./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a --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 3f696f3d7a078e1a0d9bb5ce793945c7092990826a45e57529562474d0b18f4a --- 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-b5237d8 [2022-11-21 16:56:16,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:56:16,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:56:17,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:56:17,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:56:17,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:56:17,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:56:17,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:56:17,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:56:17,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:56:17,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:56:17,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:56:17,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:56:17,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:56:17,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:56:17,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:56:17,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:56:17,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:56:17,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:56:17,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:56:17,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:56:17,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:56:17,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:56:17,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:56:17,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:56:17,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:56:17,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:56:17,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:56:17,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:56:17,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:56:17,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:56:17,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:56:17,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:56:17,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:56:17,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:56:17,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:56:17,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:56:17,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:56:17,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:56:17,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:56:17,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:56:17,052 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-21 16:56:17,072 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:56:17,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:56:17,072 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:56:17,073 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:56:17,073 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:56:17,073 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:56:17,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:56:17,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:56:17,074 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:56:17,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:56:17,075 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:56:17,075 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:56:17,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:56:17,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:56:17,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:56:17,076 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 16:56:17,076 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 16:56:17,076 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 16:56:17,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:56:17,076 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 16:56:17,077 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:56:17,077 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:56:17,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:56:17,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:56:17,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:56:17,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:56:17,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:56:17,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:56:17,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:56:17,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:56:17,078 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_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f696f3d7a078e1a0d9bb5ce793945c7092990826a45e57529562474d0b18f4a [2022-11-21 16:56:17,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:56:17,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:56:17,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:56:17,345 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:56:17,345 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:56:17,347 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2022-11-21 16:56:20,396 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:56:20,730 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:56:20,733 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2022-11-21 16:56:20,740 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/data/46e177bc3/4cda4e63692044f2a7f1f52e4a6fcccd/FLAGd06ffd62b [2022-11-21 16:56:20,763 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/data/46e177bc3/4cda4e63692044f2a7f1f52e4a6fcccd [2022-11-21 16:56:20,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:56:20,772 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:56:20,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:56:20,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:56:20,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:56:20,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:56:20" (1/1) ... [2022-11-21 16:56:20,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532be2b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:56:20, skipping insertion in model container [2022-11-21 16:56:20,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:56:20" (1/1) ... [2022-11-21 16:56:20,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:56:20,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:56:21,107 WARN L237 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_2b280e36-68a8-4057-b674-c607cc78098c/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c[3027,3040] [2022-11-21 16:56:21,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:56:21,130 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:56:21,177 WARN L237 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_2b280e36-68a8-4057-b674-c607cc78098c/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c[3027,3040] [2022-11-21 16:56:21,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:56:21,195 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:56:21,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:56:21 WrapperNode [2022-11-21 16:56:21,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:56:21,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:56:21,200 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:56:21,200 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:56:21,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:56:21" (1/1) ... [2022-11-21 16:56:21,233 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:56:21" (1/1) ... [2022-11-21 16:56:21,271 INFO L138 Inliner]: procedures = 22, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 143 [2022-11-21 16:56:21,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:56:21,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:56:21,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:56:21,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:56:21,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:56:21" (1/1) ... [2022-11-21 16:56:21,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:56:21" (1/1) ... [2022-11-21 16:56:21,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:56:21" (1/1) ... [2022-11-21 16:56:21,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:56:21" (1/1) ... [2022-11-21 16:56:21,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:56:21" (1/1) ... [2022-11-21 16:56:21,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:56:21" (1/1) ... [2022-11-21 16:56:21,308 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:56:21" (1/1) ... [2022-11-21 16:56:21,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:56:21" (1/1) ... [2022-11-21 16:56:21,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:56:21,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:56:21,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:56:21,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:56:21,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:56:21" (1/1) ... [2022-11-21 16:56:21,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:56:21,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:56:21,348 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:56:21,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:56:21,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:56:21,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 16:56:21,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 16:56:21,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 16:56:21,399 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 16:56:21,399 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 16:56:21,399 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 16:56:21,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:56:21,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:56:21,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:56:21,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 16:56:21,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 16:56:21,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:56:21,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:56:21,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:56:21,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:56:21,403 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:56:21,509 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:56:21,512 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:56:21,885 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:56:22,054 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:56:22,054 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-21 16:56:22,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:56:22 BoogieIcfgContainer [2022-11-21 16:56:22,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:56:22,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:56:22,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:56:22,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:56:22,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:56:20" (1/3) ... [2022-11-21 16:56:22,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@651a55fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:56:22, skipping insertion in model container [2022-11-21 16:56:22,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:56:21" (2/3) ... [2022-11-21 16:56:22,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@651a55fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:56:22, skipping insertion in model container [2022-11-21 16:56:22,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:56:22" (3/3) ... [2022-11-21 16:56:22,071 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2022-11-21 16:56:22,096 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:56:22,096 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-21 16:56:22,096 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:56:22,174 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 16:56:22,213 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-21 16:56:22,228 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 128 places, 125 transitions, 274 flow [2022-11-21 16:56:22,231 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 128 places, 125 transitions, 274 flow [2022-11-21 16:56:22,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 125 transitions, 274 flow [2022-11-21 16:56:22,335 INFO L130 PetriNetUnfolder]: 7/122 cut-off events. [2022-11-21 16:56:22,335 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 16:56:22,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 122 events. 7/122 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 131 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2022-11-21 16:56:22,349 INFO L119 LiptonReduction]: Number of co-enabled transitions 1598 [2022-11-21 16:56:28,300 INFO L134 LiptonReduction]: Checked pairs total: 2811 [2022-11-21 16:56:28,301 INFO L136 LiptonReduction]: Total number of compositions: 118 [2022-11-21 16:56:28,314 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 39 transitions, 102 flow [2022-11-21 16:56:28,381 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 255 states, 241 states have (on average 3.066390041493776) internal successors, (739), 254 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:28,404 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:56:28,412 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;@599a2d89, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:56:28,412 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-21 16:56:28,415 INFO L276 IsEmpty]: Start isEmpty. Operand has 255 states, 241 states have (on average 3.066390041493776) internal successors, (739), 254 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:28,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-21 16:56:28,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:28,422 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-21 16:56:28,423 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)] === [2022-11-21 16:56:28,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:28,429 INFO L85 PathProgramCache]: Analyzing trace with hash 541, now seen corresponding path program 1 times [2022-11-21 16:56:28,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:28,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339858975] [2022-11-21 16:56:28,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:28,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:28,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:28,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:28,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339858975] [2022-11-21 16:56:28,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339858975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:28,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:28,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-21 16:56:28,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857342456] [2022-11-21 16:56:28,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:28,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 16:56:28,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:28,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 16:56:28,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 16:56:28,593 INFO L87 Difference]: Start difference. First operand has 255 states, 241 states have (on average 3.066390041493776) internal successors, (739), 254 states have internal predecessors, (739), 0 states have call successors, (0), 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) [2022-11-21 16:56:28,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:28,702 INFO L93 Difference]: Finished difference Result 252 states and 736 transitions. [2022-11-21 16:56:28,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 16:56:28,704 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 [2022-11-21 16:56:28,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:28,725 INFO L225 Difference]: With dead ends: 252 [2022-11-21 16:56:28,726 INFO L226 Difference]: Without dead ends: 252 [2022-11-21 16:56:28,727 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 [2022-11-21 16:56:28,732 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:56:28,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:56:28,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-11-21 16:56:28,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2022-11-21 16:56:28,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 241 states have (on average 3.0539419087136928) internal successors, (736), 251 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:28,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 736 transitions. [2022-11-21 16:56:28,812 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 736 transitions. Word has length 1 [2022-11-21 16:56:28,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:28,812 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 736 transitions. [2022-11-21 16:56:28,813 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) [2022-11-21 16:56:28,813 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 736 transitions. [2022-11-21 16:56:28,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 16:56:28,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:28,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 16:56:28,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:56:28,814 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-21 16:56:28,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:28,815 INFO L85 PathProgramCache]: Analyzing trace with hash 531389, now seen corresponding path program 1 times [2022-11-21 16:56:28,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:28,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000626809] [2022-11-21 16:56:28,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:28,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:29,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:29,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:29,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000626809] [2022-11-21 16:56:29,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000626809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:29,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:29,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 16:56:29,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128089451] [2022-11-21 16:56:29,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:29,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:56:29,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:29,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:56:29,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:56:29,194 INFO L87 Difference]: Start difference. First operand 252 states and 736 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) [2022-11-21 16:56:29,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:29,261 INFO L93 Difference]: Finished difference Result 240 states and 708 transitions. [2022-11-21 16:56:29,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:56:29,262 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 [2022-11-21 16:56:29,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:29,265 INFO L225 Difference]: With dead ends: 240 [2022-11-21 16:56:29,265 INFO L226 Difference]: Without dead ends: 240 [2022-11-21 16:56:29,266 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 [2022-11-21 16:56:29,267 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:56:29,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 4 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:56:29,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-21 16:56:29,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2022-11-21 16:56:29,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 231 states have (on average 3.064935064935065) internal successors, (708), 239 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:29,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 708 transitions. [2022-11-21 16:56:29,287 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 708 transitions. Word has length 3 [2022-11-21 16:56:29,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:29,288 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 708 transitions. [2022-11-21 16:56:29,288 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) [2022-11-21 16:56:29,288 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 708 transitions. [2022-11-21 16:56:29,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 16:56:29,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:29,289 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 16:56:29,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:56:29,290 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-21 16:56:29,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:29,291 INFO L85 PathProgramCache]: Analyzing trace with hash 531390, now seen corresponding path program 1 times [2022-11-21 16:56:29,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:29,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821569724] [2022-11-21 16:56:29,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:29,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:29,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:29,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:29,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821569724] [2022-11-21 16:56:29,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821569724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:29,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:29,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 16:56:29,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456999] [2022-11-21 16:56:29,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:29,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:56:29,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:29,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:56:29,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:56:29,423 INFO L87 Difference]: Start difference. First operand 240 states and 708 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) [2022-11-21 16:56:29,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:29,469 INFO L93 Difference]: Finished difference Result 228 states and 680 transitions. [2022-11-21 16:56:29,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:56:29,470 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 [2022-11-21 16:56:29,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:29,475 INFO L225 Difference]: With dead ends: 228 [2022-11-21 16:56:29,476 INFO L226 Difference]: Without dead ends: 228 [2022-11-21 16:56:29,477 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 [2022-11-21 16:56:29,480 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:56:29,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 4 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:56:29,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-11-21 16:56:29,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2022-11-21 16:56:29,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 221 states have (on average 3.076923076923077) internal successors, (680), 227 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:29,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 680 transitions. [2022-11-21 16:56:29,509 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 680 transitions. Word has length 3 [2022-11-21 16:56:29,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:29,509 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 680 transitions. [2022-11-21 16:56:29,509 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) [2022-11-21 16:56:29,509 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 680 transitions. [2022-11-21 16:56:29,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 16:56:29,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:29,510 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 16:56:29,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:56:29,511 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)] === [2022-11-21 16:56:29,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:29,512 INFO L85 PathProgramCache]: Analyzing trace with hash 510679335, now seen corresponding path program 1 times [2022-11-21 16:56:29,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:29,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555516057] [2022-11-21 16:56:29,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:29,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:29,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:29,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:29,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555516057] [2022-11-21 16:56:29,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555516057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:29,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:29,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 16:56:29,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491357005] [2022-11-21 16:56:29,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:29,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:56:29,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:29,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:56:29,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:56:29,668 INFO L87 Difference]: Start difference. First operand 228 states and 680 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) [2022-11-21 16:56:29,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:29,715 INFO L93 Difference]: Finished difference Result 210 states and 629 transitions. [2022-11-21 16:56:29,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:56:29,716 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 [2022-11-21 16:56:29,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:29,718 INFO L225 Difference]: With dead ends: 210 [2022-11-21 16:56:29,719 INFO L226 Difference]: Without dead ends: 210 [2022-11-21 16:56:29,720 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 [2022-11-21 16:56:29,722 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:56:29,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 4 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:56:29,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-11-21 16:56:29,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2022-11-21 16:56:29,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 205 states have (on average 3.0682926829268293) internal successors, (629), 209 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:29,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 629 transitions. [2022-11-21 16:56:29,748 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 629 transitions. Word has length 5 [2022-11-21 16:56:29,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:29,751 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 629 transitions. [2022-11-21 16:56:29,751 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) [2022-11-21 16:56:29,752 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 629 transitions. [2022-11-21 16:56:29,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 16:56:29,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:29,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 16:56:29,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:56:29,753 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)] === [2022-11-21 16:56:29,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:29,754 INFO L85 PathProgramCache]: Analyzing trace with hash 510679336, now seen corresponding path program 1 times [2022-11-21 16:56:29,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:29,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163222036] [2022-11-21 16:56:29,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:29,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:29,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:29,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:29,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163222036] [2022-11-21 16:56:29,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163222036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:29,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:29,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 16:56:29,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946832927] [2022-11-21 16:56:29,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:29,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:56:29,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:29,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:56:29,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:56:29,993 INFO L87 Difference]: Start difference. First operand 210 states and 629 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) [2022-11-21 16:56:30,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:30,032 INFO L93 Difference]: Finished difference Result 192 states and 578 transitions. [2022-11-21 16:56:30,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:56:30,038 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 [2022-11-21 16:56:30,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:30,040 INFO L225 Difference]: With dead ends: 192 [2022-11-21 16:56:30,040 INFO L226 Difference]: Without dead ends: 192 [2022-11-21 16:56:30,041 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 [2022-11-21 16:56:30,042 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 4 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 [2022-11-21 16:56:30,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 4 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:56:30,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-21 16:56:30,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2022-11-21 16:56:30,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 189 states have (on average 3.058201058201058) internal successors, (578), 191 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:30,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 578 transitions. [2022-11-21 16:56:30,052 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 578 transitions. Word has length 5 [2022-11-21 16:56:30,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:30,052 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 578 transitions. [2022-11-21 16:56:30,052 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) [2022-11-21 16:56:30,053 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 578 transitions. [2022-11-21 16:56:30,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 16:56:30,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:30,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:30,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:56:30,054 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)] === [2022-11-21 16:56:30,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:30,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1136583594, now seen corresponding path program 1 times [2022-11-21 16:56:30,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:30,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800288577] [2022-11-21 16:56:30,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:30,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:30,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:30,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:30,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800288577] [2022-11-21 16:56:30,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800288577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:30,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:30,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 16:56:30,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152519904] [2022-11-21 16:56:30,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:30,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:56:30,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:30,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:56:30,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:56:30,280 INFO L87 Difference]: Start difference. First operand 192 states and 578 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2022-11-21 16:56:30,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:30,322 INFO L93 Difference]: Finished difference Result 160 states and 466 transitions. [2022-11-21 16:56:30,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:56:30,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 [2022-11-21 16:56:30,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:30,325 INFO L225 Difference]: With dead ends: 160 [2022-11-21 16:56:30,325 INFO L226 Difference]: Without dead ends: 160 [2022-11-21 16:56:30,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:56:30,330 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:56:30,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:56:30,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-11-21 16:56:30,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2022-11-21 16:56:30,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 158 states have (on average 2.949367088607595) internal successors, (466), 159 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:30,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 466 transitions. [2022-11-21 16:56:30,338 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 466 transitions. Word has length 7 [2022-11-21 16:56:30,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:30,339 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 466 transitions. [2022-11-21 16:56:30,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2022-11-21 16:56:30,339 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 466 transitions. [2022-11-21 16:56:30,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 16:56:30,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:30,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:30,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:56:30,341 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)] === [2022-11-21 16:56:30,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:30,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1136583596, now seen corresponding path program 1 times [2022-11-21 16:56:30,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:30,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105118284] [2022-11-21 16:56:30,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:30,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:30,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:30,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:30,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105118284] [2022-11-21 16:56:30,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105118284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:30,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:30,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:56:30,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172323609] [2022-11-21 16:56:30,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:30,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:56:30,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:30,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:56:30,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:56:30,610 INFO L87 Difference]: Start difference. First operand 160 states and 466 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) [2022-11-21 16:56:30,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:30,643 INFO L93 Difference]: Finished difference Result 128 states and 354 transitions. [2022-11-21 16:56:30,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:56:30,643 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 [2022-11-21 16:56:30,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:30,644 INFO L225 Difference]: With dead ends: 128 [2022-11-21 16:56:30,645 INFO L226 Difference]: Without dead ends: 128 [2022-11-21 16:56:30,645 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 [2022-11-21 16:56:30,646 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:56:30,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 4 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:56:30,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-21 16:56:30,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2022-11-21 16:56:30,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 2.7874015748031495) internal successors, (354), 127 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:30,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 354 transitions. [2022-11-21 16:56:30,653 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 354 transitions. Word has length 7 [2022-11-21 16:56:30,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:30,653 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 354 transitions. [2022-11-21 16:56:30,653 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) [2022-11-21 16:56:30,653 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 354 transitions. [2022-11-21 16:56:30,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-21 16:56:30,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:30,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:30,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:56:30,657 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)] === [2022-11-21 16:56:30,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:30,658 INFO L85 PathProgramCache]: Analyzing trace with hash 133352113, now seen corresponding path program 1 times [2022-11-21 16:56:30,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:30,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314744044] [2022-11-21 16:56:30,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:30,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:30,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:30,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:30,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:30,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314744044] [2022-11-21 16:56:30,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314744044] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:30,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:30,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:56:30,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651943522] [2022-11-21 16:56:30,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:30,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:56:30,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:30,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:56:30,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:56:30,907 INFO L87 Difference]: Start difference. First operand 128 states and 354 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:31,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:31,031 INFO L93 Difference]: Finished difference Result 100 states and 270 transitions. [2022-11-21 16:56:31,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:56:31,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-21 16:56:31,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:31,032 INFO L225 Difference]: With dead ends: 100 [2022-11-21 16:56:31,033 INFO L226 Difference]: Without dead ends: 100 [2022-11-21 16:56:31,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:56:31,033 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:56:31,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:56:31,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-21 16:56:31,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-11-21 16:56:31,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 2.727272727272727) internal successors, (270), 99 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:31,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 270 transitions. [2022-11-21 16:56:31,040 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 270 transitions. Word has length 18 [2022-11-21 16:56:31,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:31,041 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 270 transitions. [2022-11-21 16:56:31,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:31,041 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 270 transitions. [2022-11-21 16:56:31,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-21 16:56:31,048 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:31,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:31,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:56:31,048 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)] === [2022-11-21 16:56:31,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:31,049 INFO L85 PathProgramCache]: Analyzing trace with hash -989599209, now seen corresponding path program 2 times [2022-11-21 16:56:31,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:31,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710285824] [2022-11-21 16:56:31,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:31,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:31,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:31,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:31,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710285824] [2022-11-21 16:56:31,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710285824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:31,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:31,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:56:31,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859786449] [2022-11-21 16:56:31,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:31,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:56:31,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:31,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:56:31,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:56:31,288 INFO L87 Difference]: Start difference. First operand 100 states and 270 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:31,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:31,426 INFO L93 Difference]: Finished difference Result 108 states and 290 transitions. [2022-11-21 16:56:31,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:56:31,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-21 16:56:31,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:31,428 INFO L225 Difference]: With dead ends: 108 [2022-11-21 16:56:31,428 INFO L226 Difference]: Without dead ends: 108 [2022-11-21 16:56:31,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:56:31,429 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:56:31,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:56:31,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-21 16:56:31,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-11-21 16:56:31,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.710280373831776) internal successors, (290), 107 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:31,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 290 transitions. [2022-11-21 16:56:31,434 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 290 transitions. Word has length 18 [2022-11-21 16:56:31,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:31,436 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 290 transitions. [2022-11-21 16:56:31,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:31,437 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 290 transitions. [2022-11-21 16:56:31,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-21 16:56:31,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:31,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:31,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:56:31,438 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)] === [2022-11-21 16:56:31,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:31,439 INFO L85 PathProgramCache]: Analyzing trace with hash -583693159, now seen corresponding path program 3 times [2022-11-21 16:56:31,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:31,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006790991] [2022-11-21 16:56:31,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:31,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:31,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:31,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:31,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006790991] [2022-11-21 16:56:31,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006790991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:31,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:31,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:56:31,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317269630] [2022-11-21 16:56:31,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:31,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:56:31,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:31,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:56:31,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:56:31,672 INFO L87 Difference]: Start difference. First operand 108 states and 290 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:31,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:31,864 INFO L93 Difference]: Finished difference Result 182 states and 489 transitions. [2022-11-21 16:56:31,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:56:31,865 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-21 16:56:31,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:31,866 INFO L225 Difference]: With dead ends: 182 [2022-11-21 16:56:31,866 INFO L226 Difference]: Without dead ends: 128 [2022-11-21 16:56:31,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:56:31,867 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 28 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:56:31,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 10 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:56:31,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-21 16:56:31,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2022-11-21 16:56:31,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 2.6929133858267718) internal successors, (342), 127 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:31,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 342 transitions. [2022-11-21 16:56:31,876 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 342 transitions. Word has length 18 [2022-11-21 16:56:31,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:31,876 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 342 transitions. [2022-11-21 16:56:31,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:31,877 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 342 transitions. [2022-11-21 16:56:31,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-21 16:56:31,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:31,878 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] [2022-11-21 16:56:31,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:56:31,878 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)] === [2022-11-21 16:56:31,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:31,880 INFO L85 PathProgramCache]: Analyzing trace with hash 897520178, now seen corresponding path program 1 times [2022-11-21 16:56:31,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:31,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148046377] [2022-11-21 16:56:31,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:31,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:32,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:32,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:32,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148046377] [2022-11-21 16:56:32,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148046377] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:56:32,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773741825] [2022-11-21 16:56:32,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:32,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:56:32,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:56:32,198 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:56:32,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:56:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:32,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 16:56:32,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:56:32,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:32,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:56:32,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:32,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773741825] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:56:32,686 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:56:32,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-11-21 16:56:32,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730975573] [2022-11-21 16:56:32,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:56:32,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:56:32,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:32,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:56:32,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:56:32,688 INFO L87 Difference]: Start difference. First operand 128 states and 342 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:32,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:32,955 INFO L93 Difference]: Finished difference Result 140 states and 360 transitions. [2022-11-21 16:56:32,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:56:32,956 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-21 16:56:32,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:32,957 INFO L225 Difference]: With dead ends: 140 [2022-11-21 16:56:32,958 INFO L226 Difference]: Without dead ends: 120 [2022-11-21 16:56:32,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:56:32,959 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 43 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:56:32,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 0 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:56:32,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-21 16:56:32,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2022-11-21 16:56:32,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 2.5210084033613445) internal successors, (300), 119 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:32,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 300 transitions. [2022-11-21 16:56:32,964 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 300 transitions. Word has length 20 [2022-11-21 16:56:32,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:32,964 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 300 transitions. [2022-11-21 16:56:32,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:32,965 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 300 transitions. [2022-11-21 16:56:32,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-21 16:56:32,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:32,965 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] [2022-11-21 16:56:32,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:56:33,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-21 16:56:33,173 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)] === [2022-11-21 16:56:33,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:33,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1375119194, now seen corresponding path program 2 times [2022-11-21 16:56:33,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:33,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469209537] [2022-11-21 16:56:33,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:33,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:33,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:33,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:33,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469209537] [2022-11-21 16:56:33,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469209537] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:56:33,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044413601] [2022-11-21 16:56:33,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:56:33,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:56:33,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:56:33,520 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:56:33,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:56:33,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:56:33,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:56:33,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 16:56:33,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:56:33,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:33,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:56:34,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:34,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044413601] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:56:34,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:56:34,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-11-21 16:56:34,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646277711] [2022-11-21 16:56:34,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:56:34,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 16:56:34,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:34,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 16:56:34,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:56:34,023 INFO L87 Difference]: Start difference. First operand 120 states and 300 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 12 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) [2022-11-21 16:56:34,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:34,603 INFO L93 Difference]: Finished difference Result 344 states and 834 transitions. [2022-11-21 16:56:34,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 16:56:34,604 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 12 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 20 [2022-11-21 16:56:34,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:34,606 INFO L225 Difference]: With dead ends: 344 [2022-11-21 16:56:34,606 INFO L226 Difference]: Without dead ends: 264 [2022-11-21 16:56:34,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2022-11-21 16:56:34,607 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 201 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:56:34,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 16:56:34,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-11-21 16:56:34,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 184. [2022-11-21 16:56:34,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.612021857923497) internal successors, (478), 183 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:34,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 478 transitions. [2022-11-21 16:56:34,615 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 478 transitions. Word has length 20 [2022-11-21 16:56:34,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:34,616 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 478 transitions. [2022-11-21 16:56:34,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 12 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) [2022-11-21 16:56:34,616 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 478 transitions. [2022-11-21 16:56:34,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-21 16:56:34,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:34,617 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] [2022-11-21 16:56:34,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:56:34,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:56:34,823 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)] === [2022-11-21 16:56:34,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:34,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1063991060, now seen corresponding path program 1 times [2022-11-21 16:56:34,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:34,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326986664] [2022-11-21 16:56:34,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:34,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:35,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:35,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:35,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326986664] [2022-11-21 16:56:35,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326986664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:35,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:35,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:56:35,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110226633] [2022-11-21 16:56:35,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:35,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:56:35,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:35,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:56:35,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:56:35,153 INFO L87 Difference]: Start difference. First operand 184 states and 478 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) 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) [2022-11-21 16:56:35,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:35,328 INFO L93 Difference]: Finished difference Result 236 states and 592 transitions. [2022-11-21 16:56:35,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:56:35,328 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) 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 [2022-11-21 16:56:35,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:35,330 INFO L225 Difference]: With dead ends: 236 [2022-11-21 16:56:35,330 INFO L226 Difference]: Without dead ends: 184 [2022-11-21 16:56:35,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:56:35,330 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 29 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:56:35,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 15 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:56:35,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-21 16:56:35,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2022-11-21 16:56:35,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.568306010928962) internal successors, (470), 183 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:35,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 470 transitions. [2022-11-21 16:56:35,338 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 470 transitions. Word has length 20 [2022-11-21 16:56:35,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:35,338 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 470 transitions. [2022-11-21 16:56:35,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) 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) [2022-11-21 16:56:35,339 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 470 transitions. [2022-11-21 16:56:35,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-21 16:56:35,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:35,340 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:35,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 16:56:35,341 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)] === [2022-11-21 16:56:35,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:35,341 INFO L85 PathProgramCache]: Analyzing trace with hash 835177655, now seen corresponding path program 2 times [2022-11-21 16:56:35,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:35,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141381036] [2022-11-21 16:56:35,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:35,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:35,678 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:35,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:35,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141381036] [2022-11-21 16:56:35,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141381036] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:56:35,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644656639] [2022-11-21 16:56:35,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:56:35,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:56:35,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:56:35,681 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:56:35,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:56:35,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:56:35,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:56:35,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 16:56:35,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:56:35,994 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:35,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:56:36,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:36,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644656639] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:56:36,361 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:56:36,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-11-21 16:56:36,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567535798] [2022-11-21 16:56:36,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:56:36,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-21 16:56:36,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:36,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-21 16:56:36,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-21 16:56:36,363 INFO L87 Difference]: Start difference. First operand 184 states and 470 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 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) [2022-11-21 16:56:37,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:37,887 INFO L93 Difference]: Finished difference Result 472 states and 1181 transitions. [2022-11-21 16:56:37,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-21 16:56:37,888 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 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 22 [2022-11-21 16:56:37,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:37,890 INFO L225 Difference]: With dead ends: 472 [2022-11-21 16:56:37,890 INFO L226 Difference]: Without dead ends: 358 [2022-11-21 16:56:37,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=504, Invalid=1658, Unknown=0, NotChecked=0, Total=2162 [2022-11-21 16:56:37,894 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 236 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:56:37,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 1 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 16:56:37,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-11-21 16:56:37,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 252. [2022-11-21 16:56:37,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 2.649402390438247) internal successors, (665), 251 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:37,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 665 transitions. [2022-11-21 16:56:37,905 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 665 transitions. Word has length 22 [2022-11-21 16:56:37,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:37,906 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 665 transitions. [2022-11-21 16:56:37,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 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) [2022-11-21 16:56:37,906 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 665 transitions. [2022-11-21 16:56:37,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 16:56:37,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:37,908 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:37,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 16:56:38,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:56:38,114 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)] === [2022-11-21 16:56:38,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:38,114 INFO L85 PathProgramCache]: Analyzing trace with hash 233845404, now seen corresponding path program 3 times [2022-11-21 16:56:38,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:38,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599403509] [2022-11-21 16:56:38,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:38,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:38,787 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:38,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:38,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599403509] [2022-11-21 16:56:38,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599403509] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:56:38,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094927106] [2022-11-21 16:56:38,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 16:56:38,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:56:38,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:56:38,790 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:56:38,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 16:56:38,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-21 16:56:38,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:56:38,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-21 16:56:38,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:56:39,231 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:39,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:56:39,765 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:39,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094927106] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:56:39,765 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:56:39,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-11-21 16:56:39,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722389206] [2022-11-21 16:56:39,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:56:39,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 16:56:39,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:39,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 16:56:39,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:56:39,768 INFO L87 Difference]: Start difference. First operand 252 states and 665 transitions. Second operand has 18 states, 18 states have (on average 3.388888888888889) 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) [2022-11-21 16:56:42,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:42,694 INFO L93 Difference]: Finished difference Result 732 states and 1828 transitions. [2022-11-21 16:56:42,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-11-21 16:56:42,694 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.388888888888889) 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 24 [2022-11-21 16:56:42,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:42,698 INFO L225 Difference]: With dead ends: 732 [2022-11-21 16:56:42,698 INFO L226 Difference]: Without dead ends: 576 [2022-11-21 16:56:42,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2045 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1151, Invalid=5011, Unknown=0, NotChecked=0, Total=6162 [2022-11-21 16:56:42,704 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 436 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:56:42,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 0 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-21 16:56:42,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2022-11-21 16:56:42,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 380. [2022-11-21 16:56:42,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 2.6939313984168867) internal successors, (1021), 379 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:42,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1021 transitions. [2022-11-21 16:56:42,753 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1021 transitions. Word has length 24 [2022-11-21 16:56:42,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:42,754 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 1021 transitions. [2022-11-21 16:56:42,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.388888888888889) 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) [2022-11-21 16:56:42,754 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1021 transitions. [2022-11-21 16:56:42,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 16:56:42,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:42,758 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:42,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 16:56:42,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:56:42,959 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)] === [2022-11-21 16:56:42,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:42,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1188493266, now seen corresponding path program 1 times [2022-11-21 16:56:42,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:42,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885464415] [2022-11-21 16:56:42,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:42,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:43,441 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:43,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:43,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885464415] [2022-11-21 16:56:43,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885464415] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:56:43,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235143449] [2022-11-21 16:56:43,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:43,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:56:43,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:56:43,443 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:56:43,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 16:56:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:43,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-21 16:56:43,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:56:43,847 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:43,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:56:44,553 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:44,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235143449] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:56:44,554 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:56:44,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2022-11-21 16:56:44,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240433602] [2022-11-21 16:56:44,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:56:44,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:56:44,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:44,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:56:44,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:56:44,557 INFO L87 Difference]: Start difference. First operand 380 states and 1021 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 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) [2022-11-21 16:56:46,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:46,369 INFO L93 Difference]: Finished difference Result 732 states and 1897 transitions. [2022-11-21 16:56:46,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-21 16:56:46,370 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 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 24 [2022-11-21 16:56:46,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:46,373 INFO L225 Difference]: With dead ends: 732 [2022-11-21 16:56:46,373 INFO L226 Difference]: Without dead ends: 606 [2022-11-21 16:56:46,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=491, Invalid=1861, Unknown=0, NotChecked=0, Total=2352 [2022-11-21 16:56:46,375 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 462 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:56:46,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 0 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 16:56:46,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2022-11-21 16:56:46,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 476. [2022-11-21 16:56:46,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 475 states have (on average 2.705263157894737) internal successors, (1285), 475 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:46,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 1285 transitions. [2022-11-21 16:56:46,391 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 1285 transitions. Word has length 24 [2022-11-21 16:56:46,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:46,392 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 1285 transitions. [2022-11-21 16:56:46,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 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) [2022-11-21 16:56:46,392 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 1285 transitions. [2022-11-21 16:56:46,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 16:56:46,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:46,395 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:46,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 16:56:46,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-21 16:56:46,602 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)] === [2022-11-21 16:56:46,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:46,602 INFO L85 PathProgramCache]: Analyzing trace with hash -677155606, now seen corresponding path program 2 times [2022-11-21 16:56:46,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:46,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319696790] [2022-11-21 16:56:46,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:46,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:47,129 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:47,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:47,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319696790] [2022-11-21 16:56:47,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319696790] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:56:47,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447153216] [2022-11-21 16:56:47,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:56:47,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:56:47,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:56:47,134 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:56:47,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 16:56:47,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:56:47,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:56:47,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-21 16:56:47,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:56:47,492 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:47,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:56:48,100 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:48,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447153216] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:56:48,100 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:56:48,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2022-11-21 16:56:48,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846058183] [2022-11-21 16:56:48,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:56:48,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:56:48,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:48,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:56:48,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:56:48,103 INFO L87 Difference]: Start difference. First operand 476 states and 1285 transitions. Second operand has 19 states, 19 states have (on average 3.3684210526315788) 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) [2022-11-21 16:56:50,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:50,713 INFO L93 Difference]: Finished difference Result 808 states and 2107 transitions. [2022-11-21 16:56:50,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-21 16:56:50,714 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3684210526315788) 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 24 [2022-11-21 16:56:50,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:50,718 INFO L225 Difference]: With dead ends: 808 [2022-11-21 16:56:50,718 INFO L226 Difference]: Without dead ends: 684 [2022-11-21 16:56:50,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1148 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=876, Invalid=3156, Unknown=0, NotChecked=0, Total=4032 [2022-11-21 16:56:50,720 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 334 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:56:50,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 0 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-21 16:56:50,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2022-11-21 16:56:50,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 496. [2022-11-21 16:56:50,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 495 states have (on average 2.690909090909091) internal successors, (1332), 495 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:50,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 1332 transitions. [2022-11-21 16:56:50,743 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 1332 transitions. Word has length 24 [2022-11-21 16:56:50,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:50,743 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 1332 transitions. [2022-11-21 16:56:50,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3684210526315788) 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) [2022-11-21 16:56:50,744 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 1332 transitions. [2022-11-21 16:56:50,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-21 16:56:50,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:50,747 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:50,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 16:56:50,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-21 16:56:50,954 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)] === [2022-11-21 16:56:50,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:50,955 INFO L85 PathProgramCache]: Analyzing trace with hash -87502747, now seen corresponding path program 3 times [2022-11-21 16:56:50,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:50,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782914211] [2022-11-21 16:56:50,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:50,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:51,461 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:51,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:51,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782914211] [2022-11-21 16:56:51,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782914211] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:56:51,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600930677] [2022-11-21 16:56:51,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 16:56:51,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:56:51,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:56:51,464 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:56:51,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 16:56:51,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-21 16:56:51,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:56:51,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 16:56:51,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:56:51,978 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:51,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:56:53,055 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:53,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600930677] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:56:53,056 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:56:53,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-11-21 16:56:53,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446874044] [2022-11-21 16:56:53,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:56:53,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:56:53,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:53,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:56:53,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:56:53,058 INFO L87 Difference]: Start difference. First operand 496 states and 1332 transitions. Second operand has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 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) [2022-11-21 16:56:56,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:56,385 INFO L93 Difference]: Finished difference Result 1188 states and 3072 transitions. [2022-11-21 16:56:56,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-21 16:56:56,385 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 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 26 [2022-11-21 16:56:56,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:56,391 INFO L225 Difference]: With dead ends: 1188 [2022-11-21 16:56:56,391 INFO L226 Difference]: Without dead ends: 968 [2022-11-21 16:56:56,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1504 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=945, Invalid=3747, Unknown=0, NotChecked=0, Total=4692 [2022-11-21 16:56:56,393 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 536 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:56:56,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 0 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-21 16:56:56,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-11-21 16:56:56,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 656. [2022-11-21 16:56:56,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 655 states have (on average 2.7297709923664124) internal successors, (1788), 655 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:56,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 1788 transitions. [2022-11-21 16:56:56,432 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 1788 transitions. Word has length 26 [2022-11-21 16:56:56,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:56,434 INFO L495 AbstractCegarLoop]: Abstraction has 656 states and 1788 transitions. [2022-11-21 16:56:56,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 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) [2022-11-21 16:56:56,435 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1788 transitions. [2022-11-21 16:56:56,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-21 16:56:56,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:56,436 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:56,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 16:56:56,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-21 16:56:56,642 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)] === [2022-11-21 16:56:56,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:56,643 INFO L85 PathProgramCache]: Analyzing trace with hash -913096754, now seen corresponding path program 4 times [2022-11-21 16:56:56,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:56,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903805164] [2022-11-21 16:56:56,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:56,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:57,483 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:57,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:57,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903805164] [2022-11-21 16:56:57,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903805164] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:56:57,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169857590] [2022-11-21 16:56:57,484 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 16:56:57,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:56:57,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:56:57,485 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:56:57,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 16:56:57,602 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 16:56:57,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:56:57,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-21 16:56:57,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:56:58,177 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:58,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:56:59,282 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:59,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169857590] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:56:59,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:56:59,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-11-21 16:56:59,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949423545] [2022-11-21 16:56:59,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:56:59,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-21 16:56:59,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:59,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-21 16:56:59,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2022-11-21 16:56:59,285 INFO L87 Difference]: Start difference. First operand 656 states and 1788 transitions. Second operand has 25 states, 25 states have (on average 2.72) internal successors, (68), 24 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) [2022-11-21 16:57:03,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:57:03,799 INFO L93 Difference]: Finished difference Result 1606 states and 4220 transitions. [2022-11-21 16:57:03,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-11-21 16:57:03,800 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.72) internal successors, (68), 24 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 28 [2022-11-21 16:57:03,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:57:03,807 INFO L225 Difference]: With dead ends: 1606 [2022-11-21 16:57:03,807 INFO L226 Difference]: Without dead ends: 1318 [2022-11-21 16:57:03,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2504 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1537, Invalid=5945, Unknown=0, NotChecked=0, Total=7482 [2022-11-21 16:57:03,810 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 886 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:57:03,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 0 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1196 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-21 16:57:03,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2022-11-21 16:57:03,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 828. [2022-11-21 16:57:03,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 827 states have (on average 2.7448609431680775) internal successors, (2270), 827 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:03,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 2270 transitions. [2022-11-21 16:57:03,842 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 2270 transitions. Word has length 28 [2022-11-21 16:57:03,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:57:03,843 INFO L495 AbstractCegarLoop]: Abstraction has 828 states and 2270 transitions. [2022-11-21 16:57:03,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.72) internal successors, (68), 24 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) [2022-11-21 16:57:03,843 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 2270 transitions. [2022-11-21 16:57:03,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-21 16:57:03,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:57:03,846 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:03,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-21 16:57:04,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:57:04,052 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)] === [2022-11-21 16:57:04,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:04,052 INFO L85 PathProgramCache]: Analyzing trace with hash 156480004, now seen corresponding path program 5 times [2022-11-21 16:57:04,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:04,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928439311] [2022-11-21 16:57:04,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:04,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:04,873 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:04,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:04,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928439311] [2022-11-21 16:57:04,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928439311] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:57:04,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956867680] [2022-11-21 16:57:04,874 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 16:57:04,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:57:04,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:57:04,875 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:57:04,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 16:57:05,006 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-21 16:57:05,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:57:05,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-21 16:57:05,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:57:05,469 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:05,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:57:06,543 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:06,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956867680] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:57:06,543 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:57:06,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-11-21 16:57:06,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349480247] [2022-11-21 16:57:06,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:57:06,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-21 16:57:06,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:06,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 16:57:06,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2022-11-21 16:57:06,545 INFO L87 Difference]: Start difference. First operand 828 states and 2270 transitions. Second operand has 24 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 23 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) [2022-11-21 16:57:11,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:57:11,157 INFO L93 Difference]: Finished difference Result 1826 states and 4843 transitions. [2022-11-21 16:57:11,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-11-21 16:57:11,158 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 23 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 28 [2022-11-21 16:57:11,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:57:11,165 INFO L225 Difference]: With dead ends: 1826 [2022-11-21 16:57:11,165 INFO L226 Difference]: Without dead ends: 1600 [2022-11-21 16:57:11,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2556 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1374, Invalid=6108, Unknown=0, NotChecked=0, Total=7482 [2022-11-21 16:57:11,168 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 784 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1618 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:57:11,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 0 Invalid, 1691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1618 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-21 16:57:11,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2022-11-21 16:57:11,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1156. [2022-11-21 16:57:11,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1155 states have (on average 2.780952380952381) internal successors, (3212), 1155 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:11,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 3212 transitions. [2022-11-21 16:57:11,205 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 3212 transitions. Word has length 28 [2022-11-21 16:57:11,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:57:11,205 INFO L495 AbstractCegarLoop]: Abstraction has 1156 states and 3212 transitions. [2022-11-21 16:57:11,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 23 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) [2022-11-21 16:57:11,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 3212 transitions. [2022-11-21 16:57:11,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-21 16:57:11,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:57:11,208 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:11,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-21 16:57:11,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-11-21 16:57:11,415 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)] === [2022-11-21 16:57:11,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:11,416 INFO L85 PathProgramCache]: Analyzing trace with hash 654012170, now seen corresponding path program 6 times [2022-11-21 16:57:11,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:11,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455192289] [2022-11-21 16:57:11,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:11,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:12,139 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:12,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:12,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455192289] [2022-11-21 16:57:12,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455192289] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:57:12,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233309524] [2022-11-21 16:57:12,139 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 16:57:12,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:57:12,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:57:12,141 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:57:12,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 16:57:12,279 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-21 16:57:12,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:57:12,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-21 16:57:12,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:57:12,779 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:12,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:57:13,929 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:13,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233309524] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:57:13,929 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:57:13,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-11-21 16:57:13,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220662847] [2022-11-21 16:57:13,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:57:13,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-21 16:57:13,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:13,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-21 16:57:13,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2022-11-21 16:57:13,932 INFO L87 Difference]: Start difference. First operand 1156 states and 3212 transitions. Second operand has 25 states, 25 states have (on average 2.72) internal successors, (68), 24 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) [2022-11-21 16:57:17,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:57:17,983 INFO L93 Difference]: Finished difference Result 1980 states and 5302 transitions. [2022-11-21 16:57:17,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-21 16:57:17,984 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.72) internal successors, (68), 24 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 28 [2022-11-21 16:57:17,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:57:17,992 INFO L225 Difference]: With dead ends: 1980 [2022-11-21 16:57:17,992 INFO L226 Difference]: Without dead ends: 1716 [2022-11-21 16:57:17,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2057 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1265, Invalid=5055, Unknown=0, NotChecked=0, Total=6320 [2022-11-21 16:57:17,995 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 601 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1563 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:57:17,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 0 Invalid, 1616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1563 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-21 16:57:17,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2022-11-21 16:57:18,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1380. [2022-11-21 16:57:18,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 2.781725888324873) internal successors, (3836), 1379 states have internal predecessors, (3836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:18,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 3836 transitions. [2022-11-21 16:57:18,042 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 3836 transitions. Word has length 28 [2022-11-21 16:57:18,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:57:18,043 INFO L495 AbstractCegarLoop]: Abstraction has 1380 states and 3836 transitions. [2022-11-21 16:57:18,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.72) internal successors, (68), 24 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) [2022-11-21 16:57:18,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 3836 transitions. [2022-11-21 16:57:18,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-21 16:57:18,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:57:18,047 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:18,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-21 16:57:18,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:57:18,254 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)] === [2022-11-21 16:57:18,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:18,254 INFO L85 PathProgramCache]: Analyzing trace with hash 527533460, now seen corresponding path program 7 times [2022-11-21 16:57:18,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:18,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074254482] [2022-11-21 16:57:18,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:18,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:19,006 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:19,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:19,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074254482] [2022-11-21 16:57:19,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074254482] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:57:19,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787770070] [2022-11-21 16:57:19,007 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-21 16:57:19,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:57:19,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:57:19,009 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:57:19,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-21 16:57:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:19,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-21 16:57:19,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:57:19,592 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:19,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:57:20,964 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:20,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787770070] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:57:20,964 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:57:20,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-11-21 16:57:20,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188319508] [2022-11-21 16:57:20,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:57:20,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-21 16:57:20,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:20,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-21 16:57:20,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2022-11-21 16:57:20,965 INFO L87 Difference]: Start difference. First operand 1380 states and 3836 transitions. Second operand has 25 states, 25 states have (on average 2.72) internal successors, (68), 24 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) [2022-11-21 16:57:24,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:57:24,818 INFO L93 Difference]: Finished difference Result 2152 states and 5793 transitions. [2022-11-21 16:57:24,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-21 16:57:24,819 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.72) internal successors, (68), 24 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 28 [2022-11-21 16:57:24,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:57:24,827 INFO L225 Difference]: With dead ends: 2152 [2022-11-21 16:57:24,827 INFO L226 Difference]: Without dead ends: 2002 [2022-11-21 16:57:24,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1617 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=996, Invalid=3974, Unknown=0, NotChecked=0, Total=4970 [2022-11-21 16:57:24,831 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 556 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:57:24,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 0 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-21 16:57:24,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2022-11-21 16:57:24,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1604. [2022-11-21 16:57:24,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1604 states, 1603 states have (on average 2.7972551466001248) internal successors, (4484), 1603 states have internal predecessors, (4484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:24,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 4484 transitions. [2022-11-21 16:57:24,899 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 4484 transitions. Word has length 28 [2022-11-21 16:57:24,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:57:24,900 INFO L495 AbstractCegarLoop]: Abstraction has 1604 states and 4484 transitions. [2022-11-21 16:57:24,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.72) internal successors, (68), 24 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) [2022-11-21 16:57:24,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 4484 transitions. [2022-11-21 16:57:24,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-21 16:57:24,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:57:24,905 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:24,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-21 16:57:25,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:57:25,112 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)] === [2022-11-21 16:57:25,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:25,112 INFO L85 PathProgramCache]: Analyzing trace with hash 129754264, now seen corresponding path program 8 times [2022-11-21 16:57:25,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:25,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514580813] [2022-11-21 16:57:25,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:25,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:25,805 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:25,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:25,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514580813] [2022-11-21 16:57:25,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514580813] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:57:25,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593473266] [2022-11-21 16:57:25,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:57:25,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:57:25,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:57:25,811 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:57:25,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-21 16:57:25,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:57:25,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:57:25,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-21 16:57:25,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:57:26,380 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:26,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:57:27,843 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:27,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593473266] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:57:27,843 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:57:27,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-11-21 16:57:27,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86085840] [2022-11-21 16:57:27,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:57:27,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-21 16:57:27,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:27,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 16:57:27,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2022-11-21 16:57:27,845 INFO L87 Difference]: Start difference. First operand 1604 states and 4484 transitions. Second operand has 24 states, 24 states have (on average 2.875) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:36,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:57:36,121 INFO L93 Difference]: Finished difference Result 2706 states and 7289 transitions. [2022-11-21 16:57:36,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-11-21 16:57:36,122 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.875) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-21 16:57:36,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:57:36,128 INFO L225 Difference]: With dead ends: 2706 [2022-11-21 16:57:36,128 INFO L226 Difference]: Without dead ends: 2412 [2022-11-21 16:57:36,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5695 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=2609, Invalid=12397, Unknown=0, NotChecked=0, Total=15006 [2022-11-21 16:57:36,131 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 536 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2096 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-21 16:57:36,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 0 Invalid, 2155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2096 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-21 16:57:36,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2022-11-21 16:57:36,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 1804. [2022-11-21 16:57:36,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1804 states, 1803 states have (on average 2.796450360510261) internal successors, (5042), 1803 states have internal predecessors, (5042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:36,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1804 states to 1804 states and 5042 transitions. [2022-11-21 16:57:36,187 INFO L78 Accepts]: Start accepts. Automaton has 1804 states and 5042 transitions. Word has length 28 [2022-11-21 16:57:36,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:57:36,188 INFO L495 AbstractCegarLoop]: Abstraction has 1804 states and 5042 transitions. [2022-11-21 16:57:36,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.875) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:36,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1804 states and 5042 transitions. [2022-11-21 16:57:36,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-21 16:57:36,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:57:36,193 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:36,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-21 16:57:36,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-21 16:57:36,399 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)] === [2022-11-21 16:57:36,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:36,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1839086095, now seen corresponding path program 9 times [2022-11-21 16:57:36,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:36,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485345376] [2022-11-21 16:57:36,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:36,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:37,253 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:37,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:37,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485345376] [2022-11-21 16:57:37,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485345376] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:57:37,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144936868] [2022-11-21 16:57:37,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 16:57:37,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:57:37,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:57:37,255 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:57:37,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-21 16:57:37,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-21 16:57:37,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:57:37,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-21 16:57:37,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:57:38,157 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:38,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:57:40,067 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:40,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144936868] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:57:40,068 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:57:40,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2022-11-21 16:57:40,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940702652] [2022-11-21 16:57:40,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:57:40,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-21 16:57:40,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:40,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-21 16:57:40,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=560, Unknown=0, NotChecked=0, Total=702 [2022-11-21 16:57:40,070 INFO L87 Difference]: Start difference. First operand 1804 states and 5042 transitions. Second operand has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 26 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) [2022-11-21 16:57:47,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:57:47,783 INFO L93 Difference]: Finished difference Result 2718 states and 7389 transitions. [2022-11-21 16:57:47,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-11-21 16:57:47,784 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 26 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 30 [2022-11-21 16:57:47,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:57:47,795 INFO L225 Difference]: With dead ends: 2718 [2022-11-21 16:57:47,795 INFO L226 Difference]: Without dead ends: 2472 [2022-11-21 16:57:47,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2467 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1540, Invalid=5770, Unknown=0, NotChecked=0, Total=7310 [2022-11-21 16:57:47,797 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 665 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1777 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-21 16:57:47,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 0 Invalid, 1852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1777 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-21 16:57:47,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-21 16:57:47,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 2156. [2022-11-21 16:57:47,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2155 states have (on average 2.7851508120649653) internal successors, (6002), 2155 states have internal predecessors, (6002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:47,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 6002 transitions. [2022-11-21 16:57:47,857 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 6002 transitions. Word has length 30 [2022-11-21 16:57:47,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:57:47,857 INFO L495 AbstractCegarLoop]: Abstraction has 2156 states and 6002 transitions. [2022-11-21 16:57:47,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 26 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) [2022-11-21 16:57:47,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 6002 transitions. [2022-11-21 16:57:47,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-21 16:57:47,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:57:47,863 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:47,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-21 16:57:48,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-21 16:57:48,070 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)] === [2022-11-21 16:57:48,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:48,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1430081433, now seen corresponding path program 10 times [2022-11-21 16:57:48,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:48,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465092812] [2022-11-21 16:57:48,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:48,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:49,005 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:49,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:49,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465092812] [2022-11-21 16:57:49,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465092812] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:57:49,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669560680] [2022-11-21 16:57:49,006 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 16:57:49,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:57:49,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:57:49,008 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:57:49,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-21 16:57:49,179 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 16:57:49,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:57:49,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-21 16:57:49,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:57:49,789 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:49,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:57:51,691 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:51,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669560680] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:57:51,691 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:57:51,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-11-21 16:57:51,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842160224] [2022-11-21 16:57:51,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:57:51,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 16:57:51,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:51,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 16:57:51,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2022-11-21 16:57:51,693 INFO L87 Difference]: Start difference. First operand 2156 states and 6002 transitions. Second operand has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 25 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:00,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:58:00,719 INFO L93 Difference]: Finished difference Result 3460 states and 9350 transitions. [2022-11-21 16:58:00,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-11-21 16:58:00,719 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 25 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-21 16:58:00,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:58:00,729 INFO L225 Difference]: With dead ends: 3460 [2022-11-21 16:58:00,730 INFO L226 Difference]: Without dead ends: 3132 [2022-11-21 16:58:00,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4483 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=2236, Invalid=9974, Unknown=0, NotChecked=0, Total=12210 [2022-11-21 16:58:00,732 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 834 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2142 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-21 16:58:00,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 0 Invalid, 2228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 2142 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-21 16:58:00,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3132 states. [2022-11-21 16:58:00,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3132 to 2524. [2022-11-21 16:58:00,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 2523 states have (on average 2.792707094728498) internal successors, (7046), 2523 states have internal predecessors, (7046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:00,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 7046 transitions. [2022-11-21 16:58:00,804 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 7046 transitions. Word has length 30 [2022-11-21 16:58:00,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:58:00,804 INFO L495 AbstractCegarLoop]: Abstraction has 2524 states and 7046 transitions. [2022-11-21 16:58:00,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 25 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:00,805 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 7046 transitions. [2022-11-21 16:58:00,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-21 16:58:00,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:58:00,812 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:00,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-21 16:58:01,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-21 16:58:01,018 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)] === [2022-11-21 16:58:01,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:01,018 INFO L85 PathProgramCache]: Analyzing trace with hash -458131936, now seen corresponding path program 4 times [2022-11-21 16:58:01,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:01,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328139749] [2022-11-21 16:58:01,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:01,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:02,581 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:02,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:02,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328139749] [2022-11-21 16:58:02,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328139749] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:58:02,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563511278] [2022-11-21 16:58:02,582 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 16:58:02,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:58:02,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:58:02,584 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:58:02,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-21 16:58:02,744 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 16:58:02,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:58:02,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-21 16:58:02,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:58:03,689 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:03,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:58:05,020 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:05,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563511278] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:58:05,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:58:05,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 32 [2022-11-21 16:58:05,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395769824] [2022-11-21 16:58:05,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:58:05,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-21 16:58:05,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:05,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-21 16:58:05,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=824, Unknown=0, NotChecked=0, Total=1056 [2022-11-21 16:58:05,023 INFO L87 Difference]: Start difference. First operand 2524 states and 7046 transitions. Second operand has 33 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 32 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:11,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:58:11,855 INFO L93 Difference]: Finished difference Result 3628 states and 9725 transitions. [2022-11-21 16:58:11,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-11-21 16:58:11,855 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 32 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-21 16:58:11,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:58:11,863 INFO L225 Difference]: With dead ends: 3628 [2022-11-21 16:58:11,863 INFO L226 Difference]: Without dead ends: 3272 [2022-11-21 16:58:11,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4244 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2219, Invalid=9553, Unknown=0, NotChecked=0, Total=11772 [2022-11-21 16:58:11,866 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 919 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-21 16:58:11,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 10 Invalid, 2074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1996 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-21 16:58:11,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2022-11-21 16:58:11,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 2832. [2022-11-21 16:58:11,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2832 states, 2831 states have (on average 2.787707523843165) internal successors, (7892), 2831 states have internal predecessors, (7892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:11,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2832 states to 2832 states and 7892 transitions. [2022-11-21 16:58:11,959 INFO L78 Accepts]: Start accepts. Automaton has 2832 states and 7892 transitions. Word has length 32 [2022-11-21 16:58:11,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:58:11,960 INFO L495 AbstractCegarLoop]: Abstraction has 2832 states and 7892 transitions. [2022-11-21 16:58:11,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 32 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:11,960 INFO L276 IsEmpty]: Start isEmpty. Operand 2832 states and 7892 transitions. [2022-11-21 16:58:11,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-21 16:58:11,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:58:11,968 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:11,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-21 16:58:12,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-21 16:58:12,180 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)] === [2022-11-21 16:58:12,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:12,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1880470606, now seen corresponding path program 11 times [2022-11-21 16:58:12,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:12,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205641200] [2022-11-21 16:58:12,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:12,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:13,201 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:13,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:13,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205641200] [2022-11-21 16:58:13,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205641200] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:58:13,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122334560] [2022-11-21 16:58:13,202 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 16:58:13,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:58:13,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:58:13,203 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:58:13,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-21 16:58:13,358 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-11-21 16:58:13,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:58:13,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 16:58:13,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:58:14,286 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:14,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:58:16,073 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:16,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122334560] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:58:16,074 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:58:16,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2022-11-21 16:58:16,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698011983] [2022-11-21 16:58:16,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:58:16,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-21 16:58:16,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:16,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-21 16:58:16,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=725, Unknown=0, NotChecked=0, Total=930 [2022-11-21 16:58:16,075 INFO L87 Difference]: Start difference. First operand 2832 states and 7892 transitions. Second operand has 31 states, 31 states have (on average 2.5806451612903225) internal successors, (80), 30 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:22,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:58:22,546 INFO L93 Difference]: Finished difference Result 3856 states and 10463 transitions. [2022-11-21 16:58:22,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-11-21 16:58:22,547 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.5806451612903225) internal successors, (80), 30 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-21 16:58:22,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:58:22,556 INFO L225 Difference]: With dead ends: 3856 [2022-11-21 16:58:22,556 INFO L226 Difference]: Without dead ends: 3706 [2022-11-21 16:58:22,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2958 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=1651, Invalid=6905, Unknown=0, NotChecked=0, Total=8556 [2022-11-21 16:58:22,558 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 989 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-21 16:58:22,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 0 Invalid, 1796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-21 16:58:22,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3706 states. [2022-11-21 16:58:22,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3706 to 3024. [2022-11-21 16:58:22,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3024 states, 3023 states have (on average 2.793251736685412) internal successors, (8444), 3023 states have internal predecessors, (8444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:22,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3024 states to 3024 states and 8444 transitions. [2022-11-21 16:58:22,641 INFO L78 Accepts]: Start accepts. Automaton has 3024 states and 8444 transitions. Word has length 32 [2022-11-21 16:58:22,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:58:22,641 INFO L495 AbstractCegarLoop]: Abstraction has 3024 states and 8444 transitions. [2022-11-21 16:58:22,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.5806451612903225) internal successors, (80), 30 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:22,641 INFO L276 IsEmpty]: Start isEmpty. Operand 3024 states and 8444 transitions. [2022-11-21 16:58:22,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-21 16:58:22,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:58:22,650 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:22,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-21 16:58:22,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-21 16:58:22,863 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)] === [2022-11-21 16:58:22,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:22,863 INFO L85 PathProgramCache]: Analyzing trace with hash -459728476, now seen corresponding path program 12 times [2022-11-21 16:58:22,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:22,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899990780] [2022-11-21 16:58:22,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:22,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:23,960 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:23,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:23,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899990780] [2022-11-21 16:58:23,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899990780] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:58:23,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357234150] [2022-11-21 16:58:23,962 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 16:58:23,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:58:23,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:58:23,963 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:58:23,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-21 16:58:24,163 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-21 16:58:24,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:58:24,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 16:58:24,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:58:25,024 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:25,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:58:27,607 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:27,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357234150] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:58:27,608 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:58:27,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-11-21 16:58:27,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140781521] [2022-11-21 16:58:27,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:58:27,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-21 16:58:27,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:27,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-21 16:58:27,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=688, Unknown=0, NotChecked=0, Total=870 [2022-11-21 16:58:27,609 INFO L87 Difference]: Start difference. First operand 3024 states and 8444 transitions. Second operand has 30 states, 30 states have (on average 2.566666666666667) internal successors, (77), 29 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:38,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:58:38,908 INFO L93 Difference]: Finished difference Result 5030 states and 13702 transitions. [2022-11-21 16:58:38,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-11-21 16:58:38,908 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.566666666666667) internal successors, (77), 29 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-21 16:58:38,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:58:38,924 INFO L225 Difference]: With dead ends: 5030 [2022-11-21 16:58:38,924 INFO L226 Difference]: Without dead ends: 4626 [2022-11-21 16:58:38,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7107 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=3254, Invalid=15106, Unknown=0, NotChecked=0, Total=18360 [2022-11-21 16:58:38,927 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1284 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2088 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1284 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:58:38,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1284 Valid, 0 Invalid, 2215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2088 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-21 16:58:38,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4626 states. [2022-11-21 16:58:39,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4626 to 3344. [2022-11-21 16:58:39,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3344 states, 3343 states have (on average 2.808256057433443) internal successors, (9388), 3343 states have internal predecessors, (9388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:39,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3344 states to 3344 states and 9388 transitions. [2022-11-21 16:58:39,042 INFO L78 Accepts]: Start accepts. Automaton has 3344 states and 9388 transitions. Word has length 32 [2022-11-21 16:58:39,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:58:39,043 INFO L495 AbstractCegarLoop]: Abstraction has 3344 states and 9388 transitions. [2022-11-21 16:58:39,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.566666666666667) internal successors, (77), 29 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:39,044 INFO L276 IsEmpty]: Start isEmpty. Operand 3344 states and 9388 transitions. [2022-11-21 16:58:39,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-21 16:58:39,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:58:39,053 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:39,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-21 16:58:39,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:58:39,260 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)] === [2022-11-21 16:58:39,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:39,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1228958138, now seen corresponding path program 13 times [2022-11-21 16:58:39,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:39,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899837568] [2022-11-21 16:58:39,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:39,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:40,460 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:40,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:40,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899837568] [2022-11-21 16:58:40,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899837568] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:58:40,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993153533] [2022-11-21 16:58:40,460 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-21 16:58:40,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:58:40,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:58:40,461 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:58:40,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-21 16:58:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:40,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 16:58:40,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:58:41,546 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:41,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:58:43,645 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:43,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993153533] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:58:43,646 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:58:43,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2022-11-21 16:58:43,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42071928] [2022-11-21 16:58:43,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:58:43,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-21 16:58:43,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:43,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-21 16:58:43,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=743, Unknown=0, NotChecked=0, Total=930 [2022-11-21 16:58:43,648 INFO L87 Difference]: Start difference. First operand 3344 states and 9388 transitions. Second operand has 31 states, 31 states have (on average 2.5806451612903225) internal successors, (80), 30 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:55,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:58:55,450 INFO L93 Difference]: Finished difference Result 4832 states and 13186 transitions. [2022-11-21 16:58:55,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-11-21 16:58:55,451 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.5806451612903225) internal successors, (80), 30 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-21 16:58:55,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:58:55,463 INFO L225 Difference]: With dead ends: 4832 [2022-11-21 16:58:55,463 INFO L226 Difference]: Without dead ends: 4552 [2022-11-21 16:58:55,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5390 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=2385, Invalid=12135, Unknown=0, NotChecked=0, Total=14520 [2022-11-21 16:58:55,465 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1107 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2453 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:58:55,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1107 Valid, 0 Invalid, 2551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2453 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-21 16:58:55,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4552 states. [2022-11-21 16:58:55,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4552 to 3856. [2022-11-21 16:58:55,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3856 states, 3855 states have (on average 2.810894941634241) internal successors, (10836), 3855 states have internal predecessors, (10836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:55,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3856 states to 3856 states and 10836 transitions. [2022-11-21 16:58:55,588 INFO L78 Accepts]: Start accepts. Automaton has 3856 states and 10836 transitions. Word has length 32 [2022-11-21 16:58:55,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:58:55,588 INFO L495 AbstractCegarLoop]: Abstraction has 3856 states and 10836 transitions. [2022-11-21 16:58:55,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.5806451612903225) internal successors, (80), 30 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:55,589 INFO L276 IsEmpty]: Start isEmpty. Operand 3856 states and 10836 transitions. [2022-11-21 16:58:55,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-21 16:58:55,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:58:55,597 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:55,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-21 16:58:55,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-21 16:58:55,804 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)] === [2022-11-21 16:58:55,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:55,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1383989418, now seen corresponding path program 14 times [2022-11-21 16:58:55,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:55,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255368855] [2022-11-21 16:58:55,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:55,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:56,702 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:56,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:56,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255368855] [2022-11-21 16:58:56,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255368855] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:58:56,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56876578] [2022-11-21 16:58:56,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:58:56,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:58:56,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:58:56,707 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:58:56,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-21 16:58:56,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:58:56,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:58:56,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 16:58:56,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:58:57,606 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:57,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:58:59,341 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:59,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56876578] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:58:59,342 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:58:59,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2022-11-21 16:58:59,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232568483] [2022-11-21 16:58:59,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:58:59,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-21 16:58:59,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:59,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-21 16:58:59,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=728, Unknown=0, NotChecked=0, Total=930 [2022-11-21 16:58:59,343 INFO L87 Difference]: Start difference. First operand 3856 states and 10836 transitions. Second operand has 31 states, 31 states have (on average 2.5806451612903225) internal successors, (80), 30 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:06,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:59:06,594 INFO L93 Difference]: Finished difference Result 5066 states and 14021 transitions. [2022-11-21 16:59:06,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-11-21 16:59:06,594 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.5806451612903225) internal successors, (80), 30 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-21 16:59:06,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:59:06,627 INFO L225 Difference]: With dead ends: 5066 [2022-11-21 16:59:06,627 INFO L226 Difference]: Without dead ends: 4768 [2022-11-21 16:59:06,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3666 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=2230, Invalid=8482, Unknown=0, NotChecked=0, Total=10712 [2022-11-21 16:59:06,629 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 870 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1958 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:59:06,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 0 Invalid, 2043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1958 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-21 16:59:06,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4768 states. [2022-11-21 16:59:06,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4768 to 4248. [2022-11-21 16:59:06,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4248 states, 4247 states have (on average 2.7996232634801035) internal successors, (11890), 4247 states have internal predecessors, (11890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:06,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4248 states to 4248 states and 11890 transitions. [2022-11-21 16:59:06,727 INFO L78 Accepts]: Start accepts. Automaton has 4248 states and 11890 transitions. Word has length 32 [2022-11-21 16:59:06,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:59:06,728 INFO L495 AbstractCegarLoop]: Abstraction has 4248 states and 11890 transitions. [2022-11-21 16:59:06,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.5806451612903225) internal successors, (80), 30 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:06,728 INFO L276 IsEmpty]: Start isEmpty. Operand 4248 states and 11890 transitions. [2022-11-21 16:59:06,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-21 16:59:06,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:59:06,737 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:59:06,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-21 16:59:06,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:59:06,949 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)] === [2022-11-21 16:59:06,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:59:06,949 INFO L85 PathProgramCache]: Analyzing trace with hash -2014152240, now seen corresponding path program 15 times [2022-11-21 16:59:06,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:59:06,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710721095] [2022-11-21 16:59:06,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:59:06,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:59:06,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:59:07,815 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:59:07,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:59:07,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710721095] [2022-11-21 16:59:07,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710721095] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:59:07,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89154582] [2022-11-21 16:59:07,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 16:59:07,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:59:07,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:59:07,817 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:59:07,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-21 16:59:07,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-21 16:59:07,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:59:07,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 16:59:07,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:59:08,986 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:59:08,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:59:11,192 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:59:11,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89154582] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:59:11,193 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:59:11,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-11-21 16:59:11,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390429600] [2022-11-21 16:59:11,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:59:11,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-21 16:59:11,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:59:11,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-21 16:59:11,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=686, Unknown=0, NotChecked=0, Total=870 [2022-11-21 16:59:11,195 INFO L87 Difference]: Start difference. First operand 4248 states and 11890 transitions. Second operand has 30 states, 30 states have (on average 2.566666666666667) internal successors, (77), 29 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:22,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:59:22,461 INFO L93 Difference]: Finished difference Result 5710 states and 15625 transitions. [2022-11-21 16:59:22,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-11-21 16:59:22,462 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.566666666666667) internal successors, (77), 29 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-21 16:59:22,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:59:22,469 INFO L225 Difference]: With dead ends: 5710 [2022-11-21 16:59:22,469 INFO L226 Difference]: Without dead ends: 5420 [2022-11-21 16:59:22,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5648 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=2704, Invalid=12548, Unknown=0, NotChecked=0, Total=15252 [2022-11-21 16:59:22,471 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1043 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2514 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 2514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:59:22,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1043 Valid, 0 Invalid, 2624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 2514 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-21 16:59:22,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5420 states. [2022-11-21 16:59:22,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5420 to 4728. [2022-11-21 16:59:22,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4728 states, 4727 states have (on average 2.8064311402580917) internal successors, (13266), 4727 states have internal predecessors, (13266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:22,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4728 states to 4728 states and 13266 transitions. [2022-11-21 16:59:22,580 INFO L78 Accepts]: Start accepts. Automaton has 4728 states and 13266 transitions. Word has length 32 [2022-11-21 16:59:22,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:59:22,580 INFO L495 AbstractCegarLoop]: Abstraction has 4728 states and 13266 transitions. [2022-11-21 16:59:22,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.566666666666667) internal successors, (77), 29 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:22,581 INFO L276 IsEmpty]: Start isEmpty. Operand 4728 states and 13266 transitions. [2022-11-21 16:59:22,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-21 16:59:22,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:59:22,591 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:59:22,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-21 16:59:22,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:59:22,797 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)] === [2022-11-21 16:59:22,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:59:22,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1952006830, now seen corresponding path program 16 times [2022-11-21 16:59:22,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:59:22,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372100060] [2022-11-21 16:59:22,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:59:22,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:59:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:59:24,188 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:59:24,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:59:24,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372100060] [2022-11-21 16:59:24,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372100060] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:59:24,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978880205] [2022-11-21 16:59:24,189 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 16:59:24,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:59:24,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:59:24,190 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:59:24,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-21 16:59:24,335 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 16:59:24,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:59:24,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 16:59:24,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:59:25,383 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:59:25,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:59:28,083 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:59:28,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978880205] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:59:28,083 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:59:28,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 32 [2022-11-21 16:59:28,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858837142] [2022-11-21 16:59:28,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:59:28,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-21 16:59:28,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:59:28,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-21 16:59:28,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=861, Unknown=0, NotChecked=0, Total=1056 [2022-11-21 16:59:28,086 INFO L87 Difference]: Start difference. First operand 4728 states and 13266 transitions. Second operand has 33 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 32 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:45,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:59:45,661 INFO L93 Difference]: Finished difference Result 6602 states and 17951 transitions. [2022-11-21 16:59:45,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-11-21 16:59:45,662 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 32 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-21 16:59:45,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:59:45,670 INFO L225 Difference]: With dead ends: 6602 [2022-11-21 16:59:45,670 INFO L226 Difference]: Without dead ends: 5940 [2022-11-21 16:59:45,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8666 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=4333, Invalid=21427, Unknown=0, NotChecked=0, Total=25760 [2022-11-21 16:59:45,672 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1270 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2810 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:59:45,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1270 Valid, 0 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2810 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-21 16:59:45,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5940 states. [2022-11-21 16:59:45,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5940 to 5000. [2022-11-21 16:59:45,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5000 states, 4999 states have (on average 2.8049609921984398) internal successors, (14022), 4999 states have internal predecessors, (14022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:45,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5000 states to 5000 states and 14022 transitions. [2022-11-21 16:59:45,796 INFO L78 Accepts]: Start accepts. Automaton has 5000 states and 14022 transitions. Word has length 32 [2022-11-21 16:59:45,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:59:45,796 INFO L495 AbstractCegarLoop]: Abstraction has 5000 states and 14022 transitions. [2022-11-21 16:59:45,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 32 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:59:45,797 INFO L276 IsEmpty]: Start isEmpty. Operand 5000 states and 14022 transitions. [2022-11-21 16:59:45,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-21 16:59:45,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:59:45,806 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:59:45,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-21 16:59:46,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-11-21 16:59:46,013 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)] === [2022-11-21 16:59:46,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:59:46,014 INFO L85 PathProgramCache]: Analyzing trace with hash 2071629038, now seen corresponding path program 17 times [2022-11-21 16:59:46,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:59:46,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437752624] [2022-11-21 16:59:46,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:59:46,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:59:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:59:47,078 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:59:47,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:59:47,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437752624] [2022-11-21 16:59:47,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437752624] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:59:47,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780956150] [2022-11-21 16:59:47,079 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 16:59:47,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:59:47,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:59:47,083 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:59:47,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-21 16:59:47,264 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-11-21 16:59:47,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:59:47,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 16:59:47,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:59:48,296 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:59:48,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:59:50,902 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:59:50,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780956150] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:59:50,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:59:50,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-11-21 16:59:50,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182481540] [2022-11-21 16:59:50,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:59:50,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-21 16:59:50,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:59:50,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-21 16:59:50,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2022-11-21 16:59:50,904 INFO L87 Difference]: Start difference. First operand 5000 states and 14022 transitions. Second operand has 30 states, 30 states have (on average 2.566666666666667) internal successors, (77), 29 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:04,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:00:04,525 INFO L93 Difference]: Finished difference Result 6530 states and 17908 transitions. [2022-11-21 17:00:04,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-11-21 17:00:04,526 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.566666666666667) internal successors, (77), 29 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-21 17:00:04,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:00:04,535 INFO L225 Difference]: With dead ends: 6530 [2022-11-21 17:00:04,535 INFO L226 Difference]: Without dead ends: 6138 [2022-11-21 17:00:04,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5611 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=2670, Invalid=12582, Unknown=0, NotChecked=0, Total=15252 [2022-11-21 17:00:04,537 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1090 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1977 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:00:04,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 0 Invalid, 2063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1977 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-21 17:00:04,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6138 states. [2022-11-21 17:00:04,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6138 to 5432. [2022-11-21 17:00:04,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5432 states, 5431 states have (on average 2.8079543362180077) internal successors, (15250), 5431 states have internal predecessors, (15250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:04,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5432 states to 5432 states and 15250 transitions. [2022-11-21 17:00:04,706 INFO L78 Accepts]: Start accepts. Automaton has 5432 states and 15250 transitions. Word has length 32 [2022-11-21 17:00:04,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:00:04,706 INFO L495 AbstractCegarLoop]: Abstraction has 5432 states and 15250 transitions. [2022-11-21 17:00:04,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.566666666666667) internal successors, (77), 29 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:04,706 INFO L276 IsEmpty]: Start isEmpty. Operand 5432 states and 15250 transitions. [2022-11-21 17:00:04,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-21 17:00:04,718 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:00:04,718 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:00:04,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-21 17:00:04,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-21 17:00:04,925 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)] === [2022-11-21 17:00:04,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:04,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1032519944, now seen corresponding path program 18 times [2022-11-21 17:00:04,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:04,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414438222] [2022-11-21 17:00:04,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:04,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:05,856 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:05,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:00:05,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414438222] [2022-11-21 17:00:05,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414438222] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:00:05,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450280288] [2022-11-21 17:00:05,857 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 17:00:05,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:00:05,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:00:05,859 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:00:05,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-21 17:00:06,182 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-21 17:00:06,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:00:06,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 17:00:06,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:00:07,085 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:07,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:00:10,002 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:10,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450280288] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:00:10,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:00:10,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-11-21 17:00:10,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534557103] [2022-11-21 17:00:10,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:00:10,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-21 17:00:10,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:00:10,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-21 17:00:10,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2022-11-21 17:00:10,005 INFO L87 Difference]: Start difference. First operand 5432 states and 15250 transitions. Second operand has 30 states, 30 states have (on average 2.566666666666667) internal successors, (77), 29 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:23,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:00:23,089 INFO L93 Difference]: Finished difference Result 7038 states and 19407 transitions. [2022-11-21 17:00:23,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-11-21 17:00:23,089 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.566666666666667) internal successors, (77), 29 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-21 17:00:23,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:00:23,098 INFO L225 Difference]: With dead ends: 7038 [2022-11-21 17:00:23,098 INFO L226 Difference]: Without dead ends: 6696 [2022-11-21 17:00:23,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5468 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=2551, Invalid=12455, Unknown=0, NotChecked=0, Total=15006 [2022-11-21 17:00:23,100 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 808 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2788 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:00:23,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 0 Invalid, 2879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2788 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-21 17:00:23,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6696 states. [2022-11-21 17:00:23,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6696 to 5880. [2022-11-21 17:00:23,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5880 states, 5879 states have (on average 2.8089811192379655) internal successors, (16514), 5879 states have internal predecessors, (16514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:23,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5880 states to 5880 states and 16514 transitions. [2022-11-21 17:00:23,246 INFO L78 Accepts]: Start accepts. Automaton has 5880 states and 16514 transitions. Word has length 32 [2022-11-21 17:00:23,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:00:23,247 INFO L495 AbstractCegarLoop]: Abstraction has 5880 states and 16514 transitions. [2022-11-21 17:00:23,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.566666666666667) internal successors, (77), 29 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:23,247 INFO L276 IsEmpty]: Start isEmpty. Operand 5880 states and 16514 transitions. [2022-11-21 17:00:23,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-21 17:00:23,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:00:23,257 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:00:23,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-21 17:00:23,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:00:23,465 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)] === [2022-11-21 17:00:23,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:23,466 INFO L85 PathProgramCache]: Analyzing trace with hash 994695544, now seen corresponding path program 19 times [2022-11-21 17:00:23,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:23,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975555731] [2022-11-21 17:00:23,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:23,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:24,633 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:24,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:00:24,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975555731] [2022-11-21 17:00:24,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975555731] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:00:24,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805294894] [2022-11-21 17:00:24,633 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-21 17:00:24,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:00:24,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:00:24,635 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:00:24,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-21 17:00:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:24,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 17:00:24,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:00:25,422 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:25,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:00:28,026 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:28,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805294894] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:00:28,027 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:00:28,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-11-21 17:00:28,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007509232] [2022-11-21 17:00:28,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:00:28,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-21 17:00:28,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:00:28,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-21 17:00:28,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2022-11-21 17:00:28,029 INFO L87 Difference]: Start difference. First operand 5880 states and 16514 transitions. Second operand has 30 states, 30 states have (on average 2.566666666666667) internal successors, (77), 29 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:40,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:00:40,713 INFO L93 Difference]: Finished difference Result 7728 states and 21278 transitions. [2022-11-21 17:00:40,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-11-21 17:00:40,713 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.566666666666667) internal successors, (77), 29 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-21 17:00:40,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:00:40,723 INFO L225 Difference]: With dead ends: 7728 [2022-11-21 17:00:40,723 INFO L226 Difference]: Without dead ends: 7248 [2022-11-21 17:00:40,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6841 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=3091, Invalid=14999, Unknown=0, NotChecked=0, Total=18090 [2022-11-21 17:00:40,725 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1012 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:00:40,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1012 Valid, 0 Invalid, 2037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-21 17:00:40,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7248 states. [2022-11-21 17:00:40,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7248 to 6248. [2022-11-21 17:00:40,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6248 states, 6247 states have (on average 2.8157515607491597) internal successors, (17590), 6247 states have internal predecessors, (17590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:40,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6248 states to 6248 states and 17590 transitions. [2022-11-21 17:00:40,866 INFO L78 Accepts]: Start accepts. Automaton has 6248 states and 17590 transitions. Word has length 32 [2022-11-21 17:00:40,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:00:40,866 INFO L495 AbstractCegarLoop]: Abstraction has 6248 states and 17590 transitions. [2022-11-21 17:00:40,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.566666666666667) internal successors, (77), 29 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:40,867 INFO L276 IsEmpty]: Start isEmpty. Operand 6248 states and 17590 transitions. [2022-11-21 17:00:40,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-21 17:00:40,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:00:40,874 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:00:40,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-21 17:00:41,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:00:41,075 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)] === [2022-11-21 17:00:41,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:41,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1073431328, now seen corresponding path program 20 times [2022-11-21 17:00:41,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:41,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52059262] [2022-11-21 17:00:41,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:41,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:41,820 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:41,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:00:41,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52059262] [2022-11-21 17:00:41,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52059262] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:00:41,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879528192] [2022-11-21 17:00:41,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:00:41,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:00:41,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:00:41,823 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:00:41,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-21 17:00:41,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:00:41,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:00:41,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 17:00:41,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:00:42,709 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:42,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:00:45,249 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:45,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879528192] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:00:45,249 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:00:45,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-11-21 17:00:45,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084358502] [2022-11-21 17:00:45,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:00:45,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-21 17:00:45,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:00:45,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-21 17:00:45,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=680, Unknown=0, NotChecked=0, Total=870 [2022-11-21 17:00:45,250 INFO L87 Difference]: Start difference. First operand 6248 states and 17590 transitions. Second operand has 30 states, 30 states have (on average 2.7) internal successors, (81), 29 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:00,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:01:00,912 INFO L93 Difference]: Finished difference Result 7796 states and 21608 transitions. [2022-11-21 17:01:00,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-11-21 17:01:00,913 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.7) internal successors, (81), 29 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-21 17:01:00,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:01:00,922 INFO L225 Difference]: With dead ends: 7796 [2022-11-21 17:01:00,922 INFO L226 Difference]: Without dead ends: 7464 [2022-11-21 17:01:00,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9532 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=4498, Invalid=20624, Unknown=0, NotChecked=0, Total=25122 [2022-11-21 17:01:00,923 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 731 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2232 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:01:00,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 0 Invalid, 2324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2232 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-21 17:01:00,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7464 states. [2022-11-21 17:01:01,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7464 to 6712. [2022-11-21 17:01:01,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6712 states, 6711 states have (on average 2.8195499925495455) internal successors, (18922), 6711 states have internal predecessors, (18922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:01,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6712 states to 6712 states and 18922 transitions. [2022-11-21 17:01:01,027 INFO L78 Accepts]: Start accepts. Automaton has 6712 states and 18922 transitions. Word has length 32 [2022-11-21 17:01:01,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:01:01,027 INFO L495 AbstractCegarLoop]: Abstraction has 6712 states and 18922 transitions. [2022-11-21 17:01:01,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.7) internal successors, (81), 29 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:01,027 INFO L276 IsEmpty]: Start isEmpty. Operand 6712 states and 18922 transitions. [2022-11-21 17:01:01,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-21 17:01:01,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:01:01,036 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:01:01,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-21 17:01:01,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:01:01,237 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)] === [2022-11-21 17:01:01,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:01:01,238 INFO L85 PathProgramCache]: Analyzing trace with hash -223146902, now seen corresponding path program 21 times [2022-11-21 17:01:01,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:01:01,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289136881] [2022-11-21 17:01:01,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:01:01,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:01:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:01:02,054 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:01:02,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:01:02,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289136881] [2022-11-21 17:01:02,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289136881] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:01:02,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348047406] [2022-11-21 17:01:02,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:01:02,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:01:02,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:01:02,057 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:01:02,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-21 17:01:02,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-21 17:01:02,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:01:02,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 17:01:02,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:01:03,043 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:01:03,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:01:05,570 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:01:05,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348047406] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:01:05,570 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:01:05,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-11-21 17:01:05,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135111130] [2022-11-21 17:01:05,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:01:05,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-21 17:01:05,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:01:05,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-21 17:01:05,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=693, Unknown=0, NotChecked=0, Total=870 [2022-11-21 17:01:05,572 INFO L87 Difference]: Start difference. First operand 6712 states and 18922 transitions. Second operand has 30 states, 30 states have (on average 2.7) internal successors, (81), 29 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:17,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:01:17,177 INFO L93 Difference]: Finished difference Result 8380 states and 23294 transitions. [2022-11-21 17:01:17,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-11-21 17:01:17,177 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.7) internal successors, (81), 29 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-21 17:01:17,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:01:17,189 INFO L225 Difference]: With dead ends: 8380 [2022-11-21 17:01:17,189 INFO L226 Difference]: Without dead ends: 8116 [2022-11-21 17:01:17,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7201 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=3300, Invalid=16160, Unknown=0, NotChecked=0, Total=19460 [2022-11-21 17:01:17,190 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 862 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2515 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:01:17,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 0 Invalid, 2607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2515 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-21 17:01:17,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8116 states. [2022-11-21 17:01:17,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8116 to 7120. [2022-11-21 17:01:17,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7120 states, 7119 states have (on average 2.8245540103947184) internal successors, (20108), 7119 states have internal predecessors, (20108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:17,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7120 states to 7120 states and 20108 transitions. [2022-11-21 17:01:17,316 INFO L78 Accepts]: Start accepts. Automaton has 7120 states and 20108 transitions. Word has length 32 [2022-11-21 17:01:17,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:01:17,316 INFO L495 AbstractCegarLoop]: Abstraction has 7120 states and 20108 transitions. [2022-11-21 17:01:17,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.7) internal successors, (81), 29 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:17,316 INFO L276 IsEmpty]: Start isEmpty. Operand 7120 states and 20108 transitions. [2022-11-21 17:01:17,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-21 17:01:17,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:01:17,328 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:01:17,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-21 17:01:17,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:01:17,529 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)] === [2022-11-21 17:01:17,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:01:17,529 INFO L85 PathProgramCache]: Analyzing trace with hash -500085748, now seen corresponding path program 22 times [2022-11-21 17:01:17,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:01:17,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891341832] [2022-11-21 17:01:17,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:01:17,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:01:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:01:18,329 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:01:18,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:01:18,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891341832] [2022-11-21 17:01:18,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891341832] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:01:18,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626133556] [2022-11-21 17:01:18,329 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 17:01:18,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:01:18,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:01:18,331 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:01:18,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-21 17:01:18,490 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 17:01:18,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:01:18,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 17:01:18,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:01:19,356 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:01:19,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:01:22,161 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:01:22,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626133556] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:01:22,161 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:01:22,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-11-21 17:01:22,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533689041] [2022-11-21 17:01:22,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:01:22,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-21 17:01:22,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:01:22,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-21 17:01:22,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2022-11-21 17:01:22,163 INFO L87 Difference]: Start difference. First operand 7120 states and 20108 transitions. Second operand has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:33,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:01:33,153 INFO L93 Difference]: Finished difference Result 8704 states and 24182 transitions. [2022-11-21 17:01:33,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-11-21 17:01:33,154 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-21 17:01:33,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:01:33,165 INFO L225 Difference]: With dead ends: 8704 [2022-11-21 17:01:33,165 INFO L226 Difference]: Without dead ends: 8372 [2022-11-21 17:01:33,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5136 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=2439, Invalid=11603, Unknown=0, NotChecked=0, Total=14042 [2022-11-21 17:01:33,166 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 754 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2473 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:01:33,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 0 Invalid, 2556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2473 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-21 17:01:33,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8372 states. [2022-11-21 17:01:33,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8372 to 7488. [2022-11-21 17:01:33,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7488 states, 7487 states have (on average 2.826232135701883) internal successors, (21160), 7487 states have internal predecessors, (21160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:33,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7488 states to 7488 states and 21160 transitions. [2022-11-21 17:01:33,290 INFO L78 Accepts]: Start accepts. Automaton has 7488 states and 21160 transitions. Word has length 32 [2022-11-21 17:01:33,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:01:33,290 INFO L495 AbstractCegarLoop]: Abstraction has 7488 states and 21160 transitions. [2022-11-21 17:01:33,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:33,290 INFO L276 IsEmpty]: Start isEmpty. Operand 7488 states and 21160 transitions. [2022-11-21 17:01:33,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-21 17:01:33,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:01:33,302 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:01:33,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-11-21 17:01:33,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-21 17:01:33,507 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)] === [2022-11-21 17:01:33,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:01:33,507 INFO L85 PathProgramCache]: Analyzing trace with hash -162072116, now seen corresponding path program 23 times [2022-11-21 17:01:33,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:01:33,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654369233] [2022-11-21 17:01:33,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:01:33,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:01:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:01:34,200 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:01:34,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:01:34,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654369233] [2022-11-21 17:01:34,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654369233] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:01:34,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86474289] [2022-11-21 17:01:34,200 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 17:01:34,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:01:34,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:01:34,201 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:01:34,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-21 17:01:34,344 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-21 17:01:34,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:01:34,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 17:01:34,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:01:35,210 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:01:35,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:01:38,217 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:01:38,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86474289] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:01:38,217 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:01:38,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-11-21 17:01:38,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989755295] [2022-11-21 17:01:38,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:01:38,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-21 17:01:38,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:01:38,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-21 17:01:38,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2022-11-21 17:01:38,219 INFO L87 Difference]: Start difference. First operand 7488 states and 21160 transitions. Second operand has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:52,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:01:52,000 INFO L93 Difference]: Finished difference Result 9086 states and 25267 transitions. [2022-11-21 17:01:52,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-11-21 17:01:52,001 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-21 17:01:52,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:01:52,013 INFO L225 Difference]: With dead ends: 9086 [2022-11-21 17:01:52,013 INFO L226 Difference]: Without dead ends: 8732 [2022-11-21 17:01:52,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6271 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=2958, Invalid=13554, Unknown=0, NotChecked=0, Total=16512 [2022-11-21 17:01:52,014 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 833 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2623 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:01:52,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 0 Invalid, 2719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 2623 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-21 17:01:52,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8732 states. [2022-11-21 17:01:52,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8732 to 7888. [2022-11-21 17:01:52,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7888 states, 7887 states have (on average 2.8254089007227083) internal successors, (22284), 7887 states have internal predecessors, (22284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:52,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7888 states to 7888 states and 22284 transitions. [2022-11-21 17:01:52,239 INFO L78 Accepts]: Start accepts. Automaton has 7888 states and 22284 transitions. Word has length 32 [2022-11-21 17:01:52,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:01:52,239 INFO L495 AbstractCegarLoop]: Abstraction has 7888 states and 22284 transitions. [2022-11-21 17:01:52,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:52,240 INFO L276 IsEmpty]: Start isEmpty. Operand 7888 states and 22284 transitions. [2022-11-21 17:01:52,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-21 17:01:52,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:01:52,250 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:01:52,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-21 17:01:52,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-21 17:01:52,450 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)] === [2022-11-21 17:01:52,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:01:52,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1457397034, now seen corresponding path program 24 times [2022-11-21 17:01:52,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:01:52,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139171592] [2022-11-21 17:01:52,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:01:52,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:01:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:01:53,160 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:01:53,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:01:53,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139171592] [2022-11-21 17:01:53,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139171592] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:01:53,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651188568] [2022-11-21 17:01:53,161 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 17:01:53,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:01:53,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:01:53,162 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:01:53,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-21 17:01:53,363 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-21 17:01:53,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:01:53,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 17:01:53,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:01:54,075 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:01:54,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:01:56,529 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:01:56,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651188568] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:01:56,529 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:01:56,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-11-21 17:01:56,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475957490] [2022-11-21 17:01:56,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:01:56,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-21 17:01:56,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:01:56,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-21 17:01:56,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2022-11-21 17:01:56,531 INFO L87 Difference]: Start difference. First operand 7888 states and 22284 transitions. Second operand has 30 states, 30 states have (on average 2.7) internal successors, (81), 29 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:10,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:02:10,312 INFO L93 Difference]: Finished difference Result 9558 states and 26641 transitions. [2022-11-21 17:02:10,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-11-21 17:02:10,312 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.7) internal successors, (81), 29 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-21 17:02:10,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:02:10,326 INFO L225 Difference]: With dead ends: 9558 [2022-11-21 17:02:10,326 INFO L226 Difference]: Without dead ends: 9184 [2022-11-21 17:02:10,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10102 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=4253, Invalid=22153, Unknown=0, NotChecked=0, Total=26406 [2022-11-21 17:02:10,328 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 826 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2356 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:02:10,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 0 Invalid, 2446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 2356 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-21 17:02:10,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9184 states. [2022-11-21 17:02:10,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9184 to 8384. [2022-11-21 17:02:10,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8384 states, 8383 states have (on average 2.8171299057616603) internal successors, (23616), 8383 states have internal predecessors, (23616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:10,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8384 states to 8384 states and 23616 transitions. [2022-11-21 17:02:10,479 INFO L78 Accepts]: Start accepts. Automaton has 8384 states and 23616 transitions. Word has length 32 [2022-11-21 17:02:10,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:02:10,479 INFO L495 AbstractCegarLoop]: Abstraction has 8384 states and 23616 transitions. [2022-11-21 17:02:10,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.7) internal successors, (81), 29 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:10,480 INFO L276 IsEmpty]: Start isEmpty. Operand 8384 states and 23616 transitions. [2022-11-21 17:02:10,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-21 17:02:10,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:02:10,491 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:10,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-21 17:02:10,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-21 17:02:10,691 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)] === [2022-11-21 17:02:10,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:10,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1718278688, now seen corresponding path program 25 times [2022-11-21 17:02:10,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:10,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353168383] [2022-11-21 17:02:10,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:10,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:11,628 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:11,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:11,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353168383] [2022-11-21 17:02:11,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353168383] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:02:11,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700732022] [2022-11-21 17:02:11,629 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-21 17:02:11,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:02:11,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:02:11,630 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:02:11,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-21 17:02:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:11,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 17:02:11,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:02:12,492 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:12,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:02:14,574 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:14,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700732022] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:02:14,574 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:02:14,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2022-11-21 17:02:14,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132077603] [2022-11-21 17:02:14,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:02:14,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-21 17:02:14,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:14,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-21 17:02:14,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=732, Unknown=0, NotChecked=0, Total=930 [2022-11-21 17:02:14,575 INFO L87 Difference]: Start difference. First operand 8384 states and 23616 transitions. Second operand has 31 states, 31 states have (on average 2.5806451612903225) internal successors, (80), 30 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:22,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:02:22,758 INFO L93 Difference]: Finished difference Result 10052 states and 27868 transitions. [2022-11-21 17:02:22,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-11-21 17:02:22,758 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.5806451612903225) internal successors, (80), 30 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-21 17:02:22,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:02:22,772 INFO L225 Difference]: With dead ends: 10052 [2022-11-21 17:02:22,772 INFO L226 Difference]: Without dead ends: 9764 [2022-11-21 17:02:22,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5562 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=2600, Invalid=12162, Unknown=0, NotChecked=0, Total=14762 [2022-11-21 17:02:22,774 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1289 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1795 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1289 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:02:22,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1289 Valid, 0 Invalid, 1895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1795 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-21 17:02:22,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9764 states. [2022-11-21 17:02:22,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9764 to 8736. [2022-11-21 17:02:22,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8736 states, 8735 states have (on average 2.819004006868918) internal successors, (24624), 8735 states have internal predecessors, (24624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:22,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8736 states to 8736 states and 24624 transitions. [2022-11-21 17:02:22,992 INFO L78 Accepts]: Start accepts. Automaton has 8736 states and 24624 transitions. Word has length 32 [2022-11-21 17:02:22,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:02:22,993 INFO L495 AbstractCegarLoop]: Abstraction has 8736 states and 24624 transitions. [2022-11-21 17:02:22,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.5806451612903225) internal successors, (80), 30 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:22,993 INFO L276 IsEmpty]: Start isEmpty. Operand 8736 states and 24624 transitions. [2022-11-21 17:02:23,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-21 17:02:23,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:02:23,006 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:23,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-21 17:02:23,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:02:23,213 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)] === [2022-11-21 17:02:23,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:23,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1966877684, now seen corresponding path program 26 times [2022-11-21 17:02:23,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:23,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636218810] [2022-11-21 17:02:23,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:23,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:24,144 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:24,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:24,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636218810] [2022-11-21 17:02:24,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636218810] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:02:24,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31512152] [2022-11-21 17:02:24,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:02:24,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:02:24,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:02:24,147 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:02:24,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-21 17:02:24,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:02:24,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:02:24,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 17:02:24,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:02:25,279 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:25,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:02:27,957 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:27,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31512152] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:02:27,957 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:02:27,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-11-21 17:02:27,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439278087] [2022-11-21 17:02:27,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:02:27,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-21 17:02:27,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:27,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-21 17:02:27,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2022-11-21 17:02:27,959 INFO L87 Difference]: Start difference. First operand 8736 states and 24624 transitions. Second operand has 30 states, 30 states have (on average 2.7) internal successors, (81), 29 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:43,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:02:43,813 INFO L93 Difference]: Finished difference Result 10028 states and 27913 transitions. [2022-11-21 17:02:43,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-11-21 17:02:43,814 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.7) internal successors, (81), 29 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-21 17:02:43,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:02:43,827 INFO L225 Difference]: With dead ends: 10028 [2022-11-21 17:02:43,827 INFO L226 Difference]: Without dead ends: 9746 [2022-11-21 17:02:43,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9685 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=3882, Invalid=21240, Unknown=0, NotChecked=0, Total=25122 [2022-11-21 17:02:43,829 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1215 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:02:43,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1215 Valid, 0 Invalid, 2374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-21 17:02:43,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9746 states. [2022-11-21 17:02:43,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9746 to 8872. [2022-11-21 17:02:43,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8872 states, 8871 states have (on average 2.8170443016570847) internal successors, (24990), 8871 states have internal predecessors, (24990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:44,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8872 states to 8872 states and 24990 transitions. [2022-11-21 17:02:44,008 INFO L78 Accepts]: Start accepts. Automaton has 8872 states and 24990 transitions. Word has length 32 [2022-11-21 17:02:44,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:02:44,009 INFO L495 AbstractCegarLoop]: Abstraction has 8872 states and 24990 transitions. [2022-11-21 17:02:44,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.7) internal successors, (81), 29 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:44,009 INFO L276 IsEmpty]: Start isEmpty. Operand 8872 states and 24990 transitions. [2022-11-21 17:02:44,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-21 17:02:44,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:02:44,024 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:44,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-21 17:02:44,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-11-21 17:02:44,231 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)] === [2022-11-21 17:02:44,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:44,232 INFO L85 PathProgramCache]: Analyzing trace with hash -776059370, now seen corresponding path program 27 times [2022-11-21 17:02:44,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:44,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315269570] [2022-11-21 17:02:44,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:44,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:44,995 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:44,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:44,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315269570] [2022-11-21 17:02:44,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315269570] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:02:44,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521512488] [2022-11-21 17:02:44,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:02:44,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:02:44,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:02:44,997 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:02:44,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-21 17:02:45,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-21 17:02:45,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:02:45,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 17:02:45,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:02:46,156 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:46,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:02:49,293 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:49,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521512488] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:02:49,294 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:02:49,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-11-21 17:02:49,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182247159] [2022-11-21 17:02:49,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:02:49,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-21 17:02:49,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:49,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-21 17:02:49,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=688, Unknown=0, NotChecked=0, Total=870 [2022-11-21 17:02:49,296 INFO L87 Difference]: Start difference. First operand 8872 states and 24990 transitions. Second operand has 30 states, 30 states have (on average 2.7) internal successors, (81), 29 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:06,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:03:06,174 INFO L93 Difference]: Finished difference Result 10544 states and 29314 transitions. [2022-11-21 17:03:06,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2022-11-21 17:03:06,175 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.7) internal successors, (81), 29 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-21 17:03:06,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:03:06,188 INFO L225 Difference]: With dead ends: 10544 [2022-11-21 17:03:06,189 INFO L226 Difference]: Without dead ends: 10216 [2022-11-21 17:03:06,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10760 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=4328, Invalid=23394, Unknown=0, NotChecked=0, Total=27722 [2022-11-21 17:03:06,191 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 854 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2864 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-21 17:03:06,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 0 Invalid, 2969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2864 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-21 17:03:06,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10216 states. [2022-11-21 17:03:06,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10216 to 9144. [2022-11-21 17:03:06,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9144 states, 9143 states have (on average 2.8167997375041014) internal successors, (25754), 9143 states have internal predecessors, (25754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:06,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9144 states to 9144 states and 25754 transitions. [2022-11-21 17:03:06,370 INFO L78 Accepts]: Start accepts. Automaton has 9144 states and 25754 transitions. Word has length 32 [2022-11-21 17:03:06,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:03:06,371 INFO L495 AbstractCegarLoop]: Abstraction has 9144 states and 25754 transitions. [2022-11-21 17:03:06,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.7) internal successors, (81), 29 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:06,371 INFO L276 IsEmpty]: Start isEmpty. Operand 9144 states and 25754 transitions. [2022-11-21 17:03:06,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-21 17:03:06,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:03:06,384 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:03:06,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-21 17:03:06,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:03:06,585 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)] === [2022-11-21 17:03:06,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:03:06,585 INFO L85 PathProgramCache]: Analyzing trace with hash -633371016, now seen corresponding path program 28 times [2022-11-21 17:03:06,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:03:06,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263415587] [2022-11-21 17:03:06,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:06,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:03:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:07,189 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:03:07,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:03:07,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263415587] [2022-11-21 17:03:07,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263415587] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:03:07,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5666860] [2022-11-21 17:03:07,190 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 17:03:07,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:03:07,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:03:07,191 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:03:07,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-21 17:03:07,337 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 17:03:07,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:03:07,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 17:03:07,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:03:08,125 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:03:08,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:03:10,949 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:03:10,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5666860] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:03:10,950 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:03:10,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2022-11-21 17:03:10,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267412652] [2022-11-21 17:03:10,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:03:10,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-21 17:03:10,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:03:10,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-21 17:03:10,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=735, Unknown=0, NotChecked=0, Total=930 [2022-11-21 17:03:10,952 INFO L87 Difference]: Start difference. First operand 9144 states and 25754 transitions. Second operand has 31 states, 31 states have (on average 2.5806451612903225) internal successors, (80), 30 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:27,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:03:27,173 INFO L93 Difference]: Finished difference Result 10946 states and 30350 transitions. [2022-11-21 17:03:27,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-11-21 17:03:27,173 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.5806451612903225) internal successors, (80), 30 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-21 17:03:27,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:03:27,187 INFO L225 Difference]: With dead ends: 10946 [2022-11-21 17:03:27,187 INFO L226 Difference]: Without dead ends: 10458 [2022-11-21 17:03:27,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8481 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=3634, Invalid=17828, Unknown=0, NotChecked=0, Total=21462 [2022-11-21 17:03:27,188 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 856 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2846 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-21 17:03:27,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 0 Invalid, 2946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2846 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-21 17:03:27,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10458 states. [2022-11-21 17:03:27,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10458 to 9536. [2022-11-21 17:03:27,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9536 states, 9535 states have (on average 2.81489250131096) internal successors, (26840), 9535 states have internal predecessors, (26840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:27,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9536 states to 9536 states and 26840 transitions. [2022-11-21 17:03:27,343 INFO L78 Accepts]: Start accepts. Automaton has 9536 states and 26840 transitions. Word has length 32 [2022-11-21 17:03:27,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:03:27,343 INFO L495 AbstractCegarLoop]: Abstraction has 9536 states and 26840 transitions. [2022-11-21 17:03:27,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.5806451612903225) internal successors, (80), 30 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:27,344 INFO L276 IsEmpty]: Start isEmpty. Operand 9536 states and 26840 transitions. [2022-11-21 17:03:27,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-21 17:03:27,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:03:27,355 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:03:27,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-11-21 17:03:27,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:03:27,556 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)] === [2022-11-21 17:03:27,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:03:27,556 INFO L85 PathProgramCache]: Analyzing trace with hash -509912298, now seen corresponding path program 29 times [2022-11-21 17:03:27,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:03:27,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360571124] [2022-11-21 17:03:27,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:27,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:03:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:28,089 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:03:28,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:03:28,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360571124] [2022-11-21 17:03:28,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360571124] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:03:28,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853584856] [2022-11-21 17:03:28,090 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 17:03:28,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:03:28,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:03:28,091 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:03:28,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-21 17:03:28,241 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-11-21 17:03:28,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:03:28,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 17:03:28,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:03:28,903 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:03:28,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:03:31,261 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:03:31,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853584856] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:03:31,262 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:03:31,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-11-21 17:03:31,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970430366] [2022-11-21 17:03:31,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:03:31,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-21 17:03:31,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:03:31,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-21 17:03:31,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=690, Unknown=0, NotChecked=0, Total=870 [2022-11-21 17:03:31,263 INFO L87 Difference]: Start difference. First operand 9536 states and 26840 transitions. Second operand has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:39,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:03:39,456 INFO L93 Difference]: Finished difference Result 11376 states and 31688 transitions. [2022-11-21 17:03:39,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-11-21 17:03:39,456 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-21 17:03:39,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:03:39,475 INFO L225 Difference]: With dead ends: 11376 [2022-11-21 17:03:39,475 INFO L226 Difference]: Without dead ends: 10992 [2022-11-21 17:03:39,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5613 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=2654, Invalid=12352, Unknown=0, NotChecked=0, Total=15006 [2022-11-21 17:03:39,476 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1058 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2011 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:03:39,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 0 Invalid, 2133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 2011 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-21 17:03:39,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10992 states. [2022-11-21 17:03:39,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10992 to 9936. [2022-11-21 17:03:39,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9936 states, 9935 states have (on average 2.8146955208857576) internal successors, (27964), 9935 states have internal predecessors, (27964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:39,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9936 states to 9936 states and 27964 transitions. [2022-11-21 17:03:39,710 INFO L78 Accepts]: Start accepts. Automaton has 9936 states and 27964 transitions. Word has length 32 [2022-11-21 17:03:39,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:03:39,711 INFO L495 AbstractCegarLoop]: Abstraction has 9936 states and 27964 transitions. [2022-11-21 17:03:39,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:39,711 INFO L276 IsEmpty]: Start isEmpty. Operand 9936 states and 27964 transitions. [2022-11-21 17:03:39,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-21 17:03:39,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:03:39,724 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:03:39,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-11-21 17:03:39,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:03:39,926 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)] === [2022-11-21 17:03:39,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:03:39,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1773274514, now seen corresponding path program 3 times [2022-11-21 17:03:39,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:03:39,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107031933] [2022-11-21 17:03:39,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:39,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:03:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:40,956 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:03:40,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:03:40,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107031933] [2022-11-21 17:03:40,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107031933] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:03:40,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413370568] [2022-11-21 17:03:40,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:03:40,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:03:40,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:03:40,958 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:03:40,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-11-21 17:03:41,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-21 17:03:41,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:03:41,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 17:03:41,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:03:42,050 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:03:42,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:03:43,438 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:03:43,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413370568] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:03:43,438 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:03:43,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-11-21 17:03:43,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770911023] [2022-11-21 17:03:43,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:03:43,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-21 17:03:43,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:03:43,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-21 17:03:43,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2022-11-21 17:03:43,440 INFO L87 Difference]: Start difference. First operand 9936 states and 27964 transitions. Second operand has 30 states, 30 states have (on average 2.7333333333333334) internal successors, (82), 29 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:51,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:03:51,794 INFO L93 Difference]: Finished difference Result 10864 states and 30289 transitions. [2022-11-21 17:03:51,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-11-21 17:03:51,794 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.7333333333333334) internal successors, (82), 29 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-21 17:03:51,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:03:51,814 INFO L225 Difference]: With dead ends: 10864 [2022-11-21 17:03:51,814 INFO L226 Difference]: Without dead ends: 10514 [2022-11-21 17:03:51,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5431 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=2865, Invalid=12635, Unknown=0, NotChecked=0, Total=15500 [2022-11-21 17:03:51,816 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 518 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 2494 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 2559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:03:51,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 3 Invalid, 2559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2494 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-21 17:03:51,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10514 states. [2022-11-21 17:03:51,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10514 to 10152. [2022-11-21 17:03:51,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10152 states, 10151 states have (on average 2.814895084228155) internal successors, (28574), 10151 states have internal predecessors, (28574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:52,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10152 states to 10152 states and 28574 transitions. [2022-11-21 17:03:52,017 INFO L78 Accepts]: Start accepts. Automaton has 10152 states and 28574 transitions. Word has length 32 [2022-11-21 17:03:52,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:03:52,017 INFO L495 AbstractCegarLoop]: Abstraction has 10152 states and 28574 transitions. [2022-11-21 17:03:52,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.7333333333333334) internal successors, (82), 29 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:52,017 INFO L276 IsEmpty]: Start isEmpty. Operand 10152 states and 28574 transitions. [2022-11-21 17:03:52,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-21 17:03:52,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:03:52,032 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:03:52,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-11-21 17:03:52,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-11-21 17:03:52,233 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)] === [2022-11-21 17:03:52,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:03:52,233 INFO L85 PathProgramCache]: Analyzing trace with hash 344296407, now seen corresponding path program 30 times [2022-11-21 17:03:52,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:03:52,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347651741] [2022-11-21 17:03:52,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:52,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:03:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:53,360 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:03:53,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:03:53,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347651741] [2022-11-21 17:03:53,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347651741] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:03:53,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648768116] [2022-11-21 17:03:53,361 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 17:03:53,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:03:53,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:03:53,362 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:03:53,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-21 17:03:53,546 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-11-21 17:03:53,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:03:53,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-21 17:03:53,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:03:54,431 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:03:54,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:03:57,160 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:03:57,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648768116] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:03:57,161 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:03:57,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 30 [2022-11-21 17:03:57,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676237474] [2022-11-21 17:03:57,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:03:57,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-21 17:03:57,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:03:57,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-21 17:03:57,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=735, Unknown=0, NotChecked=0, Total=930 [2022-11-21 17:03:57,162 INFO L87 Difference]: Start difference. First operand 10152 states and 28574 transitions. Second operand has 31 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 30 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:13,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:04:13,740 INFO L93 Difference]: Finished difference Result 12242 states and 34014 transitions. [2022-11-21 17:04:13,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-11-21 17:04:13,741 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 30 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-21 17:04:13,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:04:13,759 INFO L225 Difference]: With dead ends: 12242 [2022-11-21 17:04:13,759 INFO L226 Difference]: Without dead ends: 11902 [2022-11-21 17:04:13,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6889 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=3486, Invalid=14070, Unknown=0, NotChecked=0, Total=17556 [2022-11-21 17:04:13,761 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1009 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2827 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:04:13,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1009 Valid, 0 Invalid, 2954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2827 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-21 17:04:13,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11902 states. [2022-11-21 17:04:13,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11902 to 10824. [2022-11-21 17:04:13,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10824 states, 10823 states have (on average 2.8167790815855125) internal successors, (30486), 10823 states have internal predecessors, (30486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:13,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10824 states to 10824 states and 30486 transitions. [2022-11-21 17:04:13,952 INFO L78 Accepts]: Start accepts. Automaton has 10824 states and 30486 transitions. Word has length 34 [2022-11-21 17:04:13,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:04:13,952 INFO L495 AbstractCegarLoop]: Abstraction has 10824 states and 30486 transitions. [2022-11-21 17:04:13,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 30 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:13,953 INFO L276 IsEmpty]: Start isEmpty. Operand 10824 states and 30486 transitions. [2022-11-21 17:04:13,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-21 17:04:13,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:04:13,967 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:13,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-11-21 17:04:14,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-11-21 17:04:14,170 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)] === [2022-11-21 17:04:14,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:14,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1745612457, now seen corresponding path program 31 times [2022-11-21 17:04:14,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:04:14,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313150537] [2022-11-21 17:04:14,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:14,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:04:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:16,147 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:04:16,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:04:16,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313150537] [2022-11-21 17:04:16,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313150537] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:04:16,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414884619] [2022-11-21 17:04:16,148 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-21 17:04:16,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:04:16,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:04:16,151 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:04:16,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-11-21 17:04:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:16,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-21 17:04:16,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:04:17,291 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:04:17,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:04:21,639 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:04:21,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414884619] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:04:21,640 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:04:21,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2022-11-21 17:04:21,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944046462] [2022-11-21 17:04:21,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:04:21,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-21 17:04:21,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:04:21,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-21 17:04:21,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=794, Unknown=0, NotChecked=0, Total=992 [2022-11-21 17:04:21,642 INFO L87 Difference]: Start difference. First operand 10824 states and 30486 transitions. Second operand has 32 states, 32 states have (on average 2.46875) internal successors, (79), 31 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:44,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:04:44,207 INFO L93 Difference]: Finished difference Result 13200 states and 36689 transitions. [2022-11-21 17:04:44,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-11-21 17:04:44,207 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.46875) internal successors, (79), 31 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-21 17:04:44,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:04:44,228 INFO L225 Difference]: With dead ends: 13200 [2022-11-21 17:04:44,229 INFO L226 Difference]: Without dead ends: 12814 [2022-11-21 17:04:44,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8856 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=3562, Invalid=19088, Unknown=0, NotChecked=0, Total=22650 [2022-11-21 17:04:44,230 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1229 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3038 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1229 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 3038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:04:44,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1229 Valid, 0 Invalid, 3182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 3038 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-21 17:04:44,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12814 states. [2022-11-21 17:04:44,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12814 to 11496. [2022-11-21 17:04:44,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11496 states, 11495 states have (on average 2.8198347107438018) internal successors, (32414), 11495 states have internal predecessors, (32414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:44,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11496 states to 11496 states and 32414 transitions. [2022-11-21 17:04:44,494 INFO L78 Accepts]: Start accepts. Automaton has 11496 states and 32414 transitions. Word has length 34 [2022-11-21 17:04:44,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:04:44,494 INFO L495 AbstractCegarLoop]: Abstraction has 11496 states and 32414 transitions. [2022-11-21 17:04:44,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.46875) internal successors, (79), 31 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:44,494 INFO L276 IsEmpty]: Start isEmpty. Operand 11496 states and 32414 transitions. [2022-11-21 17:04:44,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-21 17:04:44,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:04:44,509 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:44,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-11-21 17:04:44,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-11-21 17:04:44,710 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)] === [2022-11-21 17:04:44,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:44,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1193229895, now seen corresponding path program 32 times [2022-11-21 17:04:44,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:04:44,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093249627] [2022-11-21 17:04:44,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:44,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:04:44,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:45,444 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 11 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:04:45,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:04:45,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093249627] [2022-11-21 17:04:45,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093249627] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:04:45,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046745208] [2022-11-21 17:04:45,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:04:45,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:04:45,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:04:45,446 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:04:45,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-11-21 17:04:45,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:04:45,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:04:45,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-21 17:04:45,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:04:46,790 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:04:46,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:04:50,440 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:04:50,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046745208] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:04:50,440 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:04:50,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-11-21 17:04:50,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029180887] [2022-11-21 17:04:50,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:04:50,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-21 17:04:50,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:04:50,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-21 17:04:50,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=844, Unknown=0, NotChecked=0, Total=1056 [2022-11-21 17:04:50,442 INFO L87 Difference]: Start difference. First operand 11496 states and 32414 transitions. Second operand has 33 states, 33 states have (on average 2.8484848484848486) internal successors, (94), 32 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:05:23,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:05:23,350 INFO L93 Difference]: Finished difference Result 14088 states and 39144 transitions. [2022-11-21 17:05:23,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2022-11-21 17:05:23,350 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.8484848484848486) internal successors, (94), 32 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-21 17:05:23,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:05:23,384 INFO L225 Difference]: With dead ends: 14088 [2022-11-21 17:05:23,384 INFO L226 Difference]: Without dead ends: 13628 [2022-11-21 17:05:23,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21008 ImplicationChecksByTransitivity, 29.7s TimeCoverageRelationStatistics Valid=7468, Invalid=42484, Unknown=0, NotChecked=0, Total=49952 [2022-11-21 17:05:23,389 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1080 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4808 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 4808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:05:23,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 0 Invalid, 4942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 4808 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-21 17:05:23,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13628 states. [2022-11-21 17:05:23,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13628 to 12072. [2022-11-21 17:05:23,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12072 states, 12071 states have (on average 2.8198160881451413) internal successors, (34038), 12071 states have internal predecessors, (34038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:05:23,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12072 states to 12072 states and 34038 transitions. [2022-11-21 17:05:23,638 INFO L78 Accepts]: Start accepts. Automaton has 12072 states and 34038 transitions. Word has length 34 [2022-11-21 17:05:23,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:05:23,638 INFO L495 AbstractCegarLoop]: Abstraction has 12072 states and 34038 transitions. [2022-11-21 17:05:23,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.8484848484848486) internal successors, (94), 32 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:05:23,638 INFO L276 IsEmpty]: Start isEmpty. Operand 12072 states and 34038 transitions. [2022-11-21 17:05:23,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-21 17:05:23,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:05:23,654 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:05:23,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-11-21 17:05:23,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-11-21 17:05:23,855 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)] === [2022-11-21 17:05:23,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:05:23,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1601274337, now seen corresponding path program 33 times [2022-11-21 17:05:23,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:05:23,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104976186] [2022-11-21 17:05:23,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:05:23,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:05:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:24,611 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:05:24,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:05:24,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104976186] [2022-11-21 17:05:24,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104976186] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:05:24,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090298300] [2022-11-21 17:05:24,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:05:24,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:05:24,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:05:24,612 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:05:24,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-11-21 17:05:24,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-21 17:05:24,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:05:24,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-21 17:05:24,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:05:25,842 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:05:25,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:05:29,728 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:05:29,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090298300] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:05:29,729 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:05:29,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 30 [2022-11-21 17:05:29,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201651136] [2022-11-21 17:05:29,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:05:29,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-21 17:05:29,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:05:29,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-21 17:05:29,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=733, Unknown=0, NotChecked=0, Total=930 [2022-11-21 17:05:29,730 INFO L87 Difference]: Start difference. First operand 12072 states and 34038 transitions. Second operand has 31 states, 31 states have (on average 2.774193548387097) internal successors, (86), 30 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:05:48,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:05:48,717 INFO L93 Difference]: Finished difference Result 13696 states and 38286 transitions. [2022-11-21 17:05:48,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-11-21 17:05:48,718 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.774193548387097) internal successors, (86), 30 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-21 17:05:48,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:05:48,745 INFO L225 Difference]: With dead ends: 13696 [2022-11-21 17:05:48,745 INFO L226 Difference]: Without dead ends: 13456 [2022-11-21 17:05:48,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7996 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=3164, Invalid=18006, Unknown=0, NotChecked=0, Total=21170 [2022-11-21 17:05:48,747 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 801 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3577 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 3577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:05:48,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 0 Invalid, 3678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 3577 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-21 17:05:48,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13456 states. [2022-11-21 17:05:48,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13456 to 12584. [2022-11-21 17:05:48,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12584 states, 12583 states have (on average 2.822697289994437) internal successors, (35518), 12583 states have internal predecessors, (35518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:05:49,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12584 states to 12584 states and 35518 transitions. [2022-11-21 17:05:49,019 INFO L78 Accepts]: Start accepts. Automaton has 12584 states and 35518 transitions. Word has length 34 [2022-11-21 17:05:49,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:05:49,019 INFO L495 AbstractCegarLoop]: Abstraction has 12584 states and 35518 transitions. [2022-11-21 17:05:49,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.774193548387097) internal successors, (86), 30 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:05:49,019 INFO L276 IsEmpty]: Start isEmpty. Operand 12584 states and 35518 transitions. [2022-11-21 17:05:49,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-21 17:05:49,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:05:49,038 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:05:49,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-11-21 17:05:49,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-11-21 17:05:49,239 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)] === [2022-11-21 17:05:49,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:05:49,239 INFO L85 PathProgramCache]: Analyzing trace with hash -550672208, now seen corresponding path program 34 times [2022-11-21 17:05:49,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:05:49,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588385054] [2022-11-21 17:05:49,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:05:49,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:05:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:53,226 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 1 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:05:53,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:05:53,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588385054] [2022-11-21 17:05:53,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588385054] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:05:53,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835542077] [2022-11-21 17:05:53,227 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 17:05:53,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:05:53,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:05:53,228 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:05:53,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-11-21 17:05:53,391 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 17:05:53,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:05:53,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-21 17:05:53,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:05:54,867 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 1 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:05:54,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:05:58,095 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 1 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:05:58,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835542077] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:05:58,095 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:05:58,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 36 [2022-11-21 17:05:58,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123706369] [2022-11-21 17:05:58,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:05:58,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-21 17:05:58,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:05:58,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-21 17:05:58,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1048, Unknown=0, NotChecked=0, Total=1332 [2022-11-21 17:05:58,097 INFO L87 Difference]: Start difference. First operand 12584 states and 35518 transitions. Second operand has 37 states, 37 states have (on average 2.4864864864864864) internal successors, (92), 36 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:06:14,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:06:14,697 INFO L93 Difference]: Finished difference Result 14536 states and 40566 transitions. [2022-11-21 17:06:14,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-11-21 17:06:14,698 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.4864864864864864) internal successors, (92), 36 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-21 17:06:14,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:06:14,724 INFO L225 Difference]: With dead ends: 14536 [2022-11-21 17:06:14,724 INFO L226 Difference]: Without dead ends: 14180 [2022-11-21 17:06:14,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6331 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=3098, Invalid=14458, Unknown=0, NotChecked=0, Total=17556 [2022-11-21 17:06:14,726 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1379 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2861 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 2861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-21 17:06:14,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1379 Valid, 0 Invalid, 3012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 2861 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-21 17:06:14,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14180 states. [2022-11-21 17:06:14,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14180 to 12968. [2022-11-21 17:06:14,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12968 states, 12967 states have (on average 2.8236292126166425) internal successors, (36614), 12967 states have internal predecessors, (36614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:06:15,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12968 states to 12968 states and 36614 transitions. [2022-11-21 17:06:15,014 INFO L78 Accepts]: Start accepts. Automaton has 12968 states and 36614 transitions. Word has length 36 [2022-11-21 17:06:15,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:06:15,014 INFO L495 AbstractCegarLoop]: Abstraction has 12968 states and 36614 transitions. [2022-11-21 17:06:15,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.4864864864864864) internal successors, (92), 36 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:06:15,015 INFO L276 IsEmpty]: Start isEmpty. Operand 12968 states and 36614 transitions. [2022-11-21 17:06:15,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-21 17:06:15,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:06:15,034 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:06:15,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-11-21 17:06:15,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b280e36-68a8-4057-b674-c607cc78098c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2022-11-21 17:06:15,239 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)] === [2022-11-21 17:06:15,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:06:15,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1325372296, now seen corresponding path program 35 times [2022-11-21 17:06:15,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:06:15,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262572150] [2022-11-21 17:06:15,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:06:15,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:06:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat