08,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:08,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:08,590 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:08,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:08,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337685423] [2022-11-18 19:50:08,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337685423] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:50:08,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610707032] [2022-11-18 19:50:08,590 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:50:08,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:08,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:08,591 INFO L229 MonitoredProcess]: Starting monitored process 280 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:08,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (280)] Waiting until timeout for monitored process [2022-11-18 19:50:08,973 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-18 19:50:08,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:50:08,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:50:08,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:09,132 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:09,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:09,228 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:50:09,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610707032] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:09,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:50:09,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 28 [2022-11-18 19:50:09,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515245296] [2022-11-18 19:50:09,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:09,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 19:50:09,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:09,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 19:50:09,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=582, Unknown=0, NotChecked=0, Total=756 [2022-11-18 19:50:09,229 INFO L87 Difference]: Start difference. First operand 10934 states and 39572 transitions. Second operand has 28 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:10,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:10,530 INFO L93 Difference]: Finished difference Result 12094 states and 42637 transitions. [2022-11-18 19:50:10,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-11-18 19:50:10,530 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 19:50:10,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:10,561 INFO L225 Difference]: With dead ends: 12094 [2022-11-18 19:50:10,561 INFO L226 Difference]: Without dead ends: 12062 [2022-11-18 19:50:10,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 22 SyntacticMatches, 7 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2136 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1350, Invalid=4350, Unknown=0, NotChecked=0, Total=5700 [2022-11-18 19:50:10,562 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 237 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:10,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 13 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:50:10,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12062 states. [2022-11-18 19:50:10,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12062 to 11072. [2022-11-18 19:50:10,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11072 states, 11071 states have (on average 3.6210821064041188) internal successors, (40089), 11071 states have internal predecessors, (40089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:10,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11072 states to 11072 states and 40089 transitions. [2022-11-18 19:50:10,885 INFO L78 Accepts]: Start accepts. Automaton has 11072 states and 40089 transitions. Word has length 22 [2022-11-18 19:50:10,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:10,885 INFO L495 AbstractCegarLoop]: Abstraction has 11072 states and 40089 transitions. [2022-11-18 19:50:10,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:10,885 INFO L276 IsEmpty]: Start isEmpty. Operand 11072 states and 40089 transitions. [2022-11-18 19:50:10,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 19:50:10,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:10,904 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:10,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (280)] Ended with exit code 0 [2022-11-18 19:50:11,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 280 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable291 [2022-11-18 19:50:11,105 INFO L420 AbstractCegarLoop]: === Iteration 293 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:50:11,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:11,105 INFO L85 PathProgramCache]: Analyzing trace with hash 589616013, now seen corresponding path program 277 times [2022-11-18 19:50:11,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:11,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732543313] [2022-11-18 19:50:11,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:11,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:11,255 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:11,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:11,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732543313] [2022-11-18 19:50:11,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732543313] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:50:11,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256836599] [2022-11-18 19:50:11,256 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:50:11,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:11,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:11,257 INFO L229 MonitoredProcess]: Starting monitored process 281 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:11,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (281)] Waiting until timeout for monitored process [2022-11-18 19:50:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:11,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:50:11,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:11,815 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:11,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:11,930 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:11,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256836599] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:11,930 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:50:11,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 30 [2022-11-18 19:50:11,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597039725] [2022-11-18 19:50:11,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:11,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 19:50:11,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:11,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 19:50:11,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=678, Unknown=0, NotChecked=0, Total=870 [2022-11-18 19:50:11,931 INFO L87 Difference]: Start difference. First operand 11072 states and 40089 transitions. Second operand has 30 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:13,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:13,289 INFO L93 Difference]: Finished difference Result 12008 states and 42604 transitions. [2022-11-18 19:50:13,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-18 19:50:13,289 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 19:50:13,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:13,325 INFO L225 Difference]: With dead ends: 12008 [2022-11-18 19:50:13,325 INFO L226 Difference]: Without dead ends: 11968 [2022-11-18 19:50:13,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1947 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1297, Invalid=4253, Unknown=0, NotChecked=0, Total=5550 [2022-11-18 19:50:13,326 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 194 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:13,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 20 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:50:13,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11968 states. [2022-11-18 19:50:13,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11968 to 11150. [2022-11-18 19:50:13,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11150 states, 11149 states have (on average 3.62140102251323) internal successors, (40375), 11149 states have internal predecessors, (40375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:13,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11150 states to 11150 states and 40375 transitions. [2022-11-18 19:50:13,622 INFO L78 Accepts]: Start accepts. Automaton has 11150 states and 40375 transitions. Word has length 22 [2022-11-18 19:50:13,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:13,622 INFO L495 AbstractCegarLoop]: Abstraction has 11150 states and 40375 transitions. [2022-11-18 19:50:13,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:13,623 INFO L276 IsEmpty]: Start isEmpty. Operand 11150 states and 40375 transitions. [2022-11-18 19:50:13,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:50:13,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:13,642 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:13,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (281)] Ended with exit code 0 [2022-11-18 19:50:13,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 281 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable292 [2022-11-18 19:50:13,843 INFO L420 AbstractCegarLoop]: === Iteration 294 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:50:13,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:13,843 INFO L85 PathProgramCache]: Analyzing trace with hash -2021104114, now seen corresponding path program 278 times [2022-11-18 19:50:13,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:13,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699415664] [2022-11-18 19:50:13,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:13,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:14,999 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:15,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:15,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699415664] [2022-11-18 19:50:15,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699415664] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:50:15,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106810047] [2022-11-18 19:50:15,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:50:15,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:15,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:15,001 INFO L229 MonitoredProcess]: Starting monitored process 282 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:15,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (282)] Waiting until timeout for monitored process [2022-11-18 19:50:15,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:50:15,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:50:15,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:50:15,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:15,723 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:15,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:16,160 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:16,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106810047] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:16,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:50:16,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-11-18 19:50:16,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602833621] [2022-11-18 19:50:16,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:16,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 19:50:16,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:16,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 19:50:16,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2022-11-18 19:50:16,162 INFO L87 Difference]: Start difference. First operand 11150 states and 40375 transitions. Second operand has 27 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:17,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:17,841 INFO L93 Difference]: Finished difference Result 11650 states and 41540 transitions. [2022-11-18 19:50:17,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 19:50:17,842 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:50:17,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:17,871 INFO L225 Difference]: With dead ends: 11650 [2022-11-18 19:50:17,871 INFO L226 Difference]: Without dead ends: 11620 [2022-11-18 19:50:17,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=117, Invalid=1073, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 19:50:17,872 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 135 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 2191 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 2202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:17,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 138 Invalid, 2202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2191 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 19:50:17,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11620 states. [2022-11-18 19:50:18,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11620 to 11324. [2022-11-18 19:50:18,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11324 states, 11323 states have (on average 3.5963967146515943) internal successors, (40722), 11323 states have internal predecessors, (40722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:18,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11324 states to 11324 states and 40722 transitions. [2022-11-18 19:50:18,139 INFO L78 Accepts]: Start accepts. Automaton has 11324 states and 40722 transitions. Word has length 23 [2022-11-18 19:50:18,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:18,139 INFO L495 AbstractCegarLoop]: Abstraction has 11324 states and 40722 transitions. [2022-11-18 19:50:18,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:18,139 INFO L276 IsEmpty]: Start isEmpty. Operand 11324 states and 40722 transitions. [2022-11-18 19:50:18,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:50:18,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:18,157 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:18,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (282)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:18,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293,282 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:18,358 INFO L420 AbstractCegarLoop]: === Iteration 295 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:50:18,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:18,358 INFO L85 PathProgramCache]: Analyzing trace with hash -886515176, now seen corresponding path program 279 times [2022-11-18 19:50:18,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:18,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631350397] [2022-11-18 19:50:18,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:18,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:18,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:19,455 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:19,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:19,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631350397] [2022-11-18 19:50:19,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631350397] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:50:19,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103707244] [2022-11-18 19:50:19,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:50:19,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:19,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:19,456 INFO L229 MonitoredProcess]: Starting monitored process 283 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:19,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (283)] Waiting until timeout for monitored process [2022-11-18 19:50:19,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 19:50:19,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:50:19,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:50:19,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:20,211 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:20,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:20,773 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:20,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103707244] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:20,773 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:50:20,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 35 [2022-11-18 19:50:20,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011968321] [2022-11-18 19:50:20,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:20,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 19:50:20,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:20,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 19:50:20,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1214, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 19:50:20,774 INFO L87 Difference]: Start difference. First operand 11324 states and 40722 transitions. Second operand has 37 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:22,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:22,116 INFO L93 Difference]: Finished difference Result 12005 states and 42666 transitions. [2022-11-18 19:50:22,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:50:22,117 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:50:22,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:22,148 INFO L225 Difference]: With dead ends: 12005 [2022-11-18 19:50:22,148 INFO L226 Difference]: Without dead ends: 12000 [2022-11-18 19:50:22,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=142, Invalid=1418, Unknown=0, NotChecked=0, Total=1560 [2022-11-18 19:50:22,148 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 195 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 2059 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 2075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:22,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 129 Invalid, 2075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2059 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 19:50:22,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12000 states. [2022-11-18 19:50:22,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12000 to 11694. [2022-11-18 19:50:22,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11694 states, 11693 states have (on average 3.6029248268194647) internal successors, (42129), 11693 states have internal predecessors, (42129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:22,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11694 states to 11694 states and 42129 transitions. [2022-11-18 19:50:22,509 INFO L78 Accepts]: Start accepts. Automaton has 11694 states and 42129 transitions. Word has length 23 [2022-11-18 19:50:22,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:22,509 INFO L495 AbstractCegarLoop]: Abstraction has 11694 states and 42129 transitions. [2022-11-18 19:50:22,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:22,510 INFO L276 IsEmpty]: Start isEmpty. Operand 11694 states and 42129 transitions. [2022-11-18 19:50:22,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:50:22,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:22,531 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:22,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (283)] Ended with exit code 0 [2022-11-18 19:50:22,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294,283 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:22,732 INFO L420 AbstractCegarLoop]: === Iteration 296 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:50:22,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:22,732 INFO L85 PathProgramCache]: Analyzing trace with hash -27640646, now seen corresponding path program 280 times [2022-11-18 19:50:22,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:22,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546029532] [2022-11-18 19:50:22,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:22,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:23,813 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:23,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:23,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546029532] [2022-11-18 19:50:23,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546029532] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:50:23,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223255020] [2022-11-18 19:50:23,813 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:50:23,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:23,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:23,815 INFO L229 MonitoredProcess]: Starting monitored process 284 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:23,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (284)] Waiting until timeout for monitored process [2022-11-18 19:50:24,196 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:50:24,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:50:24,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:50:24,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:24,571 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:24,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:25,095 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:25,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223255020] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:25,095 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:50:25,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 34 [2022-11-18 19:50:25,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158709551] [2022-11-18 19:50:25,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:25,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 19:50:25,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:25,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 19:50:25,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1147, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 19:50:25,096 INFO L87 Difference]: Start difference. First operand 11694 states and 42129 transitions. Second operand has 36 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:26,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:26,575 INFO L93 Difference]: Finished difference Result 11994 states and 42649 transitions. [2022-11-18 19:50:26,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:50:26,575 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:50:26,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:26,611 INFO L225 Difference]: With dead ends: 11994 [2022-11-18 19:50:26,611 INFO L226 Difference]: Without dead ends: 11982 [2022-11-18 19:50:26,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=146, Invalid=1414, Unknown=0, NotChecked=0, Total=1560 [2022-11-18 19:50:26,611 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 198 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 2050 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 2066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:26,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 130 Invalid, 2066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2050 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 19:50:26,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11982 states. [2022-11-18 19:50:26,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11982 to 11388. [2022-11-18 19:50:26,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11388 states, 11387 states have (on average 3.6069201721261086) internal successors, (41072), 11387 states have internal predecessors, (41072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:26,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11388 states to 11388 states and 41072 transitions. [2022-11-18 19:50:26,910 INFO L78 Accepts]: Start accepts. Automaton has 11388 states and 41072 transitions. Word has length 23 [2022-11-18 19:50:26,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:26,910 INFO L495 AbstractCegarLoop]: Abstraction has 11388 states and 41072 transitions. [2022-11-18 19:50:26,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:26,910 INFO L276 IsEmpty]: Start isEmpty. Operand 11388 states and 41072 transitions. [2022-11-18 19:50:26,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:50:26,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:26,932 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:26,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (284)] Ended with exit code 0 [2022-11-18 19:50:27,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295,284 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:27,132 INFO L420 AbstractCegarLoop]: === Iteration 297 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:50:27,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:27,133 INFO L85 PathProgramCache]: Analyzing trace with hash 2029651280, now seen corresponding path program 281 times [2022-11-18 19:50:27,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:27,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798799976] [2022-11-18 19:50:27,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:27,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:28,219 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:28,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:28,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798799976] [2022-11-18 19:50:28,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798799976] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:50:28,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817924529] [2022-11-18 19:50:28,219 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:50:28,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:28,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:28,220 INFO L229 MonitoredProcess]: Starting monitored process 285 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:28,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (285)] Waiting until timeout for monitored process [2022-11-18 19:50:28,657 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-18 19:50:28,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:50:28,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:50:28,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:29,039 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:29,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:29,592 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:29,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817924529] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:29,593 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:50:29,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 33 [2022-11-18 19:50:29,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932342370] [2022-11-18 19:50:29,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:29,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 19:50:29,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:29,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 19:50:29,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1082, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 19:50:29,594 INFO L87 Difference]: Start difference. First operand 11388 states and 41072 transitions. Second operand has 35 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 34 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:31,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:31,192 INFO L93 Difference]: Finished difference Result 11703 states and 41623 transitions. [2022-11-18 19:50:31,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:50:31,192 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 34 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:50:31,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:31,239 INFO L225 Difference]: With dead ends: 11703 [2022-11-18 19:50:31,239 INFO L226 Difference]: Without dead ends: 11698 [2022-11-18 19:50:31,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=134, Invalid=1348, Unknown=0, NotChecked=0, Total=1482 [2022-11-18 19:50:31,240 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 168 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2365 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 2378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:31,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 143 Invalid, 2378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2365 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 19:50:31,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11698 states. [2022-11-18 19:50:31,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11698 to 11388. [2022-11-18 19:50:31,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11388 states, 11387 states have (on average 3.6069201721261086) internal successors, (41072), 11387 states have internal predecessors, (41072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:31,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11388 states to 11388 states and 41072 transitions. [2022-11-18 19:50:31,541 INFO L78 Accepts]: Start accepts. Automaton has 11388 states and 41072 transitions. Word has length 23 [2022-11-18 19:50:31,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:31,541 INFO L495 AbstractCegarLoop]: Abstraction has 11388 states and 41072 transitions. [2022-11-18 19:50:31,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 34 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:31,542 INFO L276 IsEmpty]: Start isEmpty. Operand 11388 states and 41072 transitions. [2022-11-18 19:50:31,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:50:31,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:31,563 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:31,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (285)] Ended with exit code 0 [2022-11-18 19:50:31,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296,285 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:31,763 INFO L420 AbstractCegarLoop]: === Iteration 298 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:50:31,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:31,764 INFO L85 PathProgramCache]: Analyzing trace with hash -2058469096, now seen corresponding path program 282 times [2022-11-18 19:50:31,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:31,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104122351] [2022-11-18 19:50:31,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:31,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:32,866 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:32,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:32,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104122351] [2022-11-18 19:50:32,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104122351] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:50:32,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294188346] [2022-11-18 19:50:32,867 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:50:32,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:32,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:32,868 INFO L229 MonitoredProcess]: Starting monitored process 286 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:32,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (286)] Waiting until timeout for monitored process [2022-11-18 19:50:33,268 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-18 19:50:33,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:50:33,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:50:33,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:33,632 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:33,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:34,141 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:34,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294188346] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:34,142 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:50:34,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2022-11-18 19:50:34,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525931341] [2022-11-18 19:50:34,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:34,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-18 19:50:34,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:34,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-18 19:50:34,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 19:50:34,143 INFO L87 Difference]: Start difference. First operand 11388 states and 41072 transitions. Second operand has 33 states, 32 states have (on average 1.6875) internal successors, (54), 32 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:35,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:35,700 INFO L93 Difference]: Finished difference Result 11721 states and 41652 transitions. [2022-11-18 19:50:35,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:50:35,700 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.6875) internal successors, (54), 32 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:50:35,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:35,731 INFO L225 Difference]: With dead ends: 11721 [2022-11-18 19:50:35,732 INFO L226 Difference]: Without dead ends: 11716 [2022-11-18 19:50:35,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=130, Invalid=1276, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 19:50:35,732 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 161 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2248 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 2259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:35,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 132 Invalid, 2259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2248 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 19:50:35,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11716 states. [2022-11-18 19:50:35,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11716 to 11388. [2022-11-18 19:50:35,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11388 states, 11387 states have (on average 3.6069201721261086) internal successors, (41072), 11387 states have internal predecessors, (41072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:35,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11388 states to 11388 states and 41072 transitions. [2022-11-18 19:50:35,991 INFO L78 Accepts]: Start accepts. Automaton has 11388 states and 41072 transitions. Word has length 23 [2022-11-18 19:50:35,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:35,991 INFO L495 AbstractCegarLoop]: Abstraction has 11388 states and 41072 transitions. [2022-11-18 19:50:35,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.6875) internal successors, (54), 32 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:35,991 INFO L276 IsEmpty]: Start isEmpty. Operand 11388 states and 41072 transitions. [2022-11-18 19:50:36,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:50:36,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:36,010 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:36,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (286)] Ended with exit code 0 [2022-11-18 19:50:36,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297,286 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:36,211 INFO L420 AbstractCegarLoop]: === Iteration 299 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:50:36,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:36,211 INFO L85 PathProgramCache]: Analyzing trace with hash 58818128, now seen corresponding path program 283 times [2022-11-18 19:50:36,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:36,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212157174] [2022-11-18 19:50:36,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:36,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:37,314 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:37,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:37,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212157174] [2022-11-18 19:50:37,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212157174] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:50:37,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828897738] [2022-11-18 19:50:37,314 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:50:37,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:37,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:37,315 INFO L229 MonitoredProcess]: Starting monitored process 287 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:37,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (287)] Waiting until timeout for monitored process [2022-11-18 19:50:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:37,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:50:37,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:38,045 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:38,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:38,513 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:38,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828897738] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:38,513 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:50:38,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2022-11-18 19:50:38,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108458911] [2022-11-18 19:50:38,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:38,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 19:50:38,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:38,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 19:50:38,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=842, Unknown=0, NotChecked=0, Total=930 [2022-11-18 19:50:38,514 INFO L87 Difference]: Start difference. First operand 11388 states and 41072 transitions. Second operand has 31 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 30 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:40,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:40,021 INFO L93 Difference]: Finished difference Result 11747 states and 41699 transitions. [2022-11-18 19:50:40,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 19:50:40,021 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 30 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:50:40,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:40,056 INFO L225 Difference]: With dead ends: 11747 [2022-11-18 19:50:40,056 INFO L226 Difference]: Without dead ends: 11742 [2022-11-18 19:50:40,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=126, Invalid=1206, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 19:50:40,056 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 193 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 2054 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 2069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:40,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 115 Invalid, 2069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2054 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 19:50:40,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11742 states. [2022-11-18 19:50:40,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11742 to 11388. [2022-11-18 19:50:40,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11388 states, 11387 states have (on average 3.6069201721261086) internal successors, (41072), 11387 states have internal predecessors, (41072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:40,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11388 states to 11388 states and 41072 transitions. [2022-11-18 19:50:40,349 INFO L78 Accepts]: Start accepts. Automaton has 11388 states and 41072 transitions. Word has length 23 [2022-11-18 19:50:40,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:40,349 INFO L495 AbstractCegarLoop]: Abstraction has 11388 states and 41072 transitions. [2022-11-18 19:50:40,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 30 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:40,350 INFO L276 IsEmpty]: Start isEmpty. Operand 11388 states and 41072 transitions. [2022-11-18 19:50:40,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:50:40,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:40,371 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:40,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (287)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:40,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298,287 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:40,572 INFO L420 AbstractCegarLoop]: === Iteration 300 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:50:40,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:40,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1270212632, now seen corresponding path program 284 times [2022-11-18 19:50:40,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:40,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604037206] [2022-11-18 19:50:40,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:40,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:41,825 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:41,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:41,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604037206] [2022-11-18 19:50:41,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604037206] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:50:41,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479319644] [2022-11-18 19:50:41,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:50:41,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:41,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:41,826 INFO L229 MonitoredProcess]: Starting monitored process 288 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:41,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (288)] Waiting until timeout for monitored process [2022-11-18 19:50:42,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:50:42,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:50:42,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:50:42,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:42,507 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:42,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:42,935 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:42,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479319644] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:42,935 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:50:42,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-11-18 19:50:42,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148694229] [2022-11-18 19:50:42,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:42,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 19:50:42,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:42,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 19:50:42,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-11-18 19:50:42,936 INFO L87 Difference]: Start difference. First operand 11388 states and 41072 transitions. Second operand has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 26 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:44,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:44,487 INFO L93 Difference]: Finished difference Result 11637 states and 41498 transitions. [2022-11-18 19:50:44,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 19:50:44,487 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 26 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:50:44,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:44,521 INFO L225 Difference]: With dead ends: 11637 [2022-11-18 19:50:44,522 INFO L226 Difference]: Without dead ends: 11632 [2022-11-18 19:50:44,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:50:44,522 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 133 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 2079 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 2090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:44,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 122 Invalid, 2090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2079 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 19:50:44,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11632 states. [2022-11-18 19:50:44,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11632 to 11388. [2022-11-18 19:50:44,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11388 states, 11387 states have (on average 3.6069201721261086) internal successors, (41072), 11387 states have internal predecessors, (41072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:44,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11388 states to 11388 states and 41072 transitions. [2022-11-18 19:50:44,853 INFO L78 Accepts]: Start accepts. Automaton has 11388 states and 41072 transitions. Word has length 23 [2022-11-18 19:50:44,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:44,854 INFO L495 AbstractCegarLoop]: Abstraction has 11388 states and 41072 transitions. [2022-11-18 19:50:44,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 26 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:44,854 INFO L276 IsEmpty]: Start isEmpty. Operand 11388 states and 41072 transitions. [2022-11-18 19:50:44,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:50:44,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:44,874 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:44,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (288)] Ended with exit code 0 [2022-11-18 19:50:45,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299,288 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:45,074 INFO L420 AbstractCegarLoop]: === Iteration 301 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:50:45,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:45,075 INFO L85 PathProgramCache]: Analyzing trace with hash 415747022, now seen corresponding path program 285 times [2022-11-18 19:50:45,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:45,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628252443] [2022-11-18 19:50:45,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:45,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:46,101 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:46,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:46,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628252443] [2022-11-18 19:50:46,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628252443] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:50:46,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996298445] [2022-11-18 19:50:46,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:50:46,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:46,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:46,102 INFO L229 MonitoredProcess]: Starting monitored process 289 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:46,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (289)] Waiting until timeout for monitored process [2022-11-18 19:50:46,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 19:50:46,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:50:46,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:50:46,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:46,852 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:46,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:47,454 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:47,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996298445] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:47,454 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:50:47,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 13] total 30 [2022-11-18 19:50:47,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132237303] [2022-11-18 19:50:47,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:47,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 19:50:47,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:47,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 19:50:47,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=899, Unknown=0, NotChecked=0, Total=992 [2022-11-18 19:50:47,456 INFO L87 Difference]: Start difference. First operand 11388 states and 41072 transitions. Second operand has 32 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 31 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:48,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:48,436 INFO L93 Difference]: Finished difference Result 11781 states and 42116 transitions. [2022-11-18 19:50:48,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:50:48,436 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 31 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:50:48,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:48,476 INFO L225 Difference]: With dead ends: 11781 [2022-11-18 19:50:48,477 INFO L226 Difference]: Without dead ends: 11776 [2022-11-18 19:50:48,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 20 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=106, Invalid=1016, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:50:48,477 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 193 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:48,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 112 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:50:48,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11776 states. [2022-11-18 19:50:48,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11776 to 11482. [2022-11-18 19:50:48,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11482 states, 11481 states have (on average 3.611096594373312) internal successors, (41459), 11481 states have internal predecessors, (41459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:48,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11482 states to 11482 states and 41459 transitions. [2022-11-18 19:50:48,864 INFO L78 Accepts]: Start accepts. Automaton has 11482 states and 41459 transitions. Word has length 23 [2022-11-18 19:50:48,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:48,864 INFO L495 AbstractCegarLoop]: Abstraction has 11482 states and 41459 transitions. [2022-11-18 19:50:48,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 31 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:48,864 INFO L276 IsEmpty]: Start isEmpty. Operand 11482 states and 41459 transitions. [2022-11-18 19:50:48,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:50:48,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:48,884 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:48,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (289)] Ended with exit code 0 [2022-11-18 19:50:49,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 289 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable300 [2022-11-18 19:50:49,085 INFO L420 AbstractCegarLoop]: === Iteration 302 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:50:49,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:49,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1274621552, now seen corresponding path program 286 times [2022-11-18 19:50:49,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:49,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825791395] [2022-11-18 19:50:49,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:49,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:49,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:50,215 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:50,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:50,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825791395] [2022-11-18 19:50:50,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825791395] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:50:50,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342702282] [2022-11-18 19:50:50,216 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:50:50,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:50,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:50,217 INFO L229 MonitoredProcess]: Starting monitored process 290 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:50,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (290)] Waiting until timeout for monitored process [2022-11-18 19:50:50,602 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:50:50,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:50:50,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:50:50,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:51,008 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:51,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:51,653 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:51,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342702282] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:51,654 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:50:51,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 13] total 32 [2022-11-18 19:50:51,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464841752] [2022-11-18 19:50:51,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:51,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 19:50:51,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:51,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 19:50:51,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1022, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:50:51,655 INFO L87 Difference]: Start difference. First operand 11482 states and 41459 transitions. Second operand has 34 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 33 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:53,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:53,310 INFO L93 Difference]: Finished difference Result 12085 states and 43039 transitions. [2022-11-18 19:50:53,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:50:53,311 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 33 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:50:53,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:53,351 INFO L225 Difference]: With dead ends: 12085 [2022-11-18 19:50:53,351 INFO L226 Difference]: Without dead ends: 12078 [2022-11-18 19:50:53,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 19 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=174, Invalid=1718, Unknown=0, NotChecked=0, Total=1892 [2022-11-18 19:50:53,351 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 231 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 1845 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:53,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 139 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1845 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 19:50:53,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12078 states. [2022-11-18 19:50:53,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12078 to 11482. [2022-11-18 19:50:53,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11482 states, 11481 states have (on average 3.6102255901053915) internal successors, (41449), 11481 states have internal predecessors, (41449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:53,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11482 states to 11482 states and 41449 transitions. [2022-11-18 19:50:53,661 INFO L78 Accepts]: Start accepts. Automaton has 11482 states and 41449 transitions. Word has length 23 [2022-11-18 19:50:53,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:53,662 INFO L495 AbstractCegarLoop]: Abstraction has 11482 states and 41449 transitions. [2022-11-18 19:50:53,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 33 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:53,662 INFO L276 IsEmpty]: Start isEmpty. Operand 11482 states and 41449 transitions. [2022-11-18 19:50:53,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:50:53,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:53,684 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:53,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (290)] Ended with exit code 0 [2022-11-18 19:50:53,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301,290 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:53,885 INFO L420 AbstractCegarLoop]: === Iteration 303 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:50:53,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:53,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1833226622, now seen corresponding path program 287 times [2022-11-18 19:50:53,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:53,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714525200] [2022-11-18 19:50:53,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:53,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:54,922 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:54,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:54,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714525200] [2022-11-18 19:50:54,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714525200] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:50:54,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045801164] [2022-11-18 19:50:54,922 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:50:54,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:54,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:54,923 INFO L229 MonitoredProcess]: Starting monitored process 291 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:54,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (291)] Waiting until timeout for monitored process [2022-11-18 19:50:55,315 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-18 19:50:55,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:50:55,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:50:55,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:55,690 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:55,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:56,284 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:56,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045801164] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:56,284 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:50:56,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 13] total 29 [2022-11-18 19:50:56,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789220564] [2022-11-18 19:50:56,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:56,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 19:50:56,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:56,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 19:50:56,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=842, Unknown=0, NotChecked=0, Total=930 [2022-11-18 19:50:56,285 INFO L87 Difference]: Start difference. First operand 11482 states and 41449 transitions. Second operand has 31 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 30 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:57,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:57,330 INFO L93 Difference]: Finished difference Result 11695 states and 41870 transitions. [2022-11-18 19:50:57,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:50:57,331 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 30 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:50:57,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:57,362 INFO L225 Difference]: With dead ends: 11695 [2022-11-18 19:50:57,362 INFO L226 Difference]: Without dead ends: 11690 [2022-11-18 19:50:57,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=106, Invalid=1016, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:50:57,362 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 154 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 1486 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:57,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 128 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1486 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:50:57,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11690 states. [2022-11-18 19:50:57,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11690 to 11482. [2022-11-18 19:50:57,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11482 states, 11481 states have (on average 3.6102255901053915) internal successors, (41449), 11481 states have internal predecessors, (41449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:57,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11482 states to 11482 states and 41449 transitions. [2022-11-18 19:50:57,650 INFO L78 Accepts]: Start accepts. Automaton has 11482 states and 41449 transitions. Word has length 23 [2022-11-18 19:50:57,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:57,650 INFO L495 AbstractCegarLoop]: Abstraction has 11482 states and 41449 transitions. [2022-11-18 19:50:57,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 30 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:57,651 INFO L276 IsEmpty]: Start isEmpty. Operand 11482 states and 41449 transitions. [2022-11-18 19:50:57,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:50:57,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:57,671 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:57,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (291)] Ended with exit code 0 [2022-11-18 19:50:57,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302,291 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:57,872 INFO L420 AbstractCegarLoop]: === Iteration 304 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:50:57,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:57,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1714849880, now seen corresponding path program 288 times [2022-11-18 19:50:57,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:57,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289234763] [2022-11-18 19:50:57,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:57,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:58,941 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:58,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:58,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289234763] [2022-11-18 19:50:58,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289234763] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:50:58,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150191445] [2022-11-18 19:50:58,941 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:50:58,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:58,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:58,946 INFO L229 MonitoredProcess]: Starting monitored process 292 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:58,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (292)] Waiting until timeout for monitored process [2022-11-18 19:50:59,371 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-18 19:50:59,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:50:59,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:50:59,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:59,705 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:50:59,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:00,311 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:00,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150191445] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:00,311 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:51:00,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 13] total 31 [2022-11-18 19:51:00,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899686608] [2022-11-18 19:51:00,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:00,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-18 19:51:00,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:00,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-18 19:51:00,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=955, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 19:51:00,312 INFO L87 Difference]: Start difference. First operand 11482 states and 41449 transitions. Second operand has 33 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:01,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:01,155 INFO L93 Difference]: Finished difference Result 11851 states and 42460 transitions. [2022-11-18 19:51:01,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:51:01,155 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:51:01,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:01,188 INFO L225 Difference]: With dead ends: 11851 [2022-11-18 19:51:01,188 INFO L226 Difference]: Without dead ends: 11842 [2022-11-18 19:51:01,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=128, Invalid=1062, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 19:51:01,189 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 133 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:01,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 103 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:51:01,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11842 states. [2022-11-18 19:51:01,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11842 to 11634. [2022-11-18 19:51:01,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11634 states, 11633 states have (on average 3.6117080718645234) internal successors, (42015), 11633 states have internal predecessors, (42015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:01,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11634 states to 11634 states and 42015 transitions. [2022-11-18 19:51:01,483 INFO L78 Accepts]: Start accepts. Automaton has 11634 states and 42015 transitions. Word has length 23 [2022-11-18 19:51:01,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:01,484 INFO L495 AbstractCegarLoop]: Abstraction has 11634 states and 42015 transitions. [2022-11-18 19:51:01,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:01,484 INFO L276 IsEmpty]: Start isEmpty. Operand 11634 states and 42015 transitions. [2022-11-18 19:51:01,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:51:01,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:01,506 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:01,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (292)] Ended with exit code 0 [2022-11-18 19:51:01,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 292 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable303 [2022-11-18 19:51:01,707 INFO L420 AbstractCegarLoop]: === Iteration 305 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:51:01,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:01,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1721242886, now seen corresponding path program 289 times [2022-11-18 19:51:01,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:01,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033649807] [2022-11-18 19:51:01,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:01,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:02,844 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:02,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:02,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033649807] [2022-11-18 19:51:02,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033649807] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:51:02,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736934583] [2022-11-18 19:51:02,845 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:51:02,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:02,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:02,846 INFO L229 MonitoredProcess]: Starting monitored process 293 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:02,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (293)] Waiting until timeout for monitored process [2022-11-18 19:51:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:03,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:51:03,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:03,565 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:51:03,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:04,102 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:04,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736934583] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:04,102 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:51:04,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 13] total 30 [2022-11-18 19:51:04,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912631419] [2022-11-18 19:51:04,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:04,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 19:51:04,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:04,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 19:51:04,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=896, Unknown=0, NotChecked=0, Total=992 [2022-11-18 19:51:04,103 INFO L87 Difference]: Start difference. First operand 11634 states and 42015 transitions. Second operand has 32 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 31 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:04,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:04,920 INFO L93 Difference]: Finished difference Result 11845 states and 42390 transitions. [2022-11-18 19:51:04,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:51:04,920 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 31 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:51:04,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:04,952 INFO L225 Difference]: With dead ends: 11845 [2022-11-18 19:51:04,952 INFO L226 Difference]: Without dead ends: 11838 [2022-11-18 19:51:04,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 20 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=121, Invalid=1001, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:51:04,953 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 157 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:04,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 98 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:51:04,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11838 states. [2022-11-18 19:51:05,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11838 to 11556. [2022-11-18 19:51:05,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11556 states, 11555 states have (on average 3.6081350064906967) internal successors, (41692), 11555 states have internal predecessors, (41692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:05,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11556 states to 11556 states and 41692 transitions. [2022-11-18 19:51:05,232 INFO L78 Accepts]: Start accepts. Automaton has 11556 states and 41692 transitions. Word has length 23 [2022-11-18 19:51:05,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:05,232 INFO L495 AbstractCegarLoop]: Abstraction has 11556 states and 41692 transitions. [2022-11-18 19:51:05,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 31 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:05,232 INFO L276 IsEmpty]: Start isEmpty. Operand 11556 states and 41692 transitions. [2022-11-18 19:51:05,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:51:05,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:05,251 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:05,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (293)] Forceful destruction successful, exit code 0 [2022-11-18 19:51:05,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 293 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable304 [2022-11-18 19:51:05,452 INFO L420 AbstractCegarLoop]: === Iteration 306 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:51:05,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:05,452 INFO L85 PathProgramCache]: Analyzing trace with hash 336049040, now seen corresponding path program 290 times [2022-11-18 19:51:05,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:05,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841413923] [2022-11-18 19:51:05,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:05,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:06,563 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:06,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:06,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841413923] [2022-11-18 19:51:06,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841413923] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:51:06,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586525254] [2022-11-18 19:51:06,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:51:06,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:06,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:06,564 INFO L229 MonitoredProcess]: Starting monitored process 294 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:06,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (294)] Waiting until timeout for monitored process [2022-11-18 19:51:06,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:51:06,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:51:06,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:51:06,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:07,300 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:51:07,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:07,839 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:07,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586525254] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:07,840 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:51:07,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 13] total 29 [2022-11-18 19:51:07,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011990595] [2022-11-18 19:51:07,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:07,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 19:51:07,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:07,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 19:51:07,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=839, Unknown=0, NotChecked=0, Total=930 [2022-11-18 19:51:07,841 INFO L87 Difference]: Start difference. First operand 11556 states and 41692 transitions. Second operand has 31 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 30 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:08,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:08,827 INFO L93 Difference]: Finished difference Result 11807 states and 42147 transitions. [2022-11-18 19:51:08,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:51:08,827 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 30 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:51:08,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:08,862 INFO L225 Difference]: With dead ends: 11807 [2022-11-18 19:51:08,862 INFO L226 Difference]: Without dead ends: 11794 [2022-11-18 19:51:08,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=123, Invalid=999, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:51:08,863 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 155 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:08,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 106 Invalid, 1286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:51:08,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11794 states. [2022-11-18 19:51:09,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11794 to 11516. [2022-11-18 19:51:09,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11516 states, 11515 states have (on average 3.6057316543638733) internal successors, (41520), 11515 states have internal predecessors, (41520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:09,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11516 states to 11516 states and 41520 transitions. [2022-11-18 19:51:09,155 INFO L78 Accepts]: Start accepts. Automaton has 11516 states and 41520 transitions. Word has length 23 [2022-11-18 19:51:09,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:09,156 INFO L495 AbstractCegarLoop]: Abstraction has 11516 states and 41520 transitions. [2022-11-18 19:51:09,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 30 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:09,156 INFO L276 IsEmpty]: Start isEmpty. Operand 11516 states and 41520 transitions. [2022-11-18 19:51:09,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:51:09,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:09,176 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:09,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (294)] Ended with exit code 0 [2022-11-18 19:51:09,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 294 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable305 [2022-11-18 19:51:09,377 INFO L420 AbstractCegarLoop]: === Iteration 307 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:51:09,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:09,377 INFO L85 PathProgramCache]: Analyzing trace with hash 955281232, now seen corresponding path program 291 times [2022-11-18 19:51:09,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:09,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118497923] [2022-11-18 19:51:09,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:09,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:09,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:10,421 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:10,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:10,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118497923] [2022-11-18 19:51:10,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118497923] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:51:10,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333085203] [2022-11-18 19:51:10,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:51:10,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:10,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:10,423 INFO L229 MonitoredProcess]: Starting monitored process 295 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:10,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (295)] Waiting until timeout for monitored process [2022-11-18 19:51:10,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-18 19:51:10,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:51:10,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:51:10,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:11,163 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:51:11,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:11,674 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:11,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333085203] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:11,675 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:51:11,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 13] total 29 [2022-11-18 19:51:11,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469474793] [2022-11-18 19:51:11,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:11,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 19:51:11,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:11,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 19:51:11,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=839, Unknown=0, NotChecked=0, Total=930 [2022-11-18 19:51:11,676 INFO L87 Difference]: Start difference. First operand 11516 states and 41520 transitions. Second operand has 31 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 30 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:12,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:12,585 INFO L93 Difference]: Finished difference Result 11715 states and 41879 transitions. [2022-11-18 19:51:12,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:51:12,585 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 30 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:51:12,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:12,613 INFO L225 Difference]: With dead ends: 11715 [2022-11-18 19:51:12,613 INFO L226 Difference]: Without dead ends: 11706 [2022-11-18 19:51:12,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=121, Invalid=1001, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:51:12,614 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 180 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:12,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 95 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:51:12,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11706 states. [2022-11-18 19:51:12,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11706 to 11486. [2022-11-18 19:51:12,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11486 states, 11485 states have (on average 3.605833696125381) internal successors, (41413), 11485 states have internal predecessors, (41413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:12,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11486 states to 11486 states and 41413 transitions. [2022-11-18 19:51:12,869 INFO L78 Accepts]: Start accepts. Automaton has 11486 states and 41413 transitions. Word has length 23 [2022-11-18 19:51:12,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:12,870 INFO L495 AbstractCegarLoop]: Abstraction has 11486 states and 41413 transitions. [2022-11-18 19:51:12,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 30 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:12,870 INFO L276 IsEmpty]: Start isEmpty. Operand 11486 states and 41413 transitions. [2022-11-18 19:51:12,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:51:12,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:12,890 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:12,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (295)] Ended with exit code 0 [2022-11-18 19:51:13,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306,295 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:13,091 INFO L420 AbstractCegarLoop]: === Iteration 308 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:51:13,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:13,091 INFO L85 PathProgramCache]: Analyzing trace with hash 2131169496, now seen corresponding path program 292 times [2022-11-18 19:51:13,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:13,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299391841] [2022-11-18 19:51:13,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:13,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:13,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:14,111 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:14,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:14,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299391841] [2022-11-18 19:51:14,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299391841] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:51:14,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700167589] [2022-11-18 19:51:14,111 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:51:14,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:14,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:14,112 INFO L229 MonitoredProcess]: Starting monitored process 296 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:14,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (296)] Waiting until timeout for monitored process [2022-11-18 19:51:14,500 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:51:14,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:51:14,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:51:14,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:14,848 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:14,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:15,411 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:15,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700167589] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:15,411 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:51:15,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 13] total 32 [2022-11-18 19:51:15,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908627461] [2022-11-18 19:51:15,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:15,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 19:51:15,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:15,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 19:51:15,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1019, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:51:15,412 INFO L87 Difference]: Start difference. First operand 11486 states and 41413 transitions. Second operand has 34 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:16,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:16,521 INFO L93 Difference]: Finished difference Result 12047 states and 42940 transitions. [2022-11-18 19:51:16,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:51:16,521 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:51:16,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:16,557 INFO L225 Difference]: With dead ends: 12047 [2022-11-18 19:51:16,557 INFO L226 Difference]: Without dead ends: 12042 [2022-11-18 19:51:16,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=129, Invalid=1203, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 19:51:16,558 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 150 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:16,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 119 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:51:16,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12042 states. [2022-11-18 19:51:16,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12042 to 11620. [2022-11-18 19:51:16,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11620 states, 11619 states have (on average 3.6127033307513554) internal successors, (41976), 11619 states have internal predecessors, (41976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:16,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11620 states to 11620 states and 41976 transitions. [2022-11-18 19:51:16,843 INFO L78 Accepts]: Start accepts. Automaton has 11620 states and 41976 transitions. Word has length 23 [2022-11-18 19:51:16,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:16,843 INFO L495 AbstractCegarLoop]: Abstraction has 11620 states and 41976 transitions. [2022-11-18 19:51:16,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:16,843 INFO L276 IsEmpty]: Start isEmpty. Operand 11620 states and 41976 transitions. [2022-11-18 19:51:16,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:51:16,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:16,865 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:16,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (296)] Forceful destruction successful, exit code 0 [2022-11-18 19:51:17,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307,296 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:17,066 INFO L420 AbstractCegarLoop]: === Iteration 309 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:51:17,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:17,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1304923270, now seen corresponding path program 293 times [2022-11-18 19:51:17,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:17,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431599983] [2022-11-18 19:51:17,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:17,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:18,080 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:18,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:18,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431599983] [2022-11-18 19:51:18,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431599983] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:51:18,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693555925] [2022-11-18 19:51:18,080 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:51:18,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:18,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:18,081 INFO L229 MonitoredProcess]: Starting monitored process 297 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:18,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (297)] Waiting until timeout for monitored process [2022-11-18 19:51:18,479 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-18 19:51:18,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:51:18,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:51:18,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:18,824 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:18,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:19,381 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:19,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693555925] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:19,382 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:51:19,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 13] total 32 [2022-11-18 19:51:19,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680747105] [2022-11-18 19:51:19,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:19,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 19:51:19,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:19,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 19:51:19,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1019, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:51:19,383 INFO L87 Difference]: Start difference. First operand 11620 states and 41976 transitions. Second operand has 34 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:20,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:20,434 INFO L93 Difference]: Finished difference Result 12049 states and 42937 transitions. [2022-11-18 19:51:20,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:51:20,435 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:51:20,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:20,544 INFO L225 Difference]: With dead ends: 12049 [2022-11-18 19:51:20,544 INFO L226 Difference]: Without dead ends: 12042 [2022-11-18 19:51:20,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=129, Invalid=1203, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 19:51:20,544 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 186 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 1497 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 1513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:20,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 124 Invalid, 1513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1497 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:51:20,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12042 states. [2022-11-18 19:51:20,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12042 to 11618. [2022-11-18 19:51:20,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11618 states, 11617 states have (on average 3.6101403116122923) internal successors, (41939), 11617 states have internal predecessors, (41939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:20,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11618 states to 11618 states and 41939 transitions. [2022-11-18 19:51:20,828 INFO L78 Accepts]: Start accepts. Automaton has 11618 states and 41939 transitions. Word has length 23 [2022-11-18 19:51:20,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:20,829 INFO L495 AbstractCegarLoop]: Abstraction has 11618 states and 41939 transitions. [2022-11-18 19:51:20,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:20,829 INFO L276 IsEmpty]: Start isEmpty. Operand 11618 states and 41939 transitions. [2022-11-18 19:51:20,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:51:20,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:20,849 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:20,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (297)] Ended with exit code 0 [2022-11-18 19:51:21,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 297 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable308 [2022-11-18 19:51:21,050 INFO L420 AbstractCegarLoop]: === Iteration 310 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:51:21,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:21,050 INFO L85 PathProgramCache]: Analyzing trace with hash -117804148, now seen corresponding path program 294 times [2022-11-18 19:51:21,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:21,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200004787] [2022-11-18 19:51:21,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:21,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:22,048 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:22,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:22,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200004787] [2022-11-18 19:51:22,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200004787] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:51:22,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056436933] [2022-11-18 19:51:22,049 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:51:22,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:22,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:22,050 INFO L229 MonitoredProcess]: Starting monitored process 298 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:22,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (298)] Waiting until timeout for monitored process [2022-11-18 19:51:22,455 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-18 19:51:22,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:51:22,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:51:22,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:22,787 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:22,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:23,319 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:23,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056436933] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:23,319 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:51:23,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 13] total 28 [2022-11-18 19:51:23,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265375543] [2022-11-18 19:51:23,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:23,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 19:51:23,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:23,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 19:51:23,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2022-11-18 19:51:23,321 INFO L87 Difference]: Start difference. First operand 11618 states and 41939 transitions. Second operand has 30 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 29 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:24,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:24,496 INFO L93 Difference]: Finished difference Result 11979 states and 42710 transitions. [2022-11-18 19:51:24,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:51:24,496 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 29 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:51:24,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:24,529 INFO L225 Difference]: With dead ends: 11979 [2022-11-18 19:51:24,530 INFO L226 Difference]: Without dead ends: 11970 [2022-11-18 19:51:24,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 21 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=110, Invalid=1012, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:51:24,530 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 159 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 1628 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:24,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 129 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1628 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 19:51:24,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11970 states. [2022-11-18 19:51:24,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11970 to 11618. [2022-11-18 19:51:24,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11618 states, 11617 states have (on average 3.609279504174916) internal successors, (41929), 11617 states have internal predecessors, (41929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:24,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11618 states to 11618 states and 41929 transitions. [2022-11-18 19:51:24,888 INFO L78 Accepts]: Start accepts. Automaton has 11618 states and 41929 transitions. Word has length 23 [2022-11-18 19:51:24,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:24,888 INFO L495 AbstractCegarLoop]: Abstraction has 11618 states and 41929 transitions. [2022-11-18 19:51:24,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 29 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:24,888 INFO L276 IsEmpty]: Start isEmpty. Operand 11618 states and 41929 transitions. [2022-11-18 19:51:24,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:51:24,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:24,909 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:24,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (298)] Ended with exit code 0 [2022-11-18 19:51:25,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 298 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable309 [2022-11-18 19:51:25,110 INFO L420 AbstractCegarLoop]: === Iteration 311 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:51:25,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:25,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1971817030, now seen corresponding path program 295 times [2022-11-18 19:51:25,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:25,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142135374] [2022-11-18 19:51:25,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:25,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:25,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:26,145 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:26,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:26,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142135374] [2022-11-18 19:51:26,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142135374] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:51:26,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220486563] [2022-11-18 19:51:26,146 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:51:26,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:26,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:26,147 INFO L229 MonitoredProcess]: Starting monitored process 299 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:26,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (299)] Waiting until timeout for monitored process [2022-11-18 19:51:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:26,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:51:26,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:26,876 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:26,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:27,368 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:27,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220486563] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:27,368 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:51:27,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 13] total 28 [2022-11-18 19:51:27,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996813620] [2022-11-18 19:51:27,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:27,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 19:51:27,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:27,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 19:51:27,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=787, Unknown=0, NotChecked=0, Total=870 [2022-11-18 19:51:27,369 INFO L87 Difference]: Start difference. First operand 11618 states and 41929 transitions. Second operand has 30 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 29 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:28,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:28,493 INFO L93 Difference]: Finished difference Result 11897 states and 42479 transitions. [2022-11-18 19:51:28,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:51:28,493 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 29 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:51:28,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:28,523 INFO L225 Difference]: With dead ends: 11897 [2022-11-18 19:51:28,523 INFO L226 Difference]: Without dead ends: 11892 [2022-11-18 19:51:28,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 22 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=1015, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:51:28,524 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 136 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 1589 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 1600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:28,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 122 Invalid, 1600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1589 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:51:28,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11892 states. [2022-11-18 19:51:28,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11892 to 11618. [2022-11-18 19:51:28,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11618 states, 11617 states have (on average 3.609279504174916) internal successors, (41929), 11617 states have internal predecessors, (41929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:28,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11618 states to 11618 states and 41929 transitions. [2022-11-18 19:51:28,882 INFO L78 Accepts]: Start accepts. Automaton has 11618 states and 41929 transitions. Word has length 23 [2022-11-18 19:51:28,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:28,882 INFO L495 AbstractCegarLoop]: Abstraction has 11618 states and 41929 transitions. [2022-11-18 19:51:28,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 29 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:28,882 INFO L276 IsEmpty]: Start isEmpty. Operand 11618 states and 41929 transitions. [2022-11-18 19:51:28,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:51:28,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:28,904 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:28,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (299)] Forceful destruction successful, exit code 0 [2022-11-18 19:51:29,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 299 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable310 [2022-11-18 19:51:29,105 INFO L420 AbstractCegarLoop]: === Iteration 312 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:51:29,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:29,105 INFO L85 PathProgramCache]: Analyzing trace with hash -2035719862, now seen corresponding path program 296 times [2022-11-18 19:51:29,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:29,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703009743] [2022-11-18 19:51:29,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:29,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:30,185 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:30,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:30,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703009743] [2022-11-18 19:51:30,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703009743] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:51:30,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795424672] [2022-11-18 19:51:30,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:51:30,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:30,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:30,187 INFO L229 MonitoredProcess]: Starting monitored process 300 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:30,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (300)] Waiting until timeout for monitored process [2022-11-18 19:51:30,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:51:30,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:51:30,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:51:30,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:30,906 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:51:30,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:31,440 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:31,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795424672] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:31,440 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:51:31,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 13] total 31 [2022-11-18 19:51:31,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688577652] [2022-11-18 19:51:31,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:31,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-18 19:51:31,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:31,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-18 19:51:31,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=955, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 19:51:31,441 INFO L87 Difference]: Start difference. First operand 11618 states and 41929 transitions. Second operand has 33 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:32,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:32,295 INFO L93 Difference]: Finished difference Result 11961 states and 42908 transitions. [2022-11-18 19:51:32,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:51:32,296 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:51:32,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:32,329 INFO L225 Difference]: With dead ends: 11961 [2022-11-18 19:51:32,329 INFO L226 Difference]: Without dead ends: 11952 [2022-11-18 19:51:32,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=128, Invalid=1062, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 19:51:32,329 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 181 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:32,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 109 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:51:32,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11952 states. [2022-11-18 19:51:32,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11952 to 11778. [2022-11-18 19:51:32,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11778 states, 11777 states have (on average 3.6113611276216355) internal successors, (42531), 11777 states have internal predecessors, (42531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:32,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11778 states to 11778 states and 42531 transitions. [2022-11-18 19:51:32,741 INFO L78 Accepts]: Start accepts. Automaton has 11778 states and 42531 transitions. Word has length 23 [2022-11-18 19:51:32,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:32,741 INFO L495 AbstractCegarLoop]: Abstraction has 11778 states and 42531 transitions. [2022-11-18 19:51:32,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:32,741 INFO L276 IsEmpty]: Start isEmpty. Operand 11778 states and 42531 transitions. [2022-11-18 19:51:32,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:51:32,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:32,770 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:32,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (300)] Ended with exit code 0 [2022-11-18 19:51:32,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 300 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable311 [2022-11-18 19:51:32,971 INFO L420 AbstractCegarLoop]: === Iteration 313 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:51:32,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:32,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1176845332, now seen corresponding path program 297 times [2022-11-18 19:51:32,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:32,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476998260] [2022-11-18 19:51:32,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:32,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:34,176 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:34,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:34,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476998260] [2022-11-18 19:51:34,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476998260] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:51:34,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15161467] [2022-11-18 19:51:34,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:51:34,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:34,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:34,178 INFO L229 MonitoredProcess]: Starting monitored process 301 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:34,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (301)] Waiting until timeout for monitored process [2022-11-18 19:51:34,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 19:51:34,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:51:34,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:51:34,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:34,903 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:51:34,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:35,438 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:35,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15161467] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:35,438 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:51:35,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 13] total 31 [2022-11-18 19:51:35,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462873931] [2022-11-18 19:51:35,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:35,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-18 19:51:35,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:35,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-18 19:51:35,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=955, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 19:51:35,439 INFO L87 Difference]: Start difference. First operand 11778 states and 42531 transitions. Second operand has 33 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:36,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:36,199 INFO L93 Difference]: Finished difference Result 11955 states and 42836 transitions. [2022-11-18 19:51:36,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:51:36,199 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:51:36,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:36,235 INFO L225 Difference]: With dead ends: 11955 [2022-11-18 19:51:36,235 INFO L226 Difference]: Without dead ends: 11948 [2022-11-18 19:51:36,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=1062, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 19:51:36,236 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 158 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:36,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 98 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:51:36,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11948 states. [2022-11-18 19:51:36,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11948 to 11692. [2022-11-18 19:51:36,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11692 states, 11691 states have (on average 3.608074587289368) internal successors, (42182), 11691 states have internal predecessors, (42182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:36,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11692 states to 11692 states and 42182 transitions. [2022-11-18 19:51:36,534 INFO L78 Accepts]: Start accepts. Automaton has 11692 states and 42182 transitions. Word has length 23 [2022-11-18 19:51:36,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:36,534 INFO L495 AbstractCegarLoop]: Abstraction has 11692 states and 42182 transitions. [2022-11-18 19:51:36,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:36,534 INFO L276 IsEmpty]: Start isEmpty. Operand 11692 states and 42182 transitions. [2022-11-18 19:51:36,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:51:36,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:36,556 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:36,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (301)] Ended with exit code 0 [2022-11-18 19:51:36,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 301 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable312 [2022-11-18 19:51:36,756 INFO L420 AbstractCegarLoop]: === Iteration 314 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:51:36,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:36,757 INFO L85 PathProgramCache]: Analyzing trace with hash 880446594, now seen corresponding path program 298 times [2022-11-18 19:51:36,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:36,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560847649] [2022-11-18 19:51:36,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:36,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:37,805 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:37,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:37,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560847649] [2022-11-18 19:51:37,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560847649] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:51:37,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951009447] [2022-11-18 19:51:37,806 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:51:37,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:37,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:37,807 INFO L229 MonitoredProcess]: Starting monitored process 302 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:37,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (302)] Waiting until timeout for monitored process [2022-11-18 19:51:38,202 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:51:38,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:51:38,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:51:38,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:38,530 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:51:38,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:39,064 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:39,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951009447] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:39,065 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:51:39,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 13] total 29 [2022-11-18 19:51:39,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240533094] [2022-11-18 19:51:39,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:39,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 19:51:39,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:39,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 19:51:39,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=839, Unknown=0, NotChecked=0, Total=930 [2022-11-18 19:51:39,066 INFO L87 Difference]: Start difference. First operand 11692 states and 42182 transitions. Second operand has 31 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 30 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:39,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:39,930 INFO L93 Difference]: Finished difference Result 11905 states and 42556 transitions. [2022-11-18 19:51:39,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:51:39,931 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 30 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:51:39,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:39,960 INFO L225 Difference]: With dead ends: 11905 [2022-11-18 19:51:39,960 INFO L226 Difference]: Without dead ends: 11892 [2022-11-18 19:51:39,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=123, Invalid=999, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:51:39,961 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 150 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:39,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 100 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:51:39,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11892 states. [2022-11-18 19:51:40,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11892 to 11656. [2022-11-18 19:51:40,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11656 states, 11655 states have (on average 3.606006006006006) internal successors, (42028), 11655 states have internal predecessors, (42028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:40,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11656 states to 11656 states and 42028 transitions. [2022-11-18 19:51:40,238 INFO L78 Accepts]: Start accepts. Automaton has 11656 states and 42028 transitions. Word has length 23 [2022-11-18 19:51:40,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:40,238 INFO L495 AbstractCegarLoop]: Abstraction has 11656 states and 42028 transitions. [2022-11-18 19:51:40,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 30 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:40,238 INFO L276 IsEmpty]: Start isEmpty. Operand 11656 states and 42028 transitions. [2022-11-18 19:51:40,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:51:40,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:40,259 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:40,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (302)] Ended with exit code 0 [2022-11-18 19:51:40,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313,302 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:40,459 INFO L420 AbstractCegarLoop]: === Iteration 315 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:51:40,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:40,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1499678786, now seen corresponding path program 299 times [2022-11-18 19:51:40,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:40,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052232689] [2022-11-18 19:51:40,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:40,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:41,556 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:41,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:41,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052232689] [2022-11-18 19:51:41,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052232689] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:51:41,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525254979] [2022-11-18 19:51:41,556 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:51:41,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:41,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:41,557 INFO L229 MonitoredProcess]: Starting monitored process 303 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:41,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (303)] Waiting until timeout for monitored process [2022-11-18 19:51:41,958 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-18 19:51:41,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:51:41,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:51:41,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:42,297 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:51:42,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:42,825 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:42,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525254979] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:42,825 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:51:42,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 13] total 29 [2022-11-18 19:51:42,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831213886] [2022-11-18 19:51:42,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:42,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 19:51:42,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:42,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 19:51:42,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=839, Unknown=0, NotChecked=0, Total=930 [2022-11-18 19:51:42,826 INFO L87 Difference]: Start difference. First operand 11656 states and 42028 transitions. Second operand has 31 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 30 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:43,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:43,744 INFO L93 Difference]: Finished difference Result 11857 states and 42376 transitions. [2022-11-18 19:51:43,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:51:43,744 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 30 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:51:43,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:43,775 INFO L225 Difference]: With dead ends: 11857 [2022-11-18 19:51:43,776 INFO L226 Difference]: Without dead ends: 11848 [2022-11-18 19:51:43,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=123, Invalid=999, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:51:43,776 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 140 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:43,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 111 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:51:43,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11848 states. [2022-11-18 19:51:44,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11848 to 11620. [2022-11-18 19:51:44,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11620 states, 11619 states have (on average 3.603236078836389) internal successors, (41866), 11619 states have internal predecessors, (41866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:44,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11620 states to 11620 states and 41866 transitions. [2022-11-18 19:51:44,047 INFO L78 Accepts]: Start accepts. Automaton has 11620 states and 41866 transitions. Word has length 23 [2022-11-18 19:51:44,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:44,047 INFO L495 AbstractCegarLoop]: Abstraction has 11620 states and 41866 transitions. [2022-11-18 19:51:44,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 30 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:44,048 INFO L276 IsEmpty]: Start isEmpty. Operand 11620 states and 41866 transitions. [2022-11-18 19:51:44,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:51:44,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:44,069 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:44,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (303)] Forceful destruction successful, exit code 0 [2022-11-18 19:51:44,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314,303 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:44,269 INFO L420 AbstractCegarLoop]: === Iteration 316 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:51:44,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:44,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1427419476, now seen corresponding path program 300 times [2022-11-18 19:51:44,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:44,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119699750] [2022-11-18 19:51:44,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:44,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:45,325 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:45,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:45,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119699750] [2022-11-18 19:51:45,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119699750] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:51:45,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802397163] [2022-11-18 19:51:45,326 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:51:45,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:45,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:45,327 INFO L229 MonitoredProcess]: Starting monitored process 304 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:45,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (304)] Waiting until timeout for monitored process [2022-11-18 19:51:45,740 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-18 19:51:45,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:51:45,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:51:45,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:46,130 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:51:46,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:46,612 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:46,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802397163] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:46,613 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:51:46,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 13] total 28 [2022-11-18 19:51:46,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982596071] [2022-11-18 19:51:46,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:46,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 19:51:46,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:46,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 19:51:46,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2022-11-18 19:51:46,614 INFO L87 Difference]: Start difference. First operand 11620 states and 41866 transitions. Second operand has 30 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 29 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:47,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:47,530 INFO L93 Difference]: Finished difference Result 11789 states and 42166 transitions. [2022-11-18 19:51:47,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:51:47,530 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 29 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:51:47,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:47,566 INFO L225 Difference]: With dead ends: 11789 [2022-11-18 19:51:47,566 INFO L226 Difference]: Without dead ends: 11778 [2022-11-18 19:51:47,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=120, Invalid=1002, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:51:47,567 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 162 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:47,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 99 Invalid, 1225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1209 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:51:47,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11778 states. [2022-11-18 19:51:47,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11778 to 11588. [2022-11-18 19:51:47,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11588 states, 11587 states have (on average 3.603521187537758) internal successors, (41754), 11587 states have internal predecessors, (41754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:47,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11588 states to 11588 states and 41754 transitions. [2022-11-18 19:51:47,852 INFO L78 Accepts]: Start accepts. Automaton has 11588 states and 41754 transitions. Word has length 23 [2022-11-18 19:51:47,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:47,852 INFO L495 AbstractCegarLoop]: Abstraction has 11588 states and 41754 transitions. [2022-11-18 19:51:47,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 29 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:47,853 INFO L276 IsEmpty]: Start isEmpty. Operand 11588 states and 41754 transitions. [2022-11-18 19:51:47,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:51:47,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:47,873 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:47,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (304)] Ended with exit code 0 [2022-11-18 19:51:48,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 304 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable315 [2022-11-18 19:51:48,073 INFO L420 AbstractCegarLoop]: === Iteration 317 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:51:48,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:48,074 INFO L85 PathProgramCache]: Analyzing trace with hash -525308658, now seen corresponding path program 301 times [2022-11-18 19:51:48,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:48,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813700309] [2022-11-18 19:51:48,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:48,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:49,212 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:49,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:49,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813700309] [2022-11-18 19:51:49,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813700309] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:51:49,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602615661] [2022-11-18 19:51:49,213 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:51:49,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:49,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:49,214 INFO L229 MonitoredProcess]: Starting monitored process 305 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:49,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (305)] Waiting until timeout for monitored process [2022-11-18 19:51:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:49,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:51:49,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:50,007 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:50,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:50,590 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:50,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602615661] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:50,591 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:51:50,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 13] total 34 [2022-11-18 19:51:50,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456082061] [2022-11-18 19:51:50,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:50,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 19:51:50,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:50,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 19:51:50,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1150, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 19:51:50,592 INFO L87 Difference]: Start difference. First operand 11588 states and 41754 transitions. Second operand has 36 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:52,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:52,184 INFO L93 Difference]: Finished difference Result 12349 states and 43955 transitions. [2022-11-18 19:51:52,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:51:52,185 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:51:52,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:52,218 INFO L225 Difference]: With dead ends: 12349 [2022-11-18 19:51:52,218 INFO L226 Difference]: Without dead ends: 12344 [2022-11-18 19:51:52,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=179, Invalid=1713, Unknown=0, NotChecked=0, Total=1892 [2022-11-18 19:51:52,219 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 197 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 1904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:52,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 141 Invalid, 1904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1890 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 19:51:52,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12344 states. [2022-11-18 19:51:52,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12344 to 11768. [2022-11-18 19:51:52,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11768 states, 11767 states have (on average 3.6124755672643833) internal successors, (42508), 11767 states have internal predecessors, (42508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:52,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11768 states to 11768 states and 42508 transitions. [2022-11-18 19:51:52,513 INFO L78 Accepts]: Start accepts. Automaton has 11768 states and 42508 transitions. Word has length 23 [2022-11-18 19:51:52,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:52,513 INFO L495 AbstractCegarLoop]: Abstraction has 11768 states and 42508 transitions. [2022-11-18 19:51:52,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:52,514 INFO L276 IsEmpty]: Start isEmpty. Operand 11768 states and 42508 transitions. [2022-11-18 19:51:52,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:51:52,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:52,549 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:52,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (305)] Forceful destruction successful, exit code 0 [2022-11-18 19:51:52,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 305 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable316 [2022-11-18 19:51:52,756 INFO L420 AbstractCegarLoop]: === Iteration 318 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:51:52,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:52,757 INFO L85 PathProgramCache]: Analyzing trace with hash 333565872, now seen corresponding path program 302 times [2022-11-18 19:51:52,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:52,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492741387] [2022-11-18 19:51:52,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:52,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:53,851 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:53,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:53,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492741387] [2022-11-18 19:51:53,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492741387] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:51:53,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329215710] [2022-11-18 19:51:53,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:51:53,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:53,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:53,852 INFO L229 MonitoredProcess]: Starting monitored process 306 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:53,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (306)] Waiting until timeout for monitored process [2022-11-18 19:51:54,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:51:54,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:51:54,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:51:54,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:54,533 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:54,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:55,058 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:55,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329215710] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:55,059 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:51:55,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 13] total 29 [2022-11-18 19:51:55,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206024816] [2022-11-18 19:51:55,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:55,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 19:51:55,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:55,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 19:51:55,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-11-18 19:51:55,060 INFO L87 Difference]: Start difference. First operand 11768 states and 42508 transitions. Second operand has 31 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:56,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:56,125 INFO L93 Difference]: Finished difference Result 12139 states and 43294 transitions. [2022-11-18 19:51:56,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:51:56,125 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:51:56,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:56,159 INFO L225 Difference]: With dead ends: 12139 [2022-11-18 19:51:56,160 INFO L226 Difference]: Without dead ends: 12132 [2022-11-18 19:51:56,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=112, Invalid=1010, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:51:56,160 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 212 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 1463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:56,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 120 Invalid, 1463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1445 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:51:56,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12132 states. [2022-11-18 19:51:56,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12132 to 11764. [2022-11-18 19:51:56,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11764 states, 11763 states have (on average 3.608943296778033) internal successors, (42452), 11763 states have internal predecessors, (42452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:56,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11764 states to 11764 states and 42452 transitions. [2022-11-18 19:51:56,451 INFO L78 Accepts]: Start accepts. Automaton has 11764 states and 42452 transitions. Word has length 23 [2022-11-18 19:51:56,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:56,451 INFO L495 AbstractCegarLoop]: Abstraction has 11764 states and 42452 transitions. [2022-11-18 19:51:56,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:56,452 INFO L276 IsEmpty]: Start isEmpty. Operand 11764 states and 42452 transitions. [2022-11-18 19:51:56,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:51:56,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:56,473 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:56,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (306)] Ended with exit code 0 [2022-11-18 19:51:56,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317,306 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:56,674 INFO L420 AbstractCegarLoop]: === Iteration 319 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:51:56,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:56,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1520684994, now seen corresponding path program 303 times [2022-11-18 19:51:56,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:56,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546301538] [2022-11-18 19:51:56,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:56,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:57,853 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:57,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:57,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546301538] [2022-11-18 19:51:57,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546301538] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:51:57,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140357984] [2022-11-18 19:51:57,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:51:57,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:57,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:57,855 INFO L229 MonitoredProcess]: Starting monitored process 307 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:57,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (307)] Waiting until timeout for monitored process [2022-11-18 19:51:58,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-18 19:51:58,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:51:58,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:51:58,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:58,614 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:58,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:59,170 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:59,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140357984] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:59,171 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:51:59,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 13] total 31 [2022-11-18 19:51:59,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663693143] [2022-11-18 19:51:59,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:59,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-18 19:51:59,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:59,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-18 19:51:59,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 19:51:59,173 INFO L87 Difference]: Start difference. First operand 11764 states and 42452 transitions. Second operand has 33 states, 32 states have (on average 1.75) internal successors, (56), 32 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:00,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:00,245 INFO L93 Difference]: Finished difference Result 12111 states and 43154 transitions. [2022-11-18 19:52:00,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:52:00,245 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.75) internal successors, (56), 32 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:52:00,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:00,276 INFO L225 Difference]: With dead ends: 12111 [2022-11-18 19:52:00,276 INFO L226 Difference]: Without dead ends: 12102 [2022-11-18 19:52:00,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=126, Invalid=1206, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 19:52:00,277 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 207 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 1384 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:00,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 111 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1384 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:52:00,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12102 states. [2022-11-18 19:52:00,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12102 to 11760. [2022-11-18 19:52:00,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11760 states, 11759 states have (on average 3.6083000255123734) internal successors, (42430), 11759 states have internal predecessors, (42430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:00,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11760 states to 11760 states and 42430 transitions. [2022-11-18 19:52:00,594 INFO L78 Accepts]: Start accepts. Automaton has 11760 states and 42430 transitions. Word has length 23 [2022-11-18 19:52:00,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:00,594 INFO L495 AbstractCegarLoop]: Abstraction has 11760 states and 42430 transitions. [2022-11-18 19:52:00,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.75) internal successors, (56), 32 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:00,594 INFO L276 IsEmpty]: Start isEmpty. Operand 11760 states and 42430 transitions. [2022-11-18 19:52:00,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:52:00,615 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:00,615 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:00,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (307)] Ended with exit code 0 [2022-11-18 19:52:00,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 307 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable318 [2022-11-18 19:52:00,816 INFO L420 AbstractCegarLoop]: === Iteration 320 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:52:00,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:00,816 INFO L85 PathProgramCache]: Analyzing trace with hash -333327888, now seen corresponding path program 304 times [2022-11-18 19:52:00,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:00,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860722995] [2022-11-18 19:52:00,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:00,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:00,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:01,877 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:01,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:01,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860722995] [2022-11-18 19:52:01,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860722995] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:52:01,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575623852] [2022-11-18 19:52:01,877 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:52:01,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:01,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:01,878 INFO L229 MonitoredProcess]: Starting monitored process 308 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:01,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (308)] Waiting until timeout for monitored process [2022-11-18 19:52:02,274 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:52:02,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:52:02,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:52:02,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:02,606 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:02,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:03,105 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:03,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575623852] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:03,106 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:52:03,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 13] total 29 [2022-11-18 19:52:03,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100919827] [2022-11-18 19:52:03,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:03,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 19:52:03,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:03,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 19:52:03,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=842, Unknown=0, NotChecked=0, Total=930 [2022-11-18 19:52:03,107 INFO L87 Difference]: Start difference. First operand 11760 states and 42430 transitions. Second operand has 31 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:04,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:04,535 INFO L93 Difference]: Finished difference Result 12061 states and 43015 transitions. [2022-11-18 19:52:04,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:52:04,535 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:52:04,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:04,571 INFO L225 Difference]: With dead ends: 12061 [2022-11-18 19:52:04,571 INFO L226 Difference]: Without dead ends: 12050 [2022-11-18 19:52:04,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=122, Invalid=1138, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 19:52:04,571 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 144 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 2057 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 2068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:04,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 153 Invalid, 2068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2057 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 19:52:04,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12050 states. [2022-11-18 19:52:04,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12050 to 11756. [2022-11-18 19:52:04,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11756 states, 11755 states have (on average 3.6078264568268823) internal successors, (42410), 11755 states have internal predecessors, (42410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:04,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11756 states to 11756 states and 42410 transitions. [2022-11-18 19:52:04,861 INFO L78 Accepts]: Start accepts. Automaton has 11756 states and 42410 transitions. Word has length 23 [2022-11-18 19:52:04,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:04,861 INFO L495 AbstractCegarLoop]: Abstraction has 11756 states and 42410 transitions. [2022-11-18 19:52:04,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:04,861 INFO L276 IsEmpty]: Start isEmpty. Operand 11756 states and 42410 transitions. [2022-11-18 19:52:04,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:52:04,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:04,881 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:04,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (308)] Ended with exit code 0 [2022-11-18 19:52:05,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 308 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable319 [2022-11-18 19:52:05,082 INFO L420 AbstractCegarLoop]: === Iteration 321 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:52:05,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:05,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1973152382, now seen corresponding path program 305 times [2022-11-18 19:52:05,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:05,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877914212] [2022-11-18 19:52:05,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:05,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:06,294 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:06,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:06,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877914212] [2022-11-18 19:52:06,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877914212] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:52:06,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681725535] [2022-11-18 19:52:06,295 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:52:06,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:06,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:06,296 INFO L229 MonitoredProcess]: Starting monitored process 309 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:06,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (309)] Waiting until timeout for monitored process [2022-11-18 19:52:06,700 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-18 19:52:06,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:52:06,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:52:06,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:07,006 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:07,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:07,452 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:07,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681725535] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:07,452 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:52:07,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 13] total 27 [2022-11-18 19:52:07,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265802231] [2022-11-18 19:52:07,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:07,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 19:52:07,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:07,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 19:52:07,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=734, Unknown=0, NotChecked=0, Total=812 [2022-11-18 19:52:07,453 INFO L87 Difference]: Start difference. First operand 11756 states and 42410 transitions. Second operand has 29 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 28 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:08,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:08,584 INFO L93 Difference]: Finished difference Result 11995 states and 42850 transitions. [2022-11-18 19:52:08,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:52:08,584 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 28 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:52:08,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:08,615 INFO L225 Difference]: With dead ends: 11995 [2022-11-18 19:52:08,615 INFO L226 Difference]: Without dead ends: 11990 [2022-11-18 19:52:08,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=108, Invalid=1014, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:52:08,615 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 136 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:08,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 111 Invalid, 1541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1528 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:52:08,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11990 states. [2022-11-18 19:52:08,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11990 to 11756. [2022-11-18 19:52:08,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11756 states, 11755 states have (on average 3.6078264568268823) internal successors, (42410), 11755 states have internal predecessors, (42410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:08,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11756 states to 11756 states and 42410 transitions. [2022-11-18 19:52:08,908 INFO L78 Accepts]: Start accepts. Automaton has 11756 states and 42410 transitions. Word has length 23 [2022-11-18 19:52:08,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:08,908 INFO L495 AbstractCegarLoop]: Abstraction has 11756 states and 42410 transitions. [2022-11-18 19:52:08,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 28 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:08,908 INFO L276 IsEmpty]: Start isEmpty. Operand 11756 states and 42410 transitions. [2022-11-18 19:52:08,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:52:08,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:08,930 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:08,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (309)] Forceful destruction successful, exit code 0 [2022-11-18 19:52:09,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320,309 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:09,130 INFO L420 AbstractCegarLoop]: === Iteration 322 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:52:09,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:09,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1955702424, now seen corresponding path program 306 times [2022-11-18 19:52:09,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:09,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212648598] [2022-11-18 19:52:09,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:09,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:10,139 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:10,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:10,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212648598] [2022-11-18 19:52:10,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212648598] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:52:10,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850879778] [2022-11-18 19:52:10,140 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:52:10,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:10,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:10,141 INFO L229 MonitoredProcess]: Starting monitored process 310 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:10,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (310)] Waiting until timeout for monitored process [2022-11-18 19:52:10,551 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-18 19:52:10,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:52:10,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:52:10,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:10,874 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:52:10,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:11,464 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:11,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850879778] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:11,464 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:52:11,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 13] total 31 [2022-11-18 19:52:11,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100317797] [2022-11-18 19:52:11,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:11,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-18 19:52:11,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:11,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-18 19:52:11,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=955, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 19:52:11,465 INFO L87 Difference]: Start difference. First operand 11756 states and 42410 transitions. Second operand has 33 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:12,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:12,195 INFO L93 Difference]: Finished difference Result 12053 states and 43201 transitions. [2022-11-18 19:52:12,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:52:12,195 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:52:12,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:12,228 INFO L225 Difference]: With dead ends: 12053 [2022-11-18 19:52:12,228 INFO L226 Difference]: Without dead ends: 12044 [2022-11-18 19:52:12,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=1062, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 19:52:12,229 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 164 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:12,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 98 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:52:12,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12044 states. [2022-11-18 19:52:12,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12044 to 11872. [2022-11-18 19:52:12,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11872 states, 11871 states have (on average 3.6086260635161316) internal successors, (42838), 11871 states have internal predecessors, (42838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:12,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11872 states to 11872 states and 42838 transitions. [2022-11-18 19:52:12,519 INFO L78 Accepts]: Start accepts. Automaton has 11872 states and 42838 transitions. Word has length 23 [2022-11-18 19:52:12,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:12,519 INFO L495 AbstractCegarLoop]: Abstraction has 11872 states and 42838 transitions. [2022-11-18 19:52:12,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:12,519 INFO L276 IsEmpty]: Start isEmpty. Operand 11872 states and 42838 transitions. [2022-11-18 19:52:12,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:52:12,541 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:12,541 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:12,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (310)] Ended with exit code 0 [2022-11-18 19:52:12,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 310 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable321 [2022-11-18 19:52:12,742 INFO L420 AbstractCegarLoop]: === Iteration 323 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:52:12,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:12,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1480390342, now seen corresponding path program 307 times [2022-11-18 19:52:12,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:12,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933003095] [2022-11-18 19:52:12,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:12,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:12,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:13,737 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:13,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:13,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933003095] [2022-11-18 19:52:13,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933003095] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:52:13,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511881001] [2022-11-18 19:52:13,738 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:52:13,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:13,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:13,739 INFO L229 MonitoredProcess]: Starting monitored process 311 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:13,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (311)] Waiting until timeout for monitored process [2022-11-18 19:52:14,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:14,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:52:14,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:14,444 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:52:14,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:14,974 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:14,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511881001] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:14,975 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:52:14,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 13] total 29 [2022-11-18 19:52:14,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541302171] [2022-11-18 19:52:14,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:14,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 19:52:14,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:14,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 19:52:14,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=839, Unknown=0, NotChecked=0, Total=930 [2022-11-18 19:52:14,976 INFO L87 Difference]: Start difference. First operand 11872 states and 42838 transitions. Second operand has 31 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 30 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:15,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:15,785 INFO L93 Difference]: Finished difference Result 12047 states and 43131 transitions. [2022-11-18 19:52:15,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:52:15,786 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 30 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:52:15,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:15,824 INFO L225 Difference]: With dead ends: 12047 [2022-11-18 19:52:15,824 INFO L226 Difference]: Without dead ends: 12040 [2022-11-18 19:52:15,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 21 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 19:52:15,824 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 121 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:15,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 107 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:52:15,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12040 states. [2022-11-18 19:52:16,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12040 to 11804. [2022-11-18 19:52:16,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11804 states, 11803 states have (on average 3.6060323646530543) internal successors, (42562), 11803 states have internal predecessors, (42562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:16,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11804 states to 11804 states and 42562 transitions. [2022-11-18 19:52:16,212 INFO L78 Accepts]: Start accepts. Automaton has 11804 states and 42562 transitions. Word has length 23 [2022-11-18 19:52:16,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:16,212 INFO L495 AbstractCegarLoop]: Abstraction has 11804 states and 42562 transitions. [2022-11-18 19:52:16,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 30 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:16,212 INFO L276 IsEmpty]: Start isEmpty. Operand 11804 states and 42562 transitions. [2022-11-18 19:52:16,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:52:16,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:16,234 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:16,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (311)] Ended with exit code 0 [2022-11-18 19:52:16,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322,311 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:16,434 INFO L420 AbstractCegarLoop]: === Iteration 324 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:52:16,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:16,435 INFO L85 PathProgramCache]: Analyzing trace with hash 576901584, now seen corresponding path program 308 times [2022-11-18 19:52:16,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:16,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706530251] [2022-11-18 19:52:16,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:16,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:17,468 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:17,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:17,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706530251] [2022-11-18 19:52:17,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706530251] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:52:17,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566897192] [2022-11-18 19:52:17,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:52:17,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:17,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:17,470 INFO L229 MonitoredProcess]: Starting monitored process 312 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:17,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (312)] Waiting until timeout for monitored process [2022-11-18 19:52:17,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:52:17,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:52:17,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:52:17,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:18,206 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:52:18,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:18,735 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:18,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566897192] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:18,735 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:52:18,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 13] total 29 [2022-11-18 19:52:18,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881986551] [2022-11-18 19:52:18,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:18,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 19:52:18,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:18,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 19:52:18,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=839, Unknown=0, NotChecked=0, Total=930 [2022-11-18 19:52:18,736 INFO L87 Difference]: Start difference. First operand 11804 states and 42562 transitions. Second operand has 31 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 30 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:19,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:19,569 INFO L93 Difference]: Finished difference Result 11967 states and 42839 transitions. [2022-11-18 19:52:19,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:52:19,569 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 30 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:52:19,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:19,604 INFO L225 Difference]: With dead ends: 11967 [2022-11-18 19:52:19,604 INFO L226 Difference]: Without dead ends: 11954 [2022-11-18 19:52:19,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=121, Invalid=1001, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:52:19,604 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 175 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:19,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 97 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:52:19,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11954 states. [2022-11-18 19:52:19,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11954 to 11774. [2022-11-18 19:52:19,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11774 states, 11773 states have (on average 3.6061326764630937) internal successors, (42455), 11773 states have internal predecessors, (42455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:19,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11774 states to 11774 states and 42455 transitions. [2022-11-18 19:52:19,905 INFO L78 Accepts]: Start accepts. Automaton has 11774 states and 42455 transitions. Word has length 23 [2022-11-18 19:52:19,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:19,905 INFO L495 AbstractCegarLoop]: Abstraction has 11774 states and 42455 transitions. [2022-11-18 19:52:19,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 30 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:19,905 INFO L276 IsEmpty]: Start isEmpty. Operand 11774 states and 42455 transitions. [2022-11-18 19:52:19,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:52:19,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:19,929 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:19,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (312)] Ended with exit code 0 [2022-11-18 19:52:20,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 312 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable323 [2022-11-18 19:52:20,129 INFO L420 AbstractCegarLoop]: === Iteration 325 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:52:20,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:20,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1196133776, now seen corresponding path program 309 times [2022-11-18 19:52:20,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:20,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374423722] [2022-11-18 19:52:20,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:20,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:20,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:21,209 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:21,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:21,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374423722] [2022-11-18 19:52:21,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374423722] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:52:21,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347528801] [2022-11-18 19:52:21,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:52:21,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:21,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:21,210 INFO L229 MonitoredProcess]: Starting monitored process 313 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:21,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (313)] Waiting until timeout for monitored process [2022-11-18 19:52:21,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 19:52:21,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:52:21,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:52:21,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:21,964 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:52:21,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:22,491 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:22,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347528801] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:22,491 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:52:22,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 13] total 29 [2022-11-18 19:52:22,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712946693] [2022-11-18 19:52:22,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:22,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 19:52:22,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:22,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 19:52:22,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=839, Unknown=0, NotChecked=0, Total=930 [2022-11-18 19:52:22,492 INFO L87 Difference]: Start difference. First operand 11774 states and 42455 transitions. Second operand has 31 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 30 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:23,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:23,427 INFO L93 Difference]: Finished difference Result 11943 states and 42732 transitions. [2022-11-18 19:52:23,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:52:23,427 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 30 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:52:23,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:23,462 INFO L225 Difference]: With dead ends: 11943 [2022-11-18 19:52:23,462 INFO L226 Difference]: Without dead ends: 11934 [2022-11-18 19:52:23,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=123, Invalid=999, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:52:23,462 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 118 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:23,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 114 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1261 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:52:23,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11934 states. [2022-11-18 19:52:23,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11934 to 11742. [2022-11-18 19:52:23,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11742 states, 11741 states have (on average 3.6038667915850437) internal successors, (42313), 11741 states have internal predecessors, (42313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:23,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11742 states to 11742 states and 42313 transitions. [2022-11-18 19:52:23,767 INFO L78 Accepts]: Start accepts. Automaton has 11742 states and 42313 transitions. Word has length 23 [2022-11-18 19:52:23,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:23,767 INFO L495 AbstractCegarLoop]: Abstraction has 11742 states and 42313 transitions. [2022-11-18 19:52:23,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 30 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:23,767 INFO L276 IsEmpty]: Start isEmpty. Operand 11742 states and 42313 transitions. [2022-11-18 19:52:23,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:52:23,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:23,791 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:23,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (313)] Forceful destruction successful, exit code 0 [2022-11-18 19:52:23,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 313 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable324 [2022-11-18 19:52:23,991 INFO L420 AbstractCegarLoop]: === Iteration 326 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:52:23,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:23,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1730964486, now seen corresponding path program 310 times [2022-11-18 19:52:23,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:23,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147120140] [2022-11-18 19:52:23,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:23,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:25,188 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:25,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:25,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147120140] [2022-11-18 19:52:25,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147120140] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:52:25,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566002221] [2022-11-18 19:52:25,189 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:52:25,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:25,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:25,190 INFO L229 MonitoredProcess]: Starting monitored process 314 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:25,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (314)] Waiting until timeout for monitored process [2022-11-18 19:52:25,598 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:52:25,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:52:25,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:52:25,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:25,941 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:52:25,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:26,444 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:26,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566002221] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:26,445 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:52:26,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 13] total 28 [2022-11-18 19:52:26,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848797608] [2022-11-18 19:52:26,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:26,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 19:52:26,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:26,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 19:52:26,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2022-11-18 19:52:26,446 INFO L87 Difference]: Start difference. First operand 11742 states and 42313 transitions. Second operand has 30 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 29 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:27,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:27,326 INFO L93 Difference]: Finished difference Result 11939 states and 42636 transitions. [2022-11-18 19:52:27,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:52:27,327 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 29 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:52:27,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:27,362 INFO L225 Difference]: With dead ends: 11939 [2022-11-18 19:52:27,363 INFO L226 Difference]: Without dead ends: 11928 [2022-11-18 19:52:27,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 22 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=122, Invalid=1000, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:52:27,363 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 176 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:27,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 94 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:52:27,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11928 states. [2022-11-18 19:52:27,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11928 to 11712. [2022-11-18 19:52:27,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11712 states, 11711 states have (on average 3.602766629664418) internal successors, (42192), 11711 states have internal predecessors, (42192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:27,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11712 states to 11712 states and 42192 transitions. [2022-11-18 19:52:27,670 INFO L78 Accepts]: Start accepts. Automaton has 11712 states and 42192 transitions. Word has length 23 [2022-11-18 19:52:27,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:27,670 INFO L495 AbstractCegarLoop]: Abstraction has 11712 states and 42192 transitions. [2022-11-18 19:52:27,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 29 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:27,671 INFO L276 IsEmpty]: Start isEmpty. Operand 11712 states and 42192 transitions. [2022-11-18 19:52:27,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:52:27,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:27,692 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:27,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (314)] Ended with exit code 0 [2022-11-18 19:52:27,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 314 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable325 [2022-11-18 19:52:27,893 INFO L420 AbstractCegarLoop]: === Iteration 327 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:52:27,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:27,893 INFO L85 PathProgramCache]: Analyzing trace with hash 2018269904, now seen corresponding path program 311 times [2022-11-18 19:52:27,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:27,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298353508] [2022-11-18 19:52:27,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:27,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:27,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:28,942 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:28,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:28,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298353508] [2022-11-18 19:52:28,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298353508] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:52:28,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126759342] [2022-11-18 19:52:28,943 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:52:28,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:28,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:28,944 INFO L229 MonitoredProcess]: Starting monitored process 315 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:28,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (315)] Waiting until timeout for monitored process [2022-11-18 19:52:29,360 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-18 19:52:29,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:52:29,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:52:29,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:29,686 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:52:29,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:30,209 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:30,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126759342] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:30,209 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:52:30,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 13] total 27 [2022-11-18 19:52:30,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432415229] [2022-11-18 19:52:30,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:30,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 19:52:30,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:30,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 19:52:30,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2022-11-18 19:52:30,210 INFO L87 Difference]: Start difference. First operand 11712 states and 42192 transitions. Second operand has 29 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 28 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:31,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:31,249 INFO L93 Difference]: Finished difference Result 11849 states and 42421 transitions. [2022-11-18 19:52:31,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:52:31,249 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 28 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:52:31,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:31,282 INFO L225 Difference]: With dead ends: 11849 [2022-11-18 19:52:31,282 INFO L226 Difference]: Without dead ends: 11836 [2022-11-18 19:52:31,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=121, Invalid=1001, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:52:31,283 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 130 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:31,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 109 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:52:31,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11836 states. [2022-11-18 19:52:31,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11836 to 11682. [2022-11-18 19:52:31,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11682 states, 11681 states have (on average 3.603030562451845) internal successors, (42087), 11681 states have internal predecessors, (42087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:31,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11682 states to 11682 states and 42087 transitions. [2022-11-18 19:52:31,572 INFO L78 Accepts]: Start accepts. Automaton has 11682 states and 42087 transitions. Word has length 23 [2022-11-18 19:52:31,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:31,572 INFO L495 AbstractCegarLoop]: Abstraction has 11682 states and 42087 transitions. [2022-11-18 19:52:31,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 28 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:31,572 INFO L276 IsEmpty]: Start isEmpty. Operand 11682 states and 42087 transitions. [2022-11-18 19:52:31,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:52:31,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:31,596 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:31,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (315)] Ended with exit code 0 [2022-11-18 19:52:31,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 315 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable326 [2022-11-18 19:52:31,796 INFO L420 AbstractCegarLoop]: === Iteration 328 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:52:31,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:31,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1271752808, now seen corresponding path program 312 times [2022-11-18 19:52:31,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:31,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721564645] [2022-11-18 19:52:31,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:31,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:32,834 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:32,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:32,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721564645] [2022-11-18 19:52:32,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721564645] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:52:32,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197195523] [2022-11-18 19:52:32,835 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:52:32,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:32,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:32,836 INFO L229 MonitoredProcess]: Starting monitored process 316 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:32,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (316)] Waiting until timeout for monitored process [2022-11-18 19:52:33,254 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-18 19:52:33,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:52:33,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:52:33,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:33,515 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:33,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:34,068 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:34,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197195523] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:34,068 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:52:34,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 29 [2022-11-18 19:52:34,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688060167] [2022-11-18 19:52:34,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:34,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 19:52:34,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:34,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 19:52:34,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-11-18 19:52:34,069 INFO L87 Difference]: Start difference. First operand 11682 states and 42087 transitions. Second operand has 31 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 30 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:35,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:35,115 INFO L93 Difference]: Finished difference Result 12137 states and 43330 transitions. [2022-11-18 19:52:35,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:52:35,115 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 30 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:52:35,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:35,147 INFO L225 Difference]: With dead ends: 12137 [2022-11-18 19:52:35,147 INFO L226 Difference]: Without dead ends: 12132 [2022-11-18 19:52:35,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=112, Invalid=1010, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:52:35,148 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 182 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:35,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 121 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1383 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:52:35,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12132 states. [2022-11-18 19:52:35,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12132 to 11870. [2022-11-18 19:52:35,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11870 states, 11869 states have (on average 3.611508972954756) internal successors, (42865), 11869 states have internal predecessors, (42865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:35,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11870 states to 11870 states and 42865 transitions. [2022-11-18 19:52:35,515 INFO L78 Accepts]: Start accepts. Automaton has 11870 states and 42865 transitions. Word has length 23 [2022-11-18 19:52:35,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:35,515 INFO L495 AbstractCegarLoop]: Abstraction has 11870 states and 42865 transitions. [2022-11-18 19:52:35,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 30 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:35,515 INFO L276 IsEmpty]: Start isEmpty. Operand 11870 states and 42865 transitions. [2022-11-18 19:52:35,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:52:35,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:35,538 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:35,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (316)] Ended with exit code 0 [2022-11-18 19:52:35,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 316 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable327 [2022-11-18 19:52:35,738 INFO L420 AbstractCegarLoop]: === Iteration 329 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:52:35,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:35,739 INFO L85 PathProgramCache]: Analyzing trace with hash -412878278, now seen corresponding path program 313 times [2022-11-18 19:52:35,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:35,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676954015] [2022-11-18 19:52:35,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:35,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:36,984 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:36,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:36,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676954015] [2022-11-18 19:52:36,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676954015] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:52:36,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374572587] [2022-11-18 19:52:36,984 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:52:36,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:36,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:36,986 INFO L229 MonitoredProcess]: Starting monitored process 317 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:37,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (317)] Waiting until timeout for monitored process [2022-11-18 19:52:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:37,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:52:37,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:37,848 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:37,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:38,416 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:38,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374572587] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:38,417 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:52:38,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 35 [2022-11-18 19:52:38,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365262775] [2022-11-18 19:52:38,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:38,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 19:52:38,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:38,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 19:52:38,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1214, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 19:52:38,418 INFO L87 Difference]: Start difference. First operand 11870 states and 42865 transitions. Second operand has 37 states, 36 states have (on average 1.75) internal successors, (63), 36 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:39,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:39,661 INFO L93 Difference]: Finished difference Result 12313 states and 43869 transitions. [2022-11-18 19:52:39,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:52:39,661 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.75) internal successors, (63), 36 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:52:39,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:39,695 INFO L225 Difference]: With dead ends: 12313 [2022-11-18 19:52:39,696 INFO L226 Difference]: Without dead ends: 12306 [2022-11-18 19:52:39,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=181, Invalid=1711, Unknown=0, NotChecked=0, Total=1892 [2022-11-18 19:52:39,696 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 232 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:39,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 112 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:52:39,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12306 states. [2022-11-18 19:52:39,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12306 to 11850. [2022-11-18 19:52:39,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11850 states, 11849 states have (on average 3.608827749177146) internal successors, (42761), 11849 states have internal predecessors, (42761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:39,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11850 states to 11850 states and 42761 transitions. [2022-11-18 19:52:39,992 INFO L78 Accepts]: Start accepts. Automaton has 11850 states and 42761 transitions. Word has length 23 [2022-11-18 19:52:39,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:39,992 INFO L495 AbstractCegarLoop]: Abstraction has 11850 states and 42761 transitions. [2022-11-18 19:52:39,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.75) internal successors, (63), 36 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:39,992 INFO L276 IsEmpty]: Start isEmpty. Operand 11850 states and 42761 transitions. [2022-11-18 19:52:40,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:52:40,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:40,014 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:40,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (317)] Ended with exit code 0 [2022-11-18 19:52:40,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328,317 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:40,214 INFO L420 AbstractCegarLoop]: === Iteration 330 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:52:40,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:40,214 INFO L85 PathProgramCache]: Analyzing trace with hash 774240844, now seen corresponding path program 314 times [2022-11-18 19:52:40,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:40,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748931147] [2022-11-18 19:52:40,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:40,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:41,271 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:41,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:41,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748931147] [2022-11-18 19:52:41,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748931147] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:52:41,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375630731] [2022-11-18 19:52:41,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:52:41,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:41,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:41,272 INFO L229 MonitoredProcess]: Starting monitored process 318 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:41,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (318)] Waiting until timeout for monitored process [2022-11-18 19:52:41,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:52:41,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:52:41,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:52:41,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:42,028 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:42,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:42,563 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:42,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375630731] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:42,564 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:52:42,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 32 [2022-11-18 19:52:42,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921952553] [2022-11-18 19:52:42,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:42,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 19:52:42,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:42,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 19:52:42,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1019, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:52:42,565 INFO L87 Difference]: Start difference. First operand 11850 states and 42761 transitions. Second operand has 34 states, 33 states have (on average 1.696969696969697) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:43,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:43,856 INFO L93 Difference]: Finished difference Result 12119 states and 43205 transitions. [2022-11-18 19:52:43,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:52:43,856 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.696969696969697) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:52:43,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:43,888 INFO L225 Difference]: With dead ends: 12119 [2022-11-18 19:52:43,888 INFO L226 Difference]: Without dead ends: 12110 [2022-11-18 19:52:43,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=1275, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 19:52:43,888 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 162 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 1852 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 1865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:43,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 151 Invalid, 1865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1852 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 19:52:43,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12110 states. [2022-11-18 19:52:44,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12110 to 11844. [2022-11-18 19:52:44,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11844 states, 11843 states have (on average 3.608207379886853) internal successors, (42732), 11843 states have internal predecessors, (42732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:44,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11844 states to 11844 states and 42732 transitions. [2022-11-18 19:52:44,204 INFO L78 Accepts]: Start accepts. Automaton has 11844 states and 42732 transitions. Word has length 23 [2022-11-18 19:52:44,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:44,204 INFO L495 AbstractCegarLoop]: Abstraction has 11844 states and 42732 transitions. [2022-11-18 19:52:44,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.696969696969697) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:44,204 INFO L276 IsEmpty]: Start isEmpty. Operand 11844 states and 42732 transitions. [2022-11-18 19:52:44,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:52:44,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:44,228 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:44,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (318)] Ended with exit code 0 [2022-11-18 19:52:44,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329,318 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:44,428 INFO L420 AbstractCegarLoop]: === Iteration 331 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:52:44,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:44,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1079772038, now seen corresponding path program 315 times [2022-11-18 19:52:44,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:44,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674931453] [2022-11-18 19:52:44,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:44,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:45,521 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:45,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:45,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674931453] [2022-11-18 19:52:45,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674931453] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:52:45,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131282514] [2022-11-18 19:52:45,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:52:45,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:45,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:45,522 INFO L229 MonitoredProcess]: Starting monitored process 319 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:45,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (319)] Waiting until timeout for monitored process [2022-11-18 19:52:45,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 19:52:45,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:52:45,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:52:45,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:46,287 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:46,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:46,782 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:46,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131282514] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:46,783 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:52:46,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 30 [2022-11-18 19:52:46,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508702590] [2022-11-18 19:52:46,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:46,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 19:52:46,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:46,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 19:52:46,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=899, Unknown=0, NotChecked=0, Total=992 [2022-11-18 19:52:46,784 INFO L87 Difference]: Start difference. First operand 11844 states and 42732 transitions. Second operand has 32 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 31 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:48,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:48,092 INFO L93 Difference]: Finished difference Result 12125 states and 43190 transitions. [2022-11-18 19:52:48,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:52:48,092 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 31 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:52:48,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:48,122 INFO L225 Difference]: With dead ends: 12125 [2022-11-18 19:52:48,122 INFO L226 Difference]: Without dead ends: 12114 [2022-11-18 19:52:48,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 19:52:48,123 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 159 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 1821 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 1836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:48,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 142 Invalid, 1836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1821 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 19:52:48,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12114 states. [2022-11-18 19:52:48,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12114 to 11838. [2022-11-18 19:52:48,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11838 states, 11837 states have (on average 3.6077553434147167) internal successors, (42705), 11837 states have internal predecessors, (42705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:48,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11838 states to 11838 states and 42705 transitions. [2022-11-18 19:52:48,425 INFO L78 Accepts]: Start accepts. Automaton has 11838 states and 42705 transitions. Word has length 23 [2022-11-18 19:52:48,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:48,425 INFO L495 AbstractCegarLoop]: Abstraction has 11838 states and 42705 transitions. [2022-11-18 19:52:48,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 31 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:48,425 INFO L276 IsEmpty]: Start isEmpty. Operand 11838 states and 42705 transitions. [2022-11-18 19:52:48,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:52:48,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:48,448 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:48,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (319)] Forceful destruction successful, exit code 0 [2022-11-18 19:52:48,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330,319 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:48,648 INFO L420 AbstractCegarLoop]: === Iteration 332 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:52:48,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:48,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1575370764, now seen corresponding path program 316 times [2022-11-18 19:52:48,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:48,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490938439] [2022-11-18 19:52:48,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:48,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:49,749 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:49,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:49,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490938439] [2022-11-18 19:52:49,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490938439] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:52:49,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647228461] [2022-11-18 19:52:49,749 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:52:49,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:49,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:49,750 INFO L229 MonitoredProcess]: Starting monitored process 320 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:49,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (320)] Waiting until timeout for monitored process [2022-11-18 19:52:50,166 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:52:50,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:52:50,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:52:50,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:50,464 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:50,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:50,938 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:50,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647228461] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:50,939 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:52:50,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 26 [2022-11-18 19:52:50,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227867585] [2022-11-18 19:52:50,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:50,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 19:52:50,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:50,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 19:52:50,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=682, Unknown=0, NotChecked=0, Total=756 [2022-11-18 19:52:50,940 INFO L87 Difference]: Start difference. First operand 11838 states and 42705 transitions. Second operand has 28 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:52,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:52,313 INFO L93 Difference]: Finished difference Result 12081 states and 43100 transitions. [2022-11-18 19:52:52,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:52:52,313 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:52:52,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:52,346 INFO L225 Difference]: With dead ends: 12081 [2022-11-18 19:52:52,346 INFO L226 Difference]: Without dead ends: 12068 [2022-11-18 19:52:52,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=112, Invalid=1010, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:52:52,347 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 134 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 1856 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 1868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:52,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 136 Invalid, 1868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1856 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 19:52:52,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12068 states. [2022-11-18 19:52:52,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12068 to 11832. [2022-11-18 19:52:52,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11832 states, 11831 states have (on average 3.607471895866791) internal successors, (42680), 11831 states have internal predecessors, (42680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:52,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11832 states to 11832 states and 42680 transitions. [2022-11-18 19:52:52,651 INFO L78 Accepts]: Start accepts. Automaton has 11832 states and 42680 transitions. Word has length 23 [2022-11-18 19:52:52,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:52,651 INFO L495 AbstractCegarLoop]: Abstraction has 11832 states and 42680 transitions. [2022-11-18 19:52:52,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:52,651 INFO L276 IsEmpty]: Start isEmpty. Operand 11832 states and 42680 transitions. [2022-11-18 19:52:52,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:52:52,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:52,674 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:52,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (320)] Ended with exit code 0 [2022-11-18 19:52:52,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 320 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable331 [2022-11-18 19:52:52,875 INFO L420 AbstractCegarLoop]: === Iteration 333 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:52:52,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:52,875 INFO L85 PathProgramCache]: Analyzing trace with hash -2014548294, now seen corresponding path program 317 times [2022-11-18 19:52:52,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:52,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752024327] [2022-11-18 19:52:52,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:52,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:53,918 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:53,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:53,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752024327] [2022-11-18 19:52:53,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752024327] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:52:53,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558127441] [2022-11-18 19:52:53,918 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:52:53,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:53,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:53,919 INFO L229 MonitoredProcess]: Starting monitored process 321 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:53,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (321)] Waiting until timeout for monitored process [2022-11-18 19:52:54,332 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-18 19:52:54,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:52:54,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:52:54,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:54,640 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:54,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:55,077 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:55,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558127441] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:55,077 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:52:55,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 26 [2022-11-18 19:52:55,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450832595] [2022-11-18 19:52:55,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:55,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 19:52:55,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:55,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 19:52:55,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2022-11-18 19:52:55,078 INFO L87 Difference]: Start difference. First operand 11832 states and 42680 transitions. Second operand has 28 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:56,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:56,351 INFO L93 Difference]: Finished difference Result 12027 states and 42991 transitions. [2022-11-18 19:52:56,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:52:56,351 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:52:56,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:56,385 INFO L225 Difference]: With dead ends: 12027 [2022-11-18 19:52:56,385 INFO L226 Difference]: Without dead ends: 12022 [2022-11-18 19:52:56,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 26 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=109, Invalid=1013, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:52:56,386 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 142 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:56,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 120 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 19:52:56,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12022 states. [2022-11-18 19:52:56,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12022 to 11832. [2022-11-18 19:52:56,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11832 states, 11831 states have (on average 3.607471895866791) internal successors, (42680), 11831 states have internal predecessors, (42680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:56,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11832 states to 11832 states and 42680 transitions. [2022-11-18 19:52:56,669 INFO L78 Accepts]: Start accepts. Automaton has 11832 states and 42680 transitions. Word has length 23 [2022-11-18 19:52:56,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:56,669 INFO L495 AbstractCegarLoop]: Abstraction has 11832 states and 42680 transitions. [2022-11-18 19:52:56,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:56,669 INFO L276 IsEmpty]: Start isEmpty. Operand 11832 states and 42680 transitions. [2022-11-18 19:52:56,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:52:56,689 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:56,689 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:56,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (321)] Forceful destruction successful, exit code 0 [2022-11-18 19:52:56,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 321 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable332 [2022-11-18 19:52:56,890 INFO L420 AbstractCegarLoop]: === Iteration 334 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:52:56,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:56,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1140919630, now seen corresponding path program 318 times [2022-11-18 19:52:56,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:56,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936586255] [2022-11-18 19:52:56,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:56,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:57,872 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:57,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:57,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936586255] [2022-11-18 19:52:57,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936586255] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:52:57,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251366741] [2022-11-18 19:52:57,873 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:52:57,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:57,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:57,874 INFO L229 MonitoredProcess]: Starting monitored process 322 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:57,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (322)] Waiting until timeout for monitored process [2022-11-18 19:52:58,292 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-18 19:52:58,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:52:58,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:52:58,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:58,622 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:58,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:59,138 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:59,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251366741] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:59,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:52:59,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 33 [2022-11-18 19:52:59,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176186105] [2022-11-18 19:52:59,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:59,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 19:52:59,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:59,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 19:52:59,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1082, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 19:52:59,139 INFO L87 Difference]: Start difference. First operand 11832 states and 42680 transitions. Second operand has 35 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 34 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:00,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:00,463 INFO L93 Difference]: Finished difference Result 12815 states and 45457 transitions. [2022-11-18 19:53:00,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:53:00,463 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 34 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:53:00,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:00,499 INFO L225 Difference]: With dead ends: 12815 [2022-11-18 19:53:00,499 INFO L226 Difference]: Without dead ends: 12806 [2022-11-18 19:53:00,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=1275, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 19:53:00,500 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 172 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2085 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 2100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:00,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 144 Invalid, 2100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2085 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 19:53:00,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12806 states. [2022-11-18 19:53:00,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12806 to 12072. [2022-11-18 19:53:00,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12072 states, 12071 states have (on average 3.6139507911523485) internal successors, (43624), 12071 states have internal predecessors, (43624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:00,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12072 states to 12072 states and 43624 transitions. [2022-11-18 19:53:00,867 INFO L78 Accepts]: Start accepts. Automaton has 12072 states and 43624 transitions. Word has length 23 [2022-11-18 19:53:00,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:00,867 INFO L495 AbstractCegarLoop]: Abstraction has 12072 states and 43624 transitions. [2022-11-18 19:53:00,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 34 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:00,868 INFO L276 IsEmpty]: Start isEmpty. Operand 12072 states and 43624 transitions. [2022-11-18 19:53:00,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:53:00,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:00,888 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:00,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (322)] Ended with exit code 0 [2022-11-18 19:53:01,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 322 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable333 [2022-11-18 19:53:01,089 INFO L420 AbstractCegarLoop]: === Iteration 335 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:53:01,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:01,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1999794160, now seen corresponding path program 319 times [2022-11-18 19:53:01,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:01,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069911307] [2022-11-18 19:53:01,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:01,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:02,100 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:02,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:02,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069911307] [2022-11-18 19:53:02,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069911307] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:02,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411952000] [2022-11-18 19:53:02,101 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:53:02,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:02,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:02,102 INFO L229 MonitoredProcess]: Starting monitored process 323 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:02,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (323)] Waiting until timeout for monitored process [2022-11-18 19:53:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:02,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:53:02,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:02,843 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:02,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:03,373 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:03,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411952000] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:03,373 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:03,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 34 [2022-11-18 19:53:03,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812037970] [2022-11-18 19:53:03,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:03,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 19:53:03,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:03,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 19:53:03,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1147, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 19:53:03,374 INFO L87 Difference]: Start difference. First operand 12072 states and 43624 transitions. Second operand has 36 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:04,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:04,727 INFO L93 Difference]: Finished difference Result 12799 states and 45402 transitions. [2022-11-18 19:53:04,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:53:04,728 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:53:04,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:04,762 INFO L225 Difference]: With dead ends: 12799 [2022-11-18 19:53:04,762 INFO L226 Difference]: Without dead ends: 12794 [2022-11-18 19:53:04,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=139, Invalid=1343, Unknown=0, NotChecked=0, Total=1482 [2022-11-18 19:53:04,763 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 175 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 2118 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 2132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:04,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 142 Invalid, 2132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2118 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 19:53:04,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12794 states. [2022-11-18 19:53:05,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12794 to 12050. [2022-11-18 19:53:05,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12050 states, 12049 states have (on average 3.6134948958419786) internal successors, (43539), 12049 states have internal predecessors, (43539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:05,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12050 states to 12050 states and 43539 transitions. [2022-11-18 19:53:05,070 INFO L78 Accepts]: Start accepts. Automaton has 12050 states and 43539 transitions. Word has length 23 [2022-11-18 19:53:05,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:05,071 INFO L495 AbstractCegarLoop]: Abstraction has 12050 states and 43539 transitions. [2022-11-18 19:53:05,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:05,071 INFO L276 IsEmpty]: Start isEmpty. Operand 12050 states and 43539 transitions. [2022-11-18 19:53:05,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:53:05,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:05,092 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:05,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (323)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:05,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 323 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable334 [2022-11-18 19:53:05,292 INFO L420 AbstractCegarLoop]: === Iteration 336 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:53:05,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:05,293 INFO L85 PathProgramCache]: Analyzing trace with hash -237881210, now seen corresponding path program 320 times [2022-11-18 19:53:05,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:05,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932098141] [2022-11-18 19:53:05,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:05,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:06,420 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:06,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:06,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932098141] [2022-11-18 19:53:06,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932098141] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:06,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102272905] [2022-11-18 19:53:06,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:53:06,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:06,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:06,422 INFO L229 MonitoredProcess]: Starting monitored process 324 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:06,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (324)] Waiting until timeout for monitored process [2022-11-18 19:53:06,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:53:06,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:53:06,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:53:06,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:07,250 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:07,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:07,804 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:07,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102272905] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:07,804 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:07,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 34 [2022-11-18 19:53:07,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402025159] [2022-11-18 19:53:07,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:07,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 19:53:07,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:07,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 19:53:07,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1157, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 19:53:07,805 INFO L87 Difference]: Start difference. First operand 12050 states and 43539 transitions. Second operand has 36 states, 35 states have (on average 1.7714285714285714) internal successors, (62), 35 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:09,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:09,542 INFO L93 Difference]: Finished difference Result 12791 states and 45321 transitions. [2022-11-18 19:53:09,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:53:09,543 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.7714285714285714) internal successors, (62), 35 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:53:09,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:09,577 INFO L225 Difference]: With dead ends: 12791 [2022-11-18 19:53:09,577 INFO L226 Difference]: Without dead ends: 12778 [2022-11-18 19:53:09,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=134, Invalid=1426, Unknown=0, NotChecked=0, Total=1560 [2022-11-18 19:53:09,577 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 161 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 2611 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 2627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:09,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 177 Invalid, 2627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2611 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 19:53:09,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12778 states. [2022-11-18 19:53:09,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12778 to 12042. [2022-11-18 19:53:09,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12042 states, 12041 states have (on average 3.6127398056639812) internal successors, (43501), 12041 states have internal predecessors, (43501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:09,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12042 states to 12042 states and 43501 transitions. [2022-11-18 19:53:09,852 INFO L78 Accepts]: Start accepts. Automaton has 12042 states and 43501 transitions. Word has length 23 [2022-11-18 19:53:09,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:09,852 INFO L495 AbstractCegarLoop]: Abstraction has 12042 states and 43501 transitions. [2022-11-18 19:53:09,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.7714285714285714) internal successors, (62), 35 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:09,853 INFO L276 IsEmpty]: Start isEmpty. Operand 12042 states and 43501 transitions. [2022-11-18 19:53:09,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:53:09,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:09,871 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:09,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (324)] Ended with exit code 0 [2022-11-18 19:53:10,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 324 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable335 [2022-11-18 19:53:10,071 INFO L420 AbstractCegarLoop]: === Iteration 337 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:53:10,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:10,072 INFO L85 PathProgramCache]: Analyzing trace with hash -31034290, now seen corresponding path program 321 times [2022-11-18 19:53:10,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:10,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251763296] [2022-11-18 19:53:10,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:10,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:11,155 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:11,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:11,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251763296] [2022-11-18 19:53:11,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251763296] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:11,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509860589] [2022-11-18 19:53:11,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:53:11,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:11,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:11,156 INFO L229 MonitoredProcess]: Starting monitored process 325 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:11,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (325)] Waiting until timeout for monitored process [2022-11-18 19:53:11,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 19:53:11,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:53:11,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:53:11,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:11,917 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:11,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:12,412 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:12,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509860589] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:12,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:12,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 30 [2022-11-18 19:53:12,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863124435] [2022-11-18 19:53:12,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:12,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 19:53:12,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:12,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 19:53:12,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=899, Unknown=0, NotChecked=0, Total=992 [2022-11-18 19:53:12,413 INFO L87 Difference]: Start difference. First operand 12042 states and 43501 transitions. Second operand has 32 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 31 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:13,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:13,664 INFO L93 Difference]: Finished difference Result 12808 states and 45243 transitions. [2022-11-18 19:53:13,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:53:13,664 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 31 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:53:13,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:13,700 INFO L225 Difference]: With dead ends: 12808 [2022-11-18 19:53:13,700 INFO L226 Difference]: Without dead ends: 12774 [2022-11-18 19:53:13,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=138, Invalid=1268, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 19:53:13,701 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 208 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 1655 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 1672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:13,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 105 Invalid, 1672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1655 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 19:53:13,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12774 states. [2022-11-18 19:53:13,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12774 to 11996. [2022-11-18 19:53:13,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11996 states, 11995 states have (on average 3.611671529804085) internal successors, (43322), 11995 states have internal predecessors, (43322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:14,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11996 states to 11996 states and 43322 transitions. [2022-11-18 19:53:14,011 INFO L78 Accepts]: Start accepts. Automaton has 11996 states and 43322 transitions. Word has length 23 [2022-11-18 19:53:14,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:14,011 INFO L495 AbstractCegarLoop]: Abstraction has 11996 states and 43322 transitions. [2022-11-18 19:53:14,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 31 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:14,012 INFO L276 IsEmpty]: Start isEmpty. Operand 11996 states and 43322 transitions. [2022-11-18 19:53:14,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:53:14,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:14,034 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:14,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (325)] Ended with exit code 0 [2022-11-18 19:53:14,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 325 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable336 [2022-11-18 19:53:14,235 INFO L420 AbstractCegarLoop]: === Iteration 338 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:53:14,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:14,235 INFO L85 PathProgramCache]: Analyzing trace with hash 2086252934, now seen corresponding path program 322 times [2022-11-18 19:53:14,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:14,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055362260] [2022-11-18 19:53:14,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:14,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:15,296 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:15,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:15,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055362260] [2022-11-18 19:53:15,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055362260] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:15,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229463982] [2022-11-18 19:53:15,296 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:53:15,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:15,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:15,297 INFO L229 MonitoredProcess]: Starting monitored process 326 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:15,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (326)] Waiting until timeout for monitored process [2022-11-18 19:53:15,708 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:53:15,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:53:15,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:53:15,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:15,991 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:15,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:16,438 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:16,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229463982] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:16,438 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:16,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 26 [2022-11-18 19:53:16,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765961000] [2022-11-18 19:53:16,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:16,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 19:53:16,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:16,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 19:53:16,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=682, Unknown=0, NotChecked=0, Total=756 [2022-11-18 19:53:16,440 INFO L87 Difference]: Start difference. First operand 11996 states and 43322 transitions. Second operand has 28 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 27 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:17,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:17,890 INFO L93 Difference]: Finished difference Result 12582 states and 44622 transitions. [2022-11-18 19:53:17,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 19:53:17,890 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 27 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:53:17,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:17,923 INFO L225 Difference]: With dead ends: 12582 [2022-11-18 19:53:17,923 INFO L226 Difference]: Without dead ends: 12540 [2022-11-18 19:53:17,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 26 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=123, Invalid=1067, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 19:53:17,923 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 136 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 2000 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 2011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:17,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 137 Invalid, 2011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2000 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 19:53:17,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12540 states. [2022-11-18 19:53:18,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12540 to 11952. [2022-11-18 19:53:18,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11952 states, 11951 states have (on average 3.6115806208685464) internal successors, (43162), 11951 states have internal predecessors, (43162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:18,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11952 states to 11952 states and 43162 transitions. [2022-11-18 19:53:18,218 INFO L78 Accepts]: Start accepts. Automaton has 11952 states and 43162 transitions. Word has length 23 [2022-11-18 19:53:18,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:18,218 INFO L495 AbstractCegarLoop]: Abstraction has 11952 states and 43162 transitions. [2022-11-18 19:53:18,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 27 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:18,218 INFO L276 IsEmpty]: Start isEmpty. Operand 11952 states and 43162 transitions. [2022-11-18 19:53:18,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:53:18,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:18,239 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:18,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (326)] Ended with exit code 0 [2022-11-18 19:53:18,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337,326 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:18,439 INFO L420 AbstractCegarLoop]: === Iteration 339 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:53:18,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:18,440 INFO L85 PathProgramCache]: Analyzing trace with hash -997319858, now seen corresponding path program 323 times [2022-11-18 19:53:18,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:18,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145247253] [2022-11-18 19:53:18,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:18,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:19,482 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:19,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:19,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145247253] [2022-11-18 19:53:19,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145247253] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:19,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972087293] [2022-11-18 19:53:19,483 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:53:19,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:19,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:19,484 INFO L229 MonitoredProcess]: Starting monitored process 327 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:19,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (327)] Waiting until timeout for monitored process [2022-11-18 19:53:19,904 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-18 19:53:19,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:53:19,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:53:19,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:20,274 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:20,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:20,694 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:20,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972087293] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:20,694 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:20,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 26 [2022-11-18 19:53:20,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722152982] [2022-11-18 19:53:20,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:20,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 19:53:20,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:20,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 19:53:20,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2022-11-18 19:53:20,695 INFO L87 Difference]: Start difference. First operand 11952 states and 43162 transitions. Second operand has 28 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 27 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:21,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:21,987 INFO L93 Difference]: Finished difference Result 12297 states and 43882 transitions. [2022-11-18 19:53:21,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:53:21,987 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 27 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:53:21,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:22,020 INFO L225 Difference]: With dead ends: 12297 [2022-11-18 19:53:22,020 INFO L226 Difference]: Without dead ends: 12292 [2022-11-18 19:53:22,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 26 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=109, Invalid=1013, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:53:22,021 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 152 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 1805 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 1820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:22,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 114 Invalid, 1820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1805 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 19:53:22,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12292 states. [2022-11-18 19:53:22,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12292 to 11944. [2022-11-18 19:53:22,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11944 states, 11943 states have (on average 3.611655362974127) internal successors, (43134), 11943 states have internal predecessors, (43134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:22,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11944 states to 11944 states and 43134 transitions. [2022-11-18 19:53:22,302 INFO L78 Accepts]: Start accepts. Automaton has 11944 states and 43134 transitions. Word has length 23 [2022-11-18 19:53:22,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:22,302 INFO L495 AbstractCegarLoop]: Abstraction has 11944 states and 43134 transitions. [2022-11-18 19:53:22,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 27 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:22,302 INFO L276 IsEmpty]: Start isEmpty. Operand 11944 states and 43134 transitions. [2022-11-18 19:53:22,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:53:22,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:22,321 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:22,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (327)] Ended with exit code 0 [2022-11-18 19:53:22,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 327 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable338 [2022-11-18 19:53:22,522 INFO L420 AbstractCegarLoop]: === Iteration 340 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:53:22,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:22,522 INFO L85 PathProgramCache]: Analyzing trace with hash -581213302, now seen corresponding path program 324 times [2022-11-18 19:53:22,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:22,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380747227] [2022-11-18 19:53:22,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:22,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:23,780 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:23,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:23,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380747227] [2022-11-18 19:53:23,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380747227] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:23,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094264952] [2022-11-18 19:53:23,781 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:53:23,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:23,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:23,782 INFO L229 MonitoredProcess]: Starting monitored process 328 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:23,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (328)] Waiting until timeout for monitored process [2022-11-18 19:53:24,209 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-18 19:53:24,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:53:24,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:53:24,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:24,557 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:24,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:25,097 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:25,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094264952] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:25,097 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:25,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 13] total 33 [2022-11-18 19:53:25,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328899094] [2022-11-18 19:53:25,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:25,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 19:53:25,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:25,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 19:53:25,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1082, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 19:53:25,098 INFO L87 Difference]: Start difference. First operand 11944 states and 43134 transitions. Second operand has 35 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:26,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:26,376 INFO L93 Difference]: Finished difference Result 12765 states and 45533 transitions. [2022-11-18 19:53:26,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:53:26,377 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:53:26,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:26,408 INFO L225 Difference]: With dead ends: 12765 [2022-11-18 19:53:26,408 INFO L226 Difference]: Without dead ends: 12756 [2022-11-18 19:53:26,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=134, Invalid=1272, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 19:53:26,409 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 157 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 1831 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 1846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:26,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 135 Invalid, 1846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1831 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 19:53:26,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12756 states. [2022-11-18 19:53:26,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12756 to 12150. [2022-11-18 19:53:26,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12150 states, 12149 states have (on average 3.61749938266524) internal successors, (43949), 12149 states have internal predecessors, (43949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:26,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12150 states to 12150 states and 43949 transitions. [2022-11-18 19:53:26,688 INFO L78 Accepts]: Start accepts. Automaton has 12150 states and 43949 transitions. Word has length 23 [2022-11-18 19:53:26,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:26,688 INFO L495 AbstractCegarLoop]: Abstraction has 12150 states and 43949 transitions. [2022-11-18 19:53:26,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:26,688 INFO L276 IsEmpty]: Start isEmpty. Operand 12150 states and 43949 transitions. [2022-11-18 19:53:26,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:53:26,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:26,710 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:26,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (328)] Ended with exit code 0 [2022-11-18 19:53:26,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339,328 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:26,911 INFO L420 AbstractCegarLoop]: === Iteration 341 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:53:26,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:26,911 INFO L85 PathProgramCache]: Analyzing trace with hash 277661228, now seen corresponding path program 325 times [2022-11-18 19:53:26,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:26,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327729725] [2022-11-18 19:53:26,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:26,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:26,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:28,345 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:28,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:28,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327729725] [2022-11-18 19:53:28,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327729725] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:28,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654733153] [2022-11-18 19:53:28,345 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:53:28,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:28,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:28,346 INFO L229 MonitoredProcess]: Starting monitored process 329 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:28,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (329)] Waiting until timeout for monitored process [2022-11-18 19:53:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:28,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:53:28,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:29,100 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:29,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:29,628 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:29,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654733153] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:29,628 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:29,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 13] total 32 [2022-11-18 19:53:29,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6578071] [2022-11-18 19:53:29,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:29,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 19:53:29,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:29,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 19:53:29,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1019, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:53:29,629 INFO L87 Difference]: Start difference. First operand 12150 states and 43949 transitions. Second operand has 34 states, 33 states have (on average 1.696969696969697) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:30,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:30,856 INFO L93 Difference]: Finished difference Result 12745 states and 45459 transitions. [2022-11-18 19:53:30,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:53:30,856 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.696969696969697) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:53:30,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:30,896 INFO L225 Difference]: With dead ends: 12745 [2022-11-18 19:53:30,896 INFO L226 Difference]: Without dead ends: 12740 [2022-11-18 19:53:30,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=126, Invalid=1206, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 19:53:30,897 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 162 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:30,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 129 Invalid, 1808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1792 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 19:53:30,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12740 states. [2022-11-18 19:53:31,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12740 to 12142. [2022-11-18 19:53:31,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12142 states, 12141 states have (on average 3.616917881558356) internal successors, (43913), 12141 states have internal predecessors, (43913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:31,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12142 states to 12142 states and 43913 transitions. [2022-11-18 19:53:31,386 INFO L78 Accepts]: Start accepts. Automaton has 12142 states and 43913 transitions. Word has length 23 [2022-11-18 19:53:31,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:31,386 INFO L495 AbstractCegarLoop]: Abstraction has 12142 states and 43913 transitions. [2022-11-18 19:53:31,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.696969696969697) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:31,387 INFO L276 IsEmpty]: Start isEmpty. Operand 12142 states and 43913 transitions. [2022-11-18 19:53:31,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:53:31,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:31,414 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:31,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (329)] Ended with exit code 0 [2022-11-18 19:53:31,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340,329 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:31,614 INFO L420 AbstractCegarLoop]: === Iteration 342 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:53:31,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:31,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1960014142, now seen corresponding path program 326 times [2022-11-18 19:53:31,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:31,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177352924] [2022-11-18 19:53:31,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:31,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:33,114 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:33,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:33,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177352924] [2022-11-18 19:53:33,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177352924] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:33,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349799291] [2022-11-18 19:53:33,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:53:33,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:33,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:33,115 INFO L229 MonitoredProcess]: Starting monitored process 330 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:33,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (330)] Waiting until timeout for monitored process [2022-11-18 19:53:33,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:53:33,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:53:33,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:53:33,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:33,892 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:33,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:34,435 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:34,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349799291] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:34,436 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:34,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 13] total 31 [2022-11-18 19:53:34,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589937038] [2022-11-18 19:53:34,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:34,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-18 19:53:34,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:34,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-18 19:53:34,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 19:53:34,437 INFO L87 Difference]: Start difference. First operand 12142 states and 43913 transitions. Second operand has 33 states, 32 states have (on average 1.71875) internal successors, (55), 32 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:35,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:35,882 INFO L93 Difference]: Finished difference Result 12709 states and 45295 transitions. [2022-11-18 19:53:35,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:53:35,882 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.71875) internal successors, (55), 32 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:53:35,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:35,921 INFO L225 Difference]: With dead ends: 12709 [2022-11-18 19:53:35,921 INFO L226 Difference]: Without dead ends: 12696 [2022-11-18 19:53:35,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=126, Invalid=1206, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 19:53:35,921 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 146 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2159 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 2171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:35,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 158 Invalid, 2171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2159 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 19:53:35,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12696 states. [2022-11-18 19:53:36,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12696 to 12136. [2022-11-18 19:53:36,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12136 states, 12135 states have (on average 3.616151627523692) internal successors, (43882), 12135 states have internal predecessors, (43882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:36,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12136 states to 12136 states and 43882 transitions. [2022-11-18 19:53:36,324 INFO L78 Accepts]: Start accepts. Automaton has 12136 states and 43882 transitions. Word has length 23 [2022-11-18 19:53:36,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:36,324 INFO L495 AbstractCegarLoop]: Abstraction has 12136 states and 43882 transitions. [2022-11-18 19:53:36,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.71875) internal successors, (55), 32 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:36,324 INFO L276 IsEmpty]: Start isEmpty. Operand 12136 states and 43882 transitions. [2022-11-18 19:53:36,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:53:36,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:36,348 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:36,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (330)] Ended with exit code 0 [2022-11-18 19:53:36,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341,330 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:36,548 INFO L420 AbstractCegarLoop]: === Iteration 343 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:53:36,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:36,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1753167222, now seen corresponding path program 327 times [2022-11-18 19:53:36,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:36,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055327782] [2022-11-18 19:53:36,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:36,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:37,942 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:37,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:37,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055327782] [2022-11-18 19:53:37,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055327782] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:37,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330179583] [2022-11-18 19:53:37,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:53:37,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:37,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:37,943 INFO L229 MonitoredProcess]: Starting monitored process 331 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:37,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (331)] Waiting until timeout for monitored process [2022-11-18 19:53:38,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-18 19:53:38,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:53:38,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:53:38,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:38,726 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:38,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:39,250 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:39,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330179583] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:39,250 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:39,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 13] total 29 [2022-11-18 19:53:39,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310182222] [2022-11-18 19:53:39,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:39,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 19:53:39,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:39,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 19:53:39,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=842, Unknown=0, NotChecked=0, Total=930 [2022-11-18 19:53:39,251 INFO L87 Difference]: Start difference. First operand 12136 states and 43882 transitions. Second operand has 31 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 30 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:40,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:40,589 INFO L93 Difference]: Finished difference Result 12598 states and 44952 transitions. [2022-11-18 19:53:40,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:53:40,590 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 30 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:53:40,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:40,624 INFO L225 Difference]: With dead ends: 12598 [2022-11-18 19:53:40,624 INFO L226 Difference]: Without dead ends: 12564 [2022-11-18 19:53:40,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 22 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=133, Invalid=1199, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 19:53:40,625 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 148 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 1821 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:40,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 135 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1821 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 19:53:40,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12564 states. [2022-11-18 19:53:40,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12564 to 12098. [2022-11-18 19:53:40,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12098 states, 12097 states have (on average 3.61585517070348) internal successors, (43741), 12097 states have internal predecessors, (43741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:41,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12098 states to 12098 states and 43741 transitions. [2022-11-18 19:53:41,004 INFO L78 Accepts]: Start accepts. Automaton has 12098 states and 43741 transitions. Word has length 23 [2022-11-18 19:53:41,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:41,004 INFO L495 AbstractCegarLoop]: Abstraction has 12098 states and 43741 transitions. [2022-11-18 19:53:41,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 30 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:41,004 INFO L276 IsEmpty]: Start isEmpty. Operand 12098 states and 43741 transitions. [2022-11-18 19:53:41,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:53:41,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:41,027 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:41,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (331)] Ended with exit code 0 [2022-11-18 19:53:41,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 331 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable342 [2022-11-18 19:53:41,227 INFO L420 AbstractCegarLoop]: === Iteration 344 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:53:41,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:41,227 INFO L85 PathProgramCache]: Analyzing trace with hash 364120002, now seen corresponding path program 328 times [2022-11-18 19:53:41,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:41,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489619356] [2022-11-18 19:53:41,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:41,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:42,734 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:42,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:42,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489619356] [2022-11-18 19:53:42,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489619356] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:42,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785092435] [2022-11-18 19:53:42,734 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:53:42,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:42,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:42,735 INFO L229 MonitoredProcess]: Starting monitored process 332 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:42,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (332)] Waiting until timeout for monitored process [2022-11-18 19:53:43,153 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:53:43,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:53:43,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:53:43,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:43,455 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:43,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:43,948 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:43,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785092435] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:43,948 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:43,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 13] total 27 [2022-11-18 19:53:43,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314976541] [2022-11-18 19:53:43,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:43,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 19:53:43,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:43,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 19:53:43,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=734, Unknown=0, NotChecked=0, Total=812 [2022-11-18 19:53:43,949 INFO L87 Difference]: Start difference. First operand 12098 states and 43741 transitions. Second operand has 29 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:45,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:45,436 INFO L93 Difference]: Finished difference Result 12377 states and 44343 transitions. [2022-11-18 19:53:45,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:53:45,437 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:53:45,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:45,470 INFO L225 Difference]: With dead ends: 12377 [2022-11-18 19:53:45,470 INFO L226 Difference]: Without dead ends: 12372 [2022-11-18 19:53:45,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 25 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=108, Invalid=1014, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:53:45,470 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 103 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 2042 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 2053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:45,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 142 Invalid, 2053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2042 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 19:53:45,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12372 states. [2022-11-18 19:53:45,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12372 to 12092. [2022-11-18 19:53:45,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12092 states, 12091 states have (on average 3.6159126623108095) internal successors, (43720), 12091 states have internal predecessors, (43720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:45,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12092 states to 12092 states and 43720 transitions. [2022-11-18 19:53:45,814 INFO L78 Accepts]: Start accepts. Automaton has 12092 states and 43720 transitions. Word has length 23 [2022-11-18 19:53:45,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:45,815 INFO L495 AbstractCegarLoop]: Abstraction has 12092 states and 43720 transitions. [2022-11-18 19:53:45,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:45,815 INFO L276 IsEmpty]: Start isEmpty. Operand 12092 states and 43720 transitions. [2022-11-18 19:53:45,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:53:45,837 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:45,837 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:45,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (332)] Ended with exit code 0 [2022-11-18 19:53:46,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 332 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable343 [2022-11-18 19:53:46,038 INFO L420 AbstractCegarLoop]: === Iteration 345 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:53:46,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:46,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1468049970, now seen corresponding path program 329 times [2022-11-18 19:53:46,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:46,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710594893] [2022-11-18 19:53:46,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:46,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:47,439 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:47,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:47,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710594893] [2022-11-18 19:53:47,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710594893] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:47,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378694669] [2022-11-18 19:53:47,439 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:53:47,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:47,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:47,440 INFO L229 MonitoredProcess]: Starting monitored process 333 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:47,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (333)] Waiting until timeout for monitored process [2022-11-18 19:53:47,864 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-18 19:53:47,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:53:47,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:53:47,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:48,205 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:48,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:48,722 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:48,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378694669] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:48,722 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:48,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 13] total 31 [2022-11-18 19:53:48,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576801794] [2022-11-18 19:53:48,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:48,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-18 19:53:48,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:48,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-18 19:53:48,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 19:53:48,723 INFO L87 Difference]: Start difference. First operand 12092 states and 43720 transitions. Second operand has 33 states, 32 states have (on average 1.75) internal successors, (56), 32 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:49,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:49,654 INFO L93 Difference]: Finished difference Result 12709 states and 45523 transitions. [2022-11-18 19:53:49,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:53:49,654 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.75) internal successors, (56), 32 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:53:49,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:49,690 INFO L225 Difference]: With dead ends: 12709 [2022-11-18 19:53:49,690 INFO L226 Difference]: Without dead ends: 12700 [2022-11-18 19:53:49,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=121, Invalid=1139, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 19:53:49,690 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 181 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:49,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 108 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:53:49,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12700 states. [2022-11-18 19:53:49,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12700 to 12232. [2022-11-18 19:53:49,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12232 states, 12231 states have (on average 3.6199820129179954) internal successors, (44276), 12231 states have internal predecessors, (44276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:50,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12232 states to 12232 states and 44276 transitions. [2022-11-18 19:53:50,032 INFO L78 Accepts]: Start accepts. Automaton has 12232 states and 44276 transitions. Word has length 23 [2022-11-18 19:53:50,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:50,032 INFO L495 AbstractCegarLoop]: Abstraction has 12232 states and 44276 transitions. [2022-11-18 19:53:50,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.75) internal successors, (56), 32 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:50,032 INFO L276 IsEmpty]: Start isEmpty. Operand 12232 states and 44276 transitions. [2022-11-18 19:53:50,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:53:50,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:50,055 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:50,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (333)] Ended with exit code 0 [2022-11-18 19:53:50,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 333 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable344 [2022-11-18 19:53:50,255 INFO L420 AbstractCegarLoop]: === Iteration 346 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:53:50,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:50,256 INFO L85 PathProgramCache]: Analyzing trace with hash -609175440, now seen corresponding path program 330 times [2022-11-18 19:53:50,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:50,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847574757] [2022-11-18 19:53:50,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:50,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:51,435 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:51,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:51,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847574757] [2022-11-18 19:53:51,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847574757] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:51,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193024823] [2022-11-18 19:53:51,435 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:53:51,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:51,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:51,436 INFO L229 MonitoredProcess]: Starting monitored process 334 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:51,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (334)] Waiting until timeout for monitored process [2022-11-18 19:53:51,874 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-18 19:53:51,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:53:51,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:53:51,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:52,205 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:52,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:52,728 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:52,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193024823] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:52,728 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:52,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 13] total 29 [2022-11-18 19:53:52,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967474780] [2022-11-18 19:53:52,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:52,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 19:53:52,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:52,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 19:53:52,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2022-11-18 19:53:52,729 INFO L87 Difference]: Start difference. First operand 12232 states and 44276 transitions. Second operand has 31 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:53,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:53,781 INFO L93 Difference]: Finished difference Result 12689 states and 45457 transitions. [2022-11-18 19:53:53,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:53:53,781 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:53:53,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:53,821 INFO L225 Difference]: With dead ends: 12689 [2022-11-18 19:53:53,822 INFO L226 Difference]: Without dead ends: 12684 [2022-11-18 19:53:53,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=116, Invalid=1006, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:53:53,822 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 159 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:53,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 108 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:53:53,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12684 states. [2022-11-18 19:53:54,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12684 to 12226. [2022-11-18 19:53:54,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12226 states, 12225 states have (on average 3.6195501022494887) internal successors, (44249), 12225 states have internal predecessors, (44249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:54,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12226 states to 12226 states and 44249 transitions. [2022-11-18 19:53:54,241 INFO L78 Accepts]: Start accepts. Automaton has 12226 states and 44249 transitions. Word has length 23 [2022-11-18 19:53:54,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:54,241 INFO L495 AbstractCegarLoop]: Abstraction has 12226 states and 44249 transitions. [2022-11-18 19:53:54,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:54,242 INFO L276 IsEmpty]: Start isEmpty. Operand 12226 states and 44249 transitions. [2022-11-18 19:53:54,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:53:54,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:54,267 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:54,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (334)] Ended with exit code 0 [2022-11-18 19:53:54,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 334 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable345 [2022-11-18 19:53:54,468 INFO L420 AbstractCegarLoop]: === Iteration 347 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:53:54,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:54,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1448116486, now seen corresponding path program 331 times [2022-11-18 19:53:54,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:54,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82764174] [2022-11-18 19:53:54,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:54,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:55,796 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:55,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:55,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82764174] [2022-11-18 19:53:55,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82764174] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:55,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99948013] [2022-11-18 19:53:55,797 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:53:55,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:55,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:55,798 INFO L229 MonitoredProcess]: Starting monitored process 335 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:55,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (335)] Waiting until timeout for monitored process [2022-11-18 19:53:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:56,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:53:56,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:56,589 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:56,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:57,116 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:57,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99948013] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:57,116 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:57,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 13] total 30 [2022-11-18 19:53:57,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905939493] [2022-11-18 19:53:57,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:57,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 19:53:57,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:57,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 19:53:57,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=899, Unknown=0, NotChecked=0, Total=992 [2022-11-18 19:53:57,117 INFO L87 Difference]: Start difference. First operand 12226 states and 44249 transitions. Second operand has 32 states, 31 states have (on average 1.7741935483870968) internal successors, (55), 31 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:58,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:58,264 INFO L93 Difference]: Finished difference Result 12589 states and 45132 transitions. [2022-11-18 19:53:58,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:53:58,265 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.7741935483870968) internal successors, (55), 31 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:53:58,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:58,304 INFO L225 Difference]: With dead ends: 12589 [2022-11-18 19:53:58,304 INFO L226 Difference]: Without dead ends: 12576 [2022-11-18 19:53:58,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 20 SyntacticMatches, 7 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=121, Invalid=1139, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 19:53:58,304 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 169 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:58,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 127 Invalid, 1508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1495 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:53:58,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12576 states. [2022-11-18 19:53:58,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12576 to 12226. [2022-11-18 19:53:58,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12226 states, 12225 states have (on average 3.618486707566462) internal successors, (44236), 12225 states have internal predecessors, (44236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:58,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12226 states to 12226 states and 44236 transitions. [2022-11-18 19:53:58,703 INFO L78 Accepts]: Start accepts. Automaton has 12226 states and 44236 transitions. Word has length 23 [2022-11-18 19:53:58,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:58,703 INFO L495 AbstractCegarLoop]: Abstraction has 12226 states and 44236 transitions. [2022-11-18 19:53:58,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.7741935483870968) internal successors, (55), 31 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:58,704 INFO L276 IsEmpty]: Start isEmpty. Operand 12226 states and 44236 transitions. [2022-11-18 19:53:58,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:53:58,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:58,727 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:58,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (335)] Ended with exit code 0 [2022-11-18 19:53:58,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346,335 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:58,928 INFO L420 AbstractCegarLoop]: === Iteration 348 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:53:58,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:58,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1654963406, now seen corresponding path program 332 times [2022-11-18 19:53:58,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:58,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95806842] [2022-11-18 19:53:58,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:58,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:00,412 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:00,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:00,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95806842] [2022-11-18 19:54:00,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95806842] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:00,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981834484] [2022-11-18 19:54:00,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:54:00,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:00,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:00,414 INFO L229 MonitoredProcess]: Starting monitored process 336 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:00,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (336)] Waiting until timeout for monitored process [2022-11-18 19:54:00,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:54:00,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:00,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:54:00,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:01,195 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:01,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:01,723 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:01,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981834484] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:01,723 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:01,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 13] total 27 [2022-11-18 19:54:01,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298889604] [2022-11-18 19:54:01,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:01,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 19:54:01,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:01,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 19:54:01,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2022-11-18 19:54:01,724 INFO L87 Difference]: Start difference. First operand 12226 states and 44236 transitions. Second operand has 29 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 28 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:02,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:02,723 INFO L93 Difference]: Finished difference Result 12459 states and 44737 transitions. [2022-11-18 19:54:02,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:54:02,723 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 28 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:54:02,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:02,761 INFO L225 Difference]: With dead ends: 12459 [2022-11-18 19:54:02,761 INFO L226 Difference]: Without dead ends: 12454 [2022-11-18 19:54:02,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 22 SyntacticMatches, 8 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=103, Invalid=953, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 19:54:02,762 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 164 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:02,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 100 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:54:02,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12454 states. [2022-11-18 19:54:03,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12454 to 12222. [2022-11-18 19:54:03,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12222 states, 12221 states have (on average 3.618525488912528) internal successors, (44222), 12221 states have internal predecessors, (44222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:03,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12222 states to 12222 states and 44222 transitions. [2022-11-18 19:54:03,131 INFO L78 Accepts]: Start accepts. Automaton has 12222 states and 44222 transitions. Word has length 23 [2022-11-18 19:54:03,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:03,131 INFO L495 AbstractCegarLoop]: Abstraction has 12222 states and 44222 transitions. [2022-11-18 19:54:03,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 28 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:03,131 INFO L276 IsEmpty]: Start isEmpty. Operand 12222 states and 44222 transitions. [2022-11-18 19:54:03,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:54:03,156 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:03,156 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:03,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (336)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:03,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 336 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable347 [2022-11-18 19:54:03,357 INFO L420 AbstractCegarLoop]: === Iteration 349 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:54:03,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:03,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1135741706, now seen corresponding path program 333 times [2022-11-18 19:54:03,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:03,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869921952] [2022-11-18 19:54:03,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:03,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:04,712 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:04,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:04,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869921952] [2022-11-18 19:54:04,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869921952] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:04,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597743678] [2022-11-18 19:54:04,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:54:04,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:04,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:04,714 INFO L229 MonitoredProcess]: Starting monitored process 337 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:04,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (337)] Waiting until timeout for monitored process [2022-11-18 19:54:05,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 19:54:05,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:05,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:54:05,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:05,503 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:05,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:06,048 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:06,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597743678] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:06,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:06,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 13] total 31 [2022-11-18 19:54:06,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833073950] [2022-11-18 19:54:06,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:06,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-18 19:54:06,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:06,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-18 19:54:06,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 19:54:06,049 INFO L87 Difference]: Start difference. First operand 12222 states and 44222 transitions. Second operand has 33 states, 32 states have (on average 1.78125) internal successors, (57), 32 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:07,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:07,124 INFO L93 Difference]: Finished difference Result 12774 states and 45709 transitions. [2022-11-18 19:54:07,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:54:07,124 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.78125) internal successors, (57), 32 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:54:07,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:07,161 INFO L225 Difference]: With dead ends: 12774 [2022-11-18 19:54:07,161 INFO L226 Difference]: Without dead ends: 12756 [2022-11-18 19:54:07,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=139, Invalid=1193, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 19:54:07,161 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 199 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 1442 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 1460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:07,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 127 Invalid, 1460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1442 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:54:07,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12756 states. [2022-11-18 19:54:07,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12756 to 12354. [2022-11-18 19:54:07,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12354 states, 12353 states have (on average 3.6196875252974987) internal successors, (44714), 12353 states have internal predecessors, (44714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:07,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12354 states to 12354 states and 44714 transitions. [2022-11-18 19:54:07,483 INFO L78 Accepts]: Start accepts. Automaton has 12354 states and 44714 transitions. Word has length 23 [2022-11-18 19:54:07,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:07,484 INFO L495 AbstractCegarLoop]: Abstraction has 12354 states and 44714 transitions. [2022-11-18 19:54:07,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.78125) internal successors, (57), 32 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:07,484 INFO L276 IsEmpty]: Start isEmpty. Operand 12354 states and 44714 transitions. [2022-11-18 19:54:07,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:54:07,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:07,507 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:07,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (337)] Ended with exit code 0 [2022-11-18 19:54:07,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 337 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable348 [2022-11-18 19:54:07,708 INFO L420 AbstractCegarLoop]: === Iteration 350 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:54:07,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:07,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1994616236, now seen corresponding path program 334 times [2022-11-18 19:54:07,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:07,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362989579] [2022-11-18 19:54:07,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:07,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:08,799 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:08,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:08,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362989579] [2022-11-18 19:54:08,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362989579] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:08,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617590707] [2022-11-18 19:54:08,799 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:54:08,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:08,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:08,800 INFO L229 MonitoredProcess]: Starting monitored process 338 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:08,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (338)] Waiting until timeout for monitored process [2022-11-18 19:54:09,238 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:54:09,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:09,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:54:09,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:09,581 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:09,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:10,098 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:10,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617590707] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:10,098 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:10,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 13] total 30 [2022-11-18 19:54:10,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584146251] [2022-11-18 19:54:10,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:10,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 19:54:10,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:10,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 19:54:10,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=899, Unknown=0, NotChecked=0, Total=992 [2022-11-18 19:54:10,099 INFO L87 Difference]: Start difference. First operand 12354 states and 44714 transitions. Second operand has 32 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 31 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:11,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:11,200 INFO L93 Difference]: Finished difference Result 12750 states and 45600 transitions. [2022-11-18 19:54:11,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:54:11,201 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 31 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:54:11,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:11,239 INFO L225 Difference]: With dead ends: 12750 [2022-11-18 19:54:11,239 INFO L226 Difference]: Without dead ends: 12738 [2022-11-18 19:54:11,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 20 SyntacticMatches, 7 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=130, Invalid=1130, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 19:54:11,239 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 179 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:11,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 126 Invalid, 1465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1451 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:54:11,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12738 states. [2022-11-18 19:54:11,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12738 to 12322. [2022-11-18 19:54:11,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12322 states, 12321 states have (on average 3.616914211508806) internal successors, (44564), 12321 states have internal predecessors, (44564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:11,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12322 states to 12322 states and 44564 transitions. [2022-11-18 19:54:11,541 INFO L78 Accepts]: Start accepts. Automaton has 12322 states and 44564 transitions. Word has length 23 [2022-11-18 19:54:11,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:11,541 INFO L495 AbstractCegarLoop]: Abstraction has 12322 states and 44564 transitions. [2022-11-18 19:54:11,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 31 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:11,541 INFO L276 IsEmpty]: Start isEmpty. Operand 12322 states and 44564 transitions. [2022-11-18 19:54:11,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:54:11,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:11,564 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:11,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (338)] Ended with exit code 0 [2022-11-18 19:54:11,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable349,338 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:11,765 INFO L420 AbstractCegarLoop]: === Iteration 351 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:54:11,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:11,765 INFO L85 PathProgramCache]: Analyzing trace with hash -243059134, now seen corresponding path program 335 times [2022-11-18 19:54:11,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:11,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014445613] [2022-11-18 19:54:11,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:11,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:11,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:13,205 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:13,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:13,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014445613] [2022-11-18 19:54:13,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014445613] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:13,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474023920] [2022-11-18 19:54:13,205 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:54:13,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:13,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:13,206 INFO L229 MonitoredProcess]: Starting monitored process 339 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:13,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (339)] Waiting until timeout for monitored process [2022-11-18 19:54:13,643 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-18 19:54:13,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:13,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:54:13,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:14,026 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:14,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:14,557 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:14,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474023920] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:14,558 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:14,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 13] total 29 [2022-11-18 19:54:14,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393865245] [2022-11-18 19:54:14,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:14,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 19:54:14,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:14,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 19:54:14,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=842, Unknown=0, NotChecked=0, Total=930 [2022-11-18 19:54:14,559 INFO L87 Difference]: Start difference. First operand 12322 states and 44564 transitions. Second operand has 31 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:15,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:15,524 INFO L93 Difference]: Finished difference Result 12593 states and 45102 transitions. [2022-11-18 19:54:15,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:54:15,524 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:54:15,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:15,562 INFO L225 Difference]: With dead ends: 12593 [2022-11-18 19:54:15,562 INFO L226 Difference]: Without dead ends: 12588 [2022-11-18 19:54:15,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=106, Invalid=1016, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:54:15,562 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 136 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:15,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 123 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:54:15,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12588 states. [2022-11-18 19:54:15,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12588 to 12320. [2022-11-18 19:54:15,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12320 states, 12319 states have (on average 3.616933192629272) internal successors, (44557), 12319 states have internal predecessors, (44557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:15,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12320 states to 12320 states and 44557 transitions. [2022-11-18 19:54:15,938 INFO L78 Accepts]: Start accepts. Automaton has 12320 states and 44557 transitions. Word has length 23 [2022-11-18 19:54:15,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:15,939 INFO L495 AbstractCegarLoop]: Abstraction has 12320 states and 44557 transitions. [2022-11-18 19:54:15,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:15,939 INFO L276 IsEmpty]: Start isEmpty. Operand 12320 states and 44557 transitions. [2022-11-18 19:54:15,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:54:15,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:15,961 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:15,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (339)] Ended with exit code 0 [2022-11-18 19:54:16,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350,339 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:16,161 INFO L420 AbstractCegarLoop]: === Iteration 352 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:54:16,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:16,161 INFO L85 PathProgramCache]: Analyzing trace with hash 376173058, now seen corresponding path program 336 times [2022-11-18 19:54:16,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:16,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639100208] [2022-11-18 19:54:16,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:16,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:17,234 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:17,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:17,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639100208] [2022-11-18 19:54:17,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639100208] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:17,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377398939] [2022-11-18 19:54:17,234 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:54:17,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:17,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:17,235 INFO L229 MonitoredProcess]: Starting monitored process 340 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:17,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (340)] Waiting until timeout for monitored process [2022-11-18 19:54:17,676 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-18 19:54:17,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:17,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:54:17,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:18,038 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:54:18,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:18,563 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:18,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377398939] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:18,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:18,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 13] total 29 [2022-11-18 19:54:18,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724156757] [2022-11-18 19:54:18,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:18,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 19:54:18,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:18,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 19:54:18,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=839, Unknown=0, NotChecked=0, Total=930 [2022-11-18 19:54:18,564 INFO L87 Difference]: Start difference. First operand 12320 states and 44557 transitions. Second operand has 31 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:19,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:19,520 INFO L93 Difference]: Finished difference Result 12513 states and 44878 transitions. [2022-11-18 19:54:19,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:54:19,520 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:54:19,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:19,557 INFO L225 Difference]: With dead ends: 12513 [2022-11-18 19:54:19,557 INFO L226 Difference]: Without dead ends: 12504 [2022-11-18 19:54:19,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=119, Invalid=1003, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:54:19,558 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 144 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:19,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 120 Invalid, 1254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:54:19,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12504 states. [2022-11-18 19:54:19,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12504 to 12296. [2022-11-18 19:54:19,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12296 states, 12295 states have (on average 3.614884099227328) internal successors, (44445), 12295 states have internal predecessors, (44445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:19,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12296 states to 12296 states and 44445 transitions. [2022-11-18 19:54:19,909 INFO L78 Accepts]: Start accepts. Automaton has 12296 states and 44445 transitions. Word has length 23 [2022-11-18 19:54:19,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:19,909 INFO L495 AbstractCegarLoop]: Abstraction has 12296 states and 44445 transitions. [2022-11-18 19:54:19,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:19,909 INFO L276 IsEmpty]: Start isEmpty. Operand 12296 states and 44445 transitions. [2022-11-18 19:54:19,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:54:19,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:19,931 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:19,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (340)] Ended with exit code 0 [2022-11-18 19:54:20,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351,340 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:20,131 INFO L420 AbstractCegarLoop]: === Iteration 353 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:54:20,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:20,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1744042092, now seen corresponding path program 337 times [2022-11-18 19:54:20,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:20,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214865977] [2022-11-18 19:54:20,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:20,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:21,379 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:21,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:21,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214865977] [2022-11-18 19:54:21,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214865977] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:21,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743642058] [2022-11-18 19:54:21,380 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:54:21,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:21,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:21,381 INFO L229 MonitoredProcess]: Starting monitored process 341 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:21,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (341)] Waiting until timeout for monitored process [2022-11-18 19:54:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:21,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:54:21,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:22,181 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:54:22,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:22,676 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:22,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743642058] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:22,676 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:22,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 13] total 28 [2022-11-18 19:54:22,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047631205] [2022-11-18 19:54:22,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:22,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 19:54:22,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:22,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 19:54:22,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2022-11-18 19:54:22,677 INFO L87 Difference]: Start difference. First operand 12296 states and 44445 transitions. Second operand has 30 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 29 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:23,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:23,652 INFO L93 Difference]: Finished difference Result 12517 states and 44812 transitions. [2022-11-18 19:54:23,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:54:23,652 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 29 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:54:23,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:23,688 INFO L225 Difference]: With dead ends: 12517 [2022-11-18 19:54:23,688 INFO L226 Difference]: Without dead ends: 12506 [2022-11-18 19:54:23,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 22 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=118, Invalid=1004, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:54:23,689 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 144 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:23,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 121 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1337 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:54:23,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12506 states. [2022-11-18 19:54:24,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12506 to 12268. [2022-11-18 19:54:24,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12268 states, 12267 states have (on average 3.6133528980190754) internal successors, (44325), 12267 states have internal predecessors, (44325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:24,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12268 states to 12268 states and 44325 transitions. [2022-11-18 19:54:24,160 INFO L78 Accepts]: Start accepts. Automaton has 12268 states and 44325 transitions. Word has length 23 [2022-11-18 19:54:24,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:24,161 INFO L495 AbstractCegarLoop]: Abstraction has 12268 states and 44325 transitions. [2022-11-18 19:54:24,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 29 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:24,161 INFO L276 IsEmpty]: Start isEmpty. Operand 12268 states and 44325 transitions. [2022-11-18 19:54:24,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:54:24,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:24,185 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:24,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (341)] Ended with exit code 0 [2022-11-18 19:54:24,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352,341 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:24,386 INFO L420 AbstractCegarLoop]: === Iteration 354 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:54:24,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:24,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1198309186, now seen corresponding path program 338 times [2022-11-18 19:54:24,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:24,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630506724] [2022-11-18 19:54:24,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:24,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:25,687 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:25,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:25,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630506724] [2022-11-18 19:54:25,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630506724] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:25,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324996825] [2022-11-18 19:54:25,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:54:25,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:25,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:25,688 INFO L229 MonitoredProcess]: Starting monitored process 342 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:25,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (342)] Waiting until timeout for monitored process [2022-11-18 19:54:26,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:54:26,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:26,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:54:26,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:26,463 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:54:26,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:26,932 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:26,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324996825] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:26,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:26,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 13] total 26 [2022-11-18 19:54:26,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797362966] [2022-11-18 19:54:26,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:26,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 19:54:26,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:26,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 19:54:26,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2022-11-18 19:54:26,934 INFO L87 Difference]: Start difference. First operand 12268 states and 44325 transitions. Second operand has 28 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:27,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:27,831 INFO L93 Difference]: Finished difference Result 12525 states and 44750 transitions. [2022-11-18 19:54:27,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:54:27,831 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:54:27,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:27,872 INFO L225 Difference]: With dead ends: 12525 [2022-11-18 19:54:27,872 INFO L226 Difference]: Without dead ends: 12512 [2022-11-18 19:54:27,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=113, Invalid=943, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 19:54:27,872 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 136 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:27,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 91 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:54:27,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12512 states. [2022-11-18 19:54:28,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12512 to 12240. [2022-11-18 19:54:28,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12240 states, 12239 states have (on average 3.6127951630035136) internal successors, (44217), 12239 states have internal predecessors, (44217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:28,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12240 states to 12240 states and 44217 transitions. [2022-11-18 19:54:28,262 INFO L78 Accepts]: Start accepts. Automaton has 12240 states and 44217 transitions. Word has length 23 [2022-11-18 19:54:28,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:28,262 INFO L495 AbstractCegarLoop]: Abstraction has 12240 states and 44217 transitions. [2022-11-18 19:54:28,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:28,263 INFO L276 IsEmpty]: Start isEmpty. Operand 12240 states and 44217 transitions. [2022-11-18 19:54:28,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:54:28,286 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:28,286 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:28,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (342)] Ended with exit code 0 [2022-11-18 19:54:28,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable353,342 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:28,486 INFO L420 AbstractCegarLoop]: === Iteration 355 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:54:28,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:28,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1460458284, now seen corresponding path program 339 times [2022-11-18 19:54:28,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:28,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914632737] [2022-11-18 19:54:28,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:28,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:29,824 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:29,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:29,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914632737] [2022-11-18 19:54:29,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914632737] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:29,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407757163] [2022-11-18 19:54:29,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:54:29,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:29,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:29,825 INFO L229 MonitoredProcess]: Starting monitored process 343 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:29,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (343)] Waiting until timeout for monitored process [2022-11-18 19:54:30,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 19:54:30,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:30,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:54:30,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:30,665 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:54:30,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:31,142 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:31,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407757163] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:31,142 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:31,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 25 [2022-11-18 19:54:31,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995501343] [2022-11-18 19:54:31,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:31,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 19:54:31,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:31,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 19:54:31,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-11-18 19:54:31,143 INFO L87 Difference]: Start difference. First operand 12240 states and 44217 transitions. Second operand has 27 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:32,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:32,215 INFO L93 Difference]: Finished difference Result 12401 states and 44490 transitions. [2022-11-18 19:54:32,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:54:32,216 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:54:32,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:32,255 INFO L225 Difference]: With dead ends: 12401 [2022-11-18 19:54:32,255 INFO L226 Difference]: Without dead ends: 12386 [2022-11-18 19:54:32,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=112, Invalid=944, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 19:54:32,256 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 114 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:32,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 102 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1281 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:54:32,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12386 states. [2022-11-18 19:54:32,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12386 to 12206. [2022-11-18 19:54:32,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12206 states, 12205 states have (on average 3.614092585006145) internal successors, (44110), 12205 states have internal predecessors, (44110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:32,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12206 states to 12206 states and 44110 transitions. [2022-11-18 19:54:32,588 INFO L78 Accepts]: Start accepts. Automaton has 12206 states and 44110 transitions. Word has length 23 [2022-11-18 19:54:32,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:32,588 INFO L495 AbstractCegarLoop]: Abstraction has 12206 states and 44110 transitions. [2022-11-18 19:54:32,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:32,588 INFO L276 IsEmpty]: Start isEmpty. Operand 12206 states and 44110 transitions. [2022-11-18 19:54:32,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:54:32,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:32,610 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:32,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (343)] Ended with exit code 0 [2022-11-18 19:54:32,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 343 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable354 [2022-11-18 19:54:32,810 INFO L420 AbstractCegarLoop]: === Iteration 356 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:54:32,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:32,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1358282318, now seen corresponding path program 340 times [2022-11-18 19:54:32,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:32,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311691399] [2022-11-18 19:54:32,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:32,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:34,228 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:34,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:34,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311691399] [2022-11-18 19:54:34,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311691399] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:34,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503699888] [2022-11-18 19:54:34,228 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:54:34,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:34,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:34,229 INFO L229 MonitoredProcess]: Starting monitored process 344 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:34,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (344)] Waiting until timeout for monitored process [2022-11-18 19:54:34,694 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:54:34,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:34,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:54:34,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:35,063 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:35,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:35,605 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:35,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503699888] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:35,605 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:35,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 35 [2022-11-18 19:54:35,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631864988] [2022-11-18 19:54:35,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:35,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 19:54:35,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:35,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 19:54:35,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1214, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 19:54:35,607 INFO L87 Difference]: Start difference. First operand 12206 states and 44110 transitions. Second operand has 37 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 36 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:36,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:36,656 INFO L93 Difference]: Finished difference Result 12637 states and 45278 transitions. [2022-11-18 19:54:36,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:54:36,657 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 36 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:54:36,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:36,695 INFO L225 Difference]: With dead ends: 12637 [2022-11-18 19:54:36,695 INFO L226 Difference]: Without dead ends: 12632 [2022-11-18 19:54:36,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=142, Invalid=1418, Unknown=0, NotChecked=0, Total=1560 [2022-11-18 19:54:36,696 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 222 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:36,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 136 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:54:36,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12632 states. [2022-11-18 19:54:36,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12632 to 12408. [2022-11-18 19:54:36,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12408 states, 12407 states have (on average 3.6186830015313936) internal successors, (44897), 12407 states have internal predecessors, (44897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:37,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12408 states to 12408 states and 44897 transitions. [2022-11-18 19:54:37,029 INFO L78 Accepts]: Start accepts. Automaton has 12408 states and 44897 transitions. Word has length 23 [2022-11-18 19:54:37,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:37,029 INFO L495 AbstractCegarLoop]: Abstraction has 12408 states and 44897 transitions. [2022-11-18 19:54:37,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 36 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:37,029 INFO L276 IsEmpty]: Start isEmpty. Operand 12408 states and 44897 transitions. [2022-11-18 19:54:37,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:54:37,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:37,052 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:37,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (344)] Ended with exit code 0 [2022-11-18 19:54:37,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 344 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable355 [2022-11-18 19:54:37,252 INFO L420 AbstractCegarLoop]: === Iteration 357 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:54:37,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:37,253 INFO L85 PathProgramCache]: Analyzing trace with hash -2077810448, now seen corresponding path program 341 times [2022-11-18 19:54:37,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:37,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260858369] [2022-11-18 19:54:37,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:37,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:38,398 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:38,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:38,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260858369] [2022-11-18 19:54:38,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260858369] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:38,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251861438] [2022-11-18 19:54:38,398 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:54:38,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:38,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:38,399 INFO L229 MonitoredProcess]: Starting monitored process 345 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:38,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (345)] Waiting until timeout for monitored process [2022-11-18 19:54:38,834 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-18 19:54:38,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:38,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:54:38,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:39,270 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:39,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:39,815 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:39,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251861438] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:39,815 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:39,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 35 [2022-11-18 19:54:39,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223932548] [2022-11-18 19:54:39,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:39,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 19:54:39,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:39,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 19:54:39,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1214, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 19:54:39,816 INFO L87 Difference]: Start difference. First operand 12408 states and 44897 transitions. Second operand has 37 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 36 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:40,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:40,862 INFO L93 Difference]: Finished difference Result 12639 states and 45279 transitions. [2022-11-18 19:54:40,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:54:40,862 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 36 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:54:40,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:40,900 INFO L225 Difference]: With dead ends: 12639 [2022-11-18 19:54:40,900 INFO L226 Difference]: Without dead ends: 12634 [2022-11-18 19:54:40,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=133, Invalid=1349, Unknown=0, NotChecked=0, Total=1482 [2022-11-18 19:54:40,901 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 243 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:40,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 129 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:54:40,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12634 states. [2022-11-18 19:54:41,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12634 to 12398. [2022-11-18 19:54:41,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12398 states, 12397 states have (on average 3.6179720900217793) internal successors, (44852), 12397 states have internal predecessors, (44852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:41,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12398 states to 12398 states and 44852 transitions. [2022-11-18 19:54:41,283 INFO L78 Accepts]: Start accepts. Automaton has 12398 states and 44852 transitions. Word has length 23 [2022-11-18 19:54:41,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:41,284 INFO L495 AbstractCegarLoop]: Abstraction has 12398 states and 44852 transitions. [2022-11-18 19:54:41,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 36 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:41,284 INFO L276 IsEmpty]: Start isEmpty. Operand 12398 states and 44852 transitions. [2022-11-18 19:54:41,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:54:41,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:41,310 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:41,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (345)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:41,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 345 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable356 [2022-11-18 19:54:41,511 INFO L420 AbstractCegarLoop]: === Iteration 358 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:54:41,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:41,511 INFO L85 PathProgramCache]: Analyzing trace with hash -890691326, now seen corresponding path program 342 times [2022-11-18 19:54:41,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:41,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784557895] [2022-11-18 19:54:41,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:41,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:41,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:42,848 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:42,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:42,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784557895] [2022-11-18 19:54:42,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784557895] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:42,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118313329] [2022-11-18 19:54:42,848 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:54:42,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:42,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:42,849 INFO L229 MonitoredProcess]: Starting monitored process 346 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:42,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (346)] Waiting until timeout for monitored process [2022-11-18 19:54:43,297 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-18 19:54:43,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:43,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:54:43,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:43,673 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:43,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:44,215 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:44,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118313329] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:44,215 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:44,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 33 [2022-11-18 19:54:44,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897626894] [2022-11-18 19:54:44,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:44,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 19:54:44,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:44,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 19:54:44,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1082, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 19:54:44,216 INFO L87 Difference]: Start difference. First operand 12398 states and 44852 transitions. Second operand has 35 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 34 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:45,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:45,478 INFO L93 Difference]: Finished difference Result 12641 states and 45249 transitions. [2022-11-18 19:54:45,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:54:45,479 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 34 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:54:45,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:45,508 INFO L225 Difference]: With dead ends: 12641 [2022-11-18 19:54:45,508 INFO L226 Difference]: Without dead ends: 12636 [2022-11-18 19:54:45,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=134, Invalid=1348, Unknown=0, NotChecked=0, Total=1482 [2022-11-18 19:54:45,508 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 177 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 1670 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:45,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 142 Invalid, 1684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1670 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 19:54:45,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12636 states. [2022-11-18 19:54:45,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12636 to 12390. [2022-11-18 19:54:45,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12390 states, 12389 states have (on average 3.617563968036161) internal successors, (44818), 12389 states have internal predecessors, (44818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:45,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12390 states to 12390 states and 44818 transitions. [2022-11-18 19:54:45,799 INFO L78 Accepts]: Start accepts. Automaton has 12390 states and 44818 transitions. Word has length 23 [2022-11-18 19:54:45,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:45,799 INFO L495 AbstractCegarLoop]: Abstraction has 12390 states and 44818 transitions. [2022-11-18 19:54:45,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 34 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:45,799 INFO L276 IsEmpty]: Start isEmpty. Operand 12390 states and 44818 transitions. [2022-11-18 19:54:45,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:54:45,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:45,822 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:45,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (346)] Ended with exit code 0 [2022-11-18 19:54:46,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 346 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable357 [2022-11-18 19:54:46,022 INFO L420 AbstractCegarLoop]: === Iteration 359 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:54:46,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:46,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1550263088, now seen corresponding path program 343 times [2022-11-18 19:54:46,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:46,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788236410] [2022-11-18 19:54:46,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:46,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:47,100 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:47,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:47,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788236410] [2022-11-18 19:54:47,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788236410] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:47,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426969570] [2022-11-18 19:54:47,101 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:54:47,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:47,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:47,102 INFO L229 MonitoredProcess]: Starting monitored process 347 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:47,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (347)] Waiting until timeout for monitored process [2022-11-18 19:54:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:47,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 230 conjunts are in the unsatisfiable core [2022-11-18 19:54:47,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:47,884 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:47,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:48,381 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:48,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426969570] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:48,381 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:48,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2022-11-18 19:54:48,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643567266] [2022-11-18 19:54:48,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:48,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-18 19:54:48,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:48,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-18 19:54:48,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 19:54:48,382 INFO L87 Difference]: Start difference. First operand 12390 states and 44818 transitions. Second operand has 33 states, 32 states have (on average 1.65625) internal successors, (53), 32 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:49,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:49,560 INFO L93 Difference]: Finished difference Result 12643 states and 45224 transitions. [2022-11-18 19:54:49,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:54:49,561 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.65625) internal successors, (53), 32 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:54:49,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:49,598 INFO L225 Difference]: With dead ends: 12643 [2022-11-18 19:54:49,598 INFO L226 Difference]: Without dead ends: 12638 [2022-11-18 19:54:49,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=130, Invalid=1276, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 19:54:49,599 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 201 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:49,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 126 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:54:49,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12638 states. [2022-11-18 19:54:49,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12638 to 12382. [2022-11-18 19:54:49,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12382 states, 12381 states have (on average 3.617316856473629) internal successors, (44786), 12381 states have internal predecessors, (44786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:50,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12382 states to 12382 states and 44786 transitions. [2022-11-18 19:54:50,034 INFO L78 Accepts]: Start accepts. Automaton has 12382 states and 44786 transitions. Word has length 23 [2022-11-18 19:54:50,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:50,034 INFO L495 AbstractCegarLoop]: Abstraction has 12382 states and 44786 transitions. [2022-11-18 19:54:50,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.65625) internal successors, (53), 32 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:50,034 INFO L276 IsEmpty]: Start isEmpty. Operand 12382 states and 44786 transitions. [2022-11-18 19:54:50,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:54:50,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:50,062 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:50,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (347)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:50,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358,347 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e196e77e-8107-4f2a-b60e-44532e0d5917/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:50,271 INFO L420 AbstractCegarLoop]: === Iteration 360 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 19:54:50,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:50,271 INFO L85 PathProgramCache]: Analyzing trace with hash -89561406, now seen corresponding path program 344 times [2022-11-18 19:54:50,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:50,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952577633] [2022-11-18 19:54:50,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:50,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat