./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/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_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/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_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/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 0d10bf8c0e842192a13f4b6638f03cf57668d5bee07d0b49c4b595de1c605066 --- 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 20:18:17,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:18:17,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:18:17,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:18:17,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:18:17,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:18:17,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:18:17,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:18:17,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:18:17,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:18:17,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:18:17,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:18:17,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:18:17,289 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:18:17,291 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:18:17,292 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:18:17,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:18:17,294 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:18:17,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:18:17,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:18:17,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:18:17,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:18:17,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:18:17,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:18:17,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:18:17,306 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:18:17,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:18:17,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:18:17,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:18:17,309 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:18:17,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:18:17,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:18:17,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:18:17,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:18:17,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:18:17,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:18:17,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:18:17,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:18:17,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:18:17,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:18:17,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:18:17,317 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 20:18:17,338 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:18:17,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:18:17,339 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:18:17,339 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:18:17,340 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:18:17,340 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:18:17,340 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:18:17,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:18:17,341 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:18:17,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:18:17,341 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:18:17,342 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:18:17,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:18:17,342 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:18:17,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:18:17,342 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 20:18:17,343 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 20:18:17,343 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 20:18:17,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:18:17,343 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 20:18:17,343 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:18:17,344 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:18:17,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:18:17,344 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:18:17,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:18:17,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:18:17,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:18:17,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:18:17,345 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:18:17,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:18:17,346 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_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d10bf8c0e842192a13f4b6638f03cf57668d5bee07d0b49c4b595de1c605066 [2022-11-18 20:18:17,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:18:17,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:18:17,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:18:17,678 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:18:17,679 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:18:17,680 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2022-11-18 20:18:17,747 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/data/92cec2fdb/c03cc7475faa4a6cbe9a77977f61591c/FLAG4f7791bb1 [2022-11-18 20:18:18,162 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:18:18,162 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2022-11-18 20:18:18,176 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/data/92cec2fdb/c03cc7475faa4a6cbe9a77977f61591c/FLAG4f7791bb1 [2022-11-18 20:18:18,569 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/data/92cec2fdb/c03cc7475faa4a6cbe9a77977f61591c [2022-11-18 20:18:18,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:18:18,572 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:18:18,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:18:18,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:18:18,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:18:18,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:18:18" (1/1) ... [2022-11-18 20:18:18,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d3e217 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:18:18, skipping insertion in model container [2022-11-18 20:18:18,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:18:18" (1/1) ... [2022-11-18 20:18:18,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:18:18,608 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:18:18,812 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_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c[2135,2148] [2022-11-18 20:18:18,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:18:18,825 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:18:18,844 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_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c[2135,2148] [2022-11-18 20:18:18,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:18:18,858 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:18:18,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:18:18 WrapperNode [2022-11-18 20:18:18,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:18:18,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:18:18,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:18:18,861 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:18:18,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:18:18" (1/1) ... [2022-11-18 20:18:18,893 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:18:18" (1/1) ... [2022-11-18 20:18:18,923 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2022-11-18 20:18:18,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:18:18,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:18:18,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:18:18,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:18:18,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:18:18" (1/1) ... [2022-11-18 20:18:18,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:18:18" (1/1) ... [2022-11-18 20:18:18,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:18:18" (1/1) ... [2022-11-18 20:18:18,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:18:18" (1/1) ... [2022-11-18 20:18:18,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:18:18" (1/1) ... [2022-11-18 20:18:18,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:18:18" (1/1) ... [2022-11-18 20:18:18,965 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:18:18" (1/1) ... [2022-11-18 20:18:18,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:18:18" (1/1) ... [2022-11-18 20:18:18,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:18:18,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:18:18,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:18:18,969 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:18:18,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:18:18" (1/1) ... [2022-11-18 20:18:18,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:18:19,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:18:19,023 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:18:19,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:18:19,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:18:19,082 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:18:19,083 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:18:19,083 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:18:19,083 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:18:19,083 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:18:19,083 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:18:19,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:18:19,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:18:19,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:18:19,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:18:19,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:18:19,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:18:19,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:18:19,086 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 20:18:19,214 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:18:19,216 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:18:19,575 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:18:19,585 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:18:19,585 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 20:18:19,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:18:19 BoogieIcfgContainer [2022-11-18 20:18:19,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:18:19,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:18:19,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:18:19,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:18:19,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:18:18" (1/3) ... [2022-11-18 20:18:19,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7da4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:18:19, skipping insertion in model container [2022-11-18 20:18:19,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:18:18" (2/3) ... [2022-11-18 20:18:19,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7da4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:18:19, skipping insertion in model container [2022-11-18 20:18:19,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:18:19" (3/3) ... [2022-11-18 20:18:19,598 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-flipped-dist.wvr.c [2022-11-18 20:18:19,613 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:18:19,613 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-18 20:18:19,613 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:18:19,696 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:18:19,732 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-18 20:18:19,746 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 123 transitions, 270 flow [2022-11-18 20:18:19,749 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 123 transitions, 270 flow [2022-11-18 20:18:19,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 123 transitions, 270 flow [2022-11-18 20:18:19,819 INFO L130 PetriNetUnfolder]: 7/120 cut-off events. [2022-11-18 20:18:19,819 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 20:18:19,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 120 events. 7/120 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 113 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2022-11-18 20:18:19,828 INFO L119 LiptonReduction]: Number of co-enabled transitions 1680 [2022-11-18 20:18:24,101 INFO L134 LiptonReduction]: Checked pairs total: 1800 [2022-11-18 20:18:24,101 INFO L136 LiptonReduction]: Total number of compositions: 116 [2022-11-18 20:18:24,110 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 39 transitions, 102 flow [2022-11-18 20:18:24,151 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 211 states, 197 states have (on average 3.431472081218274) internal successors, (676), 210 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:24,171 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:18:24,179 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;@5b750669, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:18:24,179 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-18 20:18:24,182 INFO L276 IsEmpty]: Start isEmpty. Operand has 211 states, 197 states have (on average 3.431472081218274) internal successors, (676), 210 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:24,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-18 20:18:24,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:24,189 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-18 20:18:24,189 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:24,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:24,199 INFO L85 PathProgramCache]: Analyzing trace with hash 456, now seen corresponding path program 1 times [2022-11-18 20:18:24,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:24,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016169742] [2022-11-18 20:18:24,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:24,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:24,307 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 20:18:24,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:24,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016169742] [2022-11-18 20:18:24,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016169742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:24,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:24,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-18 20:18:24,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086730606] [2022-11-18 20:18:24,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:24,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:18:24,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:24,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:18:24,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:18:24,355 INFO L87 Difference]: Start difference. First operand has 211 states, 197 states have (on average 3.431472081218274) internal successors, (676), 210 states have internal predecessors, (676), 0 states have call successors, (0), 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 20:18:24,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:24,432 INFO L93 Difference]: Finished difference Result 208 states and 673 transitions. [2022-11-18 20:18:24,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:18:24,435 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 20:18:24,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:24,449 INFO L225 Difference]: With dead ends: 208 [2022-11-18 20:18:24,451 INFO L226 Difference]: Without dead ends: 208 [2022-11-18 20:18:24,454 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 20:18:24,460 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:24,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:18:24,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-18 20:18:24,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2022-11-18 20:18:24,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 197 states have (on average 3.416243654822335) internal successors, (673), 207 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:24,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 673 transitions. [2022-11-18 20:18:24,547 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 673 transitions. Word has length 1 [2022-11-18 20:18:24,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:24,548 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 673 transitions. [2022-11-18 20:18:24,548 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 20:18:24,549 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 673 transitions. [2022-11-18 20:18:24,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 20:18:24,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:24,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 20:18:24,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:18:24,552 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:24,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:24,554 INFO L85 PathProgramCache]: Analyzing trace with hash 449070, now seen corresponding path program 1 times [2022-11-18 20:18:24,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:24,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047120518] [2022-11-18 20:18:24,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:24,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:24,769 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 20:18:24,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:24,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047120518] [2022-11-18 20:18:24,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047120518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:24,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:24,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:18:24,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522037442] [2022-11-18 20:18:24,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:24,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:18:24,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:24,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:18:24,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:18:24,776 INFO L87 Difference]: Start difference. First operand 208 states and 673 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 20:18:24,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:24,847 INFO L93 Difference]: Finished difference Result 196 states and 640 transitions. [2022-11-18 20:18:24,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:18:24,847 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 20:18:24,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:24,856 INFO L225 Difference]: With dead ends: 196 [2022-11-18 20:18:24,856 INFO L226 Difference]: Without dead ends: 196 [2022-11-18 20:18:24,857 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 20:18:24,858 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:24,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:18:24,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-11-18 20:18:24,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2022-11-18 20:18:24,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 187 states have (on average 3.4224598930481283) internal successors, (640), 195 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:24,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 640 transitions. [2022-11-18 20:18:24,882 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 640 transitions. Word has length 3 [2022-11-18 20:18:24,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:24,882 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 640 transitions. [2022-11-18 20:18:24,883 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 20:18:24,883 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 640 transitions. [2022-11-18 20:18:24,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 20:18:24,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:24,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 20:18:24,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:18:24,884 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:24,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:24,886 INFO L85 PathProgramCache]: Analyzing trace with hash 449071, now seen corresponding path program 1 times [2022-11-18 20:18:24,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:24,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201672155] [2022-11-18 20:18:24,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:24,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:25,133 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 20:18:25,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:25,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201672155] [2022-11-18 20:18:25,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201672155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:25,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:25,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:18:25,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964979108] [2022-11-18 20:18:25,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:25,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:18:25,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:25,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:18:25,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:18:25,137 INFO L87 Difference]: Start difference. First operand 196 states and 640 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 20:18:25,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:25,185 INFO L93 Difference]: Finished difference Result 184 states and 607 transitions. [2022-11-18 20:18:25,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:18:25,186 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 20:18:25,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:25,189 INFO L225 Difference]: With dead ends: 184 [2022-11-18 20:18:25,190 INFO L226 Difference]: Without dead ends: 184 [2022-11-18 20:18:25,191 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 20:18:25,194 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:25,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:18:25,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-18 20:18:25,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2022-11-18 20:18:25,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 177 states have (on average 3.4293785310734464) internal successors, (607), 183 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:25,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 607 transitions. [2022-11-18 20:18:25,224 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 607 transitions. Word has length 3 [2022-11-18 20:18:25,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:25,225 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 607 transitions. [2022-11-18 20:18:25,225 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 20:18:25,225 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 607 transitions. [2022-11-18 20:18:25,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 20:18:25,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:25,226 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 20:18:25,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:18:25,226 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:25,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:25,227 INFO L85 PathProgramCache]: Analyzing trace with hash 431565137, now seen corresponding path program 1 times [2022-11-18 20:18:25,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:25,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485123400] [2022-11-18 20:18:25,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:25,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:25,321 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 20:18:25,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:25,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485123400] [2022-11-18 20:18:25,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485123400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:25,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:25,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:18:25,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10988302] [2022-11-18 20:18:25,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:25,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:18:25,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:25,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:18:25,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:18:25,324 INFO L87 Difference]: Start difference. First operand 184 states and 607 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 20:18:25,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:25,361 INFO L93 Difference]: Finished difference Result 172 states and 574 transitions. [2022-11-18 20:18:25,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:18:25,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 20:18:25,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:25,363 INFO L225 Difference]: With dead ends: 172 [2022-11-18 20:18:25,364 INFO L226 Difference]: Without dead ends: 172 [2022-11-18 20:18:25,364 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 20:18:25,365 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:25,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:18:25,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-11-18 20:18:25,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2022-11-18 20:18:25,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 167 states have (on average 3.437125748502994) internal successors, (574), 171 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:25,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 574 transitions. [2022-11-18 20:18:25,374 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 574 transitions. Word has length 5 [2022-11-18 20:18:25,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:25,375 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 574 transitions. [2022-11-18 20:18:25,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 20:18:25,375 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 574 transitions. [2022-11-18 20:18:25,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 20:18:25,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:25,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 20:18:25,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:18:25,376 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:25,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:25,377 INFO L85 PathProgramCache]: Analyzing trace with hash 431565138, now seen corresponding path program 1 times [2022-11-18 20:18:25,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:25,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831415191] [2022-11-18 20:18:25,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:25,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:25,450 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 20:18:25,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:25,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831415191] [2022-11-18 20:18:25,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831415191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:25,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:25,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:18:25,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563869945] [2022-11-18 20:18:25,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:25,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:18:25,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:25,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:18:25,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:18:25,453 INFO L87 Difference]: Start difference. First operand 172 states and 574 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 20:18:25,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:25,502 INFO L93 Difference]: Finished difference Result 160 states and 541 transitions. [2022-11-18 20:18:25,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:18:25,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 20:18:25,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:25,513 INFO L225 Difference]: With dead ends: 160 [2022-11-18 20:18:25,514 INFO L226 Difference]: Without dead ends: 160 [2022-11-18 20:18:25,514 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 20:18:25,515 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:25,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 3 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:18:25,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-11-18 20:18:25,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2022-11-18 20:18:25,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 157 states have (on average 3.445859872611465) internal successors, (541), 159 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:25,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 541 transitions. [2022-11-18 20:18:25,524 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 541 transitions. Word has length 5 [2022-11-18 20:18:25,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:25,524 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 541 transitions. [2022-11-18 20:18:25,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 20:18:25,524 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 541 transitions. [2022-11-18 20:18:25,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 20:18:25,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:25,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:25,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:18:25,526 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:25,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:25,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1877722084, now seen corresponding path program 1 times [2022-11-18 20:18:25,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:25,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792862890] [2022-11-18 20:18:25,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:25,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:25,753 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 20:18:25,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:25,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792862890] [2022-11-18 20:18:25,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792862890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:25,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:25,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:18:25,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547655962] [2022-11-18 20:18:25,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:25,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:18:25,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:25,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:18:25,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:18:25,757 INFO L87 Difference]: Start difference. First operand 160 states and 541 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:25,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:25,806 INFO L93 Difference]: Finished difference Result 133 states and 433 transitions. [2022-11-18 20:18:25,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:18:25,807 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2022-11-18 20:18:25,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:25,808 INFO L225 Difference]: With dead ends: 133 [2022-11-18 20:18:25,808 INFO L226 Difference]: Without dead ends: 133 [2022-11-18 20:18:25,809 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 20:18:25,816 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:25,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:18:25,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-18 20:18:25,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2022-11-18 20:18:25,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 131 states have (on average 3.3053435114503817) internal successors, (433), 132 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:25,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 433 transitions. [2022-11-18 20:18:25,823 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 433 transitions. Word has length 7 [2022-11-18 20:18:25,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:25,824 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 433 transitions. [2022-11-18 20:18:25,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:25,824 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 433 transitions. [2022-11-18 20:18:25,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 20:18:25,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:25,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:25,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:18:25,825 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:25,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:25,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1877722085, now seen corresponding path program 1 times [2022-11-18 20:18:25,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:25,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260339608] [2022-11-18 20:18:25,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:25,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:26,003 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 20:18:26,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:26,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260339608] [2022-11-18 20:18:26,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260339608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:26,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:26,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:18:26,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532469791] [2022-11-18 20:18:26,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:26,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:18:26,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:26,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:18:26,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:18:26,008 INFO L87 Difference]: Start difference. First operand 133 states and 433 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:26,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:26,051 INFO L93 Difference]: Finished difference Result 106 states and 325 transitions. [2022-11-18 20:18:26,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:18:26,052 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2022-11-18 20:18:26,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:26,053 INFO L225 Difference]: With dead ends: 106 [2022-11-18 20:18:26,053 INFO L226 Difference]: Without dead ends: 106 [2022-11-18 20:18:26,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:18:26,055 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:26,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:18:26,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-18 20:18:26,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-11-18 20:18:26,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 3.0952380952380953) internal successors, (325), 105 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:26,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 325 transitions. [2022-11-18 20:18:26,061 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 325 transitions. Word has length 7 [2022-11-18 20:18:26,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:26,061 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 325 transitions. [2022-11-18 20:18:26,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:26,061 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 325 transitions. [2022-11-18 20:18:26,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 20:18:26,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:26,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:26,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:18:26,064 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:26,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:26,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1617239466, now seen corresponding path program 1 times [2022-11-18 20:18:26,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:26,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905784101] [2022-11-18 20:18:26,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:26,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:26,510 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 20:18:26,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:26,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905784101] [2022-11-18 20:18:26,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905784101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:26,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:26,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:18:26,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21225742] [2022-11-18 20:18:26,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:26,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:18:26,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:26,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:18:26,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:18:26,513 INFO L87 Difference]: Start difference. First operand 106 states and 325 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:26,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:26,584 INFO L93 Difference]: Finished difference Result 203 states and 630 transitions. [2022-11-18 20:18:26,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:18:26,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 20:18:26,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:26,587 INFO L225 Difference]: With dead ends: 203 [2022-11-18 20:18:26,587 INFO L226 Difference]: Without dead ends: 196 [2022-11-18 20:18:26,588 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 20:18:26,588 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:26,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:18:26,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-11-18 20:18:26,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2022-11-18 20:18:26,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 3.1384615384615384) internal successors, (612), 195 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:26,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 612 transitions. [2022-11-18 20:18:26,599 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 612 transitions. Word has length 19 [2022-11-18 20:18:26,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:26,600 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 612 transitions. [2022-11-18 20:18:26,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:26,600 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 612 transitions. [2022-11-18 20:18:26,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 20:18:26,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:26,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:26,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:18:26,603 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:26,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:26,603 INFO L85 PathProgramCache]: Analyzing trace with hash -848238168, now seen corresponding path program 1 times [2022-11-18 20:18:26,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:26,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030433321] [2022-11-18 20:18:26,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:26,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:26,761 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 20:18:26,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:26,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030433321] [2022-11-18 20:18:26,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030433321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:26,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:26,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:18:26,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110284827] [2022-11-18 20:18:26,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:26,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:18:26,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:26,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:18:26,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:18:26,765 INFO L87 Difference]: Start difference. First operand 196 states and 612 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 20:18:26,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:26,926 INFO L93 Difference]: Finished difference Result 310 states and 837 transitions. [2022-11-18 20:18:26,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:18:26,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 20 [2022-11-18 20:18:26,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:26,929 INFO L225 Difference]: With dead ends: 310 [2022-11-18 20:18:26,929 INFO L226 Difference]: Without dead ends: 238 [2022-11-18 20:18:26,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 20:18:26,930 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 44 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:26,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 16 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:18:26,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-18 20:18:26,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 206. [2022-11-18 20:18:26,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 3.102439024390244) internal successors, (636), 205 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:26,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 636 transitions. [2022-11-18 20:18:26,940 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 636 transitions. Word has length 20 [2022-11-18 20:18:26,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:26,940 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 636 transitions. [2022-11-18 20:18:26,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 20:18:26,940 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 636 transitions. [2022-11-18 20:18:26,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 20:18:26,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:26,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:26,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:18:26,942 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:26,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:26,943 INFO L85 PathProgramCache]: Analyzing trace with hash 305648077, now seen corresponding path program 1 times [2022-11-18 20:18:26,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:26,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194322165] [2022-11-18 20:18:26,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:26,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:27,161 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 20:18:27,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:27,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194322165] [2022-11-18 20:18:27,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194322165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:27,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:27,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:18:27,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993520637] [2022-11-18 20:18:27,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:27,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:18:27,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:27,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:18:27,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:18:27,164 INFO L87 Difference]: Start difference. First operand 206 states and 636 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 20:18:27,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:27,310 INFO L93 Difference]: Finished difference Result 258 states and 748 transitions. [2022-11-18 20:18:27,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:18:27,311 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 20 [2022-11-18 20:18:27,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:27,313 INFO L225 Difference]: With dead ends: 258 [2022-11-18 20:18:27,313 INFO L226 Difference]: Without dead ends: 252 [2022-11-18 20:18:27,313 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 20:18:27,314 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 40 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:27,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 15 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:18:27,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-11-18 20:18:27,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 220. [2022-11-18 20:18:27,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 3.136986301369863) internal successors, (687), 219 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:27,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 687 transitions. [2022-11-18 20:18:27,325 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 687 transitions. Word has length 20 [2022-11-18 20:18:27,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:27,326 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 687 transitions. [2022-11-18 20:18:27,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 20:18:27,326 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 687 transitions. [2022-11-18 20:18:27,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 20:18:27,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:27,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:27,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:18:27,328 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:27,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:27,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1155126395, now seen corresponding path program 2 times [2022-11-18 20:18:27,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:27,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970003190] [2022-11-18 20:18:27,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:27,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:27,503 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 20:18:27,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:27,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970003190] [2022-11-18 20:18:27,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970003190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:27,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:27,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:18:27,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458002791] [2022-11-18 20:18:27,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:27,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:18:27,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:27,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:18:27,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:18:27,508 INFO L87 Difference]: Start difference. First operand 220 states and 687 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 20:18:27,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:27,670 INFO L93 Difference]: Finished difference Result 280 states and 819 transitions. [2022-11-18 20:18:27,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:18:27,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 20 [2022-11-18 20:18:27,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:27,673 INFO L225 Difference]: With dead ends: 280 [2022-11-18 20:18:27,673 INFO L226 Difference]: Without dead ends: 270 [2022-11-18 20:18:27,673 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 20:18:27,674 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 39 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:27,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 17 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:18:27,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-11-18 20:18:27,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 236. [2022-11-18 20:18:27,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 3.1829787234042555) internal successors, (748), 235 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:27,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 748 transitions. [2022-11-18 20:18:27,688 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 748 transitions. Word has length 20 [2022-11-18 20:18:27,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:27,689 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 748 transitions. [2022-11-18 20:18:27,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 20:18:27,689 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 748 transitions. [2022-11-18 20:18:27,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 20:18:27,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:27,690 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:27,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:18:27,691 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:27,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:27,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1928882118, now seen corresponding path program 2 times [2022-11-18 20:18:27,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:27,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738243971] [2022-11-18 20:18:27,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:27,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:27,854 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 20:18:27,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:27,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738243971] [2022-11-18 20:18:27,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738243971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:27,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:27,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:18:27,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69577478] [2022-11-18 20:18:27,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:27,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:18:27,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:27,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:18:27,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:18:27,856 INFO L87 Difference]: Start difference. First operand 236 states and 748 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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 20:18:27,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:27,954 INFO L93 Difference]: Finished difference Result 280 states and 871 transitions. [2022-11-18 20:18:27,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:18:27,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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 20 [2022-11-18 20:18:27,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:27,957 INFO L225 Difference]: With dead ends: 280 [2022-11-18 20:18:27,957 INFO L226 Difference]: Without dead ends: 274 [2022-11-18 20:18:27,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 20:18:27,959 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 19 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:27,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 11 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:18:27,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-11-18 20:18:27,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 236. [2022-11-18 20:18:27,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 3.1829787234042555) internal successors, (748), 235 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:27,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 748 transitions. [2022-11-18 20:18:27,971 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 748 transitions. Word has length 20 [2022-11-18 20:18:27,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:27,971 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 748 transitions. [2022-11-18 20:18:27,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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 20:18:27,971 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 748 transitions. [2022-11-18 20:18:27,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 20:18:27,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:27,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:27,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:18:27,973 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:27,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:27,974 INFO L85 PathProgramCache]: Analyzing trace with hash 131930759, now seen corresponding path program 3 times [2022-11-18 20:18:27,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:27,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749952179] [2022-11-18 20:18:27,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:27,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:28,137 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 20:18:28,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:28,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749952179] [2022-11-18 20:18:28,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749952179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:28,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:28,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:18:28,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571967186] [2022-11-18 20:18:28,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:28,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:18:28,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:28,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:18:28,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:18:28,139 INFO L87 Difference]: Start difference. First operand 236 states and 748 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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 20:18:28,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:28,242 INFO L93 Difference]: Finished difference Result 430 states and 1311 transitions. [2022-11-18 20:18:28,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:18:28,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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 20 [2022-11-18 20:18:28,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:28,246 INFO L225 Difference]: With dead ends: 430 [2022-11-18 20:18:28,246 INFO L226 Difference]: Without dead ends: 422 [2022-11-18 20:18:28,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 20:18:28,247 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 28 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:28,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 13 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:18:28,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-11-18 20:18:28,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 298. [2022-11-18 20:18:28,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 3.3703703703703702) internal successors, (1001), 297 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:28,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 1001 transitions. [2022-11-18 20:18:28,260 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 1001 transitions. Word has length 20 [2022-11-18 20:18:28,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:28,261 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 1001 transitions. [2022-11-18 20:18:28,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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 20:18:28,261 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 1001 transitions. [2022-11-18 20:18:28,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 20:18:28,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:28,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:28,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:18:28,263 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:28,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:28,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1462435905, now seen corresponding path program 4 times [2022-11-18 20:18:28,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:28,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272300862] [2022-11-18 20:18:28,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:28,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:28,368 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 20:18:28,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:28,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272300862] [2022-11-18 20:18:28,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272300862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:28,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:28,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:18:28,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216916819] [2022-11-18 20:18:28,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:28,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:18:28,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:28,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:18:28,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:18:28,371 INFO L87 Difference]: Start difference. First operand 298 states and 1001 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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 20:18:28,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:28,468 INFO L93 Difference]: Finished difference Result 504 states and 1628 transitions. [2022-11-18 20:18:28,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:18:28,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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 20 [2022-11-18 20:18:28,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:28,472 INFO L225 Difference]: With dead ends: 504 [2022-11-18 20:18:28,473 INFO L226 Difference]: Without dead ends: 494 [2022-11-18 20:18:28,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 20:18:28,474 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 24 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:28,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 13 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:18:28,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2022-11-18 20:18:28,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 374. [2022-11-18 20:18:28,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 3.525469168900804) internal successors, (1315), 373 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:28,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1315 transitions. [2022-11-18 20:18:28,491 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1315 transitions. Word has length 20 [2022-11-18 20:18:28,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:28,491 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 1315 transitions. [2022-11-18 20:18:28,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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 20:18:28,492 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1315 transitions. [2022-11-18 20:18:28,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 20:18:28,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:28,493 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:28,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:18:28,494 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:28,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:28,494 INFO L85 PathProgramCache]: Analyzing trace with hash 473593361, now seen corresponding path program 5 times [2022-11-18 20:18:28,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:28,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469515327] [2022-11-18 20:18:28,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:28,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:28,604 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 20:18:28,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:28,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469515327] [2022-11-18 20:18:28,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469515327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:28,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:28,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:18:28,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649422483] [2022-11-18 20:18:28,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:28,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:18:28,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:28,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:18:28,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:18:28,606 INFO L87 Difference]: Start difference. First operand 374 states and 1315 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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 20:18:28,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:28,699 INFO L93 Difference]: Finished difference Result 440 states and 1460 transitions. [2022-11-18 20:18:28,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:18:28,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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 20 [2022-11-18 20:18:28,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:28,703 INFO L225 Difference]: With dead ends: 440 [2022-11-18 20:18:28,703 INFO L226 Difference]: Without dead ends: 416 [2022-11-18 20:18:28,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 20:18:28,704 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 27 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:28,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 13 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:18:28,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2022-11-18 20:18:28,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 312. [2022-11-18 20:18:28,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 3.4115755627009645) internal successors, (1061), 311 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:28,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 1061 transitions. [2022-11-18 20:18:28,718 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 1061 transitions. Word has length 20 [2022-11-18 20:18:28,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:28,718 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 1061 transitions. [2022-11-18 20:18:28,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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 20:18:28,719 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 1061 transitions. [2022-11-18 20:18:28,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 20:18:28,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:28,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:28,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:18:28,721 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:28,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:28,721 INFO L85 PathProgramCache]: Analyzing trace with hash -838153349, now seen corresponding path program 6 times [2022-11-18 20:18:28,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:28,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345184844] [2022-11-18 20:18:28,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:28,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:28,877 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 20:18:28,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:28,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345184844] [2022-11-18 20:18:28,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345184844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:28,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:28,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:18:28,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810028620] [2022-11-18 20:18:28,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:28,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:18:28,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:28,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:18:28,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:18:28,879 INFO L87 Difference]: Start difference. First operand 312 states and 1061 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 20:18:29,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:29,041 INFO L93 Difference]: Finished difference Result 382 states and 1210 transitions. [2022-11-18 20:18:29,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:18:29,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 20 [2022-11-18 20:18:29,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:29,045 INFO L225 Difference]: With dead ends: 382 [2022-11-18 20:18:29,045 INFO L226 Difference]: Without dead ends: 374 [2022-11-18 20:18:29,045 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 20:18:29,046 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 35 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:29,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 15 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:18:29,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-11-18 20:18:29,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 304. [2022-11-18 20:18:29,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 3.382838283828383) internal successors, (1025), 303 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:29,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 1025 transitions. [2022-11-18 20:18:29,062 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 1025 transitions. Word has length 20 [2022-11-18 20:18:29,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:29,062 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 1025 transitions. [2022-11-18 20:18:29,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 20:18:29,063 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 1025 transitions. [2022-11-18 20:18:29,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 20:18:29,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:29,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:29,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:18:29,066 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:29,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:29,068 INFO L85 PathProgramCache]: Analyzing trace with hash 3167083, now seen corresponding path program 7 times [2022-11-18 20:18:29,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:29,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245728097] [2022-11-18 20:18:29,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:29,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:29,193 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 20:18:29,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:29,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245728097] [2022-11-18 20:18:29,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245728097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:29,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:29,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:18:29,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099710438] [2022-11-18 20:18:29,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:29,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:18:29,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:29,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:18:29,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:18:29,196 INFO L87 Difference]: Start difference. First operand 304 states and 1025 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 20:18:29,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:29,300 INFO L93 Difference]: Finished difference Result 310 states and 1024 transitions. [2022-11-18 20:18:29,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:18:29,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 20 [2022-11-18 20:18:29,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:29,303 INFO L225 Difference]: With dead ends: 310 [2022-11-18 20:18:29,303 INFO L226 Difference]: Without dead ends: 296 [2022-11-18 20:18:29,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 20:18:29,304 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 19 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:29,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 16 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:18:29,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-11-18 20:18:29,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 290. [2022-11-18 20:18:29,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 3.4013840830449826) internal successors, (983), 289 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:29,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 983 transitions. [2022-11-18 20:18:29,316 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 983 transitions. Word has length 20 [2022-11-18 20:18:29,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:29,316 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 983 transitions. [2022-11-18 20:18:29,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 20:18:29,316 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 983 transitions. [2022-11-18 20:18:29,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 20:18:29,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:29,318 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:29,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:18:29,318 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:29,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:29,319 INFO L85 PathProgramCache]: Analyzing trace with hash 405919064, now seen corresponding path program 1 times [2022-11-18 20:18:29,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:29,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137044943] [2022-11-18 20:18:29,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:29,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:29,459 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 20:18:29,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:29,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137044943] [2022-11-18 20:18:29,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137044943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:29,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:29,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:18:29,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700182035] [2022-11-18 20:18:29,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:29,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:18:29,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:29,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:18:29,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:18:29,461 INFO L87 Difference]: Start difference. First operand 290 states and 983 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 20:18:29,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:29,625 INFO L93 Difference]: Finished difference Result 320 states and 1066 transitions. [2022-11-18 20:18:29,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:18:29,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 20 [2022-11-18 20:18:29,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:29,628 INFO L225 Difference]: With dead ends: 320 [2022-11-18 20:18:29,628 INFO L226 Difference]: Without dead ends: 308 [2022-11-18 20:18:29,629 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 20:18:29,629 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 27 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:29,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 16 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:18:29,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-11-18 20:18:29,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 292. [2022-11-18 20:18:29,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 3.402061855670103) internal successors, (990), 291 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:29,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 990 transitions. [2022-11-18 20:18:29,644 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 990 transitions. Word has length 20 [2022-11-18 20:18:29,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:29,645 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 990 transitions. [2022-11-18 20:18:29,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 20:18:29,645 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 990 transitions. [2022-11-18 20:18:29,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 20:18:29,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:29,647 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:29,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:18:29,648 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:29,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:29,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1851958330, now seen corresponding path program 2 times [2022-11-18 20:18:29,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:29,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747044835] [2022-11-18 20:18:29,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:29,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:29,773 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 20:18:29,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:29,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747044835] [2022-11-18 20:18:29,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747044835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:29,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:29,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:18:29,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893279552] [2022-11-18 20:18:29,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:29,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:18:29,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:29,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:18:29,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:18:29,776 INFO L87 Difference]: Start difference. First operand 292 states and 990 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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 20:18:29,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:29,859 INFO L93 Difference]: Finished difference Result 312 states and 1048 transitions. [2022-11-18 20:18:29,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:18:29,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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 20 [2022-11-18 20:18:29,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:29,863 INFO L225 Difference]: With dead ends: 312 [2022-11-18 20:18:29,863 INFO L226 Difference]: Without dead ends: 308 [2022-11-18 20:18:29,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 20:18:29,864 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 26 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:29,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 13 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:18:29,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-11-18 20:18:29,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 252. [2022-11-18 20:18:29,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 3.4262948207171315) internal successors, (860), 251 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:29,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 860 transitions. [2022-11-18 20:18:29,877 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 860 transitions. Word has length 20 [2022-11-18 20:18:29,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:29,878 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 860 transitions. [2022-11-18 20:18:29,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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 20:18:29,878 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 860 transitions. [2022-11-18 20:18:29,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-18 20:18:29,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:29,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:29,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 20:18:29,880 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:29,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:29,881 INFO L85 PathProgramCache]: Analyzing trace with hash -906357337, now seen corresponding path program 1 times [2022-11-18 20:18:29,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:29,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596211876] [2022-11-18 20:18:29,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:29,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:30,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:30,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:30,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596211876] [2022-11-18 20:18:30,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596211876] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:18:30,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245157459] [2022-11-18 20:18:30,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:30,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:30,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:18:30,019 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:18:30,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:18:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:30,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:18:30,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:18:30,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:30,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:18:30,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:30,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245157459] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 20:18:30,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:18:30,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 6 [2022-11-18 20:18:30,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163291209] [2022-11-18 20:18:30,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:30,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:18:30,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:30,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:18:30,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:18:30,385 INFO L87 Difference]: Start difference. First operand 252 states and 860 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:30,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:30,485 INFO L93 Difference]: Finished difference Result 304 states and 983 transitions. [2022-11-18 20:18:30,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:18:30,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2022-11-18 20:18:30,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:30,488 INFO L225 Difference]: With dead ends: 304 [2022-11-18 20:18:30,488 INFO L226 Difference]: Without dead ends: 304 [2022-11-18 20:18:30,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:18:30,489 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 23 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:30,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 15 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:18:30,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-11-18 20:18:30,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 220. [2022-11-18 20:18:30,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 3.2648401826484017) internal successors, (715), 219 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:30,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 715 transitions. [2022-11-18 20:18:30,500 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 715 transitions. Word has length 21 [2022-11-18 20:18:30,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:30,501 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 715 transitions. [2022-11-18 20:18:30,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:30,501 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 715 transitions. [2022-11-18 20:18:30,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-18 20:18:30,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:30,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:30,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:18:30,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:30,710 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:30,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:30,710 INFO L85 PathProgramCache]: Analyzing trace with hash 2007152895, now seen corresponding path program 2 times [2022-11-18 20:18:30,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:30,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537340178] [2022-11-18 20:18:30,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:30,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:30,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:30,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:30,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537340178] [2022-11-18 20:18:30,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537340178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:30,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:30,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:18:30,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334548668] [2022-11-18 20:18:30,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:30,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:18:30,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:30,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:18:30,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:18:30,846 INFO L87 Difference]: Start difference. First operand 220 states and 715 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:31,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:31,014 INFO L93 Difference]: Finished difference Result 290 states and 872 transitions. [2022-11-18 20:18:31,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:18:31,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2022-11-18 20:18:31,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:31,017 INFO L225 Difference]: With dead ends: 290 [2022-11-18 20:18:31,017 INFO L226 Difference]: Without dead ends: 284 [2022-11-18 20:18:31,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 20:18:31,018 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 26 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:31,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 15 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:18:31,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-18 20:18:31,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 214. [2022-11-18 20:18:31,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 3.2347417840375585) internal successors, (689), 213 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:31,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 689 transitions. [2022-11-18 20:18:31,032 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 689 transitions. Word has length 21 [2022-11-18 20:18:31,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:31,034 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 689 transitions. [2022-11-18 20:18:31,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:31,035 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 689 transitions. [2022-11-18 20:18:31,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-18 20:18:31,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:31,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:31,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 20:18:31,036 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:31,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:31,037 INFO L85 PathProgramCache]: Analyzing trace with hash -972153307, now seen corresponding path program 3 times [2022-11-18 20:18:31,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:31,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736099565] [2022-11-18 20:18:31,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:31,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:31,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:31,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:31,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736099565] [2022-11-18 20:18:31,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736099565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:31,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:31,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:18:31,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054513492] [2022-11-18 20:18:31,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:31,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:18:31,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:31,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:18:31,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:18:31,179 INFO L87 Difference]: Start difference. First operand 214 states and 689 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:31,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:31,324 INFO L93 Difference]: Finished difference Result 226 states and 707 transitions. [2022-11-18 20:18:31,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:18:31,325 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2022-11-18 20:18:31,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:31,326 INFO L225 Difference]: With dead ends: 226 [2022-11-18 20:18:31,326 INFO L226 Difference]: Without dead ends: 214 [2022-11-18 20:18:31,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 20:18:31,327 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 20 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:31,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 19 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:18:31,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-11-18 20:18:31,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 212. [2022-11-18 20:18:31,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 3.203791469194313) internal successors, (676), 211 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:31,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 676 transitions. [2022-11-18 20:18:31,336 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 676 transitions. Word has length 21 [2022-11-18 20:18:31,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:31,336 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 676 transitions. [2022-11-18 20:18:31,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:31,337 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 676 transitions. [2022-11-18 20:18:31,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 20:18:31,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:31,338 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:31,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 20:18:31,339 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:31,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:31,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1640295897, now seen corresponding path program 1 times [2022-11-18 20:18:31,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:31,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585871648] [2022-11-18 20:18:31,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:31,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:31,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:31,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:31,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585871648] [2022-11-18 20:18:31,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585871648] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:18:31,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625246661] [2022-11-18 20:18:31,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:31,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:31,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:18:31,649 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:18:31,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:18:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:31,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:18:31,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:18:32,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:32,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:18:32,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:32,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625246661] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:18:32,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:18:32,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 10 [2022-11-18 20:18:32,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891148227] [2022-11-18 20:18:32,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:18:32,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:18:32,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:32,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:18:32,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:18:32,191 INFO L87 Difference]: Start difference. First operand 212 states and 676 transitions. Second operand has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 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 20:18:32,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:32,545 INFO L93 Difference]: Finished difference Result 361 states and 1137 transitions. [2022-11-18 20:18:32,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:18:32,546 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 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 22 [2022-11-18 20:18:32,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:32,550 INFO L225 Difference]: With dead ends: 361 [2022-11-18 20:18:32,550 INFO L226 Difference]: Without dead ends: 354 [2022-11-18 20:18:32,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:18:32,551 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 65 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:32,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 35 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:18:32,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-11-18 20:18:32,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 300. [2022-11-18 20:18:32,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 3.3377926421404682) internal successors, (998), 299 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:32,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 998 transitions. [2022-11-18 20:18:32,566 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 998 transitions. Word has length 22 [2022-11-18 20:18:32,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:32,566 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 998 transitions. [2022-11-18 20:18:32,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 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 20:18:32,567 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 998 transitions. [2022-11-18 20:18:32,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 20:18:32,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:32,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:32,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:18:32,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:32,776 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:32,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:32,776 INFO L85 PathProgramCache]: Analyzing trace with hash 243569691, now seen corresponding path program 2 times [2022-11-18 20:18:32,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:32,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137439784] [2022-11-18 20:18:32,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:32,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:32,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:33,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:33,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:33,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137439784] [2022-11-18 20:18:33,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137439784] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:18:33,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413774570] [2022-11-18 20:18:33,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:18:33,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:33,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:18:33,155 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:18:33,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:18:33,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:18:33,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:18:33,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:18:33,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:18:33,538 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:33,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:18:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:33,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413774570] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:18:33,725 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:18:33,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 10 [2022-11-18 20:18:33,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735567949] [2022-11-18 20:18:33,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:18:33,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:18:33,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:33,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:18:33,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:18:33,726 INFO L87 Difference]: Start difference. First operand 300 states and 998 transitions. Second operand has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:34,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:34,123 INFO L93 Difference]: Finished difference Result 405 states and 1323 transitions. [2022-11-18 20:18:34,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:18:34,124 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 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 20:18:34,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:34,127 INFO L225 Difference]: With dead ends: 405 [2022-11-18 20:18:34,127 INFO L226 Difference]: Without dead ends: 398 [2022-11-18 20:18:34,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:18:34,128 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 52 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:34,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 40 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:18:34,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-11-18 20:18:34,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 330. [2022-11-18 20:18:34,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 3.419452887537994) internal successors, (1125), 329 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:34,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 1125 transitions. [2022-11-18 20:18:34,144 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 1125 transitions. Word has length 22 [2022-11-18 20:18:34,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:34,144 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 1125 transitions. [2022-11-18 20:18:34,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:34,145 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 1125 transitions. [2022-11-18 20:18:34,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 20:18:34,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:34,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:34,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:18:34,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-18 20:18:34,354 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:34,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:34,355 INFO L85 PathProgramCache]: Analyzing trace with hash -462343769, now seen corresponding path program 3 times [2022-11-18 20:18:34,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:34,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49531319] [2022-11-18 20:18:34,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:34,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:34,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:34,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:34,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49531319] [2022-11-18 20:18:34,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49531319] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:18:34,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226242874] [2022-11-18 20:18:34,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:18:34,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:34,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:18:34,688 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:18:34,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:18:34,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 20:18:34,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:18:34,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:18:34,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:18:35,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:35,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:18:35,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:35,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226242874] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:18:35,303 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:18:35,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 9 [2022-11-18 20:18:35,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476451704] [2022-11-18 20:18:35,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:18:35,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:18:35,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:35,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:18:35,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:18:35,308 INFO L87 Difference]: Start difference. First operand 330 states and 1125 transitions. Second operand has 11 states, 10 states have (on average 5.5) internal successors, (55), 10 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 20:18:35,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:35,688 INFO L93 Difference]: Finished difference Result 520 states and 1707 transitions. [2022-11-18 20:18:35,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:18:35,689 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.5) internal successors, (55), 10 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 22 [2022-11-18 20:18:35,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:35,692 INFO L225 Difference]: With dead ends: 520 [2022-11-18 20:18:35,692 INFO L226 Difference]: Without dead ends: 506 [2022-11-18 20:18:35,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:18:35,693 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 58 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:35,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 27 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:18:35,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2022-11-18 20:18:35,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 382. [2022-11-18 20:18:35,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4829396325459316) internal successors, (1327), 381 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:35,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1327 transitions. [2022-11-18 20:18:35,716 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1327 transitions. Word has length 22 [2022-11-18 20:18:35,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:35,716 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 1327 transitions. [2022-11-18 20:18:35,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.5) internal successors, (55), 10 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 20:18:35,717 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1327 transitions. [2022-11-18 20:18:35,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 20:18:35,718 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:35,718 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:35,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:18:35,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:35,925 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:35,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:35,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1390511071, now seen corresponding path program 4 times [2022-11-18 20:18:35,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:35,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043576358] [2022-11-18 20:18:35,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:35,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:36,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:36,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:36,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043576358] [2022-11-18 20:18:36,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043576358] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:18:36,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156914218] [2022-11-18 20:18:36,278 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:18:36,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:36,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:18:36,280 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:18:36,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:18:36,469 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:18:36,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:18:36,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:18:36,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:18:36,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:36,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:18:36,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:36,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156914218] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:18:36,848 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:18:36,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 8 [2022-11-18 20:18:36,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765012555] [2022-11-18 20:18:36,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:18:36,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:18:36,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:36,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:18:36,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:18:36,850 INFO L87 Difference]: Start difference. First operand 382 states and 1327 transitions. Second operand has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 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 20:18:37,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:37,220 INFO L93 Difference]: Finished difference Result 524 states and 1765 transitions. [2022-11-18 20:18:37,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:18:37,221 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 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 22 [2022-11-18 20:18:37,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:37,225 INFO L225 Difference]: With dead ends: 524 [2022-11-18 20:18:37,225 INFO L226 Difference]: Without dead ends: 510 [2022-11-18 20:18:37,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:18:37,226 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 50 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:37,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 32 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:18:37,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-11-18 20:18:37,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 426. [2022-11-18 20:18:37,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 3.538823529411765) internal successors, (1504), 425 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:37,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 1504 transitions. [2022-11-18 20:18:37,251 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 1504 transitions. Word has length 22 [2022-11-18 20:18:37,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:37,252 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 1504 transitions. [2022-11-18 20:18:37,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 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 20:18:37,252 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 1504 transitions. [2022-11-18 20:18:37,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 20:18:37,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:37,255 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:37,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:18:37,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-18 20:18:37,464 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:37,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:37,465 INFO L85 PathProgramCache]: Analyzing trace with hash 444626515, now seen corresponding path program 5 times [2022-11-18 20:18:37,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:37,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930671229] [2022-11-18 20:18:37,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:37,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:37,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:37,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:37,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930671229] [2022-11-18 20:18:37,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930671229] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:18:37,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046429562] [2022-11-18 20:18:37,788 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:18:37,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:37,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:18:37,789 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:18:37,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:18:37,988 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:18:37,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:18:37,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:18:37,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:18:38,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:38,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:18:38,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:38,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046429562] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:18:38,346 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:18:38,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 10 [2022-11-18 20:18:38,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563853854] [2022-11-18 20:18:38,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:18:38,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:18:38,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:38,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:18:38,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:18:38,348 INFO L87 Difference]: Start difference. First operand 426 states and 1504 transitions. Second operand has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:38,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:38,736 INFO L93 Difference]: Finished difference Result 547 states and 1885 transitions. [2022-11-18 20:18:38,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:18:38,737 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 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 20:18:38,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:38,741 INFO L225 Difference]: With dead ends: 547 [2022-11-18 20:18:38,741 INFO L226 Difference]: Without dead ends: 540 [2022-11-18 20:18:38,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:18:38,742 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 44 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:38,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 42 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:18:38,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-11-18 20:18:38,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 454. [2022-11-18 20:18:38,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 3.598233995584989) internal successors, (1630), 453 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:38,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 1630 transitions. [2022-11-18 20:18:38,764 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 1630 transitions. Word has length 22 [2022-11-18 20:18:38,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:38,764 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 1630 transitions. [2022-11-18 20:18:38,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:38,765 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 1630 transitions. [2022-11-18 20:18:38,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 20:18:38,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:38,767 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:38,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:18:38,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-18 20:18:38,973 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:38,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:38,974 INFO L85 PathProgramCache]: Analyzing trace with hash -210408173, now seen corresponding path program 6 times [2022-11-18 20:18:38,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:38,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907060764] [2022-11-18 20:18:38,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:38,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:39,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:39,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:39,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907060764] [2022-11-18 20:18:39,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907060764] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:18:39,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597694240] [2022-11-18 20:18:39,264 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:18:39,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:39,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:18:39,265 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:18:39,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:18:39,421 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-18 20:18:39,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:18:39,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:18:39,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:18:39,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:39,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:18:39,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:39,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597694240] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:18:39,741 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:18:39,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 8 [2022-11-18 20:18:39,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106638208] [2022-11-18 20:18:39,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:18:39,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:18:39,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:39,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:18:39,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:18:39,743 INFO L87 Difference]: Start difference. First operand 454 states and 1630 transitions. Second operand has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 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 20:18:40,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:40,058 INFO L93 Difference]: Finished difference Result 596 states and 2068 transitions. [2022-11-18 20:18:40,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:18:40,059 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 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 22 [2022-11-18 20:18:40,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:40,064 INFO L225 Difference]: With dead ends: 596 [2022-11-18 20:18:40,064 INFO L226 Difference]: Without dead ends: 582 [2022-11-18 20:18:40,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:18:40,065 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 60 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:40,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 27 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:18:40,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2022-11-18 20:18:40,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 466. [2022-11-18 20:18:40,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 465 states have (on average 3.6559139784946235) internal successors, (1700), 465 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:40,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 1700 transitions. [2022-11-18 20:18:40,088 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 1700 transitions. Word has length 22 [2022-11-18 20:18:40,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:40,089 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 1700 transitions. [2022-11-18 20:18:40,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 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 20:18:40,089 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 1700 transitions. [2022-11-18 20:18:40,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:18:40,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:40,092 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:40,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:18:40,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-18 20:18:40,309 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:40,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:40,309 INFO L85 PathProgramCache]: Analyzing trace with hash 690659453, now seen corresponding path program 7 times [2022-11-18 20:18:40,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:40,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880098969] [2022-11-18 20:18:40,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:40,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:40,534 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:40,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:40,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880098969] [2022-11-18 20:18:40,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880098969] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:18:40,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349654139] [2022-11-18 20:18:40,535 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:18:40,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:40,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:18:40,539 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:18:40,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:18:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:40,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:18:40,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:18:40,823 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:40,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:18:40,965 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:40,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349654139] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:18:40,966 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:18:40,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-18 20:18:40,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200606251] [2022-11-18 20:18:40,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:18:40,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:18:40,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:40,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:18:40,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:18:40,968 INFO L87 Difference]: Start difference. First operand 466 states and 1700 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 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 20:18:42,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:42,486 INFO L93 Difference]: Finished difference Result 986 states and 3315 transitions. [2022-11-18 20:18:42,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:18:42,487 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 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 20:18:42,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:42,493 INFO L225 Difference]: With dead ends: 986 [2022-11-18 20:18:42,494 INFO L226 Difference]: Without dead ends: 950 [2022-11-18 20:18:42,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 20:18:42,495 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 205 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:42,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 95 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 20:18:42,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2022-11-18 20:18:42,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 698. [2022-11-18 20:18:42,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 697 states have (on average 3.806312769010043) internal successors, (2653), 697 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:42,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 2653 transitions. [2022-11-18 20:18:42,575 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 2653 transitions. Word has length 23 [2022-11-18 20:18:42,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:42,575 INFO L495 AbstractCegarLoop]: Abstraction has 698 states and 2653 transitions. [2022-11-18 20:18:42,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 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 20:18:42,577 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 2653 transitions. [2022-11-18 20:18:42,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:18:42,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:42,580 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:42,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:18:42,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-18 20:18:42,788 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:42,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:42,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1748821304, now seen corresponding path program 8 times [2022-11-18 20:18:42,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:42,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716272139] [2022-11-18 20:18:42,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:42,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:43,006 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:43,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:43,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716272139] [2022-11-18 20:18:43,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716272139] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:18:43,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10015418] [2022-11-18 20:18:43,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:18:43,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:43,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:18:43,009 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:18:43,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:18:43,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:18:43,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:18:43,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:18:43,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:18:43,250 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:43,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:18:43,364 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:43,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10015418] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:18:43,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:18:43,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-11-18 20:18:43,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732514419] [2022-11-18 20:18:43,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:18:43,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:18:43,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:43,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:18:43,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:18:43,366 INFO L87 Difference]: Start difference. First operand 698 states and 2653 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 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 20:18:44,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:44,345 INFO L93 Difference]: Finished difference Result 1530 states and 5488 transitions. [2022-11-18 20:18:44,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:18:44,345 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 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 23 [2022-11-18 20:18:44,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:44,356 INFO L225 Difference]: With dead ends: 1530 [2022-11-18 20:18:44,356 INFO L226 Difference]: Without dead ends: 1516 [2022-11-18 20:18:44,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:18:44,357 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 190 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:44,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 75 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:18:44,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2022-11-18 20:18:44,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 936. [2022-11-18 20:18:44,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 935 states have (on average 3.960427807486631) internal successors, (3703), 935 states have internal predecessors, (3703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:44,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 3703 transitions. [2022-11-18 20:18:44,432 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 3703 transitions. Word has length 23 [2022-11-18 20:18:44,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:44,432 INFO L495 AbstractCegarLoop]: Abstraction has 936 states and 3703 transitions. [2022-11-18 20:18:44,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 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 20:18:44,433 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 3703 transitions. [2022-11-18 20:18:44,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:18:44,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:44,438 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:44,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:18:44,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:44,644 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:44,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:44,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1954069907, now seen corresponding path program 9 times [2022-11-18 20:18:44,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:44,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961050221] [2022-11-18 20:18:44,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:44,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:44,850 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:44,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:44,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961050221] [2022-11-18 20:18:44,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961050221] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:18:44,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207709331] [2022-11-18 20:18:44,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:18:44,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:44,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:18:44,853 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:18:44,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:18:44,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 20:18:44,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:18:44,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:18:44,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:18:45,122 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:45,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:18:45,238 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:45,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207709331] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:18:45,238 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:18:45,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2022-11-18 20:18:45,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305755510] [2022-11-18 20:18:45,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:18:45,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:18:45,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:45,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:18:45,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:18:45,240 INFO L87 Difference]: Start difference. First operand 936 states and 3703 transitions. Second operand has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 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 20:18:49,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:49,054 INFO L93 Difference]: Finished difference Result 2200 states and 7815 transitions. [2022-11-18 20:18:49,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-11-18 20:18:49,055 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 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 20:18:49,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:49,072 INFO L225 Difference]: With dead ends: 2200 [2022-11-18 20:18:49,073 INFO L226 Difference]: Without dead ends: 2108 [2022-11-18 20:18:49,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2242 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1009, Invalid=5471, Unknown=0, NotChecked=0, Total=6480 [2022-11-18 20:18:49,076 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 241 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 1815 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:49,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 121 Invalid, 1859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1815 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-18 20:18:49,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2022-11-18 20:18:49,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 1292. [2022-11-18 20:18:49,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1292 states, 1291 states have (on average 4.137877614252518) internal successors, (5342), 1291 states have internal predecessors, (5342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:49,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 5342 transitions. [2022-11-18 20:18:49,145 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 5342 transitions. Word has length 23 [2022-11-18 20:18:49,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:49,145 INFO L495 AbstractCegarLoop]: Abstraction has 1292 states and 5342 transitions. [2022-11-18 20:18:49,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 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 20:18:49,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 5342 transitions. [2022-11-18 20:18:49,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:18:49,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:49,151 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:49,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:18:49,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:49,357 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:49,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:49,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1076737061, now seen corresponding path program 10 times [2022-11-18 20:18:49,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:49,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629153252] [2022-11-18 20:18:49,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:49,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:49,517 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:49,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:49,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629153252] [2022-11-18 20:18:49,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629153252] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:18:49,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311351251] [2022-11-18 20:18:49,518 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:18:49,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:49,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:18:49,520 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:18:49,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:18:49,673 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:18:49,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:18:49,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:18:49,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:18:49,757 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:49,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:18:49,865 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:49,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311351251] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:18:49,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:18:49,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2022-11-18 20:18:49,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715699004] [2022-11-18 20:18:49,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:18:49,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:18:49,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:49,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:18:49,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:18:49,867 INFO L87 Difference]: Start difference. First operand 1292 states and 5342 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 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 20:18:50,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:50,969 INFO L93 Difference]: Finished difference Result 2554 states and 9444 transitions. [2022-11-18 20:18:50,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 20:18:50,969 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 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 23 [2022-11-18 20:18:50,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:50,998 INFO L225 Difference]: With dead ends: 2554 [2022-11-18 20:18:50,998 INFO L226 Difference]: Without dead ends: 2516 [2022-11-18 20:18:50,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2022-11-18 20:18:51,000 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 204 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:51,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 76 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:18:51,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2516 states. [2022-11-18 20:18:51,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2516 to 1558. [2022-11-18 20:18:51,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 1557 states have (on average 4.261400128452151) internal successors, (6635), 1557 states have internal predecessors, (6635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:51,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 6635 transitions. [2022-11-18 20:18:51,083 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 6635 transitions. Word has length 23 [2022-11-18 20:18:51,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:51,083 INFO L495 AbstractCegarLoop]: Abstraction has 1558 states and 6635 transitions. [2022-11-18 20:18:51,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 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 20:18:51,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 6635 transitions. [2022-11-18 20:18:51,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:18:51,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:51,089 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:51,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:18:51,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:51,295 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:51,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:51,295 INFO L85 PathProgramCache]: Analyzing trace with hash 393200738, now seen corresponding path program 11 times [2022-11-18 20:18:51,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:51,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611907240] [2022-11-18 20:18:51,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:51,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:51,480 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:51,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:51,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611907240] [2022-11-18 20:18:51,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611907240] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:18:51,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946020603] [2022-11-18 20:18:51,481 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:18:51,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:51,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:18:51,483 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:18:51,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 20:18:51,616 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-18 20:18:51,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:18:51,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:18:51,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:18:51,738 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:51,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:18:51,865 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:51,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946020603] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:18:51,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:18:51,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-11-18 20:18:51,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527065249] [2022-11-18 20:18:51,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:18:51,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:18:51,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:51,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:18:51,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:18:51,866 INFO L87 Difference]: Start difference. First operand 1558 states and 6635 transitions. Second operand has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 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 20:18:54,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:54,959 INFO L93 Difference]: Finished difference Result 4546 states and 17024 transitions. [2022-11-18 20:18:54,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-18 20:18:54,960 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 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 20:18:54,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:54,991 INFO L225 Difference]: With dead ends: 4546 [2022-11-18 20:18:54,992 INFO L226 Difference]: Without dead ends: 4470 [2022-11-18 20:18:54,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 968 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=540, Invalid=2766, Unknown=0, NotChecked=0, Total=3306 [2022-11-18 20:18:54,993 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 309 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 1799 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 1836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:54,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 97 Invalid, 1836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1799 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-18 20:18:55,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4470 states. [2022-11-18 20:18:55,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4470 to 1922. [2022-11-18 20:18:55,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1922 states, 1921 states have (on average 4.347735554398751) internal successors, (8352), 1921 states have internal predecessors, (8352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:55,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 8352 transitions. [2022-11-18 20:18:55,147 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 8352 transitions. Word has length 23 [2022-11-18 20:18:55,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:55,148 INFO L495 AbstractCegarLoop]: Abstraction has 1922 states and 8352 transitions. [2022-11-18 20:18:55,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 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 20:18:55,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 8352 transitions. [2022-11-18 20:18:55,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:18:55,156 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:55,156 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:55,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-18 20:18:55,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:55,362 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:55,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:55,362 INFO L85 PathProgramCache]: Analyzing trace with hash -920766659, now seen corresponding path program 12 times [2022-11-18 20:18:55,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:55,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596547088] [2022-11-18 20:18:55,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:55,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:55,608 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:55,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:55,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596547088] [2022-11-18 20:18:55,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596547088] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:18:55,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049800531] [2022-11-18 20:18:55,609 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:18:55,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:55,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:18:55,611 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:18:55,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 20:18:55,755 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-18 20:18:55,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:18:55,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:18:55,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:18:55,847 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:55,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:18:55,984 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:55,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049800531] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:18:55,985 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:18:55,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2022-11-18 20:18:55,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151946962] [2022-11-18 20:18:55,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:18:55,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:18:55,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:55,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:18:55,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:18:55,987 INFO L87 Difference]: Start difference. First operand 1922 states and 8352 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 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 20:18:56,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:56,750 INFO L93 Difference]: Finished difference Result 3100 states and 12486 transitions. [2022-11-18 20:18:56,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 20:18:56,751 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 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 20:18:56,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:56,766 INFO L225 Difference]: With dead ends: 3100 [2022-11-18 20:18:56,766 INFO L226 Difference]: Without dead ends: 3046 [2022-11-18 20:18:56,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:18:56,767 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 216 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:56,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 52 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:18:56,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3046 states. [2022-11-18 20:18:56,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3046 to 2192. [2022-11-18 20:18:56,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2192 states, 2191 states have (on average 4.420356001825651) internal successors, (9685), 2191 states have internal predecessors, (9685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:56,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2192 states to 2192 states and 9685 transitions. [2022-11-18 20:18:56,890 INFO L78 Accepts]: Start accepts. Automaton has 2192 states and 9685 transitions. Word has length 23 [2022-11-18 20:18:56,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:56,890 INFO L495 AbstractCegarLoop]: Abstraction has 2192 states and 9685 transitions. [2022-11-18 20:18:56,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 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 20:18:56,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2192 states and 9685 transitions. [2022-11-18 20:18:56,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:18:56,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:56,899 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:56,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 20:18:57,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-18 20:18:57,105 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:18:57,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:57,106 INFO L85 PathProgramCache]: Analyzing trace with hash 177812885, now seen corresponding path program 13 times [2022-11-18 20:18:57,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:57,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369176609] [2022-11-18 20:18:57,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:57,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:57,274 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:57,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:57,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369176609] [2022-11-18 20:18:57,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369176609] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:18:57,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603501126] [2022-11-18 20:18:57,275 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:18:57,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:57,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:18:57,277 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:18:57,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 20:18:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:57,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:18:57,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:18:57,489 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:57,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:18:57,611 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:57,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603501126] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:18:57,611 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:18:57,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-11-18 20:18:57,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517616471] [2022-11-18 20:18:57,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:18:57,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 20:18:57,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:57,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 20:18:57,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:18:57,613 INFO L87 Difference]: Start difference. First operand 2192 states and 9685 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 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 20:19:00,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:00,163 INFO L93 Difference]: Finished difference Result 4428 states and 16809 transitions. [2022-11-18 20:19:00,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-18 20:19:00,164 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 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 20:19:00,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:00,184 INFO L225 Difference]: With dead ends: 4428 [2022-11-18 20:19:00,185 INFO L226 Difference]: Without dead ends: 4262 [2022-11-18 20:19:00,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=537, Invalid=2769, Unknown=0, NotChecked=0, Total=3306 [2022-11-18 20:19:00,186 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 316 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 1689 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:00,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 136 Invalid, 1716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1689 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 20:19:00,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4262 states. [2022-11-18 20:19:00,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4262 to 2104. [2022-11-18 20:19:00,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2104 states, 2103 states have (on average 4.368996671421779) internal successors, (9188), 2103 states have internal predecessors, (9188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:00,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 9188 transitions. [2022-11-18 20:19:00,309 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 9188 transitions. Word has length 23 [2022-11-18 20:19:00,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:00,309 INFO L495 AbstractCegarLoop]: Abstraction has 2104 states and 9188 transitions. [2022-11-18 20:19:00,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 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 20:19:00,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 9188 transitions. [2022-11-18 20:19:00,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:19:00,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:00,318 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:00,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:00,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-18 20:19:00,524 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:19:00,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:00,524 INFO L85 PathProgramCache]: Analyzing trace with hash -623859611, now seen corresponding path program 14 times [2022-11-18 20:19:00,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:00,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39878102] [2022-11-18 20:19:00,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:00,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:00,670 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:00,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:00,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39878102] [2022-11-18 20:19:00,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39878102] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:00,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054606586] [2022-11-18 20:19:00,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:19:00,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:00,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:00,674 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:00,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 20:19:00,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:19:00,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:19:00,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:19:00,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:00,887 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:19:00,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:19:01,002 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:19:01,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054606586] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:19:01,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:19:01,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2022-11-18 20:19:01,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260865319] [2022-11-18 20:19:01,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:19:01,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:19:01,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:01,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:19:01,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:19:01,004 INFO L87 Difference]: Start difference. First operand 2104 states and 9188 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 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 20:19:04,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:04,457 INFO L93 Difference]: Finished difference Result 4234 states and 16002 transitions. [2022-11-18 20:19:04,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-11-18 20:19:04,458 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 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 20:19:04,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:04,475 INFO L225 Difference]: With dead ends: 4234 [2022-11-18 20:19:04,476 INFO L226 Difference]: Without dead ends: 4178 [2022-11-18 20:19:04,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2418 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1225, Invalid=5915, Unknown=0, NotChecked=0, Total=7140 [2022-11-18 20:19:04,478 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 292 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 1491 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:04,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 115 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1491 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 20:19:04,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4178 states. [2022-11-18 20:19:04,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4178 to 2194. [2022-11-18 20:19:04,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2194 states, 2193 states have (on average 4.2576379388964884) internal successors, (9337), 2193 states have internal predecessors, (9337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:04,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2194 states to 2194 states and 9337 transitions. [2022-11-18 20:19:04,625 INFO L78 Accepts]: Start accepts. Automaton has 2194 states and 9337 transitions. Word has length 23 [2022-11-18 20:19:04,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:04,625 INFO L495 AbstractCegarLoop]: Abstraction has 2194 states and 9337 transitions. [2022-11-18 20:19:04,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 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 20:19:04,625 INFO L276 IsEmpty]: Start isEmpty. Operand 2194 states and 9337 transitions. [2022-11-18 20:19:04,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:19:04,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:04,634 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:04,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:04,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-18 20:19:04,840 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:19:04,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:04,841 INFO L85 PathProgramCache]: Analyzing trace with hash 2104405301, now seen corresponding path program 15 times [2022-11-18 20:19:04,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:04,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067757093] [2022-11-18 20:19:04,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:04,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:05,040 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:05,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:05,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067757093] [2022-11-18 20:19:05,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067757093] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:05,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576854232] [2022-11-18 20:19:05,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:19:05,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:05,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:05,043 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:05,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 20:19:05,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 20:19:05,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:19:05,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:19:05,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:05,271 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:19:05,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:19:05,386 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:19:05,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576854232] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:19:05,387 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:19:05,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2022-11-18 20:19:05,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37446671] [2022-11-18 20:19:05,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:19:05,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:19:05,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:05,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:19:05,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:19:05,388 INFO L87 Difference]: Start difference. First operand 2194 states and 9337 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 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 20:19:09,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:09,715 INFO L93 Difference]: Finished difference Result 5106 states and 19062 transitions. [2022-11-18 20:19:09,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-11-18 20:19:09,716 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 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 20:19:09,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:09,736 INFO L225 Difference]: With dead ends: 5106 [2022-11-18 20:19:09,736 INFO L226 Difference]: Without dead ends: 4996 [2022-11-18 20:19:09,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2981 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1393, Invalid=6979, Unknown=0, NotChecked=0, Total=8372 [2022-11-18 20:19:09,739 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 341 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 2024 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 2077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:09,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 147 Invalid, 2077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2024 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-18 20:19:09,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4996 states. [2022-11-18 20:19:09,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4996 to 2504. [2022-11-18 20:19:09,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2504 states, 2503 states have (on average 4.367558929284858) internal successors, (10932), 2503 states have internal predecessors, (10932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:09,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2504 states to 2504 states and 10932 transitions. [2022-11-18 20:19:09,879 INFO L78 Accepts]: Start accepts. Automaton has 2504 states and 10932 transitions. Word has length 23 [2022-11-18 20:19:09,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:09,880 INFO L495 AbstractCegarLoop]: Abstraction has 2504 states and 10932 transitions. [2022-11-18 20:19:09,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 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 20:19:09,880 INFO L276 IsEmpty]: Start isEmpty. Operand 2504 states and 10932 transitions. [2022-11-18 20:19:09,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:19:09,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:09,888 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:09,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:10,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-18 20:19:10,095 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:19:10,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:10,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1155137837, now seen corresponding path program 16 times [2022-11-18 20:19:10,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:10,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667315078] [2022-11-18 20:19:10,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:10,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:10,289 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:10,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:10,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667315078] [2022-11-18 20:19:10,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667315078] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:10,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499572222] [2022-11-18 20:19:10,290 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:19:10,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:10,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:10,291 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:10,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 20:19:10,419 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:19:10,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:19:10,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:19:10,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:10,509 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:10,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:19:10,622 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:10,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499572222] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:19:10,622 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:19:10,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-11-18 20:19:10,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946237311] [2022-11-18 20:19:10,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:19:10,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:19:10,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:10,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:19:10,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:19:10,623 INFO L87 Difference]: Start difference. First operand 2504 states and 10932 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 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 20:19:11,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:11,490 INFO L93 Difference]: Finished difference Result 3390 states and 13948 transitions. [2022-11-18 20:19:11,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:19:11,490 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 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 23 [2022-11-18 20:19:11,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:11,498 INFO L225 Difference]: With dead ends: 3390 [2022-11-18 20:19:11,498 INFO L226 Difference]: Without dead ends: 3346 [2022-11-18 20:19:11,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:19:11,499 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 176 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:11,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 65 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:19:11,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3346 states. [2022-11-18 20:19:11,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3346 to 2846. [2022-11-18 20:19:11,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2846 states, 2845 states have (on average 4.393321616871705) internal successors, (12499), 2845 states have internal predecessors, (12499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:11,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2846 states to 2846 states and 12499 transitions. [2022-11-18 20:19:11,607 INFO L78 Accepts]: Start accepts. Automaton has 2846 states and 12499 transitions. Word has length 23 [2022-11-18 20:19:11,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:11,607 INFO L495 AbstractCegarLoop]: Abstraction has 2846 states and 12499 transitions. [2022-11-18 20:19:11,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 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 20:19:11,608 INFO L276 IsEmpty]: Start isEmpty. Operand 2846 states and 12499 transitions. [2022-11-18 20:19:11,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:19:11,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:11,617 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:11,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:11,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:11,822 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:19:11,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:11,823 INFO L85 PathProgramCache]: Analyzing trace with hash -957290793, now seen corresponding path program 17 times [2022-11-18 20:19:11,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:11,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423836869] [2022-11-18 20:19:11,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:11,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:11,988 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:11,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:11,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423836869] [2022-11-18 20:19:11,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423836869] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:11,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139086885] [2022-11-18 20:19:11,989 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:19:11,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:11,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:11,990 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:12,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 20:19:12,125 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-18 20:19:12,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:19:12,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:19:12,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:12,223 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:12,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:19:12,346 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:12,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139086885] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:19:12,347 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:19:12,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-11-18 20:19:12,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098485552] [2022-11-18 20:19:12,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:19:12,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 20:19:12,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:12,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 20:19:12,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:19:12,348 INFO L87 Difference]: Start difference. First operand 2846 states and 12499 transitions. Second operand has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 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 20:19:15,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:15,645 INFO L93 Difference]: Finished difference Result 6078 states and 22899 transitions. [2022-11-18 20:19:15,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-11-18 20:19:15,646 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 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 20:19:15,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:15,661 INFO L225 Difference]: With dead ends: 6078 [2022-11-18 20:19:15,661 INFO L226 Difference]: Without dead ends: 5816 [2022-11-18 20:19:15,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2098 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1080, Invalid=5400, Unknown=0, NotChecked=0, Total=6480 [2022-11-18 20:19:15,664 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 305 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 1523 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 1563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:15,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 106 Invalid, 1563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1523 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 20:19:15,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5816 states. [2022-11-18 20:19:15,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5816 to 3140. [2022-11-18 20:19:15,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3140 states, 3139 states have (on average 4.387384517362217) internal successors, (13772), 3139 states have internal predecessors, (13772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:15,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3140 states to 3140 states and 13772 transitions. [2022-11-18 20:19:15,850 INFO L78 Accepts]: Start accepts. Automaton has 3140 states and 13772 transitions. Word has length 23 [2022-11-18 20:19:15,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:15,851 INFO L495 AbstractCegarLoop]: Abstraction has 3140 states and 13772 transitions. [2022-11-18 20:19:15,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 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 20:19:15,851 INFO L276 IsEmpty]: Start isEmpty. Operand 3140 states and 13772 transitions. [2022-11-18 20:19:15,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:19:15,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:15,862 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:15,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:16,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:16,068 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:19:16,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:16,069 INFO L85 PathProgramCache]: Analyzing trace with hash 571308562, now seen corresponding path program 18 times [2022-11-18 20:19:16,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:16,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311232872] [2022-11-18 20:19:16,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:16,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:16,218 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:16,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:16,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311232872] [2022-11-18 20:19:16,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311232872] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:16,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799774719] [2022-11-18 20:19:16,219 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:19:16,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:16,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:16,221 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:16,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 20:19:16,366 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-18 20:19:16,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:19:16,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:19:16,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:16,451 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:16,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:19:16,559 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:16,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799774719] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:19:16,559 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:19:16,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2022-11-18 20:19:16,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144151602] [2022-11-18 20:19:16,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:19:16,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:19:16,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:16,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:19:16,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:19:16,561 INFO L87 Difference]: Start difference. First operand 3140 states and 13772 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 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 20:19:17,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:17,933 INFO L93 Difference]: Finished difference Result 6026 states and 24330 transitions. [2022-11-18 20:19:17,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 20:19:17,933 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 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 20:19:17,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:17,948 INFO L225 Difference]: With dead ends: 6026 [2022-11-18 20:19:17,948 INFO L226 Difference]: Without dead ends: 5948 [2022-11-18 20:19:17,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=270, Invalid=786, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 20:19:17,950 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 408 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:17,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 81 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 20:19:17,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5948 states. [2022-11-18 20:19:18,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5948 to 3550. [2022-11-18 20:19:18,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 3549 states have (on average 4.458720766413074) internal successors, (15824), 3549 states have internal predecessors, (15824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:18,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 15824 transitions. [2022-11-18 20:19:18,123 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 15824 transitions. Word has length 23 [2022-11-18 20:19:18,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:18,124 INFO L495 AbstractCegarLoop]: Abstraction has 3550 states and 15824 transitions. [2022-11-18 20:19:18,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 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 20:19:18,124 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 15824 transitions. [2022-11-18 20:19:18,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:19:18,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:18,136 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:18,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:18,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-18 20:19:18,342 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:19:18,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:18,342 INFO L85 PathProgramCache]: Analyzing trace with hash 802989996, now seen corresponding path program 19 times [2022-11-18 20:19:18,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:18,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060667608] [2022-11-18 20:19:18,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:18,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:18,524 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:18,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:18,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060667608] [2022-11-18 20:19:18,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060667608] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:18,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818818461] [2022-11-18 20:19:18,525 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:19:18,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:18,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:18,526 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:18,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 20:19:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:18,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:19:18,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:18,769 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:18,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:19:18,900 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:18,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818818461] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:19:18,901 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:19:18,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2022-11-18 20:19:18,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033434640] [2022-11-18 20:19:18,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:19:18,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:19:18,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:18,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:19:18,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:19:18,902 INFO L87 Difference]: Start difference. First operand 3550 states and 15824 transitions. Second operand has 16 states, 16 states have (on average 3.8125) internal successors, (61), 16 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:21,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:21,975 INFO L93 Difference]: Finished difference Result 7654 states and 29792 transitions. [2022-11-18 20:19:21,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-18 20:19:21,976 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 16 states have internal predecessors, (61), 0 states have call successors, (0), 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 20:19:21,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:21,999 INFO L225 Difference]: With dead ends: 7654 [2022-11-18 20:19:21,999 INFO L226 Difference]: Without dead ends: 7576 [2022-11-18 20:19:22,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 965 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=669, Invalid=2753, Unknown=0, NotChecked=0, Total=3422 [2022-11-18 20:19:22,001 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 297 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1490 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 1538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:22,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 91 Invalid, 1538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1490 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 20:19:22,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7576 states. [2022-11-18 20:19:22,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7576 to 3972. [2022-11-18 20:19:22,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3972 states, 3971 states have (on average 4.482498111306976) internal successors, (17800), 3971 states have internal predecessors, (17800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:22,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3972 states to 3972 states and 17800 transitions. [2022-11-18 20:19:22,209 INFO L78 Accepts]: Start accepts. Automaton has 3972 states and 17800 transitions. Word has length 23 [2022-11-18 20:19:22,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:22,210 INFO L495 AbstractCegarLoop]: Abstraction has 3972 states and 17800 transitions. [2022-11-18 20:19:22,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 16 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:22,210 INFO L276 IsEmpty]: Start isEmpty. Operand 3972 states and 17800 transitions. [2022-11-18 20:19:22,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:19:22,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:22,224 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:22,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:22,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:22,431 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:19:22,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:22,431 INFO L85 PathProgramCache]: Analyzing trace with hash 847264765, now seen corresponding path program 20 times [2022-11-18 20:19:22,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:22,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648904882] [2022-11-18 20:19:22,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:22,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:22,641 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:22,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:22,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648904882] [2022-11-18 20:19:22,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648904882] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:22,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354310021] [2022-11-18 20:19:22,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:19:22,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:22,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:22,643 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:22,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 20:19:22,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:19:22,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:19:22,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:19:22,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:22,871 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:19:22,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:19:23,001 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:19:23,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354310021] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:19:23,002 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:19:23,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2022-11-18 20:19:23,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667093908] [2022-11-18 20:19:23,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:19:23,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:19:23,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:23,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:19:23,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:19:23,004 INFO L87 Difference]: Start difference. First operand 3972 states and 17800 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 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 20:19:25,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:25,145 INFO L93 Difference]: Finished difference Result 6012 states and 24839 transitions. [2022-11-18 20:19:25,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-18 20:19:25,145 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 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 20:19:25,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:25,161 INFO L225 Difference]: With dead ends: 6012 [2022-11-18 20:19:25,161 INFO L226 Difference]: Without dead ends: 5960 [2022-11-18 20:19:25,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=367, Invalid=1889, Unknown=0, NotChecked=0, Total=2256 [2022-11-18 20:19:25,162 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 314 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:25,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 108 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 20:19:25,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5960 states. [2022-11-18 20:19:25,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5960 to 4278. [2022-11-18 20:19:25,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4278 states, 4277 states have (on average 4.542436287117138) internal successors, (19428), 4277 states have internal predecessors, (19428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:25,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4278 states to 4278 states and 19428 transitions. [2022-11-18 20:19:25,292 INFO L78 Accepts]: Start accepts. Automaton has 4278 states and 19428 transitions. Word has length 23 [2022-11-18 20:19:25,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:25,292 INFO L495 AbstractCegarLoop]: Abstraction has 4278 states and 19428 transitions. [2022-11-18 20:19:25,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 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 20:19:25,293 INFO L276 IsEmpty]: Start isEmpty. Operand 4278 states and 19428 transitions. [2022-11-18 20:19:25,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:19:25,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:25,307 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:25,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:25,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:25,514 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:19:25,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:25,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1388660139, now seen corresponding path program 21 times [2022-11-18 20:19:25,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:25,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858566659] [2022-11-18 20:19:25,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:25,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:25,646 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:25,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:25,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858566659] [2022-11-18 20:19:25,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858566659] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:25,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528807530] [2022-11-18 20:19:25,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:19:25,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:25,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:25,651 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:25,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-18 20:19:25,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 20:19:25,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:19:25,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:19:25,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:25,894 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:25,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:19:26,067 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:26,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528807530] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:19:26,067 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:19:26,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2022-11-18 20:19:26,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347794129] [2022-11-18 20:19:26,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:19:26,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:19:26,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:26,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:19:26,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:19:26,069 INFO L87 Difference]: Start difference. First operand 4278 states and 19428 transitions. Second operand has 15 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 20:19:27,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:27,637 INFO L93 Difference]: Finished difference Result 7424 states and 31799 transitions. [2022-11-18 20:19:27,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 20:19:27,638 INFO L78 Accepts]: Start accepts. Automaton has has 15 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 23 [2022-11-18 20:19:27,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:27,659 INFO L225 Difference]: With dead ends: 7424 [2022-11-18 20:19:27,659 INFO L226 Difference]: Without dead ends: 7300 [2022-11-18 20:19:27,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=270, Invalid=786, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 20:19:27,660 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 310 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:27,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 83 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:19:27,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7300 states. [2022-11-18 20:19:27,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7300 to 4996. [2022-11-18 20:19:27,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4996 states, 4995 states have (on average 4.593993993993994) internal successors, (22947), 4995 states have internal predecessors, (22947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:27,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4996 states to 4996 states and 22947 transitions. [2022-11-18 20:19:27,867 INFO L78 Accepts]: Start accepts. Automaton has 4996 states and 22947 transitions. Word has length 23 [2022-11-18 20:19:27,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:27,868 INFO L495 AbstractCegarLoop]: Abstraction has 4996 states and 22947 transitions. [2022-11-18 20:19:27,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 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 20:19:27,868 INFO L276 IsEmpty]: Start isEmpty. Operand 4996 states and 22947 transitions. [2022-11-18 20:19:27,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:19:27,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:27,883 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:27,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:28,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-11-18 20:19:28,083 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:19:28,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:28,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1677742611, now seen corresponding path program 22 times [2022-11-18 20:19:28,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:28,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62472169] [2022-11-18 20:19:28,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:28,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:28,219 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:28,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:28,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62472169] [2022-11-18 20:19:28,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62472169] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:28,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849504037] [2022-11-18 20:19:28,220 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:19:28,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:28,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:28,221 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:28,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-18 20:19:28,361 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:19:28,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:19:28,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:19:28,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:28,433 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:28,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:19:28,527 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:28,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849504037] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:19:28,527 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:19:28,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2022-11-18 20:19:28,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639944279] [2022-11-18 20:19:28,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:19:28,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:19:28,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:28,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:19:28,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:19:28,528 INFO L87 Difference]: Start difference. First operand 4996 states and 22947 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 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 20:19:29,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:29,316 INFO L93 Difference]: Finished difference Result 7270 states and 31957 transitions. [2022-11-18 20:19:29,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:19:29,316 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 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 23 [2022-11-18 20:19:29,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:29,340 INFO L225 Difference]: With dead ends: 7270 [2022-11-18 20:19:29,340 INFO L226 Difference]: Without dead ends: 7254 [2022-11-18 20:19:29,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:19:29,341 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 148 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:29,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 57 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:19:29,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7254 states. [2022-11-18 20:19:29,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7254 to 5316. [2022-11-18 20:19:29,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5316 states, 5315 states have (on average 4.610536218250235) internal successors, (24505), 5315 states have internal predecessors, (24505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:29,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5316 states to 5316 states and 24505 transitions. [2022-11-18 20:19:29,551 INFO L78 Accepts]: Start accepts. Automaton has 5316 states and 24505 transitions. Word has length 23 [2022-11-18 20:19:29,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:29,551 INFO L495 AbstractCegarLoop]: Abstraction has 5316 states and 24505 transitions. [2022-11-18 20:19:29,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 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 20:19:29,551 INFO L276 IsEmpty]: Start isEmpty. Operand 5316 states and 24505 transitions. [2022-11-18 20:19:29,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:19:29,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:29,573 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:29,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:29,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-11-18 20:19:29,779 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:19:29,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:29,780 INFO L85 PathProgramCache]: Analyzing trace with hash 839837059, now seen corresponding path program 23 times [2022-11-18 20:19:29,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:29,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556012678] [2022-11-18 20:19:29,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:29,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:29,921 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:19:29,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:29,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556012678] [2022-11-18 20:19:29,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556012678] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:29,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959577656] [2022-11-18 20:19:29,922 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:19:29,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:29,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:29,923 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:29,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-18 20:19:30,074 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-18 20:19:30,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:19:30,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:19:30,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:30,145 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:19:30,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:19:30,237 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:19:30,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959577656] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:19:30,238 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:19:30,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2022-11-18 20:19:30,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844594580] [2022-11-18 20:19:30,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:19:30,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:19:30,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:30,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:19:30,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:19:30,239 INFO L87 Difference]: Start difference. First operand 5316 states and 24505 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 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 20:19:31,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:31,105 INFO L93 Difference]: Finished difference Result 7518 states and 32642 transitions. [2022-11-18 20:19:31,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 20:19:31,106 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 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 23 [2022-11-18 20:19:31,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:31,130 INFO L225 Difference]: With dead ends: 7518 [2022-11-18 20:19:31,130 INFO L226 Difference]: Without dead ends: 7466 [2022-11-18 20:19:31,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2022-11-18 20:19:31,131 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 279 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:31,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 64 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:19:31,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7466 states. [2022-11-18 20:19:31,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7466 to 5006. [2022-11-18 20:19:31,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5006 states, 5005 states have (on average 4.571428571428571) internal successors, (22880), 5005 states have internal predecessors, (22880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:31,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5006 states to 5006 states and 22880 transitions. [2022-11-18 20:19:31,339 INFO L78 Accepts]: Start accepts. Automaton has 5006 states and 22880 transitions. Word has length 23 [2022-11-18 20:19:31,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:31,339 INFO L495 AbstractCegarLoop]: Abstraction has 5006 states and 22880 transitions. [2022-11-18 20:19:31,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 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 20:19:31,340 INFO L276 IsEmpty]: Start isEmpty. Operand 5006 states and 22880 transitions. [2022-11-18 20:19:31,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:19:31,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:31,358 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:31,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:31,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:31,564 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:19:31,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:31,565 INFO L85 PathProgramCache]: Analyzing trace with hash 110592798, now seen corresponding path program 24 times [2022-11-18 20:19:31,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:31,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421808923] [2022-11-18 20:19:31,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:31,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:31,719 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:19:31,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:31,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421808923] [2022-11-18 20:19:31,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421808923] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:31,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251602921] [2022-11-18 20:19:31,720 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:19:31,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:31,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:31,723 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:31,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-18 20:19:31,898 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-18 20:19:31,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:19:31,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:19:31,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:31,999 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:31,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:19:32,136 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:32,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251602921] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:19:32,137 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:19:32,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-11-18 20:19:32,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446586107] [2022-11-18 20:19:32,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:19:32,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:19:32,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:32,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:19:32,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:19:32,138 INFO L87 Difference]: Start difference. First operand 5006 states and 22880 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 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 20:19:35,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:35,216 INFO L93 Difference]: Finished difference Result 9364 states and 38532 transitions. [2022-11-18 20:19:35,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-18 20:19:35,217 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 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 20:19:35,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:35,249 INFO L225 Difference]: With dead ends: 9364 [2022-11-18 20:19:35,249 INFO L226 Difference]: Without dead ends: 9300 [2022-11-18 20:19:35,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=518, Invalid=2562, Unknown=0, NotChecked=0, Total=3080 [2022-11-18 20:19:35,251 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 287 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1640 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:35,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 82 Invalid, 1674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1640 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-18 20:19:35,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9300 states. [2022-11-18 20:19:35,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9300 to 5584. [2022-11-18 20:19:35,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5584 states, 5583 states have (on average 4.555436145441519) internal successors, (25433), 5583 states have internal predecessors, (25433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:35,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5584 states to 5584 states and 25433 transitions. [2022-11-18 20:19:35,473 INFO L78 Accepts]: Start accepts. Automaton has 5584 states and 25433 transitions. Word has length 23 [2022-11-18 20:19:35,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:35,473 INFO L495 AbstractCegarLoop]: Abstraction has 5584 states and 25433 transitions. [2022-11-18 20:19:35,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 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 20:19:35,474 INFO L276 IsEmpty]: Start isEmpty. Operand 5584 states and 25433 transitions. [2022-11-18 20:19:35,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:19:35,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:35,488 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:35,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:35,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-11-18 20:19:35,690 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:19:35,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:35,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1780742153, now seen corresponding path program 25 times [2022-11-18 20:19:35,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:35,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585119655] [2022-11-18 20:19:35,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:35,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:35,827 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:19:35,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:35,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585119655] [2022-11-18 20:19:35,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585119655] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:35,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888439703] [2022-11-18 20:19:35,828 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:19:35,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:35,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:35,841 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:35,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-18 20:19:35,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:35,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:19:35,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:36,074 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:19:36,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:19:36,181 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:19:36,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888439703] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:19:36,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:19:36,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2022-11-18 20:19:36,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746851426] [2022-11-18 20:19:36,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:19:36,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:19:36,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:36,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:19:36,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:19:36,182 INFO L87 Difference]: Start difference. First operand 5584 states and 25433 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 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 20:19:39,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:39,069 INFO L93 Difference]: Finished difference Result 8292 states and 35374 transitions. [2022-11-18 20:19:39,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-11-18 20:19:39,069 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 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 20:19:39,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:39,099 INFO L225 Difference]: With dead ends: 8292 [2022-11-18 20:19:39,099 INFO L226 Difference]: Without dead ends: 8220 [2022-11-18 20:19:39,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1632 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=803, Invalid=4167, Unknown=0, NotChecked=0, Total=4970 [2022-11-18 20:19:39,101 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 181 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 1545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:39,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 106 Invalid, 1545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1503 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 20:19:39,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8220 states. [2022-11-18 20:19:39,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8220 to 6024. [2022-11-18 20:19:39,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6024 states, 6023 states have (on average 4.54806574796613) internal successors, (27393), 6023 states have internal predecessors, (27393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:39,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 27393 transitions. [2022-11-18 20:19:39,354 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 27393 transitions. Word has length 23 [2022-11-18 20:19:39,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:39,354 INFO L495 AbstractCegarLoop]: Abstraction has 6024 states and 27393 transitions. [2022-11-18 20:19:39,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 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 20:19:39,355 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 27393 transitions. [2022-11-18 20:19:39,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:19:39,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:39,373 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:39,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:39,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:39,574 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:19:39,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:39,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1513062227, now seen corresponding path program 26 times [2022-11-18 20:19:39,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:39,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932628468] [2022-11-18 20:19:39,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:39,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:39,736 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:39,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:39,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932628468] [2022-11-18 20:19:39,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932628468] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:39,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015132091] [2022-11-18 20:19:39,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:19:39,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:39,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:39,738 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:39,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-18 20:19:39,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:19:39,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:19:39,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:19:39,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:39,966 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:39,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:19:40,055 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:40,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015132091] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:19:40,055 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:19:40,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2022-11-18 20:19:40,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538664011] [2022-11-18 20:19:40,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:19:40,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:19:40,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:40,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:19:40,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:19:40,057 INFO L87 Difference]: Start difference. First operand 6024 states and 27393 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 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 20:19:40,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:40,633 INFO L93 Difference]: Finished difference Result 7112 states and 31094 transitions. [2022-11-18 20:19:40,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:19:40,634 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 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 23 [2022-11-18 20:19:40,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:40,658 INFO L225 Difference]: With dead ends: 7112 [2022-11-18 20:19:40,658 INFO L226 Difference]: Without dead ends: 6964 [2022-11-18 20:19:40,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:19:40,659 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 114 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:40,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 78 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:19:40,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6964 states. [2022-11-18 20:19:40,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6964 to 6158. [2022-11-18 20:19:40,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6158 states, 6157 states have (on average 4.5567646581127175) internal successors, (28056), 6157 states have internal predecessors, (28056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:40,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6158 states to 6158 states and 28056 transitions. [2022-11-18 20:19:40,849 INFO L78 Accepts]: Start accepts. Automaton has 6158 states and 28056 transitions. Word has length 23 [2022-11-18 20:19:40,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:40,850 INFO L495 AbstractCegarLoop]: Abstraction has 6158 states and 28056 transitions. [2022-11-18 20:19:40,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 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 20:19:40,850 INFO L276 IsEmpty]: Start isEmpty. Operand 6158 states and 28056 transitions. [2022-11-18 20:19:40,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:19:40,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:40,867 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:40,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:41,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-11-18 20:19:41,068 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:19:41,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:41,068 INFO L85 PathProgramCache]: Analyzing trace with hash -812853835, now seen corresponding path program 27 times [2022-11-18 20:19:41,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:41,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793440574] [2022-11-18 20:19:41,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:41,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:41,234 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:41,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:41,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793440574] [2022-11-18 20:19:41,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793440574] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:41,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666734078] [2022-11-18 20:19:41,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:19:41,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:41,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:41,236 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:41,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-18 20:19:41,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 20:19:41,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:19:41,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:19:41,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:41,448 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:41,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:19:41,546 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:41,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666734078] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:19:41,546 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:19:41,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-18 20:19:41,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980049618] [2022-11-18 20:19:41,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:19:41,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:19:41,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:41,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:19:41,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:19:41,548 INFO L87 Difference]: Start difference. First operand 6158 states and 28056 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 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 20:19:42,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:42,629 INFO L93 Difference]: Finished difference Result 9004 states and 38002 transitions. [2022-11-18 20:19:42,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:19:42,630 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 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 23 [2022-11-18 20:19:42,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:42,659 INFO L225 Difference]: With dead ends: 9004 [2022-11-18 20:19:42,659 INFO L226 Difference]: Without dead ends: 8890 [2022-11-18 20:19:42,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2022-11-18 20:19:42,660 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 222 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:42,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 91 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 20:19:42,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8890 states. [2022-11-18 20:19:42,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8890 to 6438. [2022-11-18 20:19:42,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6438 states, 6437 states have (on average 4.599813577753612) internal successors, (29609), 6437 states have internal predecessors, (29609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:42,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6438 states to 6438 states and 29609 transitions. [2022-11-18 20:19:42,962 INFO L78 Accepts]: Start accepts. Automaton has 6438 states and 29609 transitions. Word has length 23 [2022-11-18 20:19:42,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:42,962 INFO L495 AbstractCegarLoop]: Abstraction has 6438 states and 29609 transitions. [2022-11-18 20:19:42,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 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 20:19:42,963 INFO L276 IsEmpty]: Start isEmpty. Operand 6438 states and 29609 transitions. [2022-11-18 20:19:42,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:19:42,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:42,978 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:42,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-11-18 20:19:43,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-11-18 20:19:43,179 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:19:43,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:43,179 INFO L85 PathProgramCache]: Analyzing trace with hash -257207279, now seen corresponding path program 28 times [2022-11-18 20:19:43,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:43,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061652681] [2022-11-18 20:19:43,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:43,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:43,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:43,341 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:43,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:43,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061652681] [2022-11-18 20:19:43,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061652681] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:43,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498826920] [2022-11-18 20:19:43,342 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:19:43,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:43,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:43,347 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:43,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-18 20:19:43,490 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:19:43,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:19:43,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:19:43,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:43,561 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:43,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:19:43,701 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:43,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498826920] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:19:43,701 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:19:43,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-11-18 20:19:43,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116653048] [2022-11-18 20:19:43,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:19:43,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:19:43,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:43,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:19:43,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:19:43,703 INFO L87 Difference]: Start difference. First operand 6438 states and 29609 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 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 20:19:44,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:44,574 INFO L93 Difference]: Finished difference Result 8784 states and 37694 transitions. [2022-11-18 20:19:44,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:19:44,574 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 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 23 [2022-11-18 20:19:44,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:44,604 INFO L225 Difference]: With dead ends: 8784 [2022-11-18 20:19:44,604 INFO L226 Difference]: Without dead ends: 8770 [2022-11-18 20:19:44,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:19:44,605 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 247 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:44,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 88 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:19:44,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8770 states. [2022-11-18 20:19:44,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8770 to 6160. [2022-11-18 20:19:44,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6160 states, 6159 states have (on average 4.570060074687449) internal successors, (28147), 6159 states have internal predecessors, (28147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:44,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6160 states to 6160 states and 28147 transitions. [2022-11-18 20:19:44,864 INFO L78 Accepts]: Start accepts. Automaton has 6160 states and 28147 transitions. Word has length 23 [2022-11-18 20:19:44,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:44,864 INFO L495 AbstractCegarLoop]: Abstraction has 6160 states and 28147 transitions. [2022-11-18 20:19:44,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 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 20:19:44,864 INFO L276 IsEmpty]: Start isEmpty. Operand 6160 states and 28147 transitions. [2022-11-18 20:19:44,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:19:44,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:44,880 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:44,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:45,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-11-18 20:19:45,081 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:19:45,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:45,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1507369218, now seen corresponding path program 29 times [2022-11-18 20:19:45,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:45,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342783946] [2022-11-18 20:19:45,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:45,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:45,240 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:45,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:45,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342783946] [2022-11-18 20:19:45,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342783946] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:45,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216708226] [2022-11-18 20:19:45,241 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:19:45,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:45,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:45,242 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:45,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-18 20:19:45,380 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:19:45,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:19:45,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:19:45,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:45,463 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:45,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:19:45,558 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:45,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216708226] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:19:45,559 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:19:45,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-11-18 20:19:45,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915502353] [2022-11-18 20:19:45,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:19:45,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:19:45,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:45,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:19:45,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:19:45,560 INFO L87 Difference]: Start difference. First operand 6160 states and 28147 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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 20:19:46,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:46,541 INFO L93 Difference]: Finished difference Result 7362 states and 32206 transitions. [2022-11-18 20:19:46,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:19:46,542 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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 23 [2022-11-18 20:19:46,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:46,567 INFO L225 Difference]: With dead ends: 7362 [2022-11-18 20:19:46,567 INFO L226 Difference]: Without dead ends: 7298 [2022-11-18 20:19:46,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:19:46,567 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 159 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:46,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 74 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:19:46,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7298 states. [2022-11-18 20:19:46,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7298 to 6330. [2022-11-18 20:19:46,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6330 states, 6329 states have (on average 4.551429925738663) internal successors, (28806), 6329 states have internal predecessors, (28806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:46,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6330 states to 6330 states and 28806 transitions. [2022-11-18 20:19:46,753 INFO L78 Accepts]: Start accepts. Automaton has 6330 states and 28806 transitions. Word has length 23 [2022-11-18 20:19:46,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:46,754 INFO L495 AbstractCegarLoop]: Abstraction has 6330 states and 28806 transitions. [2022-11-18 20:19:46,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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 20:19:46,754 INFO L276 IsEmpty]: Start isEmpty. Operand 6330 states and 28806 transitions. [2022-11-18 20:19:46,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:19:46,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:46,772 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:46,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:46,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:46,972 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:19:46,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:46,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1097655174, now seen corresponding path program 30 times [2022-11-18 20:19:46,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:46,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200352821] [2022-11-18 20:19:46,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:46,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,213 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:47,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:47,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200352821] [2022-11-18 20:19:47,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200352821] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:47,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222564193] [2022-11-18 20:19:47,214 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:19:47,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:47,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:47,225 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:47,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-18 20:19:47,396 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-18 20:19:47,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:19:47,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:19:47,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:47,471 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:47,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:19:47,579 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:47,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222564193] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:19:47,579 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:19:47,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-18 20:19:47,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964286910] [2022-11-18 20:19:47,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:19:47,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:19:47,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:47,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:19:47,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:19:47,581 INFO L87 Difference]: Start difference. First operand 6330 states and 28806 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 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 20:19:48,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:48,682 INFO L93 Difference]: Finished difference Result 9426 states and 40342 transitions. [2022-11-18 20:19:48,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:19:48,682 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 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 23 [2022-11-18 20:19:48,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:48,714 INFO L225 Difference]: With dead ends: 9426 [2022-11-18 20:19:48,714 INFO L226 Difference]: Without dead ends: 9382 [2022-11-18 20:19:48,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-11-18 20:19:48,714 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 216 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:48,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 78 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:19:48,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9382 states. [2022-11-18 20:19:48,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9382 to 6658. [2022-11-18 20:19:48,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6658 states, 6657 states have (on average 4.6002703920684995) internal successors, (30624), 6657 states have internal predecessors, (30624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:48,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6658 states to 6658 states and 30624 transitions. [2022-11-18 20:19:48,934 INFO L78 Accepts]: Start accepts. Automaton has 6658 states and 30624 transitions. Word has length 23 [2022-11-18 20:19:48,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:48,935 INFO L495 AbstractCegarLoop]: Abstraction has 6658 states and 30624 transitions. [2022-11-18 20:19:48,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 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 20:19:48,935 INFO L276 IsEmpty]: Start isEmpty. Operand 6658 states and 30624 transitions. [2022-11-18 20:19:48,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:19:48,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:48,952 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:48,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:49,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:49,153 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:19:49,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:49,153 INFO L85 PathProgramCache]: Analyzing trace with hash 71215081, now seen corresponding path program 31 times [2022-11-18 20:19:49,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:49,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808616788] [2022-11-18 20:19:49,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:49,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:49,315 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:49,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:49,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808616788] [2022-11-18 20:19:49,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808616788] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:49,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957279084] [2022-11-18 20:19:49,317 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:19:49,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:49,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:49,319 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:49,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-18 20:19:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:49,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:19:49,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:49,593 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:19:49,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:19:49,716 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:19:49,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957279084] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:19:49,717 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:19:49,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-18 20:19:49,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545011379] [2022-11-18 20:19:49,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:19:49,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:19:49,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:49,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:19:49,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:19:49,718 INFO L87 Difference]: Start difference. First operand 6658 states and 30624 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 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 20:19:52,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:52,786 INFO L93 Difference]: Finished difference Result 9046 states and 38549 transitions. [2022-11-18 20:19:52,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-11-18 20:19:52,787 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 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 20:19:52,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:52,812 INFO L225 Difference]: With dead ends: 9046 [2022-11-18 20:19:52,812 INFO L226 Difference]: Without dead ends: 8698 [2022-11-18 20:19:52,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1545 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=862, Invalid=4250, Unknown=0, NotChecked=0, Total=5112 [2022-11-18 20:19:52,813 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 345 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 1621 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 1650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:52,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 164 Invalid, 1650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1621 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 20:19:52,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8698 states. [2022-11-18 20:19:53,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8698 to 6904. [2022-11-18 20:19:53,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6904 states, 6903 states have (on average 4.611038678835289) internal successors, (31830), 6903 states have internal predecessors, (31830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:53,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6904 states to 6904 states and 31830 transitions. [2022-11-18 20:19:53,055 INFO L78 Accepts]: Start accepts. Automaton has 6904 states and 31830 transitions. Word has length 23 [2022-11-18 20:19:53,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:53,055 INFO L495 AbstractCegarLoop]: Abstraction has 6904 states and 31830 transitions. [2022-11-18 20:19:53,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 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 20:19:53,055 INFO L276 IsEmpty]: Start isEmpty. Operand 6904 states and 31830 transitions. [2022-11-18 20:19:53,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:19:53,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:53,076 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:53,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:53,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-11-18 20:19:53,288 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:19:53,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:53,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1612146577, now seen corresponding path program 32 times [2022-11-18 20:19:53,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:53,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368295077] [2022-11-18 20:19:53,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:53,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:53,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:53,451 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:53,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:53,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368295077] [2022-11-18 20:19:53,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368295077] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:53,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624647178] [2022-11-18 20:19:53,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:19:53,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:53,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:53,453 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:53,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-18 20:19:53,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:19:53,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:19:53,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:19:53,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:53,671 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:53,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:19:53,771 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:53,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624647178] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:19:53,771 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:19:53,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2022-11-18 20:19:53,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033149491] [2022-11-18 20:19:53,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:19:53,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 20:19:53,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:53,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 20:19:53,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:19:53,773 INFO L87 Difference]: Start difference. First operand 6904 states and 31830 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 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 20:19:57,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:57,127 INFO L93 Difference]: Finished difference Result 11914 states and 49493 transitions. [2022-11-18 20:19:57,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-11-18 20:19:57,128 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 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 20:19:57,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:57,165 INFO L225 Difference]: With dead ends: 11914 [2022-11-18 20:19:57,166 INFO L226 Difference]: Without dead ends: 11722 [2022-11-18 20:19:57,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2102 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1083, Invalid=5237, Unknown=0, NotChecked=0, Total=6320 [2022-11-18 20:19:57,167 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 338 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 1836 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 1877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:57,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 121 Invalid, 1877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1836 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 20:19:57,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11722 states. [2022-11-18 20:19:57,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11722 to 7746. [2022-11-18 20:19:57,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7746 states, 7745 states have (on average 4.640929632020659) internal successors, (35944), 7745 states have internal predecessors, (35944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:57,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7746 states to 7746 states and 35944 transitions. [2022-11-18 20:19:57,611 INFO L78 Accepts]: Start accepts. Automaton has 7746 states and 35944 transitions. Word has length 23 [2022-11-18 20:19:57,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:57,611 INFO L495 AbstractCegarLoop]: Abstraction has 7746 states and 35944 transitions. [2022-11-18 20:19:57,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 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 20:19:57,611 INFO L276 IsEmpty]: Start isEmpty. Operand 7746 states and 35944 transitions. [2022-11-18 20:19:57,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:19:57,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:57,646 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:57,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:57,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:57,852 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:19:57,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:57,853 INFO L85 PathProgramCache]: Analyzing trace with hash 127252191, now seen corresponding path program 33 times [2022-11-18 20:19:57,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:57,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403547764] [2022-11-18 20:19:57,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:57,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:58,034 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:58,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:58,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403547764] [2022-11-18 20:19:58,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403547764] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:58,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811901206] [2022-11-18 20:19:58,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:19:58,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:58,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:58,036 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:58,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-18 20:19:58,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 20:19:58,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:19:58,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:19:58,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:58,270 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:58,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:19:58,362 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:58,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811901206] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:19:58,362 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:19:58,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2022-11-18 20:19:58,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6857762] [2022-11-18 20:19:58,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:19:58,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 20:19:58,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:58,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 20:19:58,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:19:58,363 INFO L87 Difference]: Start difference. First operand 7746 states and 35944 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 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 20:19:59,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:59,161 INFO L93 Difference]: Finished difference Result 10720 states and 47940 transitions. [2022-11-18 20:19:59,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:19:59,161 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 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 23 [2022-11-18 20:19:59,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:59,198 INFO L225 Difference]: With dead ends: 10720 [2022-11-18 20:19:59,198 INFO L226 Difference]: Without dead ends: 10700 [2022-11-18 20:19:59,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=169, Invalid=481, Unknown=0, NotChecked=0, Total=650 [2022-11-18 20:19:59,199 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 227 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:59,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 68 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:19:59,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10700 states. [2022-11-18 20:19:59,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10700 to 8144. [2022-11-18 20:19:59,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8144 states, 8143 states have (on average 4.684637111629621) internal successors, (38147), 8143 states have internal predecessors, (38147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:59,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8144 states to 8144 states and 38147 transitions. [2022-11-18 20:19:59,491 INFO L78 Accepts]: Start accepts. Automaton has 8144 states and 38147 transitions. Word has length 23 [2022-11-18 20:19:59,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:59,491 INFO L495 AbstractCegarLoop]: Abstraction has 8144 states and 38147 transitions. [2022-11-18 20:19:59,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 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 20:19:59,491 INFO L276 IsEmpty]: Start isEmpty. Operand 8144 states and 38147 transitions. [2022-11-18 20:19:59,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:19:59,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:59,511 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:59,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:59,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:59,712 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:19:59,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:59,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1680144428, now seen corresponding path program 34 times [2022-11-18 20:19:59,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:59,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035591305] [2022-11-18 20:19:59,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:59,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:59,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:59,886 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:19:59,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:59,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035591305] [2022-11-18 20:19:59,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035591305] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:59,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440939351] [2022-11-18 20:19:59,887 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:19:59,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:59,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:59,888 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:59,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-11-18 20:20:00,040 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:20:00,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:20:00,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:20:00,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:00,271 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:00,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:00,396 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:00,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440939351] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:20:00,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:20:00,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2022-11-18 20:20:00,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994120461] [2022-11-18 20:20:00,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:20:00,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:20:00,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:00,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:20:00,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:20:00,398 INFO L87 Difference]: Start difference. First operand 8144 states and 38147 transitions. Second operand has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:04,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:04,520 INFO L93 Difference]: Finished difference Result 14944 states and 63199 transitions. [2022-11-18 20:20:04,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-11-18 20:20:04,520 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 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 20:20:04,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:04,577 INFO L225 Difference]: With dead ends: 14944 [2022-11-18 20:20:04,577 INFO L226 Difference]: Without dead ends: 14814 [2022-11-18 20:20:04,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2018 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1119, Invalid=5043, Unknown=0, NotChecked=0, Total=6162 [2022-11-18 20:20:04,579 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 454 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:04,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 90 Invalid, 1498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1441 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 20:20:04,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14814 states. [2022-11-18 20:20:04,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14814 to 8192. [2022-11-18 20:20:04,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8192 states, 8191 states have (on average 4.666463191307533) internal successors, (38223), 8191 states have internal predecessors, (38223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:04,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8192 states to 8192 states and 38223 transitions. [2022-11-18 20:20:04,913 INFO L78 Accepts]: Start accepts. Automaton has 8192 states and 38223 transitions. Word has length 23 [2022-11-18 20:20:04,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:04,913 INFO L495 AbstractCegarLoop]: Abstraction has 8192 states and 38223 transitions. [2022-11-18 20:20:04,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:04,914 INFO L276 IsEmpty]: Start isEmpty. Operand 8192 states and 38223 transitions. [2022-11-18 20:20:04,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:20:04,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:04,981 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:04,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-11-18 20:20:05,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-11-18 20:20:05,182 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:20:05,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:05,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1404036940, now seen corresponding path program 35 times [2022-11-18 20:20:05,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:05,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155805561] [2022-11-18 20:20:05,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:05,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:05,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:05,306 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:05,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:05,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155805561] [2022-11-18 20:20:05,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155805561] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:05,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567373591] [2022-11-18 20:20:05,307 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:20:05,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:05,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:05,311 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:05,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-18 20:20:05,452 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:20:05,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:20:05,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:20:05,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:05,561 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:05,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:05,684 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:05,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567373591] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:20:05,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:20:05,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-18 20:20:05,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185936109] [2022-11-18 20:20:05,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:20:05,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:20:05,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:05,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:20:05,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:20:05,687 INFO L87 Difference]: Start difference. First operand 8192 states and 38223 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 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 20:20:06,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:06,407 INFO L93 Difference]: Finished difference Result 10680 states and 48442 transitions. [2022-11-18 20:20:06,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:20:06,408 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 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 23 [2022-11-18 20:20:06,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:06,443 INFO L225 Difference]: With dead ends: 10680 [2022-11-18 20:20:06,443 INFO L226 Difference]: Without dead ends: 10634 [2022-11-18 20:20:06,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=152, Invalid=268, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:20:06,444 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 136 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:06,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 61 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:20:06,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10634 states. [2022-11-18 20:20:06,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10634 to 8952. [2022-11-18 20:20:06,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8952 states, 8951 states have (on average 4.709753100212267) internal successors, (42157), 8951 states have internal predecessors, (42157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:06,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8952 states to 8952 states and 42157 transitions. [2022-11-18 20:20:06,741 INFO L78 Accepts]: Start accepts. Automaton has 8952 states and 42157 transitions. Word has length 23 [2022-11-18 20:20:06,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:06,741 INFO L495 AbstractCegarLoop]: Abstraction has 8952 states and 42157 transitions. [2022-11-18 20:20:06,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 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 20:20:06,741 INFO L276 IsEmpty]: Start isEmpty. Operand 8952 states and 42157 transitions. [2022-11-18 20:20:06,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:20:06,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:06,767 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:06,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:06,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:06,968 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:20:06,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:06,968 INFO L85 PathProgramCache]: Analyzing trace with hash -215477998, now seen corresponding path program 36 times [2022-11-18 20:20:06,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:06,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781615921] [2022-11-18 20:20:06,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:06,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:07,111 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:07,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:07,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781615921] [2022-11-18 20:20:07,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781615921] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:07,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814244089] [2022-11-18 20:20:07,112 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:20:07,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:07,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:07,114 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:07,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-11-18 20:20:07,330 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-18 20:20:07,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:20:07,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:20:07,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:07,448 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:07,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:07,559 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:07,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814244089] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:20:07,559 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:20:07,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2022-11-18 20:20:07,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737313655] [2022-11-18 20:20:07,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:20:07,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:20:07,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:07,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:20:07,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:20:07,560 INFO L87 Difference]: Start difference. First operand 8952 states and 42157 transitions. Second operand has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 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 20:20:11,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:11,428 INFO L93 Difference]: Finished difference Result 15276 states and 65131 transitions. [2022-11-18 20:20:11,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-11-18 20:20:11,429 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 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 20:20:11,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:11,490 INFO L225 Difference]: With dead ends: 15276 [2022-11-18 20:20:11,490 INFO L226 Difference]: Without dead ends: 15208 [2022-11-18 20:20:11,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2015 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1119, Invalid=5043, Unknown=0, NotChecked=0, Total=6162 [2022-11-18 20:20:11,491 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 344 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 1652 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 1702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:11,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 103 Invalid, 1702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1652 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 20:20:11,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15208 states. [2022-11-18 20:20:11,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15208 to 8946. [2022-11-18 20:20:11,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8946 states, 8945 states have (on average 4.685187255449972) internal successors, (41909), 8945 states have internal predecessors, (41909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:11,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8946 states to 8946 states and 41909 transitions. [2022-11-18 20:20:11,853 INFO L78 Accepts]: Start accepts. Automaton has 8946 states and 41909 transitions. Word has length 23 [2022-11-18 20:20:11,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:11,854 INFO L495 AbstractCegarLoop]: Abstraction has 8946 states and 41909 transitions. [2022-11-18 20:20:11,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 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 20:20:11,854 INFO L276 IsEmpty]: Start isEmpty. Operand 8946 states and 41909 transitions. [2022-11-18 20:20:11,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:20:11,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:11,876 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:11,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:12,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-11-18 20:20:12,076 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:20:12,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:12,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1032533148, now seen corresponding path program 37 times [2022-11-18 20:20:12,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:12,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144983591] [2022-11-18 20:20:12,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:12,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:12,194 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:12,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:12,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144983591] [2022-11-18 20:20:12,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144983591] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:12,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999800091] [2022-11-18 20:20:12,195 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:20:12,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:12,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:12,196 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:12,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-11-18 20:20:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:12,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:20:12,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:12,440 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:12,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:12,520 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:12,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999800091] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:20:12,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:20:12,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2022-11-18 20:20:12,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775257944] [2022-11-18 20:20:12,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:20:12,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:20:12,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:12,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:20:12,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:20:12,521 INFO L87 Difference]: Start difference. First operand 8946 states and 41909 transitions. Second operand has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:13,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:13,635 INFO L93 Difference]: Finished difference Result 12376 states and 54959 transitions. [2022-11-18 20:20:13,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 20:20:13,635 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 0 states have call successors, (0), 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 20:20:13,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:13,673 INFO L225 Difference]: With dead ends: 12376 [2022-11-18 20:20:13,674 INFO L226 Difference]: Without dead ends: 12288 [2022-11-18 20:20:13,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=234, Invalid=696, Unknown=0, NotChecked=0, Total=930 [2022-11-18 20:20:13,674 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 218 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:13,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 65 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:20:13,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12288 states. [2022-11-18 20:20:13,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12288 to 8612. [2022-11-18 20:20:13,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8612 states, 8611 states have (on average 4.681686215306004) internal successors, (40314), 8611 states have internal predecessors, (40314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:13,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8612 states to 8612 states and 40314 transitions. [2022-11-18 20:20:13,918 INFO L78 Accepts]: Start accepts. Automaton has 8612 states and 40314 transitions. Word has length 23 [2022-11-18 20:20:13,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:13,919 INFO L495 AbstractCegarLoop]: Abstraction has 8612 states and 40314 transitions. [2022-11-18 20:20:13,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:13,919 INFO L276 IsEmpty]: Start isEmpty. Operand 8612 states and 40314 transitions. [2022-11-18 20:20:13,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:20:13,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:13,938 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:13,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:14,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-11-18 20:20:14,139 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:20:14,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:14,139 INFO L85 PathProgramCache]: Analyzing trace with hash -487327904, now seen corresponding path program 38 times [2022-11-18 20:20:14,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:14,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347900691] [2022-11-18 20:20:14,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:14,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:14,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:14,282 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:14,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:14,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347900691] [2022-11-18 20:20:14,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347900691] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:14,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933337336] [2022-11-18 20:20:14,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:20:14,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:14,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:14,287 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:14,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-11-18 20:20:14,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:20:14,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:20:14,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:20:14,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:14,570 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:14,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:14,683 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:14,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933337336] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:20:14,684 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:20:14,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-11-18 20:20:14,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845653829] [2022-11-18 20:20:14,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:20:14,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 20:20:14,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:14,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 20:20:14,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:20:14,685 INFO L87 Difference]: Start difference. First operand 8612 states and 40314 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 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 20:20:17,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:17,985 INFO L93 Difference]: Finished difference Result 14168 states and 60822 transitions. [2022-11-18 20:20:17,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-11-18 20:20:17,985 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 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 20:20:17,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:18,037 INFO L225 Difference]: With dead ends: 14168 [2022-11-18 20:20:18,037 INFO L226 Difference]: Without dead ends: 14064 [2022-11-18 20:20:18,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2071 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=921, Invalid=5241, Unknown=0, NotChecked=0, Total=6162 [2022-11-18 20:20:18,038 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 318 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 1975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:18,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 112 Invalid, 1975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1934 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 20:20:18,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14064 states. [2022-11-18 20:20:18,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14064 to 8976. [2022-11-18 20:20:18,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8976 states, 8975 states have (on average 4.68824512534819) internal successors, (42077), 8975 states have internal predecessors, (42077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:18,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8976 states to 8976 states and 42077 transitions. [2022-11-18 20:20:18,391 INFO L78 Accepts]: Start accepts. Automaton has 8976 states and 42077 transitions. Word has length 23 [2022-11-18 20:20:18,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:18,391 INFO L495 AbstractCegarLoop]: Abstraction has 8976 states and 42077 transitions. [2022-11-18 20:20:18,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 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 20:20:18,392 INFO L276 IsEmpty]: Start isEmpty. Operand 8976 states and 42077 transitions. [2022-11-18 20:20:18,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:20:18,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:18,415 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:18,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:18,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-11-18 20:20:18,616 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:20:18,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:18,616 INFO L85 PathProgramCache]: Analyzing trace with hash 765182908, now seen corresponding path program 39 times [2022-11-18 20:20:18,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:18,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61902763] [2022-11-18 20:20:18,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:18,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:18,735 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:18,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:18,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61902763] [2022-11-18 20:20:18,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61902763] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:18,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110215461] [2022-11-18 20:20:18,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:20:18,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:18,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:18,739 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:18,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-11-18 20:20:18,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 20:20:18,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:20:18,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:20:18,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:19,016 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:19,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:19,123 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:19,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110215461] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:20:19,123 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:20:19,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2022-11-18 20:20:19,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684262329] [2022-11-18 20:20:19,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:20:19,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:20:19,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:19,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:20:19,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:20:19,124 INFO L87 Difference]: Start difference. First operand 8976 states and 42077 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 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 20:20:22,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:22,252 INFO L93 Difference]: Finished difference Result 13630 states and 59008 transitions. [2022-11-18 20:20:22,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-11-18 20:20:22,252 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 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 20:20:22,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:22,298 INFO L225 Difference]: With dead ends: 13630 [2022-11-18 20:20:22,298 INFO L226 Difference]: Without dead ends: 13574 [2022-11-18 20:20:22,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1909 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=929, Invalid=4621, Unknown=0, NotChecked=0, Total=5550 [2022-11-18 20:20:22,299 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 231 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2059 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 2096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:22,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 137 Invalid, 2096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2059 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 20:20:22,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13574 states. [2022-11-18 20:20:22,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13574 to 8604. [2022-11-18 20:20:22,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8604 states, 8603 states have (on average 4.684296175752644) internal successors, (40299), 8603 states have internal predecessors, (40299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:22,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8604 states to 8604 states and 40299 transitions. [2022-11-18 20:20:22,690 INFO L78 Accepts]: Start accepts. Automaton has 8604 states and 40299 transitions. Word has length 23 [2022-11-18 20:20:22,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:22,690 INFO L495 AbstractCegarLoop]: Abstraction has 8604 states and 40299 transitions. [2022-11-18 20:20:22,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 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 20:20:22,691 INFO L276 IsEmpty]: Start isEmpty. Operand 8604 states and 40299 transitions. [2022-11-18 20:20:22,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:20:22,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:22,711 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:22,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:22,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:22,912 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:20:22,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:22,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1267774290, now seen corresponding path program 40 times [2022-11-18 20:20:22,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:22,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073207478] [2022-11-18 20:20:22,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:22,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:23,064 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:23,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:23,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073207478] [2022-11-18 20:20:23,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073207478] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:23,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403431639] [2022-11-18 20:20:23,065 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:20:23,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:23,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:23,067 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:23,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-11-18 20:20:23,214 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:20:23,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:20:23,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:20:23,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:23,276 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:23,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:23,370 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:23,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403431639] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:20:23,370 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:20:23,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-11-18 20:20:23,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960395161] [2022-11-18 20:20:23,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:20:23,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:20:23,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:23,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:20:23,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:20:23,371 INFO L87 Difference]: Start difference. First operand 8604 states and 40299 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 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 20:20:24,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:24,218 INFO L93 Difference]: Finished difference Result 9124 states and 41924 transitions. [2022-11-18 20:20:24,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 20:20:24,218 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 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 23 [2022-11-18 20:20:24,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:24,246 INFO L225 Difference]: With dead ends: 9124 [2022-11-18 20:20:24,246 INFO L226 Difference]: Without dead ends: 9064 [2022-11-18 20:20:24,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=595, Unknown=0, NotChecked=0, Total=756 [2022-11-18 20:20:24,247 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 149 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:24,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 60 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:20:24,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9064 states. [2022-11-18 20:20:24,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9064 to 8720. [2022-11-18 20:20:24,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8720 states, 8719 states have (on average 4.682991168712008) internal successors, (40831), 8719 states have internal predecessors, (40831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:24,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8720 states to 8720 states and 40831 transitions. [2022-11-18 20:20:24,534 INFO L78 Accepts]: Start accepts. Automaton has 8720 states and 40831 transitions. Word has length 23 [2022-11-18 20:20:24,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:24,535 INFO L495 AbstractCegarLoop]: Abstraction has 8720 states and 40831 transitions. [2022-11-18 20:20:24,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 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 20:20:24,535 INFO L276 IsEmpty]: Start isEmpty. Operand 8720 states and 40831 transitions. [2022-11-18 20:20:24,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:20:24,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:24,559 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:24,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:24,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2022-11-18 20:20:24,759 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:20:24,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:24,759 INFO L85 PathProgramCache]: Analyzing trace with hash -839009830, now seen corresponding path program 41 times [2022-11-18 20:20:24,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:24,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159733140] [2022-11-18 20:20:24,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:24,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:24,905 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:24,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:24,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159733140] [2022-11-18 20:20:24,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159733140] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:24,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367031532] [2022-11-18 20:20:24,905 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:20:24,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:24,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:24,907 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:24,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-11-18 20:20:25,086 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-18 20:20:25,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:20:25,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:20:25,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:25,170 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:25,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:25,272 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:25,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367031532] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:20:25,272 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:20:25,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2022-11-18 20:20:25,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375193461] [2022-11-18 20:20:25,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:20:25,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:20:25,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:25,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:20:25,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:20:25,274 INFO L87 Difference]: Start difference. First operand 8720 states and 40831 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 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 20:20:28,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:28,575 INFO L93 Difference]: Finished difference Result 14292 states and 61445 transitions. [2022-11-18 20:20:28,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-11-18 20:20:28,575 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 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 20:20:28,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:28,627 INFO L225 Difference]: With dead ends: 14292 [2022-11-18 20:20:28,627 INFO L226 Difference]: Without dead ends: 14144 [2022-11-18 20:20:28,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2200 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1031, Invalid=5611, Unknown=0, NotChecked=0, Total=6642 [2022-11-18 20:20:28,629 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 249 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 2242 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 2279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:28,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 136 Invalid, 2279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2242 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-18 20:20:28,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14144 states. [2022-11-18 20:20:29,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14144 to 9132. [2022-11-18 20:20:29,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9132 states, 9131 states have (on average 4.736173474975359) internal successors, (43246), 9131 states have internal predecessors, (43246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:29,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9132 states to 9132 states and 43246 transitions. [2022-11-18 20:20:29,103 INFO L78 Accepts]: Start accepts. Automaton has 9132 states and 43246 transitions. Word has length 23 [2022-11-18 20:20:29,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:29,103 INFO L495 AbstractCegarLoop]: Abstraction has 9132 states and 43246 transitions. [2022-11-18 20:20:29,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 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 20:20:29,103 INFO L276 IsEmpty]: Start isEmpty. Operand 9132 states and 43246 transitions. [2022-11-18 20:20:29,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:20:29,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:29,130 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:29,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:29,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:29,335 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:20:29,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:29,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1531836171, now seen corresponding path program 42 times [2022-11-18 20:20:29,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:29,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198914963] [2022-11-18 20:20:29,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:29,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:29,495 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:29,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:29,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198914963] [2022-11-18 20:20:29,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198914963] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:29,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319445150] [2022-11-18 20:20:29,497 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:20:29,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:29,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:29,498 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:29,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-11-18 20:20:29,690 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-18 20:20:29,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:20:29,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:20:29,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:29,743 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:29,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:29,837 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:29,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319445150] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:20:29,837 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:20:29,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-18 20:20:29,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981497996] [2022-11-18 20:20:29,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:20:29,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:20:29,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:29,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:20:29,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:20:29,838 INFO L87 Difference]: Start difference. First operand 9132 states and 43246 transitions. Second operand has 15 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 20:20:30,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:30,545 INFO L93 Difference]: Finished difference Result 12066 states and 55262 transitions. [2022-11-18 20:20:30,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:20:30,545 INFO L78 Accepts]: Start accepts. Automaton has has 15 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 23 [2022-11-18 20:20:30,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:30,585 INFO L225 Difference]: With dead ends: 12066 [2022-11-18 20:20:30,585 INFO L226 Difference]: Without dead ends: 12056 [2022-11-18 20:20:30,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:20:30,586 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 208 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:30,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 57 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:20:30,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12056 states. [2022-11-18 20:20:30,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12056 to 10190. [2022-11-18 20:20:30,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10190 states, 10189 states have (on average 4.779664343900285) internal successors, (48700), 10189 states have internal predecessors, (48700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:31,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10190 states to 10190 states and 48700 transitions. [2022-11-18 20:20:31,003 INFO L78 Accepts]: Start accepts. Automaton has 10190 states and 48700 transitions. Word has length 23 [2022-11-18 20:20:31,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:31,003 INFO L495 AbstractCegarLoop]: Abstraction has 10190 states and 48700 transitions. [2022-11-18 20:20:31,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 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 20:20:31,004 INFO L276 IsEmpty]: Start isEmpty. Operand 10190 states and 48700 transitions. [2022-11-18 20:20:31,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:20:31,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:31,032 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:31,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-11-18 20:20:31,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:31,232 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:20:31,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:31,233 INFO L85 PathProgramCache]: Analyzing trace with hash -878638199, now seen corresponding path program 43 times [2022-11-18 20:20:31,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:31,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793205819] [2022-11-18 20:20:31,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:31,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,376 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:31,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:31,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793205819] [2022-11-18 20:20:31,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793205819] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:31,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488296045] [2022-11-18 20:20:31,377 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:20:31,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:31,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:31,379 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:31,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-11-18 20:20:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:20:31,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:31,649 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:31,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:31,737 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:31,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488296045] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:20:31,737 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:20:31,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2022-11-18 20:20:31,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829511983] [2022-11-18 20:20:31,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:20:31,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:20:31,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:31,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:20:31,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:20:31,739 INFO L87 Difference]: Start difference. First operand 10190 states and 48700 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 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 20:20:34,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:34,786 INFO L93 Difference]: Finished difference Result 17224 states and 76263 transitions. [2022-11-18 20:20:34,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-11-18 20:20:34,786 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 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 20:20:34,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:34,841 INFO L225 Difference]: With dead ends: 17224 [2022-11-18 20:20:34,841 INFO L226 Difference]: Without dead ends: 17018 [2022-11-18 20:20:34,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1966 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1179, Invalid=4521, Unknown=0, NotChecked=0, Total=5700 [2022-11-18 20:20:34,842 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 424 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:34,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 116 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 20:20:34,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17018 states. [2022-11-18 20:20:35,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17018 to 11040. [2022-11-18 20:20:35,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11040 states, 11039 states have (on average 4.804239514448772) internal successors, (53034), 11039 states have internal predecessors, (53034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:35,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11040 states to 11040 states and 53034 transitions. [2022-11-18 20:20:35,447 INFO L78 Accepts]: Start accepts. Automaton has 11040 states and 53034 transitions. Word has length 23 [2022-11-18 20:20:35,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:35,447 INFO L495 AbstractCegarLoop]: Abstraction has 11040 states and 53034 transitions. [2022-11-18 20:20:35,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 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 20:20:35,447 INFO L276 IsEmpty]: Start isEmpty. Operand 11040 states and 53034 transitions. [2022-11-18 20:20:35,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:20:35,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:35,481 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:35,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:35,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-11-18 20:20:35,681 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:20:35,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:35,682 INFO L85 PathProgramCache]: Analyzing trace with hash 851757887, now seen corresponding path program 44 times [2022-11-18 20:20:35,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:35,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730570444] [2022-11-18 20:20:35,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:35,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:35,822 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:35,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:35,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730570444] [2022-11-18 20:20:35,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730570444] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:35,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62270209] [2022-11-18 20:20:35,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:20:35,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:35,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:35,827 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:35,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-11-18 20:20:36,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:20:36,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:20:36,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:20:36,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:36,103 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:36,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:36,197 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:36,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62270209] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:20:36,197 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:20:36,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2022-11-18 20:20:36,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712588896] [2022-11-18 20:20:36,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:20:36,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:20:36,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:36,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:20:36,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:20:36,198 INFO L87 Difference]: Start difference. First operand 11040 states and 53034 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 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 20:20:39,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:39,715 INFO L93 Difference]: Finished difference Result 18290 states and 82187 transitions. [2022-11-18 20:20:39,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-11-18 20:20:39,716 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 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 20:20:39,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:39,778 INFO L225 Difference]: With dead ends: 18290 [2022-11-18 20:20:39,778 INFO L226 Difference]: Without dead ends: 18244 [2022-11-18 20:20:39,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2117 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1184, Invalid=4822, Unknown=0, NotChecked=0, Total=6006 [2022-11-18 20:20:39,779 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 364 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 1515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:39,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 109 Invalid, 1515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1450 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 20:20:39,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18244 states. [2022-11-18 20:20:40,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18244 to 11640. [2022-11-18 20:20:40,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11640 states, 11639 states have (on average 4.806598505026205) internal successors, (55944), 11639 states have internal predecessors, (55944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:40,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11640 states to 11640 states and 55944 transitions. [2022-11-18 20:20:40,214 INFO L78 Accepts]: Start accepts. Automaton has 11640 states and 55944 transitions. Word has length 23 [2022-11-18 20:20:40,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:40,214 INFO L495 AbstractCegarLoop]: Abstraction has 11640 states and 55944 transitions. [2022-11-18 20:20:40,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 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 20:20:40,214 INFO L276 IsEmpty]: Start isEmpty. Operand 11640 states and 55944 transitions. [2022-11-18 20:20:40,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:20:40,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:40,299 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:40,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-11-18 20:20:40,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-11-18 20:20:40,500 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:20:40,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:40,500 INFO L85 PathProgramCache]: Analyzing trace with hash 748758345, now seen corresponding path program 45 times [2022-11-18 20:20:40,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:40,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419627606] [2022-11-18 20:20:40,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:40,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:40,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:40,614 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:40,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:40,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419627606] [2022-11-18 20:20:40,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419627606] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:40,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921362773] [2022-11-18 20:20:40,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:20:40,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:40,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:40,616 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:40,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-11-18 20:20:40,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 20:20:40,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:20:40,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:20:40,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:40,842 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:40,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:40,916 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:40,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921362773] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:20:40,916 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:20:40,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2022-11-18 20:20:40,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322305274] [2022-11-18 20:20:40,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:20:40,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:20:40,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:40,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:20:40,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:20:40,917 INFO L87 Difference]: Start difference. First operand 11640 states and 55944 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 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 20:20:41,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:41,816 INFO L93 Difference]: Finished difference Result 16098 states and 74583 transitions. [2022-11-18 20:20:41,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:20:41,817 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 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 23 [2022-11-18 20:20:41,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:41,875 INFO L225 Difference]: With dead ends: 16098 [2022-11-18 20:20:41,875 INFO L226 Difference]: Without dead ends: 16034 [2022-11-18 20:20:41,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756 [2022-11-18 20:20:41,875 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 277 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:41,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 65 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:20:41,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16034 states. [2022-11-18 20:20:42,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16034 to 12330. [2022-11-18 20:20:42,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12330 states, 12329 states have (on average 4.801281531348852) internal successors, (59195), 12329 states have internal predecessors, (59195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:42,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12330 states to 12330 states and 59195 transitions. [2022-11-18 20:20:42,340 INFO L78 Accepts]: Start accepts. Automaton has 12330 states and 59195 transitions. Word has length 23 [2022-11-18 20:20:42,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:42,340 INFO L495 AbstractCegarLoop]: Abstraction has 12330 states and 59195 transitions. [2022-11-18 20:20:42,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 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 20:20:42,340 INFO L276 IsEmpty]: Start isEmpty. Operand 12330 states and 59195 transitions. [2022-11-18 20:20:42,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:20:42,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:42,370 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:42,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:42,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:42,571 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:20:42,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:42,571 INFO L85 PathProgramCache]: Analyzing trace with hash 817891187, now seen corresponding path program 46 times [2022-11-18 20:20:42,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:42,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132927701] [2022-11-18 20:20:42,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:42,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:42,683 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:42,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:42,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132927701] [2022-11-18 20:20:42,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132927701] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:42,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916862047] [2022-11-18 20:20:42,684 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:20:42,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:42,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:42,685 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:42,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-11-18 20:20:42,842 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:20:42,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:20:42,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:20:42,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:42,927 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:42,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:43,017 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:43,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916862047] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:20:43,017 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:20:43,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2022-11-18 20:20:43,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920172519] [2022-11-18 20:20:43,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:20:43,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:20:43,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:43,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:20:43,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:20:43,019 INFO L87 Difference]: Start difference. First operand 12330 states and 59195 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 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 20:20:44,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:44,932 INFO L93 Difference]: Finished difference Result 18102 states and 83513 transitions. [2022-11-18 20:20:44,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-18 20:20:44,932 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 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 23 [2022-11-18 20:20:44,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:45,002 INFO L225 Difference]: With dead ends: 18102 [2022-11-18 20:20:45,002 INFO L226 Difference]: Without dead ends: 18060 [2022-11-18 20:20:45,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=538, Invalid=1814, Unknown=0, NotChecked=0, Total=2352 [2022-11-18 20:20:45,003 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 211 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:45,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 91 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:20:45,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18060 states. [2022-11-18 20:20:45,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18060 to 12752. [2022-11-18 20:20:45,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12752 states, 12751 states have (on average 4.794212218649518) internal successors, (61131), 12751 states have internal predecessors, (61131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:45,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12752 states to 12752 states and 61131 transitions. [2022-11-18 20:20:45,512 INFO L78 Accepts]: Start accepts. Automaton has 12752 states and 61131 transitions. Word has length 23 [2022-11-18 20:20:45,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:45,512 INFO L495 AbstractCegarLoop]: Abstraction has 12752 states and 61131 transitions. [2022-11-18 20:20:45,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 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 20:20:45,513 INFO L276 IsEmpty]: Start isEmpty. Operand 12752 states and 61131 transitions. [2022-11-18 20:20:45,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:20:45,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:45,544 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:45,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:45,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-11-18 20:20:45,745 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:20:45,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:45,746 INFO L85 PathProgramCache]: Analyzing trace with hash 838898331, now seen corresponding path program 47 times [2022-11-18 20:20:45,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:45,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907013053] [2022-11-18 20:20:45,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:45,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:45,878 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:45,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:45,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907013053] [2022-11-18 20:20:45,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907013053] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:45,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130590126] [2022-11-18 20:20:45,879 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:20:45,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:45,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:45,883 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:45,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-11-18 20:20:46,069 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:20:46,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:20:46,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:20:46,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:46,127 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:46,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:46,209 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:46,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130590126] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:20:46,209 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:20:46,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2022-11-18 20:20:46,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704672376] [2022-11-18 20:20:46,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:20:46,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:20:46,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:46,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:20:46,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:20:46,211 INFO L87 Difference]: Start difference. First operand 12752 states and 61131 transitions. Second operand has 12 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 20:20:46,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:46,735 INFO L93 Difference]: Finished difference Result 13494 states and 63939 transitions. [2022-11-18 20:20:46,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:20:46,736 INFO L78 Accepts]: Start accepts. Automaton has has 12 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 23 [2022-11-18 20:20:46,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:46,783 INFO L225 Difference]: With dead ends: 13494 [2022-11-18 20:20:46,784 INFO L226 Difference]: Without dead ends: 13414 [2022-11-18 20:20:46,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:20:46,784 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 114 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:46,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 60 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:20:46,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13414 states. [2022-11-18 20:20:47,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13414 to 12912. [2022-11-18 20:20:47,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12912 states, 12911 states have (on average 4.796839903957865) internal successors, (61932), 12911 states have internal predecessors, (61932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:47,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12912 states to 12912 states and 61932 transitions. [2022-11-18 20:20:47,152 INFO L78 Accepts]: Start accepts. Automaton has 12912 states and 61932 transitions. Word has length 23 [2022-11-18 20:20:47,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:47,152 INFO L495 AbstractCegarLoop]: Abstraction has 12912 states and 61932 transitions. [2022-11-18 20:20:47,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 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 20:20:47,152 INFO L276 IsEmpty]: Start isEmpty. Operand 12912 states and 61932 transitions. [2022-11-18 20:20:47,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:20:47,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:47,191 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:47,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:47,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:47,393 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:20:47,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:47,393 INFO L85 PathProgramCache]: Analyzing trace with hash -2057100019, now seen corresponding path program 48 times [2022-11-18 20:20:47,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:47,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203572712] [2022-11-18 20:20:47,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:47,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:47,545 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:47,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:47,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203572712] [2022-11-18 20:20:47,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203572712] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:47,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891870510] [2022-11-18 20:20:47,545 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:20:47,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:47,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:47,547 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:47,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-11-18 20:20:47,742 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-18 20:20:47,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:20:47,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:20:47,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:47,800 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:47,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:47,881 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:47,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891870510] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:20:47,881 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:20:47,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-18 20:20:47,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18355297] [2022-11-18 20:20:47,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:20:47,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:20:47,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:47,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:20:47,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:20:47,882 INFO L87 Difference]: Start difference. First operand 12912 states and 61932 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 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 20:20:48,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:48,949 INFO L93 Difference]: Finished difference Result 15830 states and 73111 transitions. [2022-11-18 20:20:48,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:20:48,949 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 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 23 [2022-11-18 20:20:48,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:49,013 INFO L225 Difference]: With dead ends: 15830 [2022-11-18 20:20:49,013 INFO L226 Difference]: Without dead ends: 15764 [2022-11-18 20:20:49,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2022-11-18 20:20:49,014 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 158 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:49,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 95 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:20:49,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15764 states. [2022-11-18 20:20:49,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15764 to 13550. [2022-11-18 20:20:49,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13550 states, 13549 states have (on average 4.819986714886707) internal successors, (65306), 13549 states have internal predecessors, (65306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:49,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13550 states to 13550 states and 65306 transitions. [2022-11-18 20:20:49,518 INFO L78 Accepts]: Start accepts. Automaton has 13550 states and 65306 transitions. Word has length 23 [2022-11-18 20:20:49,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:49,518 INFO L495 AbstractCegarLoop]: Abstraction has 13550 states and 65306 transitions. [2022-11-18 20:20:49,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 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 20:20:49,518 INFO L276 IsEmpty]: Start isEmpty. Operand 13550 states and 65306 transitions. [2022-11-18 20:20:49,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:20:49,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:49,556 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:49,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:49,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-11-18 20:20:49,757 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:20:49,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:49,757 INFO L85 PathProgramCache]: Analyzing trace with hash 120580053, now seen corresponding path program 49 times [2022-11-18 20:20:49,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:49,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523399864] [2022-11-18 20:20:49,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:49,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:49,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:49,911 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:49,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:49,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523399864] [2022-11-18 20:20:49,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523399864] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:49,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426829425] [2022-11-18 20:20:49,911 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:20:49,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:49,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:49,913 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:49,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-11-18 20:20:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:50,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:20:50,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:50,127 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:50,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:50,217 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:50,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426829425] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:20:50,217 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:20:50,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-11-18 20:20:50,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094198315] [2022-11-18 20:20:50,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:20:50,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:20:50,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:50,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:20:50,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:20:50,218 INFO L87 Difference]: Start difference. First operand 13550 states and 65306 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 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 20:20:50,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:50,974 INFO L93 Difference]: Finished difference Result 16102 states and 74472 transitions. [2022-11-18 20:20:50,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:20:50,975 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 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 23 [2022-11-18 20:20:50,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:51,032 INFO L225 Difference]: With dead ends: 16102 [2022-11-18 20:20:51,032 INFO L226 Difference]: Without dead ends: 16056 [2022-11-18 20:20:51,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:20:51,032 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 189 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:51,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 93 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:20:51,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16056 states. [2022-11-18 20:20:51,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16056 to 12860. [2022-11-18 20:20:51,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12860 states, 12859 states have (on average 4.80309510848433) internal successors, (61763), 12859 states have internal predecessors, (61763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:51,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12860 states to 12860 states and 61763 transitions. [2022-11-18 20:20:51,586 INFO L78 Accepts]: Start accepts. Automaton has 12860 states and 61763 transitions. Word has length 23 [2022-11-18 20:20:51,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:51,586 INFO L495 AbstractCegarLoop]: Abstraction has 12860 states and 61763 transitions. [2022-11-18 20:20:51,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 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 20:20:51,586 INFO L276 IsEmpty]: Start isEmpty. Operand 12860 states and 61763 transitions. [2022-11-18 20:20:51,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:20:51,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:51,628 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:51,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:51,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2022-11-18 20:20:51,828 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:20:51,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:51,829 INFO L85 PathProgramCache]: Analyzing trace with hash -510682665, now seen corresponding path program 50 times [2022-11-18 20:20:51,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:51,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133859973] [2022-11-18 20:20:51,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:51,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:51,974 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:51,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:51,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133859973] [2022-11-18 20:20:51,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133859973] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:51,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82340400] [2022-11-18 20:20:51,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:20:51,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:51,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:51,979 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:51,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-11-18 20:20:52,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:20:52,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:20:52,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:20:52,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:52,288 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:52,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:52,396 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:52,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82340400] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:20:52,396 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:20:52,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2022-11-18 20:20:52,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588656826] [2022-11-18 20:20:52,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:20:52,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:20:52,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:52,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:20:52,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:20:52,398 INFO L87 Difference]: Start difference. First operand 12860 states and 61763 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 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 20:20:55,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:55,346 INFO L93 Difference]: Finished difference Result 19806 states and 90696 transitions. [2022-11-18 20:20:55,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-11-18 20:20:55,347 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 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 20:20:55,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:55,419 INFO L225 Difference]: With dead ends: 19806 [2022-11-18 20:20:55,419 INFO L226 Difference]: Without dead ends: 19716 [2022-11-18 20:20:55,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1380 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=813, Invalid=3743, Unknown=0, NotChecked=0, Total=4556 [2022-11-18 20:20:55,420 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 274 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:55,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 89 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 20:20:55,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19716 states. [2022-11-18 20:20:55,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19716 to 13102. [2022-11-18 20:20:55,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13102 states, 13101 states have (on average 4.793832531867796) internal successors, (62804), 13101 states have internal predecessors, (62804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:55,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13102 states to 13102 states and 62804 transitions. [2022-11-18 20:20:55,989 INFO L78 Accepts]: Start accepts. Automaton has 13102 states and 62804 transitions. Word has length 23 [2022-11-18 20:20:55,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:55,989 INFO L495 AbstractCegarLoop]: Abstraction has 13102 states and 62804 transitions. [2022-11-18 20:20:55,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 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 20:20:55,989 INFO L276 IsEmpty]: Start isEmpty. Operand 13102 states and 62804 transitions. [2022-11-18 20:20:56,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:20:56,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:56,024 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:56,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-11-18 20:20:56,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:56,225 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:20:56,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:56,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1639920935, now seen corresponding path program 51 times [2022-11-18 20:20:56,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:56,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170944571] [2022-11-18 20:20:56,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:56,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:56,356 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:56,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:56,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170944571] [2022-11-18 20:20:56,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170944571] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:56,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683369713] [2022-11-18 20:20:56,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:20:56,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:56,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:56,358 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:56,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-11-18 20:20:56,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 20:20:56,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:20:56,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:20:56,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:56,633 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:56,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:56,714 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:56,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683369713] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:20:56,714 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:20:56,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2022-11-18 20:20:56,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518104277] [2022-11-18 20:20:56,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:20:56,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:20:56,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:56,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:20:56,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:20:56,715 INFO L87 Difference]: Start difference. First operand 13102 states and 62804 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 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 20:20:57,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:57,774 INFO L93 Difference]: Finished difference Result 20442 states and 95278 transitions. [2022-11-18 20:20:57,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:20:57,774 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 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 23 [2022-11-18 20:20:57,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:57,852 INFO L225 Difference]: With dead ends: 20442 [2022-11-18 20:20:57,852 INFO L226 Difference]: Without dead ends: 20432 [2022-11-18 20:20:57,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2022-11-18 20:20:57,853 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 354 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:57,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 72 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:20:57,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20432 states. [2022-11-18 20:20:58,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20432 to 13944. [2022-11-18 20:20:58,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13944 states, 13943 states have (on average 4.810442515957829) internal successors, (67072), 13943 states have internal predecessors, (67072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:58,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13944 states to 13944 states and 67072 transitions. [2022-11-18 20:20:58,430 INFO L78 Accepts]: Start accepts. Automaton has 13944 states and 67072 transitions. Word has length 23 [2022-11-18 20:20:58,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:58,430 INFO L495 AbstractCegarLoop]: Abstraction has 13944 states and 67072 transitions. [2022-11-18 20:20:58,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 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 20:20:58,430 INFO L276 IsEmpty]: Start isEmpty. Operand 13944 states and 67072 transitions. [2022-11-18 20:20:58,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:20:58,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:58,472 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:58,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:58,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:58,672 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:20:58,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:58,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1177788227, now seen corresponding path program 52 times [2022-11-18 20:20:58,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:58,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664056864] [2022-11-18 20:20:58,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:58,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:58,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:58,793 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:58,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:58,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664056864] [2022-11-18 20:20:58,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664056864] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:58,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609916896] [2022-11-18 20:20:58,794 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:20:58,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:58,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:58,795 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:58,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-11-18 20:20:58,954 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:20:58,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:20:58,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:20:58,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:59,022 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:59,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:59,120 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:59,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609916896] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:20:59,120 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:20:59,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2022-11-18 20:20:59,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860861128] [2022-11-18 20:20:59,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:20:59,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:20:59,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:59,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:20:59,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:20:59,121 INFO L87 Difference]: Start difference. First operand 13944 states and 67072 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 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 20:21:00,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:00,046 INFO L93 Difference]: Finished difference Result 20786 states and 96976 transitions. [2022-11-18 20:21:00,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:21:00,046 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 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 23 [2022-11-18 20:21:00,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:00,125 INFO L225 Difference]: With dead ends: 20786 [2022-11-18 20:21:00,125 INFO L226 Difference]: Without dead ends: 20762 [2022-11-18 20:21:00,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2022-11-18 20:21:00,126 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 279 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:00,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 76 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:21:00,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20762 states. [2022-11-18 20:21:00,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20762 to 14634. [2022-11-18 20:21:00,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14634 states, 14633 states have (on average 4.82942663842001) internal successors, (70669), 14633 states have internal predecessors, (70669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:00,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14634 states to 14634 states and 70669 transitions. [2022-11-18 20:21:00,625 INFO L78 Accepts]: Start accepts. Automaton has 14634 states and 70669 transitions. Word has length 23 [2022-11-18 20:21:00,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:00,626 INFO L495 AbstractCegarLoop]: Abstraction has 14634 states and 70669 transitions. [2022-11-18 20:21:00,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 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 20:21:00,626 INFO L276 IsEmpty]: Start isEmpty. Operand 14634 states and 70669 transitions. [2022-11-18 20:21:00,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:21:00,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:00,666 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:21:00,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-11-18 20:21:00,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:00,867 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:21:00,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:00,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1911572671, now seen corresponding path program 53 times [2022-11-18 20:21:00,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:00,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464767985] [2022-11-18 20:21:00,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:00,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:01,061 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:21:01,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:01,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464767985] [2022-11-18 20:21:01,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464767985] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:21:01,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894846350] [2022-11-18 20:21:01,062 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:21:01,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:01,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:01,063 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:21:01,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-11-18 20:21:01,228 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:21:01,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:21:01,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:21:01,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:21:01,329 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:21:01,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:21:01,398 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:21:01,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894846350] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:21:01,398 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:21:01,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2022-11-18 20:21:01,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43450389] [2022-11-18 20:21:01,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:21:01,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:21:01,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:01,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:21:01,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:21:01,400 INFO L87 Difference]: Start difference. First operand 14634 states and 70669 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 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 20:21:02,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:02,476 INFO L93 Difference]: Finished difference Result 19432 states and 92239 transitions. [2022-11-18 20:21:02,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 20:21:02,477 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 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 20:21:02,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:02,554 INFO L225 Difference]: With dead ends: 19432 [2022-11-18 20:21:02,554 INFO L226 Difference]: Without dead ends: 19432 [2022-11-18 20:21:02,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=234, Invalid=696, Unknown=0, NotChecked=0, Total=930 [2022-11-18 20:21:02,555 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 213 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:02,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 70 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:21:02,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19432 states. [2022-11-18 20:21:02,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19432 to 14540. [2022-11-18 20:21:02,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14540 states, 14539 states have (on average 4.836577481257308) internal successors, (70319), 14539 states have internal predecessors, (70319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:03,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14540 states to 14540 states and 70319 transitions. [2022-11-18 20:21:03,052 INFO L78 Accepts]: Start accepts. Automaton has 14540 states and 70319 transitions. Word has length 23 [2022-11-18 20:21:03,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:03,052 INFO L495 AbstractCegarLoop]: Abstraction has 14540 states and 70319 transitions. [2022-11-18 20:21:03,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 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 20:21:03,052 INFO L276 IsEmpty]: Start isEmpty. Operand 14540 states and 70319 transitions. [2022-11-18 20:21:03,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:21:03,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:03,090 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:21:03,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-11-18 20:21:03,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:03,292 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:21:03,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:03,293 INFO L85 PathProgramCache]: Analyzing trace with hash -780293690, now seen corresponding path program 54 times [2022-11-18 20:21:03,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:03,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722919608] [2022-11-18 20:21:03,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:03,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:03,594 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 20:21:03,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:03,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722919608] [2022-11-18 20:21:03,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722919608] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:21:03,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110777610] [2022-11-18 20:21:03,595 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:21:03,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:03,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:03,596 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:21:03,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-11-18 20:21:03,866 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-18 20:21:03,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:21:03,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:21:03,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:21:04,129 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 20:21:04,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:21:04,587 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 20:21:04,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110777610] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:21:04,587 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:21:04,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 17 [2022-11-18 20:21:04,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97700713] [2022-11-18 20:21:04,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:21:04,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:21:04,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:04,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:21:04,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:21:04,589 INFO L87 Difference]: Start difference. First operand 14540 states and 70319 transitions. Second operand has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 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 20:21:05,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:05,646 INFO L93 Difference]: Finished difference Result 15576 states and 74353 transitions. [2022-11-18 20:21:05,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:21:05,647 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 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 25 [2022-11-18 20:21:05,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:05,704 INFO L225 Difference]: With dead ends: 15576 [2022-11-18 20:21:05,704 INFO L226 Difference]: Without dead ends: 15556 [2022-11-18 20:21:05,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:21:05,704 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 122 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 288 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:05,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 111 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 847 Invalid, 0 Unknown, 288 Unchecked, 0.9s Time] [2022-11-18 20:21:05,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15556 states. [2022-11-18 20:21:06,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15556 to 15202. [2022-11-18 20:21:06,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15202 states, 15201 states have (on average 4.8215906848233665) internal successors, (73293), 15201 states have internal predecessors, (73293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:06,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15202 states to 15202 states and 73293 transitions. [2022-11-18 20:21:06,341 INFO L78 Accepts]: Start accepts. Automaton has 15202 states and 73293 transitions. Word has length 25 [2022-11-18 20:21:06,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:06,341 INFO L495 AbstractCegarLoop]: Abstraction has 15202 states and 73293 transitions. [2022-11-18 20:21:06,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 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 20:21:06,341 INFO L276 IsEmpty]: Start isEmpty. Operand 15202 states and 73293 transitions. [2022-11-18 20:21:06,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:21:06,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:06,379 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:21:06,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-11-18 20:21:06,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:06,580 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:21:06,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:06,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1310524288, now seen corresponding path program 55 times [2022-11-18 20:21:06,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:06,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081249981] [2022-11-18 20:21:06,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:06,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:06,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:06,836 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 20:21:06,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:06,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081249981] [2022-11-18 20:21:06,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081249981] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:21:06,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483326478] [2022-11-18 20:21:06,837 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:21:06,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:06,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:06,844 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:21:06,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-11-18 20:21:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:07,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:21:07,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:21:07,449 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 20:21:07,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:21:07,880 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 20:21:07,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483326478] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:21:07,880 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:21:07,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 18 [2022-11-18 20:21:07,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383893839] [2022-11-18 20:21:07,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:21:07,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:21:07,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:07,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:21:07,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:21:07,882 INFO L87 Difference]: Start difference. First operand 15202 states and 73293 transitions. Second operand has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:09,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:09,024 INFO L93 Difference]: Finished difference Result 16406 states and 78094 transitions. [2022-11-18 20:21:09,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:21:09,024 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 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 25 [2022-11-18 20:21:09,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:09,083 INFO L225 Difference]: With dead ends: 16406 [2022-11-18 20:21:09,084 INFO L226 Difference]: Without dead ends: 16346 [2022-11-18 20:21:09,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:21:09,084 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 128 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:09,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 105 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1049 Invalid, 0 Unknown, 40 Unchecked, 1.0s Time] [2022-11-18 20:21:09,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16346 states. [2022-11-18 20:21:09,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16346 to 15768. [2022-11-18 20:21:09,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15768 states, 15767 states have (on average 4.833259339126022) internal successors, (76206), 15767 states have internal predecessors, (76206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:09,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15768 states to 15768 states and 76206 transitions. [2022-11-18 20:21:09,520 INFO L78 Accepts]: Start accepts. Automaton has 15768 states and 76206 transitions. Word has length 25 [2022-11-18 20:21:09,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:09,520 INFO L495 AbstractCegarLoop]: Abstraction has 15768 states and 76206 transitions. [2022-11-18 20:21:09,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:09,520 INFO L276 IsEmpty]: Start isEmpty. Operand 15768 states and 76206 transitions. [2022-11-18 20:21:09,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:21:09,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:09,557 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:21:09,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-11-18 20:21:09,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:09,758 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:21:09,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:09,758 INFO L85 PathProgramCache]: Analyzing trace with hash -344823296, now seen corresponding path program 56 times [2022-11-18 20:21:09,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:09,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582866036] [2022-11-18 20:21:09,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:09,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:09,997 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 20:21:09,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:09,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582866036] [2022-11-18 20:21:09,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582866036] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:21:09,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073317761] [2022-11-18 20:21:09,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:21:09,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:09,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:09,998 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:21:10,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-11-18 20:21:10,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:21:10,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:21:10,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:21:10,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:21:10,506 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 20:21:10,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:21:10,830 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 20:21:10,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073317761] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:21:10,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:21:10,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 18 [2022-11-18 20:21:10,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063428312] [2022-11-18 20:21:10,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:21:10,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:21:10,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:10,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:21:10,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:21:10,832 INFO L87 Difference]: Start difference. First operand 15768 states and 76206 transitions. Second operand has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:11,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:11,915 INFO L93 Difference]: Finished difference Result 16484 states and 78785 transitions. [2022-11-18 20:21:11,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:21:11,916 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 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 25 [2022-11-18 20:21:11,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:11,998 INFO L225 Difference]: With dead ends: 16484 [2022-11-18 20:21:11,998 INFO L226 Difference]: Without dead ends: 16470 [2022-11-18 20:21:11,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:21:11,999 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 104 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:11,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 110 Invalid, 1207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1110 Invalid, 0 Unknown, 95 Unchecked, 0.9s Time] [2022-11-18 20:21:12,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16470 states. [2022-11-18 20:21:12,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16470 to 16074. [2022-11-18 20:21:12,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16074 states, 16073 states have (on average 4.831705344366329) internal successors, (77660), 16073 states have internal predecessors, (77660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:12,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16074 states to 16074 states and 77660 transitions. [2022-11-18 20:21:12,655 INFO L78 Accepts]: Start accepts. Automaton has 16074 states and 77660 transitions. Word has length 25 [2022-11-18 20:21:12,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:12,655 INFO L495 AbstractCegarLoop]: Abstraction has 16074 states and 77660 transitions. [2022-11-18 20:21:12,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:12,655 INFO L276 IsEmpty]: Start isEmpty. Operand 16074 states and 77660 transitions. [2022-11-18 20:21:12,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:21:12,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:12,706 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:21:12,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-11-18 20:21:12,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-11-18 20:21:12,907 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:21:12,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:12,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1637138912, now seen corresponding path program 57 times [2022-11-18 20:21:12,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:12,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546332749] [2022-11-18 20:21:12,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:12,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:13,179 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 20:21:13,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:13,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546332749] [2022-11-18 20:21:13,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546332749] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:21:13,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116063025] [2022-11-18 20:21:13,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:21:13,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:13,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:13,182 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:21:13,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-11-18 20:21:13,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 20:21:13,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:21:13,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:21:13,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:21:13,719 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 20:21:13,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:21:14,064 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 20:21:14,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116063025] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:21:14,065 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:21:14,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 16 [2022-11-18 20:21:14,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492755772] [2022-11-18 20:21:14,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:21:14,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:21:14,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:14,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:21:14,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:21:14,066 INFO L87 Difference]: Start difference. First operand 16074 states and 77660 transitions. Second operand has 18 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 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 20:21:15,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:15,000 INFO L93 Difference]: Finished difference Result 16917 states and 80716 transitions. [2022-11-18 20:21:15,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:21:15,000 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 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 25 [2022-11-18 20:21:15,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:15,072 INFO L225 Difference]: With dead ends: 16917 [2022-11-18 20:21:15,072 INFO L226 Difference]: Without dead ends: 16896 [2022-11-18 20:21:15,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:21:15,072 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 96 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:15,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 88 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 946 Invalid, 0 Unknown, 88 Unchecked, 0.8s Time] [2022-11-18 20:21:15,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16896 states. [2022-11-18 20:21:15,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16896 to 16396. [2022-11-18 20:21:15,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16396 states, 16395 states have (on average 4.829826166514181) internal successors, (79185), 16395 states have internal predecessors, (79185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:15,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16396 states to 16396 states and 79185 transitions. [2022-11-18 20:21:15,684 INFO L78 Accepts]: Start accepts. Automaton has 16396 states and 79185 transitions. Word has length 25 [2022-11-18 20:21:15,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:15,685 INFO L495 AbstractCegarLoop]: Abstraction has 16396 states and 79185 transitions. [2022-11-18 20:21:15,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 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 20:21:15,685 INFO L276 IsEmpty]: Start isEmpty. Operand 16396 states and 79185 transitions. [2022-11-18 20:21:15,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:21:15,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:15,726 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:21:15,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-11-18 20:21:15,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:15,927 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:21:15,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:15,927 INFO L85 PathProgramCache]: Analyzing trace with hash -671437920, now seen corresponding path program 58 times [2022-11-18 20:21:15,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:15,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268389891] [2022-11-18 20:21:15,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:15,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:16,218 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 20:21:16,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:16,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268389891] [2022-11-18 20:21:16,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268389891] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:21:16,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521395298] [2022-11-18 20:21:16,219 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:21:16,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:16,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:16,223 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:21:16,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-11-18 20:21:16,693 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:21:16,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:21:16,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:21:16,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:21:16,932 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 20:21:16,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:21:17,287 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 20:21:17,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521395298] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:21:17,288 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:21:17,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 16 [2022-11-18 20:21:17,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991126779] [2022-11-18 20:21:17,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:21:17,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:21:17,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:17,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:21:17,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:21:17,289 INFO L87 Difference]: Start difference. First operand 16396 states and 79185 transitions. Second operand has 18 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 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 20:21:18,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:18,183 INFO L93 Difference]: Finished difference Result 17641 states and 83941 transitions. [2022-11-18 20:21:18,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:21:18,184 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 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 25 [2022-11-18 20:21:18,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:18,253 INFO L225 Difference]: With dead ends: 17641 [2022-11-18 20:21:18,253 INFO L226 Difference]: Without dead ends: 17582 [2022-11-18 20:21:18,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:21:18,253 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 103 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:18,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 89 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 928 Invalid, 0 Unknown, 105 Unchecked, 0.8s Time] [2022-11-18 20:21:18,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17582 states. [2022-11-18 20:21:18,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17582 to 16898. [2022-11-18 20:21:18,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16898 states, 16897 states have (on average 4.834467656980529) internal successors, (81688), 16897 states have internal predecessors, (81688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:19,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16898 states to 16898 states and 81688 transitions. [2022-11-18 20:21:19,019 INFO L78 Accepts]: Start accepts. Automaton has 16898 states and 81688 transitions. Word has length 25 [2022-11-18 20:21:19,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:19,019 INFO L495 AbstractCegarLoop]: Abstraction has 16898 states and 81688 transitions. [2022-11-18 20:21:19,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 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 20:21:19,019 INFO L276 IsEmpty]: Start isEmpty. Operand 16898 states and 81688 transitions. [2022-11-18 20:21:19,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:21:19,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:19,072 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:21:19,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-11-18 20:21:19,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:19,272 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:21:19,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:19,273 INFO L85 PathProgramCache]: Analyzing trace with hash -125705014, now seen corresponding path program 59 times [2022-11-18 20:21:19,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:19,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809064060] [2022-11-18 20:21:19,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:19,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:19,587 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 20:21:19,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:19,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809064060] [2022-11-18 20:21:19,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809064060] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:21:19,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195148231] [2022-11-18 20:21:19,588 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:21:19,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:19,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:19,591 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:21:19,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-11-18 20:21:19,933 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:21:19,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:21:19,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:21:19,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:21:20,214 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 20:21:20,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:21:20,584 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 20:21:20,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195148231] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:21:20,585 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:21:20,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 19 [2022-11-18 20:21:20,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548655572] [2022-11-18 20:21:20,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:21:20,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:21:20,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:20,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:21:20,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:21:20,586 INFO L87 Difference]: Start difference. First operand 16898 states and 81688 transitions. Second operand has 21 states, 20 states have (on average 3.4) internal successors, (68), 20 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:21,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:21,525 INFO L93 Difference]: Finished difference Result 17838 states and 85239 transitions. [2022-11-18 20:21:21,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 20:21:21,526 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.4) internal successors, (68), 20 states have internal predecessors, (68), 0 states have call successors, (0), 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 25 [2022-11-18 20:21:21,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:21,594 INFO L225 Difference]: With dead ends: 17838 [2022-11-18 20:21:21,594 INFO L226 Difference]: Without dead ends: 17814 [2022-11-18 20:21:21,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:21:21,595 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 162 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 236 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:21,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 91 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 777 Invalid, 0 Unknown, 236 Unchecked, 0.7s Time] [2022-11-18 20:21:21,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17814 states. [2022-11-18 20:21:22,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17814 to 17256. [2022-11-18 20:21:22,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17256 states, 17255 states have (on average 4.83367139959432) internal successors, (83405), 17255 states have internal predecessors, (83405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:22,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17256 states to 17256 states and 83405 transitions. [2022-11-18 20:21:22,422 INFO L78 Accepts]: Start accepts. Automaton has 17256 states and 83405 transitions. Word has length 25 [2022-11-18 20:21:22,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:22,423 INFO L495 AbstractCegarLoop]: Abstraction has 17256 states and 83405 transitions. [2022-11-18 20:21:22,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.4) internal successors, (68), 20 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:22,423 INFO L276 IsEmpty]: Start isEmpty. Operand 17256 states and 83405 transitions. [2022-11-18 20:21:22,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:21:22,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:22,470 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:21:22,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-11-18 20:21:22,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:22,671 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:21:22,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:22,671 INFO L85 PathProgramCache]: Analyzing trace with hash 607509048, now seen corresponding path program 60 times [2022-11-18 20:21:22,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:22,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734636554] [2022-11-18 20:21:22,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:22,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:22,998 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 20:21:22,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:22,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734636554] [2022-11-18 20:21:22,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734636554] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:21:22,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081798113] [2022-11-18 20:21:22,999 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:21:22,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:22,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:23,003 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:21:23,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-11-18 20:21:23,323 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-18 20:21:23,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:21:23,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:21:23,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:21:23,612 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 20:21:23,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:21:23,889 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 20:21:23,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081798113] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:21:23,889 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:21:23,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 16 [2022-11-18 20:21:23,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75241760] [2022-11-18 20:21:23,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:21:23,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:21:23,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:23,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:21:23,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:21:23,890 INFO L87 Difference]: Start difference. First operand 17256 states and 83405 transitions. Second operand has 18 states, 17 states have (on average 3.411764705882353) internal successors, (58), 17 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 20:21:25,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:25,069 INFO L93 Difference]: Finished difference Result 18152 states and 86406 transitions. [2022-11-18 20:21:25,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:21:25,070 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.411764705882353) internal successors, (58), 17 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 25 [2022-11-18 20:21:25,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:25,143 INFO L225 Difference]: With dead ends: 18152 [2022-11-18 20:21:25,143 INFO L226 Difference]: Without dead ends: 18104 [2022-11-18 20:21:25,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:21:25,144 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 98 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:25,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 80 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 20:21:25,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18104 states. [2022-11-18 20:21:25,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18104 to 17378. [2022-11-18 20:21:25,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17378 states, 17377 states have (on average 4.835990101858779) internal successors, (84035), 17377 states have internal predecessors, (84035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:25,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17378 states to 17378 states and 84035 transitions. [2022-11-18 20:21:25,878 INFO L78 Accepts]: Start accepts. Automaton has 17378 states and 84035 transitions. Word has length 25 [2022-11-18 20:21:25,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:25,878 INFO L495 AbstractCegarLoop]: Abstraction has 17378 states and 84035 transitions. [2022-11-18 20:21:25,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.411764705882353) internal successors, (58), 17 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 20:21:25,879 INFO L276 IsEmpty]: Start isEmpty. Operand 17378 states and 84035 transitions. [2022-11-18 20:21:25,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:21:25,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:25,935 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:21:25,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-11-18 20:21:26,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:26,136 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:21:26,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:26,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1966151042, now seen corresponding path program 61 times [2022-11-18 20:21:26,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:26,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445241413] [2022-11-18 20:21:26,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:26,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:26,588 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 20:21:26,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:26,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445241413] [2022-11-18 20:21:26,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445241413] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:21:26,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230388599] [2022-11-18 20:21:26,589 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:21:26,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:26,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:26,590 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:21:26,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-11-18 20:21:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:26,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:21:26,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:21:27,120 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 20:21:27,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:21:27,505 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 20:21:27,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230388599] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:21:27,505 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:21:27,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 17 [2022-11-18 20:21:27,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947311419] [2022-11-18 20:21:27,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:21:27,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:21:27,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:27,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:21:27,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:21:27,506 INFO L87 Difference]: Start difference. First operand 17378 states and 84035 transitions. Second operand has 19 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:28,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:28,866 INFO L93 Difference]: Finished difference Result 18116 states and 86636 transitions. [2022-11-18 20:21:28,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:21:28,867 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 0 states have call successors, (0), 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 25 [2022-11-18 20:21:28,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:28,936 INFO L225 Difference]: With dead ends: 18116 [2022-11-18 20:21:28,936 INFO L226 Difference]: Without dead ends: 18102 [2022-11-18 20:21:28,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:21:28,936 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 94 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:28,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 98 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 20:21:28,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18102 states. [2022-11-18 20:21:29,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18102 to 17608. [2022-11-18 20:21:29,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17608 states, 17607 states have (on average 4.836485488726074) internal successors, (85156), 17607 states have internal predecessors, (85156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:29,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17608 states to 17608 states and 85156 transitions. [2022-11-18 20:21:29,704 INFO L78 Accepts]: Start accepts. Automaton has 17608 states and 85156 transitions. Word has length 25 [2022-11-18 20:21:29,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:29,704 INFO L495 AbstractCegarLoop]: Abstraction has 17608 states and 85156 transitions. [2022-11-18 20:21:29,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:29,705 INFO L276 IsEmpty]: Start isEmpty. Operand 17608 states and 85156 transitions. [2022-11-18 20:21:29,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:21:29,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:29,765 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:21:29,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-11-18 20:21:29,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:29,966 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:21:29,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:29,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1005690318, now seen corresponding path program 62 times [2022-11-18 20:21:29,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:29,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99521665] [2022-11-18 20:21:29,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:29,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:30,239 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 20:21:30,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:30,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99521665] [2022-11-18 20:21:30,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99521665] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:21:30,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989091499] [2022-11-18 20:21:30,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:21:30,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:30,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:30,241 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:21:30,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-11-18 20:21:30,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:21:30,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:21:30,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:21:30,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:21:30,783 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 20:21:30,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:21:31,015 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 20:21:31,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989091499] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:21:31,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:21:31,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 16 [2022-11-18 20:21:31,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028128346] [2022-11-18 20:21:31,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:21:31,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:21:31,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:31,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:21:31,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:21:31,016 INFO L87 Difference]: Start difference. First operand 17608 states and 85156 transitions. Second operand has 18 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 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 20:21:32,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:32,299 INFO L93 Difference]: Finished difference Result 18780 states and 89418 transitions. [2022-11-18 20:21:32,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:21:32,299 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 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 25 [2022-11-18 20:21:32,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:32,365 INFO L225 Difference]: With dead ends: 18780 [2022-11-18 20:21:32,365 INFO L226 Difference]: Without dead ends: 18726 [2022-11-18 20:21:32,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:21:32,366 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 123 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:32,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 95 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 20:21:32,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18726 states. [2022-11-18 20:21:32,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18726 to 17900. [2022-11-18 20:21:32,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17900 states, 17899 states have (on average 4.835689144644952) internal successors, (86554), 17899 states have internal predecessors, (86554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:33,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17900 states to 17900 states and 86554 transitions. [2022-11-18 20:21:33,048 INFO L78 Accepts]: Start accepts. Automaton has 17900 states and 86554 transitions. Word has length 25 [2022-11-18 20:21:33,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:33,049 INFO L495 AbstractCegarLoop]: Abstraction has 17900 states and 86554 transitions. [2022-11-18 20:21:33,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 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 20:21:33,049 INFO L276 IsEmpty]: Start isEmpty. Operand 17900 states and 86554 transitions. [2022-11-18 20:21:33,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:21:33,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:33,256 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:21:33,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-11-18 20:21:33,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2022-11-18 20:21:33,462 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:21:33,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:33,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1583614514, now seen corresponding path program 63 times [2022-11-18 20:21:33,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:33,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408942895] [2022-11-18 20:21:33,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:33,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:33,696 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 20:21:33,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:33,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408942895] [2022-11-18 20:21:33,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408942895] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:21:33,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366267594] [2022-11-18 20:21:33,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:21:33,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:33,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:33,698 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:21:33,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-11-18 20:21:33,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 20:21:33,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:21:33,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:21:33,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:21:34,182 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 20:21:34,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:21:34,620 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:21:34,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366267594] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:21:34,620 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:21:34,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 20 [2022-11-18 20:21:34,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747007819] [2022-11-18 20:21:34,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:21:34,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:21:34,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:34,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:21:34,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:21:34,622 INFO L87 Difference]: Start difference. First operand 17900 states and 86554 transitions. Second operand has 22 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 21 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:35,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:35,982 INFO L93 Difference]: Finished difference Result 19164 states and 91301 transitions. [2022-11-18 20:21:35,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:21:35,982 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 21 states have internal predecessors, (75), 0 states have call successors, (0), 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 25 [2022-11-18 20:21:35,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:36,071 INFO L225 Difference]: With dead ends: 19164 [2022-11-18 20:21:36,071 INFO L226 Difference]: Without dead ends: 19100 [2022-11-18 20:21:36,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:21:36,071 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 133 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 1416 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 1500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:36,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 123 Invalid, 1500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1416 Invalid, 0 Unknown, 75 Unchecked, 1.1s Time] [2022-11-18 20:21:36,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19100 states. [2022-11-18 20:21:36,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19100 to 18306. [2022-11-18 20:21:36,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18306 states, 18305 states have (on average 4.844960393335154) internal successors, (88687), 18305 states have internal predecessors, (88687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:37,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18306 states to 18306 states and 88687 transitions. [2022-11-18 20:21:37,064 INFO L78 Accepts]: Start accepts. Automaton has 18306 states and 88687 transitions. Word has length 25 [2022-11-18 20:21:37,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:37,064 INFO L495 AbstractCegarLoop]: Abstraction has 18306 states and 88687 transitions. [2022-11-18 20:21:37,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 21 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:37,064 INFO L276 IsEmpty]: Start isEmpty. Operand 18306 states and 88687 transitions. [2022-11-18 20:21:37,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:21:37,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:37,109 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:21:37,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-11-18 20:21:37,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:37,310 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:21:37,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:37,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1995604344, now seen corresponding path program 64 times [2022-11-18 20:21:37,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:37,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016302477] [2022-11-18 20:21:37,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:37,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:37,575 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 20:21:37,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:37,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016302477] [2022-11-18 20:21:37,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016302477] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:21:37,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705749908] [2022-11-18 20:21:37,576 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:21:37,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:37,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:37,577 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:21:37,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-11-18 20:21:37,836 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:21:37,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:21:37,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:21:37,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:21:38,087 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 20:21:38,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:21:38,373 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 20:21:38,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705749908] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:21:38,374 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:21:38,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 19 [2022-11-18 20:21:38,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959246230] [2022-11-18 20:21:38,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:21:38,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:21:38,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:38,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:21:38,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:21:38,375 INFO L87 Difference]: Start difference. First operand 18306 states and 88687 transitions. Second operand has 21 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:39,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:39,212 INFO L93 Difference]: Finished difference Result 19220 states and 91849 transitions. [2022-11-18 20:21:39,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:21:39,213 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 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 25 [2022-11-18 20:21:39,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:39,490 INFO L225 Difference]: With dead ends: 19220 [2022-11-18 20:21:39,491 INFO L226 Difference]: Without dead ends: 19176 [2022-11-18 20:21:39,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:21:39,491 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 145 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:39,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 67 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:21:39,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19176 states. [2022-11-18 20:21:39,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19176 to 18484. [2022-11-18 20:21:39,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18484 states, 18483 states have (on average 4.850078450467998) internal successors, (89644), 18483 states have internal predecessors, (89644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:40,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18484 states to 18484 states and 89644 transitions. [2022-11-18 20:21:40,230 INFO L78 Accepts]: Start accepts. Automaton has 18484 states and 89644 transitions. Word has length 25 [2022-11-18 20:21:40,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:40,230 INFO L495 AbstractCegarLoop]: Abstraction has 18484 states and 89644 transitions. [2022-11-18 20:21:40,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:40,231 INFO L276 IsEmpty]: Start isEmpty. Operand 18484 states and 89644 transitions. [2022-11-18 20:21:40,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:21:40,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:40,284 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:21:40,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-11-18 20:21:40,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:40,485 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:21:40,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:40,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1340569656, now seen corresponding path program 65 times [2022-11-18 20:21:40,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:40,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041396770] [2022-11-18 20:21:40,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:40,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:40,752 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 20:21:40,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:40,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041396770] [2022-11-18 20:21:40,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041396770] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:21:40,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379911163] [2022-11-18 20:21:40,752 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:21:40,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:40,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:40,754 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:21:40,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-11-18 20:21:40,983 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-18 20:21:40,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:21:40,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:21:40,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:21:41,238 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 20:21:41,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:21:41,526 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:21:41,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379911163] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:21:41,526 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:21:41,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 17 [2022-11-18 20:21:41,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556073772] [2022-11-18 20:21:41,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:21:41,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:21:41,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:41,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:21:41,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:21:41,527 INFO L87 Difference]: Start difference. First operand 18484 states and 89644 transitions. Second operand has 19 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:42,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:42,727 INFO L93 Difference]: Finished difference Result 19355 states and 92570 transitions. [2022-11-18 20:21:42,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:21:42,727 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 0 states have call successors, (0), 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 25 [2022-11-18 20:21:42,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:42,980 INFO L225 Difference]: With dead ends: 19355 [2022-11-18 20:21:42,980 INFO L226 Difference]: Without dead ends: 19334 [2022-11-18 20:21:42,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:21:42,981 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 125 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:42,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 99 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 20:21:43,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19334 states. [2022-11-18 20:21:43,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19334 to 18618. [2022-11-18 20:21:43,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18618 states, 18617 states have (on average 4.852822688940216) internal successors, (90345), 18617 states have internal predecessors, (90345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:43,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18618 states to 18618 states and 90345 transitions. [2022-11-18 20:21:43,758 INFO L78 Accepts]: Start accepts. Automaton has 18618 states and 90345 transitions. Word has length 25 [2022-11-18 20:21:43,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:43,758 INFO L495 AbstractCegarLoop]: Abstraction has 18618 states and 90345 transitions. [2022-11-18 20:21:43,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:43,758 INFO L276 IsEmpty]: Start isEmpty. Operand 18618 states and 90345 transitions. [2022-11-18 20:21:43,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:21:43,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:43,982 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:21:43,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-11-18 20:21:44,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2022-11-18 20:21:44,183 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:21:44,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:44,183 INFO L85 PathProgramCache]: Analyzing trace with hash -593583328, now seen corresponding path program 66 times [2022-11-18 20:21:44,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:44,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640289432] [2022-11-18 20:21:44,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:44,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:44,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:44,378 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 20:21:44,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:44,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640289432] [2022-11-18 20:21:44,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640289432] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:21:44,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085018663] [2022-11-18 20:21:44,379 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:21:44,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:44,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:44,380 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:21:44,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-11-18 20:21:44,640 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-18 20:21:44,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:21:44,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:21:44,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:21:44,889 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 20:21:44,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:21:45,157 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 20:21:45,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085018663] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:21:45,158 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:21:45,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 16 [2022-11-18 20:21:45,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864485655] [2022-11-18 20:21:45,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:21:45,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:21:45,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:45,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:21:45,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:21:45,159 INFO L87 Difference]: Start difference. First operand 18618 states and 90345 transitions. Second operand has 18 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:46,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:46,470 INFO L93 Difference]: Finished difference Result 19402 states and 92870 transitions. [2022-11-18 20:21:46,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:21:46,470 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 0 states have call successors, (0), 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 25 [2022-11-18 20:21:46,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:46,558 INFO L225 Difference]: With dead ends: 19402 [2022-11-18 20:21:46,558 INFO L226 Difference]: Without dead ends: 19374 [2022-11-18 20:21:46,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:21:46,558 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 88 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:46,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 105 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 20:21:46,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19374 states. [2022-11-18 20:21:47,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19374 to 18736. [2022-11-18 20:21:47,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18736 states, 18735 states have (on average 4.854550306912197) internal successors, (90950), 18735 states have internal predecessors, (90950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:47,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18736 states to 18736 states and 90950 transitions. [2022-11-18 20:21:47,259 INFO L78 Accepts]: Start accepts. Automaton has 18736 states and 90950 transitions. Word has length 25 [2022-11-18 20:21:47,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:47,259 INFO L495 AbstractCegarLoop]: Abstraction has 18736 states and 90950 transitions. [2022-11-18 20:21:47,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:47,259 INFO L276 IsEmpty]: Start isEmpty. Operand 18736 states and 90950 transitions. [2022-11-18 20:21:47,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:21:47,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:47,302 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:21:47,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-11-18 20:21:47,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2022-11-18 20:21:47,503 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:21:47,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:47,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1896024088, now seen corresponding path program 67 times [2022-11-18 20:21:47,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:47,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411089700] [2022-11-18 20:21:47,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:47,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,971 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 20:21:47,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:47,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411089700] [2022-11-18 20:21:47,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411089700] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:21:47,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667919511] [2022-11-18 20:21:47,972 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:21:47,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:47,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:47,973 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:21:47,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-11-18 20:21:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:48,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:21:48,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:21:48,610 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 20:21:48,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:21:48,862 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 20:21:48,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667919511] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:21:48,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:21:48,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 18 [2022-11-18 20:21:48,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277370600] [2022-11-18 20:21:48,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:21:48,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:21:48,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:48,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:21:48,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:21:48,864 INFO L87 Difference]: Start difference. First operand 18736 states and 90950 transitions. Second operand has 20 states, 19 states have (on average 3.473684210526316) internal successors, (66), 19 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:49,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:49,924 INFO L93 Difference]: Finished difference Result 20011 states and 95358 transitions. [2022-11-18 20:21:49,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:21:49,925 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.473684210526316) internal successors, (66), 19 states have internal predecessors, (66), 0 states have call successors, (0), 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 25 [2022-11-18 20:21:49,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:49,998 INFO L225 Difference]: With dead ends: 20011 [2022-11-18 20:21:49,998 INFO L226 Difference]: Without dead ends: 19966 [2022-11-18 20:21:49,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:21:49,999 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 141 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:49,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 64 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:21:50,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19966 states. [2022-11-18 20:21:50,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19966 to 18906. [2022-11-18 20:21:50,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18906 states, 18905 states have (on average 4.8596138587675215) internal successors, (91871), 18905 states have internal predecessors, (91871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:50,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18906 states to 18906 states and 91871 transitions. [2022-11-18 20:21:50,821 INFO L78 Accepts]: Start accepts. Automaton has 18906 states and 91871 transitions. Word has length 25 [2022-11-18 20:21:50,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:50,821 INFO L495 AbstractCegarLoop]: Abstraction has 18906 states and 91871 transitions. [2022-11-18 20:21:50,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.473684210526316) internal successors, (66), 19 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:50,821 INFO L276 IsEmpty]: Start isEmpty. Operand 18906 states and 91871 transitions. [2022-11-18 20:21:50,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:21:50,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:50,883 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:21:50,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-11-18 20:21:51,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2022-11-18 20:21:51,083 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:21:51,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:51,084 INFO L85 PathProgramCache]: Analyzing trace with hash 190361624, now seen corresponding path program 68 times [2022-11-18 20:21:51,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:51,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953595980] [2022-11-18 20:21:51,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:51,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:51,306 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 20:21:51,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:51,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953595980] [2022-11-18 20:21:51,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953595980] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:21:51,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494347874] [2022-11-18 20:21:51,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:21:51,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:51,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:51,307 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:21:51,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-11-18 20:21:51,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:21:51,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:21:51,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:21:51,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:21:51,802 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 20:21:51,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:21:52,021 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:21:52,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494347874] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:21:52,021 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:21:52,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 17 [2022-11-18 20:21:52,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507308119] [2022-11-18 20:21:52,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:21:52,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:21:52,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:52,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:21:52,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:21:52,023 INFO L87 Difference]: Start difference. First operand 18906 states and 91871 transitions. Second operand has 19 states, 18 states have (on average 3.888888888888889) internal successors, (70), 18 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:53,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:53,128 INFO L93 Difference]: Finished difference Result 19684 states and 94632 transitions. [2022-11-18 20:21:53,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:21:53,128 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.888888888888889) internal successors, (70), 18 states have internal predecessors, (70), 0 states have call successors, (0), 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 25 [2022-11-18 20:21:53,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:53,221 INFO L225 Difference]: With dead ends: 19684 [2022-11-18 20:21:53,221 INFO L226 Difference]: Without dead ends: 19670 [2022-11-18 20:21:53,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:21:53,221 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 110 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:53,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 89 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 20:21:53,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19670 states. [2022-11-18 20:21:53,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19670 to 19022. [2022-11-18 20:21:53,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19022 states, 19021 states have (on average 4.870090952105568) internal successors, (92634), 19021 states have internal predecessors, (92634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:54,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19022 states to 19022 states and 92634 transitions. [2022-11-18 20:21:54,027 INFO L78 Accepts]: Start accepts. Automaton has 19022 states and 92634 transitions. Word has length 25 [2022-11-18 20:21:54,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:54,027 INFO L495 AbstractCegarLoop]: Abstraction has 19022 states and 92634 transitions. [2022-11-18 20:21:54,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.888888888888889) internal successors, (70), 18 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:54,028 INFO L276 IsEmpty]: Start isEmpty. Operand 19022 states and 92634 transitions. [2022-11-18 20:21:54,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:21:54,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:54,076 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:21:54,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-11-18 20:21:54,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-11-18 20:21:54,276 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:21:54,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:54,276 INFO L85 PathProgramCache]: Analyzing trace with hash 996528600, now seen corresponding path program 69 times [2022-11-18 20:21:54,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:54,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907186780] [2022-11-18 20:21:54,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:54,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:54,549 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 20:21:54,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:54,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907186780] [2022-11-18 20:21:54,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907186780] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:21:54,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307195999] [2022-11-18 20:21:54,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:21:54,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:54,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:54,550 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:21:54,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-11-18 20:21:54,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 20:21:54,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:21:54,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:21:54,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:21:55,115 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 20:21:55,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:21:55,340 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:21:55,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307195999] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:21:55,341 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:21:55,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 18 [2022-11-18 20:21:55,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709592735] [2022-11-18 20:21:55,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:21:55,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:21:55,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:55,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:21:55,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:21:55,342 INFO L87 Difference]: Start difference. First operand 19022 states and 92634 transitions. Second operand has 20 states, 19 states have (on average 3.473684210526316) internal successors, (66), 19 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:56,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:56,708 INFO L93 Difference]: Finished difference Result 20183 states and 96716 transitions. [2022-11-18 20:21:56,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:21:56,708 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.473684210526316) internal successors, (66), 19 states have internal predecessors, (66), 0 states have call successors, (0), 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 25 [2022-11-18 20:21:56,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:56,804 INFO L225 Difference]: With dead ends: 20183 [2022-11-18 20:21:56,804 INFO L226 Difference]: Without dead ends: 20126 [2022-11-18 20:21:56,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:21:56,805 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 128 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:56,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 78 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 20:21:56,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20126 states. [2022-11-18 20:21:57,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20126 to 19176. [2022-11-18 20:21:57,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19176 states, 19175 states have (on average 4.8795827900912645) internal successors, (93566), 19175 states have internal predecessors, (93566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:57,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19176 states to 19176 states and 93566 transitions. [2022-11-18 20:21:57,569 INFO L78 Accepts]: Start accepts. Automaton has 19176 states and 93566 transitions. Word has length 25 [2022-11-18 20:21:57,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:57,569 INFO L495 AbstractCegarLoop]: Abstraction has 19176 states and 93566 transitions. [2022-11-18 20:21:57,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.473684210526316) internal successors, (66), 19 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:57,570 INFO L276 IsEmpty]: Start isEmpty. Operand 19176 states and 93566 transitions. [2022-11-18 20:21:57,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:21:57,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:57,619 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:21:57,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-11-18 20:21:57,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:57,820 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:21:57,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:57,821 INFO L85 PathProgramCache]: Analyzing trace with hash -44423798, now seen corresponding path program 70 times [2022-11-18 20:21:57,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:57,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043330912] [2022-11-18 20:21:57,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:57,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:58,212 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 20:21:58,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:58,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043330912] [2022-11-18 20:21:58,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043330912] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:21:58,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850756455] [2022-11-18 20:21:58,213 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:21:58,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:58,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:58,214 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:21:58,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-11-18 20:21:58,465 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:21:58,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:21:58,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:21:58,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:21:58,698 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 20:21:58,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:21:58,959 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 20:21:58,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850756455] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:21:58,959 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:21:58,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 18 [2022-11-18 20:21:58,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690011605] [2022-11-18 20:21:58,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:21:58,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:21:58,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:58,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:21:58,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:21:58,961 INFO L87 Difference]: Start difference. First operand 19176 states and 93566 transitions. Second operand has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:59,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:59,802 INFO L93 Difference]: Finished difference Result 19816 states and 95790 transitions. [2022-11-18 20:21:59,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:21:59,803 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 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 25 [2022-11-18 20:21:59,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:59,879 INFO L225 Difference]: With dead ends: 19816 [2022-11-18 20:21:59,879 INFO L226 Difference]: Without dead ends: 19802 [2022-11-18 20:21:59,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:21:59,879 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 120 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:59,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 71 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:21:59,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19802 states. [2022-11-18 20:22:00,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19802 to 19352. [2022-11-18 20:22:00,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19352 states, 19351 states have (on average 4.8811947702961085) internal successors, (94456), 19351 states have internal predecessors, (94456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:00,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19352 states to 19352 states and 94456 transitions. [2022-11-18 20:22:00,727 INFO L78 Accepts]: Start accepts. Automaton has 19352 states and 94456 transitions. Word has length 25 [2022-11-18 20:22:00,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:22:00,727 INFO L495 AbstractCegarLoop]: Abstraction has 19352 states and 94456 transitions. [2022-11-18 20:22:00,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:00,727 INFO L276 IsEmpty]: Start isEmpty. Operand 19352 states and 94456 transitions. [2022-11-18 20:22:00,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:22:00,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:22:00,792 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:22:00,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-11-18 20:22:00,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:00,994 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:22:00,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:00,994 INFO L85 PathProgramCache]: Analyzing trace with hash 2114875842, now seen corresponding path program 71 times [2022-11-18 20:22:00,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:00,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990403896] [2022-11-18 20:22:00,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:00,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:01,340 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 20:22:01,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:01,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990403896] [2022-11-18 20:22:01,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990403896] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:22:01,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974041646] [2022-11-18 20:22:01,342 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:22:01,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:01,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:22:01,343 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:22:01,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-11-18 20:22:01,621 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-18 20:22:01,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:22:01,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:22:01,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:22:01,936 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 20:22:01,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:22:02,184 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 20:22:02,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974041646] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:22:02,184 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:22:02,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 17 [2022-11-18 20:22:02,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041642196] [2022-11-18 20:22:02,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:22:02,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:22:02,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:02,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:22:02,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:22:02,186 INFO L87 Difference]: Start difference. First operand 19352 states and 94456 transitions. Second operand has 19 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:03,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:22:03,395 INFO L93 Difference]: Finished difference Result 20479 states and 98474 transitions. [2022-11-18 20:22:03,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:22:03,396 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 0 states have call successors, (0), 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 25 [2022-11-18 20:22:03,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:22:03,472 INFO L225 Difference]: With dead ends: 20479 [2022-11-18 20:22:03,472 INFO L226 Difference]: Without dead ends: 20420 [2022-11-18 20:22:03,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:22:03,472 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 112 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:22:03,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 70 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:22:03,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20420 states. [2022-11-18 20:22:04,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20420 to 19682. [2022-11-18 20:22:04,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19682 states, 19681 states have (on average 4.880290635638433) internal successors, (96049), 19681 states have internal predecessors, (96049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:04,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19682 states to 19682 states and 96049 transitions. [2022-11-18 20:22:04,518 INFO L78 Accepts]: Start accepts. Automaton has 19682 states and 96049 transitions. Word has length 25 [2022-11-18 20:22:04,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:22:04,519 INFO L495 AbstractCegarLoop]: Abstraction has 19682 states and 96049 transitions. [2022-11-18 20:22:04,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:04,520 INFO L276 IsEmpty]: Start isEmpty. Operand 19682 states and 96049 transitions. [2022-11-18 20:22:04,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:22:04,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:22:04,581 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:22:04,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-11-18 20:22:04,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:04,783 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:22:04,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:04,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1459841154, now seen corresponding path program 72 times [2022-11-18 20:22:04,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:04,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792091066] [2022-11-18 20:22:04,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:04,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:04,993 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 20:22:04,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:04,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792091066] [2022-11-18 20:22:04,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792091066] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:22:04,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681562865] [2022-11-18 20:22:04,993 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:22:04,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:04,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:22:04,994 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:22:04,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-11-18 20:22:05,264 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-18 20:22:05,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:22:05,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:22:05,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:22:05,501 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 20:22:05,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:22:05,817 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:22:05,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681562865] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:22:05,817 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:22:05,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 20 [2022-11-18 20:22:05,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133306821] [2022-11-18 20:22:05,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:22:05,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:22:05,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:05,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:22:05,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:22:05,819 INFO L87 Difference]: Start difference. First operand 19682 states and 96049 transitions. Second operand has 22 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 21 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:06,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:22:06,675 INFO L93 Difference]: Finished difference Result 21214 states and 102279 transitions. [2022-11-18 20:22:06,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:22:06,675 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 21 states have internal predecessors, (75), 0 states have call successors, (0), 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 25 [2022-11-18 20:22:06,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:22:06,762 INFO L225 Difference]: With dead ends: 21214 [2022-11-18 20:22:06,762 INFO L226 Difference]: Without dead ends: 21190 [2022-11-18 20:22:06,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:22:06,762 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 110 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:22:06,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 84 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 849 Invalid, 0 Unknown, 29 Unchecked, 0.7s Time] [2022-11-18 20:22:06,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21190 states. [2022-11-18 20:22:07,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21190 to 20308. [2022-11-18 20:22:07,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20308 states, 20307 states have (on average 4.895159304673266) internal successors, (99406), 20307 states have internal predecessors, (99406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:07,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20308 states to 20308 states and 99406 transitions. [2022-11-18 20:22:07,662 INFO L78 Accepts]: Start accepts. Automaton has 20308 states and 99406 transitions. Word has length 25 [2022-11-18 20:22:07,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:22:07,663 INFO L495 AbstractCegarLoop]: Abstraction has 20308 states and 99406 transitions. [2022-11-18 20:22:07,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 21 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:07,663 INFO L276 IsEmpty]: Start isEmpty. Operand 20308 states and 99406 transitions. [2022-11-18 20:22:07,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:22:07,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:22:07,729 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:22:07,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-11-18 20:22:07,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:07,929 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:22:07,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:07,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1846047332, now seen corresponding path program 73 times [2022-11-18 20:22:07,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:07,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356796691] [2022-11-18 20:22:07,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:07,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:08,178 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 20:22:08,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:08,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356796691] [2022-11-18 20:22:08,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356796691] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:22:08,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78505587] [2022-11-18 20:22:08,178 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:22:08,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:08,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:22:08,179 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:22:08,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-11-18 20:22:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:08,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:22:08,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:22:08,885 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 20:22:08,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:22:09,174 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 20:22:09,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78505587] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:22:09,174 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:22:09,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 18 [2022-11-18 20:22:09,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520242110] [2022-11-18 20:22:09,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:22:09,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:22:09,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:09,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:22:09,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:22:09,176 INFO L87 Difference]: Start difference. First operand 20308 states and 99406 transitions. Second operand has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:10,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:22:10,113 INFO L93 Difference]: Finished difference Result 21136 states and 102369 transitions. [2022-11-18 20:22:10,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:22:10,113 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 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 25 [2022-11-18 20:22:10,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:22:10,197 INFO L225 Difference]: With dead ends: 21136 [2022-11-18 20:22:10,198 INFO L226 Difference]: Without dead ends: 21122 [2022-11-18 20:22:10,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:22:10,198 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 145 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:22:10,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 76 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 20:22:10,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21122 states. [2022-11-18 20:22:10,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21122 to 20536. [2022-11-18 20:22:10,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20536 states, 20535 states have (on average 4.897881665449233) internal successors, (100578), 20535 states have internal predecessors, (100578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:11,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20536 states to 20536 states and 100578 transitions. [2022-11-18 20:22:11,062 INFO L78 Accepts]: Start accepts. Automaton has 20536 states and 100578 transitions. Word has length 25 [2022-11-18 20:22:11,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:22:11,063 INFO L495 AbstractCegarLoop]: Abstraction has 20536 states and 100578 transitions. [2022-11-18 20:22:11,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:11,063 INFO L276 IsEmpty]: Start isEmpty. Operand 20536 states and 100578 transitions. [2022-11-18 20:22:11,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:22:11,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:22:11,114 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:22:11,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-11-18 20:22:11,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:11,319 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:22:11,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:11,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1918689366, now seen corresponding path program 74 times [2022-11-18 20:22:11,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:11,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172582869] [2022-11-18 20:22:11,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:11,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:11,585 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 20:22:11,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:11,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172582869] [2022-11-18 20:22:11,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172582869] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:22:11,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007004896] [2022-11-18 20:22:11,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:22:11,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:11,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:22:11,591 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:22:11,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-11-18 20:22:11,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:22:11,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:22:11,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:22:11,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:22:12,354 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 20:22:12,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:22:12,710 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 20:22:12,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007004896] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:22:12,711 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:22:12,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 18 [2022-11-18 20:22:12,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100574373] [2022-11-18 20:22:12,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:22:12,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:22:12,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:12,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:22:12,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:22:12,713 INFO L87 Difference]: Start difference. First operand 20536 states and 100578 transitions. Second operand has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:14,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:22:14,702 INFO L93 Difference]: Finished difference Result 21532 states and 104081 transitions. [2022-11-18 20:22:14,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:22:14,703 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 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 25 [2022-11-18 20:22:14,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:22:14,803 INFO L225 Difference]: With dead ends: 21532 [2022-11-18 20:22:14,803 INFO L226 Difference]: Without dead ends: 21504 [2022-11-18 20:22:14,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:22:14,804 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 99 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 1352 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:22:14,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 122 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1352 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 20:22:14,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21504 states. [2022-11-18 20:22:15,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21504 to 20718. [2022-11-18 20:22:15,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20718 states, 20717 states have (on average 4.9031230390500555) internal successors, (101578), 20717 states have internal predecessors, (101578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:15,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20718 states to 20718 states and 101578 transitions. [2022-11-18 20:22:15,873 INFO L78 Accepts]: Start accepts. Automaton has 20718 states and 101578 transitions. Word has length 25 [2022-11-18 20:22:15,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:22:15,873 INFO L495 AbstractCegarLoop]: Abstraction has 20718 states and 101578 transitions. [2022-11-18 20:22:15,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:15,873 INFO L276 IsEmpty]: Start isEmpty. Operand 20718 states and 101578 transitions. [2022-11-18 20:22:15,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:22:15,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:22:15,948 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:22:15,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-11-18 20:22:16,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:16,148 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:22:16,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:16,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1410576938, now seen corresponding path program 75 times [2022-11-18 20:22:16,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:16,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178148630] [2022-11-18 20:22:16,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:16,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:16,458 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 20:22:16,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:16,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178148630] [2022-11-18 20:22:16,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178148630] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:22:16,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151413242] [2022-11-18 20:22:16,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:22:16,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:16,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:22:16,463 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:22:16,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-11-18 20:22:16,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 20:22:16,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:22:16,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:22:16,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:22:17,059 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 20:22:17,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:22:17,476 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:22:17,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151413242] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:22:17,477 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:22:17,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 20 [2022-11-18 20:22:17,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605590334] [2022-11-18 20:22:17,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:22:17,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:22:17,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:17,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:22:17,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:22:17,479 INFO L87 Difference]: Start difference. First operand 20718 states and 101578 transitions. Second operand has 22 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 21 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:18,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:22:18,670 INFO L93 Difference]: Finished difference Result 21760 states and 105037 transitions. [2022-11-18 20:22:18,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:22:18,670 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 21 states have internal predecessors, (75), 0 states have call successors, (0), 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 25 [2022-11-18 20:22:18,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:22:18,776 INFO L225 Difference]: With dead ends: 21760 [2022-11-18 20:22:18,776 INFO L226 Difference]: Without dead ends: 21746 [2022-11-18 20:22:18,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:22:18,776 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 161 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:22:18,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 97 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1028 Invalid, 0 Unknown, 53 Unchecked, 1.0s Time] [2022-11-18 20:22:18,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21746 states. [2022-11-18 20:22:19,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21746 to 20766. [2022-11-18 20:22:19,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20766 states, 20765 states have (on average 4.9073440886106425) internal successors, (101901), 20765 states have internal predecessors, (101901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:19,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20766 states to 20766 states and 101901 transitions. [2022-11-18 20:22:19,762 INFO L78 Accepts]: Start accepts. Automaton has 20766 states and 101901 transitions. Word has length 25 [2022-11-18 20:22:19,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:22:19,763 INFO L495 AbstractCegarLoop]: Abstraction has 20766 states and 101901 transitions. [2022-11-18 20:22:19,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 21 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:19,763 INFO L276 IsEmpty]: Start isEmpty. Operand 20766 states and 101901 transitions. [2022-11-18 20:22:19,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:22:19,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:22:19,818 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:22:19,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-11-18 20:22:20,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:20,019 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:22:20,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:20,019 INFO L85 PathProgramCache]: Analyzing trace with hash 310730268, now seen corresponding path program 76 times [2022-11-18 20:22:20,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:20,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427669868] [2022-11-18 20:22:20,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:20,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:20,246 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 20:22:20,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:20,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427669868] [2022-11-18 20:22:20,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427669868] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:22:20,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690081305] [2022-11-18 20:22:20,247 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:22:20,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:20,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:22:20,248 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:22:20,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-11-18 20:22:20,521 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:22:20,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:22:20,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:22:20,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:22:20,748 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 20:22:20,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:22:21,228 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 20:22:21,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690081305] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:22:21,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:22:21,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 17 [2022-11-18 20:22:21,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012806719] [2022-11-18 20:22:21,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:22:21,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:22:21,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:21,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:22:21,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:22:21,230 INFO L87 Difference]: Start difference. First operand 20766 states and 101901 transitions. Second operand has 19 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:22,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:22:22,592 INFO L93 Difference]: Finished difference Result 21814 states and 105997 transitions. [2022-11-18 20:22:22,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:22:22,592 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 0 states have call successors, (0), 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 25 [2022-11-18 20:22:22,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:22:22,682 INFO L225 Difference]: With dead ends: 21814 [2022-11-18 20:22:22,682 INFO L226 Difference]: Without dead ends: 21792 [2022-11-18 20:22:22,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:22:22,683 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 127 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:22:22,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 83 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 20:22:22,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21792 states. [2022-11-18 20:22:23,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21792 to 21102. [2022-11-18 20:22:23,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21102 states, 21101 states have (on average 4.9221363916402066) internal successors, (103862), 21101 states have internal predecessors, (103862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:23,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21102 states to 21102 states and 103862 transitions. [2022-11-18 20:22:23,608 INFO L78 Accepts]: Start accepts. Automaton has 21102 states and 103862 transitions. Word has length 25 [2022-11-18 20:22:23,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:22:23,609 INFO L495 AbstractCegarLoop]: Abstraction has 21102 states and 103862 transitions. [2022-11-18 20:22:23,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:23,609 INFO L276 IsEmpty]: Start isEmpty. Operand 21102 states and 103862 transitions. [2022-11-18 20:22:23,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:22:23,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:22:23,674 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:22:23,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-11-18 20:22:23,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:23,874 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:22:23,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:23,875 INFO L85 PathProgramCache]: Analyzing trace with hash -22481642, now seen corresponding path program 77 times [2022-11-18 20:22:23,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:23,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912308644] [2022-11-18 20:22:23,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:23,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:24,169 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 20:22:24,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:24,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912308644] [2022-11-18 20:22:24,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912308644] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:22:24,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360228107] [2022-11-18 20:22:24,170 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:22:24,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:24,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:22:24,172 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:22:24,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-11-18 20:22:24,495 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-18 20:22:24,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:22:24,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:22:24,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:22:24,781 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 20:22:24,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:22:25,077 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:22:25,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360228107] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:22:25,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:22:25,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 17 [2022-11-18 20:22:25,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511883082] [2022-11-18 20:22:25,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:22:25,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:22:25,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:25,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:22:25,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:22:25,079 INFO L87 Difference]: Start difference. First operand 21102 states and 103862 transitions. Second operand has 19 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:26,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:22:26,343 INFO L93 Difference]: Finished difference Result 22033 states and 106998 transitions. [2022-11-18 20:22:26,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:22:26,343 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 0 states have call successors, (0), 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 25 [2022-11-18 20:22:26,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:22:26,424 INFO L225 Difference]: With dead ends: 22033 [2022-11-18 20:22:26,424 INFO L226 Difference]: Without dead ends: 22012 [2022-11-18 20:22:26,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:22:26,425 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 130 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:22:26,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 88 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:22:26,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22012 states. [2022-11-18 20:22:27,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22012 to 21282. [2022-11-18 20:22:27,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21282 states, 21281 states have (on average 4.9241107090832195) internal successors, (104790), 21281 states have internal predecessors, (104790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:27,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21282 states to 21282 states and 104790 transitions. [2022-11-18 20:22:27,418 INFO L78 Accepts]: Start accepts. Automaton has 21282 states and 104790 transitions. Word has length 25 [2022-11-18 20:22:27,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:22:27,418 INFO L495 AbstractCegarLoop]: Abstraction has 21282 states and 104790 transitions. [2022-11-18 20:22:27,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:27,419 INFO L276 IsEmpty]: Start isEmpty. Operand 21282 states and 104790 transitions. [2022-11-18 20:22:27,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:22:27,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:22:27,471 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:22:27,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-11-18 20:22:27,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:27,672 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:22:27,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:27,672 INFO L85 PathProgramCache]: Analyzing trace with hash -677516330, now seen corresponding path program 78 times [2022-11-18 20:22:27,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:27,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044589154] [2022-11-18 20:22:27,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:27,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:27,895 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 20:22:27,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:27,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044589154] [2022-11-18 20:22:27,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044589154] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:22:27,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808451084] [2022-11-18 20:22:27,896 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:22:27,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:27,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:22:27,897 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:22:27,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-11-18 20:22:28,177 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-18 20:22:28,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:22:28,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:22:28,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:22:28,421 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 20:22:28,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:22:28,616 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 20:22:28,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808451084] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:22:28,616 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:22:28,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 16 [2022-11-18 20:22:28,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514476901] [2022-11-18 20:22:28,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:22:28,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:22:28,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:28,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:22:28,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:22:28,617 INFO L87 Difference]: Start difference. First operand 21282 states and 104790 transitions. Second operand has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:29,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:22:29,658 INFO L93 Difference]: Finished difference Result 22905 states and 110801 transitions. [2022-11-18 20:22:29,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:22:29,658 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 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 25 [2022-11-18 20:22:29,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:22:29,750 INFO L225 Difference]: With dead ends: 22905 [2022-11-18 20:22:29,750 INFO L226 Difference]: Without dead ends: 22830 [2022-11-18 20:22:29,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:22:29,750 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 126 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:22:29,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 89 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:22:29,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22830 states. [2022-11-18 20:22:30,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22830 to 21508. [2022-11-18 20:22:30,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21508 states, 21507 states have (on average 4.936253312874878) internal successors, (106164), 21507 states have internal predecessors, (106164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:30,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21508 states to 21508 states and 106164 transitions. [2022-11-18 20:22:30,922 INFO L78 Accepts]: Start accepts. Automaton has 21508 states and 106164 transitions. Word has length 25 [2022-11-18 20:22:30,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:22:30,922 INFO L495 AbstractCegarLoop]: Abstraction has 21508 states and 106164 transitions. [2022-11-18 20:22:30,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:30,922 INFO L276 IsEmpty]: Start isEmpty. Operand 21508 states and 106164 transitions. [2022-11-18 20:22:30,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:22:30,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:22:30,980 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:22:30,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-11-18 20:22:31,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2022-11-18 20:22:31,180 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:22:31,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:31,181 INFO L85 PathProgramCache]: Analyzing trace with hash -910348504, now seen corresponding path program 79 times [2022-11-18 20:22:31,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:31,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903085877] [2022-11-18 20:22:31,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:31,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:31,618 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 20:22:31,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:31,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903085877] [2022-11-18 20:22:31,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903085877] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:22:31,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781375138] [2022-11-18 20:22:31,618 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:22:31,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:31,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:22:31,620 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:22:31,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-11-18 20:22:31,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:31,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:22:31,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:22:32,242 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 20:22:32,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:22:32,686 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 20:22:32,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781375138] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:22:32,687 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:22:32,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 20 [2022-11-18 20:22:32,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355509227] [2022-11-18 20:22:32,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:22:32,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:22:32,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:32,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:22:32,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:22:32,688 INFO L87 Difference]: Start difference. First operand 21508 states and 106164 transitions. Second operand has 22 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 21 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:34,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:22:34,016 INFO L93 Difference]: Finished difference Result 23234 states and 112809 transitions. [2022-11-18 20:22:34,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:22:34,017 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 21 states have internal predecessors, (75), 0 states have call successors, (0), 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 25 [2022-11-18 20:22:34,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:22:34,111 INFO L225 Difference]: With dead ends: 23234 [2022-11-18 20:22:34,111 INFO L226 Difference]: Without dead ends: 23210 [2022-11-18 20:22:34,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:22:34,112 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 149 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 1548 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 244 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:22:34,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 147 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1548 Invalid, 0 Unknown, 244 Unchecked, 1.1s Time] [2022-11-18 20:22:34,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23210 states. [2022-11-18 20:22:34,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23210 to 22092. [2022-11-18 20:22:34,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22092 states, 22091 states have (on average 4.9304241546331085) internal successors, (108918), 22091 states have internal predecessors, (108918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:35,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22092 states to 22092 states and 108918 transitions. [2022-11-18 20:22:35,021 INFO L78 Accepts]: Start accepts. Automaton has 22092 states and 108918 transitions. Word has length 25 [2022-11-18 20:22:35,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:22:35,021 INFO L495 AbstractCegarLoop]: Abstraction has 22092 states and 108918 transitions. [2022-11-18 20:22:35,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 21 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:35,022 INFO L276 IsEmpty]: Start isEmpty. Operand 22092 states and 108918 transitions. [2022-11-18 20:22:35,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:22:35,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:22:35,077 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:22:35,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-11-18 20:22:35,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2022-11-18 20:22:35,278 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:22:35,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:35,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1655550244, now seen corresponding path program 80 times [2022-11-18 20:22:35,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:35,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533884118] [2022-11-18 20:22:35,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:35,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:35,512 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 20:22:35,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:35,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533884118] [2022-11-18 20:22:35,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533884118] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:22:35,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405211440] [2022-11-18 20:22:35,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:22:35,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:35,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:22:35,513 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:22:35,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-11-18 20:22:35,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:22:35,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:22:35,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:22:35,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:22:35,999 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 20:22:36,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:22:36,310 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 20:22:36,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405211440] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:22:36,311 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:22:36,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 16 [2022-11-18 20:22:36,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78227827] [2022-11-18 20:22:36,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:22:36,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:22:36,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:36,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:22:36,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:22:36,312 INFO L87 Difference]: Start difference. First operand 22092 states and 108918 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 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 20:22:37,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:22:37,490 INFO L93 Difference]: Finished difference Result 23210 states and 113239 transitions. [2022-11-18 20:22:37,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:22:37,490 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 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 25 [2022-11-18 20:22:37,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:22:37,579 INFO L225 Difference]: With dead ends: 23210 [2022-11-18 20:22:37,579 INFO L226 Difference]: Without dead ends: 23189 [2022-11-18 20:22:37,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:22:37,580 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 111 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:22:37,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 92 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1023 Invalid, 0 Unknown, 78 Unchecked, 0.8s Time] [2022-11-18 20:22:37,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23189 states. [2022-11-18 20:22:38,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23189 to 22549. [2022-11-18 20:22:38,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22549 states, 22548 states have (on average 4.931346460883448) internal successors, (111192), 22548 states have internal predecessors, (111192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:38,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22549 states to 22549 states and 111192 transitions. [2022-11-18 20:22:38,483 INFO L78 Accepts]: Start accepts. Automaton has 22549 states and 111192 transitions. Word has length 25 [2022-11-18 20:22:38,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:22:38,483 INFO L495 AbstractCegarLoop]: Abstraction has 22549 states and 111192 transitions. [2022-11-18 20:22:38,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 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 20:22:38,483 INFO L276 IsEmpty]: Start isEmpty. Operand 22549 states and 111192 transitions. [2022-11-18 20:22:38,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:22:38,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:22:38,542 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:22:38,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-11-18 20:22:38,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2022-11-18 20:22:38,743 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:22:38,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:38,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1684230278, now seen corresponding path program 81 times [2022-11-18 20:22:38,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:38,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771454414] [2022-11-18 20:22:38,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:38,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:38,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:38,935 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 20:22:38,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:38,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771454414] [2022-11-18 20:22:38,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771454414] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:22:38,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852995951] [2022-11-18 20:22:38,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:22:38,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:38,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:22:38,937 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:22:38,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-11-18 20:22:39,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 20:22:39,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:22:39,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:22:39,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:22:39,467 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 20:22:39,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:22:39,811 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 20:22:39,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852995951] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:22:39,811 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:22:39,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 18 [2022-11-18 20:22:39,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105803278] [2022-11-18 20:22:39,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:22:39,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:22:39,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:39,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:22:39,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:22:39,812 INFO L87 Difference]: Start difference. First operand 22549 states and 111192 transitions. Second operand has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:40,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:22:40,686 INFO L93 Difference]: Finished difference Result 23560 states and 114894 transitions. [2022-11-18 20:22:40,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:22:40,687 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 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 25 [2022-11-18 20:22:40,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:22:40,784 INFO L225 Difference]: With dead ends: 23560 [2022-11-18 20:22:40,784 INFO L226 Difference]: Without dead ends: 23546 [2022-11-18 20:22:40,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:22:40,784 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 159 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:22:40,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 86 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 883 Invalid, 0 Unknown, 107 Unchecked, 0.7s Time] [2022-11-18 20:22:41,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23546 states. [2022-11-18 20:22:41,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23546 to 22458. [2022-11-18 20:22:41,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22458 states, 22457 states have (on average 4.933561918332813) internal successors, (110793), 22457 states have internal predecessors, (110793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:41,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22458 states to 22458 states and 110793 transitions. [2022-11-18 20:22:41,668 INFO L78 Accepts]: Start accepts. Automaton has 22458 states and 110793 transitions. Word has length 25 [2022-11-18 20:22:41,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:22:41,668 INFO L495 AbstractCegarLoop]: Abstraction has 22458 states and 110793 transitions. [2022-11-18 20:22:41,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:41,669 INFO L276 IsEmpty]: Start isEmpty. Operand 22458 states and 110793 transitions. [2022-11-18 20:22:41,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:22:41,725 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:22:41,725 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:22:41,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-11-18 20:22:41,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-11-18 20:22:41,926 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:22:41,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:41,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1978159934, now seen corresponding path program 82 times [2022-11-18 20:22:41,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:41,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917361279] [2022-11-18 20:22:41,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:41,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:42,340 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 20:22:42,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:42,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917361279] [2022-11-18 20:22:42,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917361279] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:22:42,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353557028] [2022-11-18 20:22:42,341 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:22:42,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:42,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:22:42,347 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:22:42,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-11-18 20:22:42,627 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:22:42,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:22:42,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:22:42,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:22:42,871 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 20:22:42,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:22:43,192 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 20:22:43,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353557028] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:22:43,193 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:22:43,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 18 [2022-11-18 20:22:43,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832560537] [2022-11-18 20:22:43,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:22:43,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:22:43,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:43,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:22:43,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:22:43,194 INFO L87 Difference]: Start difference. First operand 22458 states and 110793 transitions. Second operand has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:44,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:22:44,218 INFO L93 Difference]: Finished difference Result 23558 states and 115068 transitions. [2022-11-18 20:22:44,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:22:44,218 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 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 25 [2022-11-18 20:22:44,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:22:44,341 INFO L225 Difference]: With dead ends: 23558 [2022-11-18 20:22:44,341 INFO L226 Difference]: Without dead ends: 23544 [2022-11-18 20:22:44,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:22:44,341 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 131 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:22:44,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 93 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 970 Invalid, 0 Unknown, 82 Unchecked, 0.8s Time] [2022-11-18 20:22:44,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23544 states. [2022-11-18 20:22:45,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23544 to 22964. [2022-11-18 20:22:45,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22964 states, 22963 states have (on average 4.933545268475373) internal successors, (113289), 22963 states have internal predecessors, (113289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:45,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22964 states to 22964 states and 113289 transitions. [2022-11-18 20:22:45,346 INFO L78 Accepts]: Start accepts. Automaton has 22964 states and 113289 transitions. Word has length 25 [2022-11-18 20:22:45,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:22:45,347 INFO L495 AbstractCegarLoop]: Abstraction has 22964 states and 113289 transitions. [2022-11-18 20:22:45,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:45,347 INFO L276 IsEmpty]: Start isEmpty. Operand 22964 states and 113289 transitions. [2022-11-18 20:22:45,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:22:45,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:22:45,413 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:22:45,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-11-18 20:22:45,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-11-18 20:22:45,615 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:22:45,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:45,615 INFO L85 PathProgramCache]: Analyzing trace with hash 611144898, now seen corresponding path program 83 times [2022-11-18 20:22:45,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:45,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683283905] [2022-11-18 20:22:45,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:45,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:45,822 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 20:22:45,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:45,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683283905] [2022-11-18 20:22:45,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683283905] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:22:45,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617880756] [2022-11-18 20:22:45,823 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:22:45,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:45,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:22:45,825 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:22:45,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-11-18 20:22:46,163 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:22:46,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:22:46,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:22:46,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:22:46,396 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 20:22:46,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:22:46,698 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 20:22:46,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617880756] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:22:46,698 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:22:46,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 18 [2022-11-18 20:22:46,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764479817] [2022-11-18 20:22:46,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:22:46,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:22:46,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:46,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:22:46,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:22:46,699 INFO L87 Difference]: Start difference. First operand 22964 states and 113289 transitions. Second operand has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:47,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:22:47,586 INFO L93 Difference]: Finished difference Result 23952 states and 116944 transitions. [2022-11-18 20:22:47,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:22:47,586 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 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 25 [2022-11-18 20:22:47,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:22:47,684 INFO L225 Difference]: With dead ends: 23952 [2022-11-18 20:22:47,685 INFO L226 Difference]: Without dead ends: 23908 [2022-11-18 20:22:47,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:22:47,685 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 144 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:22:47,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 72 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 695 Invalid, 0 Unknown, 52 Unchecked, 0.5s Time] [2022-11-18 20:22:47,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23908 states. [2022-11-18 20:22:48,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23908 to 23354. [2022-11-18 20:22:48,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23354 states, 23353 states have (on average 4.931015287115145) internal successors, (115154), 23353 states have internal predecessors, (115154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:48,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23354 states to 23354 states and 115154 transitions. [2022-11-18 20:22:48,667 INFO L78 Accepts]: Start accepts. Automaton has 23354 states and 115154 transitions. Word has length 25 [2022-11-18 20:22:48,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:22:48,668 INFO L495 AbstractCegarLoop]: Abstraction has 23354 states and 115154 transitions. [2022-11-18 20:22:48,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:48,668 INFO L276 IsEmpty]: Start isEmpty. Operand 23354 states and 115154 transitions. [2022-11-18 20:22:48,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:22:48,725 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:22:48,726 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:22:48,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-11-18 20:22:48,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2022-11-18 20:22:48,926 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:22:48,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:48,927 INFO L85 PathProgramCache]: Analyzing trace with hash -465370068, now seen corresponding path program 84 times [2022-11-18 20:22:48,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:48,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643283834] [2022-11-18 20:22:48,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:48,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:49,155 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 20:22:49,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:49,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643283834] [2022-11-18 20:22:49,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643283834] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:22:49,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115665989] [2022-11-18 20:22:49,156 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:22:49,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:49,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:22:49,157 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:22:49,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-11-18 20:22:49,432 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-18 20:22:49,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:22:49,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:22:49,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:22:49,668 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 20:22:49,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:22:50,084 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 20:22:50,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115665989] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:22:50,084 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:22:50,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 20 [2022-11-18 20:22:50,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529599168] [2022-11-18 20:22:50,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:22:50,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:22:50,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:50,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:22:50,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:22:50,085 INFO L87 Difference]: Start difference. First operand 23354 states and 115154 transitions. Second operand has 22 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 21 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:51,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:22:51,108 INFO L93 Difference]: Finished difference Result 24276 states and 118444 transitions. [2022-11-18 20:22:51,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:22:51,109 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 21 states have internal predecessors, (75), 0 states have call successors, (0), 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 25 [2022-11-18 20:22:51,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:22:51,211 INFO L225 Difference]: With dead ends: 24276 [2022-11-18 20:22:51,211 INFO L226 Difference]: Without dead ends: 24254 [2022-11-18 20:22:51,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:22:51,211 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 147 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 1366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 223 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:22:51,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 124 Invalid, 1366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1136 Invalid, 0 Unknown, 223 Unchecked, 0.8s Time] [2022-11-18 20:22:51,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24254 states. [2022-11-18 20:22:52,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24254 to 23718. [2022-11-18 20:22:52,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23718 states, 23717 states have (on average 4.926592739385251) internal successors, (116844), 23717 states have internal predecessors, (116844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:52,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23718 states to 23718 states and 116844 transitions. [2022-11-18 20:22:52,322 INFO L78 Accepts]: Start accepts. Automaton has 23718 states and 116844 transitions. Word has length 25 [2022-11-18 20:22:52,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:22:52,322 INFO L495 AbstractCegarLoop]: Abstraction has 23718 states and 116844 transitions. [2022-11-18 20:22:52,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 21 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:52,322 INFO L276 IsEmpty]: Start isEmpty. Operand 23718 states and 116844 transitions. [2022-11-18 20:22:52,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:22:52,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:22:52,601 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:22:52,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-11-18 20:22:52,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2022-11-18 20:22:52,801 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-18 20:22:52,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:52,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1434432118, now seen corresponding path program 85 times [2022-11-18 20:22:52,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:52,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813920346] [2022-11-18 20:22:52,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:52,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:53,100 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 20:22:53,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:53,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813920346] [2022-11-18 20:22:53,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813920346] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:22:53,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459699690] [2022-11-18 20:22:53,101 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:22:53,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:53,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:22:53,103 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:22:53,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc943bc-b5a8-4bc1-ad48-fa92e3b1678a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-11-18 20:22:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:53,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:22:53,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:22:53,750 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 20:22:53,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:22:53,983 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:22:53,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459699690] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:22:53,984 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:22:53,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 18 [2022-11-18 20:22:53,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108393820] [2022-11-18 20:22:53,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:22:53,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:22:53,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:53,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:22:53,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:22:53,985 INFO L87 Difference]: Start difference. First operand 23718 states and 116844 transitions. Second operand has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:55,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:22:55,043 INFO L93 Difference]: Finished difference Result 24462 states and 119332 transitions. [2022-11-18 20:22:55,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:22:55,044 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 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 25 [2022-11-18 20:22:55,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:22:55,167 INFO L225 Difference]: With dead ends: 24462 [2022-11-18 20:22:55,167 INFO L226 Difference]: Without dead ends: 24428 [2022-11-18 20:22:55,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:22:55,167 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 105 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:22:55,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 96 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]