./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/locks/test_locks_12.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58a64e-1e88-48af-a7e4-710794f3ce96/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58a64e-1e88-48af-a7e4-710794f3ce96/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58a64e-1e88-48af-a7e4-710794f3ce96/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58a64e-1e88-48af-a7e4-710794f3ce96/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58a64e-1e88-48af-a7e4-710794f3ce96/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58a64e-1e88-48af-a7e4-710794f3ce96/bin/uautomizer-GMMbpWq8iD --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 12c3feea735c5360de013afbcf9aaa3880d39f75cbb7661493cccf003151044d ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:37:47,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:37:47,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:37:47,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:37:47,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:37:47,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:37:47,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:37:47,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:37:47,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:37:47,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:37:47,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:37:47,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:37:47,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:37:47,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:37:47,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:37:47,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:37:47,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:37:47,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:37:47,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:37:47,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:37:47,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:37:47,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:37:47,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:37:47,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:37:47,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:37:47,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:37:47,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:37:47,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:37:47,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:37:47,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:37:47,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:37:47,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:37:47,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:37:47,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:37:47,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:37:47,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:37:47,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:37:47,433 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:37:47,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:37:47,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:37:47,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:37:47,437 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58a64e-1e88-48af-a7e4-710794f3ce96/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 23:37:47,478 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:37:47,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:37:47,479 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:37:47,479 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:37:47,480 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:37:47,481 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:37:47,481 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:37:47,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:37:47,482 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:37:47,482 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:37:47,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:37:47,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:37:47,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:37:47,483 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:37:47,483 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:37:47,483 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 23:37:47,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:37:47,484 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:37:47,484 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:37:47,484 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:37:47,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:37:47,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:37:47,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:37:47,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:37:47,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:37:47,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:37:47,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:37:47,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:37:47,494 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:37:47,496 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_8b58a64e-1e88-48af-a7e4-710794f3ce96/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58a64e-1e88-48af-a7e4-710794f3ce96/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12c3feea735c5360de013afbcf9aaa3880d39f75cbb7661493cccf003151044d [2021-10-28 23:37:47,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:37:47,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:37:47,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:37:47,921 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:37:47,926 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:37:47,927 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58a64e-1e88-48af-a7e4-710794f3ce96/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/locks/test_locks_12.c [2021-10-28 23:37:48,037 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58a64e-1e88-48af-a7e4-710794f3ce96/bin/uautomizer-GMMbpWq8iD/data/6e1c374d7/eec2a4d9c8284656b32d49493865abeb/FLAGfd9da0ff0 [2021-10-28 23:37:48,622 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:37:48,623 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58a64e-1e88-48af-a7e4-710794f3ce96/sv-benchmarks/c/locks/test_locks_12.c [2021-10-28 23:37:48,634 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58a64e-1e88-48af-a7e4-710794f3ce96/bin/uautomizer-GMMbpWq8iD/data/6e1c374d7/eec2a4d9c8284656b32d49493865abeb/FLAGfd9da0ff0 [2021-10-28 23:37:48,951 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58a64e-1e88-48af-a7e4-710794f3ce96/bin/uautomizer-GMMbpWq8iD/data/6e1c374d7/eec2a4d9c8284656b32d49493865abeb [2021-10-28 23:37:48,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:37:48,956 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:37:48,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:37:48,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:37:48,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:37:48,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:37:48" (1/1) ... [2021-10-28 23:37:48,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@139d563a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:37:48, skipping insertion in model container [2021-10-28 23:37:48,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:37:48" (1/1) ... [2021-10-28 23:37:48,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:37:49,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:37:49,331 WARN L228 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_8b58a64e-1e88-48af-a7e4-710794f3ce96/sv-benchmarks/c/locks/test_locks_12.c[4591,4604] [2021-10-28 23:37:49,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:37:49,349 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:37:49,405 WARN L228 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_8b58a64e-1e88-48af-a7e4-710794f3ce96/sv-benchmarks/c/locks/test_locks_12.c[4591,4604] [2021-10-28 23:37:49,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:37:49,435 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:37:49,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:37:49 WrapperNode [2021-10-28 23:37:49,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:37:49,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:37:49,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:37:49,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:37:49,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:37:49" (1/1) ... [2021-10-28 23:37:49,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:37:49" (1/1) ... [2021-10-28 23:37:49,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:37:49" (1/1) ... [2021-10-28 23:37:49,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:37:49" (1/1) ... [2021-10-28 23:37:49,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:37:49" (1/1) ... [2021-10-28 23:37:49,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:37:49" (1/1) ... [2021-10-28 23:37:49,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:37:49" (1/1) ... [2021-10-28 23:37:49,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:37:49,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:37:49,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:37:49,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:37:49,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:37:49" (1/1) ... [2021-10-28 23:37:49,510 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:37:49,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58a64e-1e88-48af-a7e4-710794f3ce96/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:37:49,542 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58a64e-1e88-48af-a7e4-710794f3ce96/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:37:49,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58a64e-1e88-48af-a7e4-710794f3ce96/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:37:49,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 23:37:49,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:37:49,607 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 23:37:49,608 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 23:37:49,608 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 23:37:49,609 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 23:37:49,609 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 23:37:49,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:37:49,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 23:37:49,611 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 23:37:49,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 23:37:49,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:37:49,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:37:49,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:37:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:37:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:37:50,158 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:37:50,158 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-28 23:37:50,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:37:50 BoogieIcfgContainer [2021-10-28 23:37:50,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:37:50,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:37:50,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:37:50,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:37:50,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:37:48" (1/3) ... [2021-10-28 23:37:50,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a4514ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:37:50, skipping insertion in model container [2021-10-28 23:37:50,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:37:49" (2/3) ... [2021-10-28 23:37:50,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a4514ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:37:50, skipping insertion in model container [2021-10-28 23:37:50,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:37:50" (3/3) ... [2021-10-28 23:37:50,174 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_12.c [2021-10-28 23:37:50,181 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:37:50,181 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-28 23:37:50,236 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:37:50,245 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:37:50,245 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-28 23:37:50,266 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 45 states have (on average 1.9111111111111112) internal successors, (86), 47 states have internal predecessors, (86), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:37:50,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 23:37:50,276 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:37:50,276 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:37:50,277 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr1ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:37:50,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:37:50,285 INFO L85 PathProgramCache]: Analyzing trace with hash -2024597557, now seen corresponding path program 1 times [2021-10-28 23:37:50,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:37:50,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167585832] [2021-10-28 23:37:50,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:37:50,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:37:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:50,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:37:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:50,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:37:50,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:37:50,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167585832] [2021-10-28 23:37:50,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167585832] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:37:50,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:37:50,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:37:50,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788518300] [2021-10-28 23:37:50,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:37:50,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:37:50,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:37:50,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:37:50,602 INFO L87 Difference]: Start difference. First operand has 52 states, 45 states have (on average 1.9111111111111112) internal successors, (86), 47 states have internal predecessors, (86), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:50,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:37:50,648 INFO L93 Difference]: Finished difference Result 51 states and 86 transitions. [2021-10-28 23:37:50,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:37:50,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-10-28 23:37:50,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:37:50,680 INFO L225 Difference]: With dead ends: 51 [2021-10-28 23:37:50,681 INFO L226 Difference]: Without dead ends: 46 [2021-10-28 23:37:50,683 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:37:50,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-28 23:37:50,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-10-28 23:37:50,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 42 states have (on average 1.8571428571428572) internal successors, (78), 42 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:50,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 81 transitions. [2021-10-28 23:37:50,769 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 81 transitions. Word has length 9 [2021-10-28 23:37:50,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:37:50,769 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 81 transitions. [2021-10-28 23:37:50,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:50,770 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 81 transitions. [2021-10-28 23:37:50,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 23:37:50,771 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:37:50,772 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:37:50,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:37:50,773 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:37:50,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:37:50,774 INFO L85 PathProgramCache]: Analyzing trace with hash 80003194, now seen corresponding path program 1 times [2021-10-28 23:37:50,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:37:50,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506087420] [2021-10-28 23:37:50,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:37:50,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:37:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:51,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:37:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:51,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:37:51,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:37:51,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506087420] [2021-10-28 23:37:51,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506087420] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:37:51,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:37:51,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:37:51,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401096223] [2021-10-28 23:37:51,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:37:51,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:37:51,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:37:51,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:37:51,058 INFO L87 Difference]: Start difference. First operand 46 states and 81 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:51,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:37:51,363 INFO L93 Difference]: Finished difference Result 85 states and 153 transitions. [2021-10-28 23:37:51,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:37:51,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-10-28 23:37:51,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:37:51,366 INFO L225 Difference]: With dead ends: 85 [2021-10-28 23:37:51,367 INFO L226 Difference]: Without dead ends: 85 [2021-10-28 23:37:51,368 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:37:51,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-10-28 23:37:51,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 59. [2021-10-28 23:37:51,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 55 states have (on average 1.8727272727272728) internal successors, (103), 55 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:51,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 106 transitions. [2021-10-28 23:37:51,381 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 106 transitions. Word has length 23 [2021-10-28 23:37:51,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:37:51,386 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 106 transitions. [2021-10-28 23:37:51,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:51,387 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 106 transitions. [2021-10-28 23:37:51,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 23:37:51,392 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:37:51,393 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:37:51,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:37:51,394 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:37:51,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:37:51,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1199860484, now seen corresponding path program 1 times [2021-10-28 23:37:51,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:37:51,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688319274] [2021-10-28 23:37:51,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:37:51,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:37:51,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:51,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:37:51,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:51,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:37:51,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:37:51,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688319274] [2021-10-28 23:37:51,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688319274] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:37:51,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:37:51,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:37:51,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997646873] [2021-10-28 23:37:51,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:37:51,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:37:51,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:37:51,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:37:51,556 INFO L87 Difference]: Start difference. First operand 59 states and 106 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:51,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:37:51,776 INFO L93 Difference]: Finished difference Result 85 states and 151 transitions. [2021-10-28 23:37:51,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:37:51,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-10-28 23:37:51,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:37:51,781 INFO L225 Difference]: With dead ends: 85 [2021-10-28 23:37:51,781 INFO L226 Difference]: Without dead ends: 85 [2021-10-28 23:37:51,782 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:37:51,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-10-28 23:37:51,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2021-10-28 23:37:51,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 79 states have (on average 1.860759493670886) internal successors, (147), 79 states have internal predecessors, (147), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:51,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 150 transitions. [2021-10-28 23:37:51,807 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 150 transitions. Word has length 23 [2021-10-28 23:37:51,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:37:51,807 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 150 transitions. [2021-10-28 23:37:51,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:51,808 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 150 transitions. [2021-10-28 23:37:51,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 23:37:51,809 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:37:51,812 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:37:51,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:37:51,813 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:37:51,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:37:51,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1814655547, now seen corresponding path program 1 times [2021-10-28 23:37:51,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:37:51,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027694710] [2021-10-28 23:37:51,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:37:51,824 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:37:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:51,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:37:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:51,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:37:51,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:37:51,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027694710] [2021-10-28 23:37:51,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027694710] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:37:51,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:37:51,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:37:51,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064141957] [2021-10-28 23:37:51,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:37:51,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:37:51,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:37:51,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:37:51,988 INFO L87 Difference]: Start difference. First operand 83 states and 150 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:52,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:37:52,270 INFO L93 Difference]: Finished difference Result 88 states and 153 transitions. [2021-10-28 23:37:52,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:37:52,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-10-28 23:37:52,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:37:52,273 INFO L225 Difference]: With dead ends: 88 [2021-10-28 23:37:52,274 INFO L226 Difference]: Without dead ends: 88 [2021-10-28 23:37:52,275 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:37:52,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-28 23:37:52,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2021-10-28 23:37:52,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 82 states have (on average 1.8170731707317074) internal successors, (149), 82 states have internal predecessors, (149), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:52,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 152 transitions. [2021-10-28 23:37:52,309 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 152 transitions. Word has length 24 [2021-10-28 23:37:52,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:37:52,310 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 152 transitions. [2021-10-28 23:37:52,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:52,311 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 152 transitions. [2021-10-28 23:37:52,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 23:37:52,312 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:37:52,312 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:37:52,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:37:52,313 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:37:52,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:37:52,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1459243395, now seen corresponding path program 1 times [2021-10-28 23:37:52,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:37:52,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588511122] [2021-10-28 23:37:52,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:37:52,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:37:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:52,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:37:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:52,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:37:52,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:37:52,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588511122] [2021-10-28 23:37:52,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588511122] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:37:52,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:37:52,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:37:52,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735160640] [2021-10-28 23:37:52,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:37:52,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:37:52,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:37:52,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:37:52,429 INFO L87 Difference]: Start difference. First operand 86 states and 152 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:52,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:37:52,690 INFO L93 Difference]: Finished difference Result 161 states and 286 transitions. [2021-10-28 23:37:52,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:37:52,691 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-10-28 23:37:52,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:37:52,694 INFO L225 Difference]: With dead ends: 161 [2021-10-28 23:37:52,694 INFO L226 Difference]: Without dead ends: 161 [2021-10-28 23:37:52,694 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:37:52,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-10-28 23:37:52,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 159. [2021-10-28 23:37:52,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 155 states have (on average 1.8193548387096774) internal successors, (282), 155 states have internal predecessors, (282), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:52,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 285 transitions. [2021-10-28 23:37:52,716 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 285 transitions. Word has length 24 [2021-10-28 23:37:52,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:37:52,716 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 285 transitions. [2021-10-28 23:37:52,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:52,717 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 285 transitions. [2021-10-28 23:37:52,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 23:37:52,719 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:37:52,719 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:37:52,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:37:52,720 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:37:52,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:37:52,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1555860223, now seen corresponding path program 1 times [2021-10-28 23:37:52,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:37:52,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988627434] [2021-10-28 23:37:52,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:37:52,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:37:52,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:52,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:37:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:52,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:37:52,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:37:52,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988627434] [2021-10-28 23:37:52,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988627434] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:37:52,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:37:52,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:37:52,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986617883] [2021-10-28 23:37:52,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:37:52,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:37:52,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:37:52,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:37:52,793 INFO L87 Difference]: Start difference. First operand 159 states and 285 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:53,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:37:53,006 INFO L93 Difference]: Finished difference Result 205 states and 368 transitions. [2021-10-28 23:37:53,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:37:53,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-10-28 23:37:53,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:37:53,010 INFO L225 Difference]: With dead ends: 205 [2021-10-28 23:37:53,010 INFO L226 Difference]: Without dead ends: 205 [2021-10-28 23:37:53,011 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:37:53,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-10-28 23:37:53,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 159. [2021-10-28 23:37:53,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 155 states have (on average 1.8064516129032258) internal successors, (280), 155 states have internal predecessors, (280), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:53,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 283 transitions. [2021-10-28 23:37:53,046 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 283 transitions. Word has length 24 [2021-10-28 23:37:53,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:37:53,047 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 283 transitions. [2021-10-28 23:37:53,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:53,048 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 283 transitions. [2021-10-28 23:37:53,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 23:37:53,052 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:37:53,053 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:37:53,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:37:53,053 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:37:53,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:37:53,054 INFO L85 PathProgramCache]: Analyzing trace with hash -2007881935, now seen corresponding path program 1 times [2021-10-28 23:37:53,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:37:53,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881566300] [2021-10-28 23:37:53,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:37:53,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:37:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:53,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:37:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:53,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:37:53,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:37:53,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881566300] [2021-10-28 23:37:53,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881566300] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:37:53,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:37:53,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:37:53,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312807862] [2021-10-28 23:37:53,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:37:53,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:37:53,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:37:53,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:37:53,175 INFO L87 Difference]: Start difference. First operand 159 states and 283 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:53,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:37:53,373 INFO L93 Difference]: Finished difference Result 297 states and 534 transitions. [2021-10-28 23:37:53,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:37:53,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-10-28 23:37:53,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:37:53,380 INFO L225 Difference]: With dead ends: 297 [2021-10-28 23:37:53,381 INFO L226 Difference]: Without dead ends: 297 [2021-10-28 23:37:53,382 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:37:53,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-10-28 23:37:53,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 215. [2021-10-28 23:37:53,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 211 states have (on average 1.7914691943127963) internal successors, (378), 211 states have internal predecessors, (378), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:53,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 381 transitions. [2021-10-28 23:37:53,400 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 381 transitions. Word has length 25 [2021-10-28 23:37:53,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:37:53,401 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 381 transitions. [2021-10-28 23:37:53,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:53,402 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 381 transitions. [2021-10-28 23:37:53,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 23:37:53,408 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:37:53,409 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:37:53,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:37:53,409 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:37:53,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:37:53,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1007221683, now seen corresponding path program 1 times [2021-10-28 23:37:53,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:37:53,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019219265] [2021-10-28 23:37:53,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:37:53,412 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:37:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:53,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:37:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:53,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:37:53,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:37:53,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019219265] [2021-10-28 23:37:53,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019219265] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:37:53,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:37:53,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:37:53,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436117178] [2021-10-28 23:37:53,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:37:53,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:37:53,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:37:53,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:37:53,491 INFO L87 Difference]: Start difference. First operand 215 states and 381 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:53,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:37:53,664 INFO L93 Difference]: Finished difference Result 305 states and 536 transitions. [2021-10-28 23:37:53,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:37:53,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-10-28 23:37:53,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:37:53,668 INFO L225 Difference]: With dead ends: 305 [2021-10-28 23:37:53,669 INFO L226 Difference]: Without dead ends: 305 [2021-10-28 23:37:53,669 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:37:53,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-10-28 23:37:53,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 303. [2021-10-28 23:37:53,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 299 states have (on average 1.7792642140468227) internal successors, (532), 299 states have internal predecessors, (532), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:53,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 535 transitions. [2021-10-28 23:37:53,686 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 535 transitions. Word has length 25 [2021-10-28 23:37:53,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:37:53,687 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 535 transitions. [2021-10-28 23:37:53,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:53,687 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 535 transitions. [2021-10-28 23:37:53,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 23:37:53,689 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:37:53,689 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:37:53,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 23:37:53,690 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:37:53,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:37:53,691 INFO L85 PathProgramCache]: Analyzing trace with hash -2114584424, now seen corresponding path program 1 times [2021-10-28 23:37:53,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:37:53,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986485045] [2021-10-28 23:37:53,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:37:53,692 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:37:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:53,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:37:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:53,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:37:53,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:37:53,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986485045] [2021-10-28 23:37:53,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986485045] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:37:53,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:37:53,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:37:53,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004057848] [2021-10-28 23:37:53,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:37:53,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:37:53,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:37:53,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:37:53,754 INFO L87 Difference]: Start difference. First operand 303 states and 535 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:53,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:37:53,922 INFO L93 Difference]: Finished difference Result 311 states and 540 transitions. [2021-10-28 23:37:53,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:37:53,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-10-28 23:37:53,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:37:53,926 INFO L225 Difference]: With dead ends: 311 [2021-10-28 23:37:53,926 INFO L226 Difference]: Without dead ends: 311 [2021-10-28 23:37:53,927 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:37:53,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-10-28 23:37:53,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 309. [2021-10-28 23:37:53,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 305 states have (on average 1.7573770491803278) internal successors, (536), 305 states have internal predecessors, (536), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:53,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 539 transitions. [2021-10-28 23:37:53,941 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 539 transitions. Word has length 26 [2021-10-28 23:37:53,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:37:53,941 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 539 transitions. [2021-10-28 23:37:53,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:53,942 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 539 transitions. [2021-10-28 23:37:53,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 23:37:53,943 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:37:53,943 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:37:53,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 23:37:53,944 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:37:53,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:37:53,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1159314518, now seen corresponding path program 1 times [2021-10-28 23:37:53,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:37:53,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186601193] [2021-10-28 23:37:53,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:37:53,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:37:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:53,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:37:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:54,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:37:54,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:37:54,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186601193] [2021-10-28 23:37:54,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186601193] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:37:54,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:37:54,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:37:54,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162822799] [2021-10-28 23:37:54,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:37:54,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:37:54,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:37:54,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:37:54,006 INFO L87 Difference]: Start difference. First operand 309 states and 539 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:54,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:37:54,170 INFO L93 Difference]: Finished difference Result 571 states and 1004 transitions. [2021-10-28 23:37:54,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:37:54,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-10-28 23:37:54,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:37:54,176 INFO L225 Difference]: With dead ends: 571 [2021-10-28 23:37:54,176 INFO L226 Difference]: Without dead ends: 571 [2021-10-28 23:37:54,177 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:37:54,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-10-28 23:37:54,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 425. [2021-10-28 23:37:54,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 421 states have (on average 1.7292161520190024) internal successors, (728), 421 states have internal predecessors, (728), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:54,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 731 transitions. [2021-10-28 23:37:54,198 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 731 transitions. Word has length 26 [2021-10-28 23:37:54,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:37:54,199 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 731 transitions. [2021-10-28 23:37:54,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:54,200 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 731 transitions. [2021-10-28 23:37:54,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 23:37:54,201 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:37:54,201 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:37:54,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 23:37:54,202 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:37:54,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:37:54,203 INFO L85 PathProgramCache]: Analyzing trace with hash -120549160, now seen corresponding path program 1 times [2021-10-28 23:37:54,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:37:54,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452277071] [2021-10-28 23:37:54,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:37:54,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:37:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:54,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:37:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:54,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:37:54,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:37:54,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452277071] [2021-10-28 23:37:54,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452277071] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:37:54,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:37:54,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:37:54,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866123767] [2021-10-28 23:37:54,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:37:54,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:37:54,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:37:54,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:37:54,275 INFO L87 Difference]: Start difference. First operand 425 states and 731 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:54,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:37:54,441 INFO L93 Difference]: Finished difference Result 595 states and 1016 transitions. [2021-10-28 23:37:54,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:37:54,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-10-28 23:37:54,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:37:54,447 INFO L225 Difference]: With dead ends: 595 [2021-10-28 23:37:54,448 INFO L226 Difference]: Without dead ends: 595 [2021-10-28 23:37:54,448 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:37:54,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-10-28 23:37:54,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 593. [2021-10-28 23:37:54,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 589 states have (on average 1.7181663837011885) internal successors, (1012), 589 states have internal predecessors, (1012), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:54,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1015 transitions. [2021-10-28 23:37:54,474 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1015 transitions. Word has length 26 [2021-10-28 23:37:54,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:37:54,475 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 1015 transitions. [2021-10-28 23:37:54,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:54,475 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1015 transitions. [2021-10-28 23:37:54,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 23:37:54,478 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:37:54,478 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:37:54,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 23:37:54,479 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:37:54,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:37:54,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1579225448, now seen corresponding path program 1 times [2021-10-28 23:37:54,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:37:54,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538304142] [2021-10-28 23:37:54,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:37:54,481 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:37:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:54,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:37:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:54,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:37:54,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:37:54,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538304142] [2021-10-28 23:37:54,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538304142] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:37:54,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:37:54,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:37:54,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525598615] [2021-10-28 23:37:54,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:37:54,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:37:54,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:37:54,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:37:54,562 INFO L87 Difference]: Start difference. First operand 593 states and 1015 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:54,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:37:54,734 INFO L93 Difference]: Finished difference Result 603 states and 1016 transitions. [2021-10-28 23:37:54,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:37:54,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-10-28 23:37:54,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:37:54,740 INFO L225 Difference]: With dead ends: 603 [2021-10-28 23:37:54,740 INFO L226 Difference]: Without dead ends: 603 [2021-10-28 23:37:54,740 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:37:54,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-10-28 23:37:54,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 601. [2021-10-28 23:37:54,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 597 states have (on average 1.695142378559464) internal successors, (1012), 597 states have internal predecessors, (1012), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:54,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 1015 transitions. [2021-10-28 23:37:54,766 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 1015 transitions. Word has length 27 [2021-10-28 23:37:54,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:37:54,767 INFO L470 AbstractCegarLoop]: Abstraction has 601 states and 1015 transitions. [2021-10-28 23:37:54,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:54,767 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 1015 transitions. [2021-10-28 23:37:54,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 23:37:54,769 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:37:54,769 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:37:54,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 23:37:54,770 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:37:54,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:37:54,771 INFO L85 PathProgramCache]: Analyzing trace with hash 558157094, now seen corresponding path program 1 times [2021-10-28 23:37:54,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:37:54,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21779731] [2021-10-28 23:37:54,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:37:54,772 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:37:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:54,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:37:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:54,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:37:54,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:37:54,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21779731] [2021-10-28 23:37:54,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21779731] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:37:54,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:37:54,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:37:54,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337594698] [2021-10-28 23:37:54,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:37:54,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:37:54,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:37:54,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:37:54,838 INFO L87 Difference]: Start difference. First operand 601 states and 1015 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:55,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:37:55,003 INFO L93 Difference]: Finished difference Result 1099 states and 1872 transitions. [2021-10-28 23:37:55,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:37:55,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-10-28 23:37:55,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:37:55,013 INFO L225 Difference]: With dead ends: 1099 [2021-10-28 23:37:55,014 INFO L226 Difference]: Without dead ends: 1099 [2021-10-28 23:37:55,014 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:37:55,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2021-10-28 23:37:55,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 841. [2021-10-28 23:37:55,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 837 states have (on average 1.6583034647550776) internal successors, (1388), 837 states have internal predecessors, (1388), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:55,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1391 transitions. [2021-10-28 23:37:55,049 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1391 transitions. Word has length 27 [2021-10-28 23:37:55,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:37:55,050 INFO L470 AbstractCegarLoop]: Abstraction has 841 states and 1391 transitions. [2021-10-28 23:37:55,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:55,050 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1391 transitions. [2021-10-28 23:37:55,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 23:37:55,052 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:37:55,053 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:37:55,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 23:37:55,053 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:37:55,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:37:55,054 INFO L85 PathProgramCache]: Analyzing trace with hash -721706584, now seen corresponding path program 1 times [2021-10-28 23:37:55,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:37:55,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510485959] [2021-10-28 23:37:55,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:37:55,055 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:37:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:55,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:37:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:55,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:37:55,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:37:55,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510485959] [2021-10-28 23:37:55,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510485959] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:37:55,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:37:55,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:37:55,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631621776] [2021-10-28 23:37:55,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:37:55,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:37:55,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:37:55,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:37:55,117 INFO L87 Difference]: Start difference. First operand 841 states and 1391 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:55,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:37:55,285 INFO L93 Difference]: Finished difference Result 1163 states and 1912 transitions. [2021-10-28 23:37:55,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:37:55,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-10-28 23:37:55,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:37:55,295 INFO L225 Difference]: With dead ends: 1163 [2021-10-28 23:37:55,295 INFO L226 Difference]: Without dead ends: 1163 [2021-10-28 23:37:55,296 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:37:55,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2021-10-28 23:37:55,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1161. [2021-10-28 23:37:55,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1161 states, 1157 states have (on average 1.6490924805531546) internal successors, (1908), 1157 states have internal predecessors, (1908), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:55,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 1911 transitions. [2021-10-28 23:37:55,339 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 1911 transitions. Word has length 27 [2021-10-28 23:37:55,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:37:55,342 INFO L470 AbstractCegarLoop]: Abstraction has 1161 states and 1911 transitions. [2021-10-28 23:37:55,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:55,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 1911 transitions. [2021-10-28 23:37:55,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 23:37:55,345 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:37:55,345 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:37:55,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-28 23:37:55,346 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:37:55,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:37:55,346 INFO L85 PathProgramCache]: Analyzing trace with hash 123214829, now seen corresponding path program 1 times [2021-10-28 23:37:55,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:37:55,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109967054] [2021-10-28 23:37:55,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:37:55,347 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:37:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:55,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:37:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:55,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:37:55,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:37:55,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109967054] [2021-10-28 23:37:55,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109967054] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:37:55,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:37:55,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:37:55,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2367379] [2021-10-28 23:37:55,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:37:55,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:37:55,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:37:55,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:37:55,411 INFO L87 Difference]: Start difference. First operand 1161 states and 1911 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:55,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:37:55,585 INFO L93 Difference]: Finished difference Result 1179 states and 1912 transitions. [2021-10-28 23:37:55,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:37:55,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-10-28 23:37:55,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:37:55,595 INFO L225 Difference]: With dead ends: 1179 [2021-10-28 23:37:55,595 INFO L226 Difference]: Without dead ends: 1179 [2021-10-28 23:37:55,596 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:37:55,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2021-10-28 23:37:55,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1177. [2021-10-28 23:37:55,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1173 states have (on average 1.6265984654731458) internal successors, (1908), 1173 states have internal predecessors, (1908), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:55,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1911 transitions. [2021-10-28 23:37:55,640 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1911 transitions. Word has length 28 [2021-10-28 23:37:55,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:37:55,641 INFO L470 AbstractCegarLoop]: Abstraction has 1177 states and 1911 transitions. [2021-10-28 23:37:55,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:55,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1911 transitions. [2021-10-28 23:37:55,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 23:37:55,643 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:37:55,643 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:37:55,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-28 23:37:55,644 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:37:55,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:37:55,645 INFO L85 PathProgramCache]: Analyzing trace with hash -897853525, now seen corresponding path program 1 times [2021-10-28 23:37:55,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:37:55,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51587413] [2021-10-28 23:37:55,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:37:55,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:37:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:55,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:37:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:55,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:37:55,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:37:55,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51587413] [2021-10-28 23:37:55,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51587413] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:37:55,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:37:55,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:37:55,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411841275] [2021-10-28 23:37:55,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:37:55,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:37:55,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:37:55,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:37:55,727 INFO L87 Difference]: Start difference. First operand 1177 states and 1911 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:55,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:37:55,913 INFO L93 Difference]: Finished difference Result 2123 states and 3480 transitions. [2021-10-28 23:37:55,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:37:55,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-10-28 23:37:55,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:37:55,929 INFO L225 Difference]: With dead ends: 2123 [2021-10-28 23:37:55,929 INFO L226 Difference]: Without dead ends: 2123 [2021-10-28 23:37:55,930 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:37:55,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2021-10-28 23:37:55,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 1673. [2021-10-28 23:37:55,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1669 states have (on average 1.5841821449970042) internal successors, (2644), 1669 states have internal predecessors, (2644), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:56,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 2647 transitions. [2021-10-28 23:37:56,030 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 2647 transitions. Word has length 28 [2021-10-28 23:37:56,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:37:56,030 INFO L470 AbstractCegarLoop]: Abstraction has 1673 states and 2647 transitions. [2021-10-28 23:37:56,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:56,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 2647 transitions. [2021-10-28 23:37:56,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 23:37:56,034 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:37:56,034 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:37:56,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-28 23:37:56,035 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:37:56,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:37:56,036 INFO L85 PathProgramCache]: Analyzing trace with hash 2117250093, now seen corresponding path program 1 times [2021-10-28 23:37:56,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:37:56,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853656899] [2021-10-28 23:37:56,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:37:56,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:37:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:56,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:37:56,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:56,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:37:56,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:37:56,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853656899] [2021-10-28 23:37:56,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853656899] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:37:56,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:37:56,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:37:56,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005633342] [2021-10-28 23:37:56,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:37:56,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:37:56,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:37:56,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:37:56,111 INFO L87 Difference]: Start difference. First operand 1673 states and 2647 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:56,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:37:56,276 INFO L93 Difference]: Finished difference Result 2283 states and 3592 transitions. [2021-10-28 23:37:56,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:37:56,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-10-28 23:37:56,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:37:56,293 INFO L225 Difference]: With dead ends: 2283 [2021-10-28 23:37:56,293 INFO L226 Difference]: Without dead ends: 2283 [2021-10-28 23:37:56,293 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:37:56,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2283 states. [2021-10-28 23:37:56,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2283 to 2281. [2021-10-28 23:37:56,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2281 states, 2277 states have (on average 1.5757575757575757) internal successors, (3588), 2277 states have internal predecessors, (3588), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:56,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 3591 transitions. [2021-10-28 23:37:56,384 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 3591 transitions. Word has length 28 [2021-10-28 23:37:56,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:37:56,385 INFO L470 AbstractCegarLoop]: Abstraction has 2281 states and 3591 transitions. [2021-10-28 23:37:56,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:56,385 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 3591 transitions. [2021-10-28 23:37:56,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 23:37:56,389 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:37:56,389 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:37:56,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-28 23:37:56,390 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:37:56,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:37:56,391 INFO L85 PathProgramCache]: Analyzing trace with hash -2063441059, now seen corresponding path program 1 times [2021-10-28 23:37:56,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:37:56,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749301702] [2021-10-28 23:37:56,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:37:56,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:37:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:56,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:37:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:56,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:37:56,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:37:56,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749301702] [2021-10-28 23:37:56,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749301702] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:37:56,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:37:56,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:37:56,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948967619] [2021-10-28 23:37:56,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:37:56,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:37:56,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:37:56,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:37:56,450 INFO L87 Difference]: Start difference. First operand 2281 states and 3591 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:56,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:37:56,611 INFO L93 Difference]: Finished difference Result 2315 states and 3592 transitions. [2021-10-28 23:37:56,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:37:56,612 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-10-28 23:37:56,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:37:56,627 INFO L225 Difference]: With dead ends: 2315 [2021-10-28 23:37:56,627 INFO L226 Difference]: Without dead ends: 2315 [2021-10-28 23:37:56,628 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:37:56,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2021-10-28 23:37:56,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 2313. [2021-10-28 23:37:56,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2313 states, 2309 states have (on average 1.5539194456474665) internal successors, (3588), 2309 states have internal predecessors, (3588), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:56,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 3591 transitions. [2021-10-28 23:37:56,745 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 3591 transitions. Word has length 29 [2021-10-28 23:37:56,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:37:56,746 INFO L470 AbstractCegarLoop]: Abstraction has 2313 states and 3591 transitions. [2021-10-28 23:37:56,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:56,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 3591 transitions. [2021-10-28 23:37:56,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 23:37:56,750 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:37:56,751 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:37:56,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-28 23:37:56,751 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:37:56,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:37:56,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1210457883, now seen corresponding path program 1 times [2021-10-28 23:37:56,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:37:56,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50893392] [2021-10-28 23:37:56,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:37:56,753 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:37:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:56,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:37:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:56,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:37:56,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:37:56,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50893392] [2021-10-28 23:37:56,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50893392] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:37:56,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:37:56,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:37:56,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920517079] [2021-10-28 23:37:56,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:37:56,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:37:56,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:37:56,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:37:56,811 INFO L87 Difference]: Start difference. First operand 2313 states and 3591 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:56,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:37:56,998 INFO L93 Difference]: Finished difference Result 4107 states and 6440 transitions. [2021-10-28 23:37:56,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:37:56,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-10-28 23:37:56,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:37:57,027 INFO L225 Difference]: With dead ends: 4107 [2021-10-28 23:37:57,028 INFO L226 Difference]: Without dead ends: 4107 [2021-10-28 23:37:57,028 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:37:57,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4107 states. [2021-10-28 23:37:57,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4107 to 3337. [2021-10-28 23:37:57,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3337 states, 3333 states have (on average 1.5085508550855085) internal successors, (5028), 3333 states have internal predecessors, (5028), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:57,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3337 states to 3337 states and 5031 transitions. [2021-10-28 23:37:57,151 INFO L78 Accepts]: Start accepts. Automaton has 3337 states and 5031 transitions. Word has length 29 [2021-10-28 23:37:57,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:37:57,151 INFO L470 AbstractCegarLoop]: Abstraction has 3337 states and 5031 transitions. [2021-10-28 23:37:57,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:57,152 INFO L276 IsEmpty]: Start isEmpty. Operand 3337 states and 5031 transitions. [2021-10-28 23:37:57,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 23:37:57,158 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:37:57,158 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:37:57,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-28 23:37:57,158 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:37:57,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:37:57,159 INFO L85 PathProgramCache]: Analyzing trace with hash -69405795, now seen corresponding path program 1 times [2021-10-28 23:37:57,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:37:57,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506130867] [2021-10-28 23:37:57,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:37:57,160 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:37:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:57,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:37:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:57,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:37:57,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:37:57,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506130867] [2021-10-28 23:37:57,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506130867] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:37:57,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:37:57,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:37:57,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355549569] [2021-10-28 23:37:57,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:37:57,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:37:57,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:37:57,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:37:57,218 INFO L87 Difference]: Start difference. First operand 3337 states and 5031 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:57,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:37:57,386 INFO L93 Difference]: Finished difference Result 4491 states and 6728 transitions. [2021-10-28 23:37:57,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:37:57,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-10-28 23:37:57,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:37:57,416 INFO L225 Difference]: With dead ends: 4491 [2021-10-28 23:37:57,416 INFO L226 Difference]: Without dead ends: 4491 [2021-10-28 23:37:57,416 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:37:57,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4491 states. [2021-10-28 23:37:57,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4491 to 4489. [2021-10-28 23:37:57,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4489 states, 4485 states have (on average 1.4992196209587514) internal successors, (6724), 4485 states have internal predecessors, (6724), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:57,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4489 states to 4489 states and 6727 transitions. [2021-10-28 23:37:57,583 INFO L78 Accepts]: Start accepts. Automaton has 4489 states and 6727 transitions. Word has length 29 [2021-10-28 23:37:57,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:37:57,584 INFO L470 AbstractCegarLoop]: Abstraction has 4489 states and 6727 transitions. [2021-10-28 23:37:57,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:57,584 INFO L276 IsEmpty]: Start isEmpty. Operand 4489 states and 6727 transitions. [2021-10-28 23:37:57,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 23:37:57,592 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:37:57,592 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:37:57,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-28 23:37:57,592 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:37:57,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:37:57,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1130296510, now seen corresponding path program 1 times [2021-10-28 23:37:57,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:37:57,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981778356] [2021-10-28 23:37:57,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:37:57,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:37:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:57,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:37:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:37:57,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:37:57,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981778356] [2021-10-28 23:37:57,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981778356] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:37:57,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:37:57,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:37:57,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108042946] [2021-10-28 23:37:57,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:37:57,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:37:57,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:37:57,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:37:57,648 INFO L87 Difference]: Start difference. First operand 4489 states and 6727 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:57,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:37:57,807 INFO L93 Difference]: Finished difference Result 4555 states and 6728 transitions. [2021-10-28 23:37:57,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:37:57,807 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-10-28 23:37:57,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:37:57,852 INFO L225 Difference]: With dead ends: 4555 [2021-10-28 23:37:57,861 INFO L226 Difference]: Without dead ends: 4555 [2021-10-28 23:37:57,862 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:37:57,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4555 states. [2021-10-28 23:37:57,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4555 to 4553. [2021-10-28 23:37:57,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4553 states, 4549 states have (on average 1.478127060892504) internal successors, (6724), 4549 states have internal predecessors, (6724), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:57,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4553 states to 4553 states and 6727 transitions. [2021-10-28 23:37:57,991 INFO L78 Accepts]: Start accepts. Automaton has 4553 states and 6727 transitions. Word has length 30 [2021-10-28 23:37:57,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:37:57,991 INFO L470 AbstractCegarLoop]: Abstraction has 4553 states and 6727 transitions. [2021-10-28 23:37:57,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:57,993 INFO L276 IsEmpty]: Start isEmpty. Operand 4553 states and 6727 transitions. [2021-10-28 23:37:58,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 23:37:58,001 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:37:58,001 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:37:58,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-28 23:37:58,001 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:37:58,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:37:58,002 INFO L85 PathProgramCache]: Analyzing trace with hash 2143602432, now seen corresponding path program 1 times [2021-10-28 23:37:58,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:37:58,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244935263] [2021-10-28 23:37:58,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:37:58,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:37:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:58,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:37:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:58,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:37:58,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:37:58,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244935263] [2021-10-28 23:37:58,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244935263] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:37:58,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:37:58,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:37:58,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120216419] [2021-10-28 23:37:58,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:37:58,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:37:58,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:37:58,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:37:58,067 INFO L87 Difference]: Start difference. First operand 4553 states and 6727 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:58,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:37:58,270 INFO L93 Difference]: Finished difference Result 7947 states and 11848 transitions. [2021-10-28 23:37:58,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:37:58,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-10-28 23:37:58,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:37:58,290 INFO L225 Difference]: With dead ends: 7947 [2021-10-28 23:37:58,291 INFO L226 Difference]: Without dead ends: 7947 [2021-10-28 23:37:58,291 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:37:58,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7947 states. [2021-10-28 23:37:58,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7947 to 6665. [2021-10-28 23:37:58,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6665 states, 6661 states have (on average 1.4322173847770605) internal successors, (9540), 6661 states have internal predecessors, (9540), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:58,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6665 states to 6665 states and 9543 transitions. [2021-10-28 23:37:58,445 INFO L78 Accepts]: Start accepts. Automaton has 6665 states and 9543 transitions. Word has length 30 [2021-10-28 23:37:58,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:37:58,445 INFO L470 AbstractCegarLoop]: Abstraction has 6665 states and 9543 transitions. [2021-10-28 23:37:58,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:58,446 INFO L276 IsEmpty]: Start isEmpty. Operand 6665 states and 9543 transitions. [2021-10-28 23:37:58,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 23:37:58,458 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:37:58,458 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:37:58,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-28 23:37:58,459 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:37:58,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:37:58,460 INFO L85 PathProgramCache]: Analyzing trace with hash 863738754, now seen corresponding path program 1 times [2021-10-28 23:37:58,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:37:58,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282883418] [2021-10-28 23:37:58,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:37:58,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:37:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:58,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:37:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:58,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:37:58,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:37:58,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282883418] [2021-10-28 23:37:58,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282883418] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:37:58,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:37:58,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:37:58,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994085791] [2021-10-28 23:37:58,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:37:58,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:37:58,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:37:58,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:37:58,515 INFO L87 Difference]: Start difference. First operand 6665 states and 9543 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:58,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:37:58,708 INFO L93 Difference]: Finished difference Result 8843 states and 12552 transitions. [2021-10-28 23:37:58,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:37:58,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-10-28 23:37:58,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:37:58,761 INFO L225 Difference]: With dead ends: 8843 [2021-10-28 23:37:58,761 INFO L226 Difference]: Without dead ends: 8843 [2021-10-28 23:37:58,761 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:37:58,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8843 states. [2021-10-28 23:37:58,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8843 to 8841. [2021-10-28 23:37:58,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8841 states, 8837 states have (on average 1.419938893289578) internal successors, (12548), 8837 states have internal predecessors, (12548), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:58,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 12551 transitions. [2021-10-28 23:37:58,943 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 12551 transitions. Word has length 30 [2021-10-28 23:37:58,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:37:58,943 INFO L470 AbstractCegarLoop]: Abstraction has 8841 states and 12551 transitions. [2021-10-28 23:37:58,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:58,944 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 12551 transitions. [2021-10-28 23:37:58,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-28 23:37:58,957 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:37:58,957 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:37:58,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-28 23:37:58,958 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:37:58,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:37:58,960 INFO L85 PathProgramCache]: Analyzing trace with hash 2027381074, now seen corresponding path program 1 times [2021-10-28 23:37:58,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:37:58,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674365877] [2021-10-28 23:37:58,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:37:58,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:37:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:59,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:37:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:59,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:37:59,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:37:59,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674365877] [2021-10-28 23:37:59,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674365877] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:37:59,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:37:59,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:37:59,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136028813] [2021-10-28 23:37:59,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:37:59,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:37:59,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:37:59,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:37:59,025 INFO L87 Difference]: Start difference. First operand 8841 states and 12551 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:59,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:37:59,275 INFO L93 Difference]: Finished difference Result 8971 states and 12552 transitions. [2021-10-28 23:37:59,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:37:59,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-10-28 23:37:59,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:37:59,298 INFO L225 Difference]: With dead ends: 8971 [2021-10-28 23:37:59,298 INFO L226 Difference]: Without dead ends: 8971 [2021-10-28 23:37:59,299 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:37:59,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8971 states. [2021-10-28 23:37:59,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8971 to 8969. [2021-10-28 23:37:59,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8969 states, 8965 states have (on average 1.399665365309537) internal successors, (12548), 8965 states have internal predecessors, (12548), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:59,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8969 states to 8969 states and 12551 transitions. [2021-10-28 23:37:59,513 INFO L78 Accepts]: Start accepts. Automaton has 8969 states and 12551 transitions. Word has length 31 [2021-10-28 23:37:59,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:37:59,514 INFO L470 AbstractCegarLoop]: Abstraction has 8969 states and 12551 transitions. [2021-10-28 23:37:59,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:59,514 INFO L276 IsEmpty]: Start isEmpty. Operand 8969 states and 12551 transitions. [2021-10-28 23:37:59,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-28 23:37:59,527 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:37:59,527 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:37:59,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-28 23:37:59,527 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:37:59,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:37:59,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1006312720, now seen corresponding path program 1 times [2021-10-28 23:37:59,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:37:59,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24151305] [2021-10-28 23:37:59,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:37:59,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:37:59,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:59,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:37:59,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:37:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:37:59,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:37:59,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24151305] [2021-10-28 23:37:59,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24151305] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:37:59,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:37:59,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:37:59,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367778993] [2021-10-28 23:37:59,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:37:59,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:37:59,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:37:59,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:37:59,587 INFO L87 Difference]: Start difference. First operand 8969 states and 12551 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:37:59,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:37:59,800 INFO L93 Difference]: Finished difference Result 15371 states and 21640 transitions. [2021-10-28 23:37:59,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:37:59,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-10-28 23:37:59,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:37:59,835 INFO L225 Difference]: With dead ends: 15371 [2021-10-28 23:37:59,836 INFO L226 Difference]: Without dead ends: 15371 [2021-10-28 23:37:59,836 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:37:59,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15371 states. [2021-10-28 23:38:00,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15371 to 13321. [2021-10-28 23:38:00,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13321 states, 13317 states have (on average 1.355560561688068) internal successors, (18052), 13317 states have internal predecessors, (18052), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:38:00,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13321 states to 13321 states and 18055 transitions. [2021-10-28 23:38:00,187 INFO L78 Accepts]: Start accepts. Automaton has 13321 states and 18055 transitions. Word has length 31 [2021-10-28 23:38:00,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:38:00,187 INFO L470 AbstractCegarLoop]: Abstraction has 13321 states and 18055 transitions. [2021-10-28 23:38:00,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:38:00,188 INFO L276 IsEmpty]: Start isEmpty. Operand 13321 states and 18055 transitions. [2021-10-28 23:38:00,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-28 23:38:00,279 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:38:00,279 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:38:00,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-28 23:38:00,279 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:38:00,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:38:00,280 INFO L85 PathProgramCache]: Analyzing trace with hash -273550958, now seen corresponding path program 1 times [2021-10-28 23:38:00,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:38:00,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066689272] [2021-10-28 23:38:00,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:38:00,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:38:00,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:38:00,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:38:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:38:00,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:38:00,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:38:00,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066689272] [2021-10-28 23:38:00,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066689272] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:38:00,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:38:00,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:38:00,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191930966] [2021-10-28 23:38:00,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:38:00,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:38:00,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:38:00,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:38:00,369 INFO L87 Difference]: Start difference. First operand 13321 states and 18055 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:38:00,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:38:00,594 INFO L93 Difference]: Finished difference Result 17419 states and 23304 transitions. [2021-10-28 23:38:00,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:38:00,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-10-28 23:38:00,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:38:00,636 INFO L225 Difference]: With dead ends: 17419 [2021-10-28 23:38:00,636 INFO L226 Difference]: Without dead ends: 17419 [2021-10-28 23:38:00,636 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:38:00,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17419 states. [2021-10-28 23:38:00,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17419 to 17417. [2021-10-28 23:38:00,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17417 states, 17413 states have (on average 1.3380807442715212) internal successors, (23300), 17413 states have internal predecessors, (23300), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:38:01,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17417 states to 17417 states and 23303 transitions. [2021-10-28 23:38:01,143 INFO L78 Accepts]: Start accepts. Automaton has 17417 states and 23303 transitions. Word has length 31 [2021-10-28 23:38:01,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:38:01,144 INFO L470 AbstractCegarLoop]: Abstraction has 17417 states and 23303 transitions. [2021-10-28 23:38:01,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:38:01,145 INFO L276 IsEmpty]: Start isEmpty. Operand 17417 states and 23303 transitions. [2021-10-28 23:38:01,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 23:38:01,174 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:38:01,174 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:38:01,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-28 23:38:01,175 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:38:01,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:38:01,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1131138711, now seen corresponding path program 1 times [2021-10-28 23:38:01,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:38:01,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266189883] [2021-10-28 23:38:01,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:38:01,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:38:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:38:01,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:38:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:38:01,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:38:01,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:38:01,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266189883] [2021-10-28 23:38:01,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266189883] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:38:01,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:38:01,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:38:01,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534937022] [2021-10-28 23:38:01,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:38:01,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:38:01,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:38:01,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:38:01,242 INFO L87 Difference]: Start difference. First operand 17417 states and 23303 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:38:01,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:38:01,529 INFO L93 Difference]: Finished difference Result 17675 states and 23304 transitions. [2021-10-28 23:38:01,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:38:01,530 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-10-28 23:38:01,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:38:01,568 INFO L225 Difference]: With dead ends: 17675 [2021-10-28 23:38:01,568 INFO L226 Difference]: Without dead ends: 17675 [2021-10-28 23:38:01,569 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:38:01,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17675 states. [2021-10-28 23:38:01,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17675 to 17673. [2021-10-28 23:38:01,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17673 states, 17669 states have (on average 1.3186937574282642) internal successors, (23300), 17669 states have internal predecessors, (23300), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:38:01,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17673 states to 17673 states and 23303 transitions. [2021-10-28 23:38:01,987 INFO L78 Accepts]: Start accepts. Automaton has 17673 states and 23303 transitions. Word has length 32 [2021-10-28 23:38:01,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:38:01,987 INFO L470 AbstractCegarLoop]: Abstraction has 17673 states and 23303 transitions. [2021-10-28 23:38:01,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:38:01,988 INFO L276 IsEmpty]: Start isEmpty. Operand 17673 states and 23303 transitions. [2021-10-28 23:38:02,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 23:38:02,008 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:38:02,009 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:38:02,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-10-28 23:38:02,009 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:38:02,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:38:02,010 INFO L85 PathProgramCache]: Analyzing trace with hash 110070357, now seen corresponding path program 1 times [2021-10-28 23:38:02,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:38:02,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530902136] [2021-10-28 23:38:02,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:38:02,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:38:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:38:02,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:38:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:38:02,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:38:02,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:38:02,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530902136] [2021-10-28 23:38:02,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530902136] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:38:02,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:38:02,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:38:02,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991544329] [2021-10-28 23:38:02,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:38:02,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:38:02,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:38:02,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:38:02,072 INFO L87 Difference]: Start difference. First operand 17673 states and 23303 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:38:02,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:38:02,501 INFO L93 Difference]: Finished difference Result 34315 states and 43528 transitions. [2021-10-28 23:38:02,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:38:02,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-10-28 23:38:02,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:38:02,572 INFO L225 Difference]: With dead ends: 34315 [2021-10-28 23:38:02,572 INFO L226 Difference]: Without dead ends: 34315 [2021-10-28 23:38:02,573 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:38:02,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34315 states. [2021-10-28 23:38:03,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34315 to 34313. [2021-10-28 23:38:03,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34313 states, 34309 states have (on average 1.2685884170334314) internal successors, (43524), 34309 states have internal predecessors, (43524), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:38:03,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34313 states to 34313 states and 43527 transitions. [2021-10-28 23:38:03,465 INFO L78 Accepts]: Start accepts. Automaton has 34313 states and 43527 transitions. Word has length 32 [2021-10-28 23:38:03,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:38:03,466 INFO L470 AbstractCegarLoop]: Abstraction has 34313 states and 43527 transitions. [2021-10-28 23:38:03,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:38:03,466 INFO L276 IsEmpty]: Start isEmpty. Operand 34313 states and 43527 transitions. [2021-10-28 23:38:03,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 23:38:03,505 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:38:03,505 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:38:03,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-10-28 23:38:03,506 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:38:03,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:38:03,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1389934035, now seen corresponding path program 1 times [2021-10-28 23:38:03,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:38:03,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049044113] [2021-10-28 23:38:03,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:38:03,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:38:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:38:03,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:38:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:38:03,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:38:03,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:38:03,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049044113] [2021-10-28 23:38:03,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049044113] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:38:03,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:38:03,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:38:03,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643280874] [2021-10-28 23:38:03,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:38:03,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:38:03,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:38:03,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:38:03,722 INFO L87 Difference]: Start difference. First operand 34313 states and 43527 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:38:03,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:38:03,983 INFO L93 Difference]: Finished difference Result 37387 states and 48136 transitions. [2021-10-28 23:38:03,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:38:03,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-10-28 23:38:03,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:38:04,059 INFO L225 Difference]: With dead ends: 37387 [2021-10-28 23:38:04,060 INFO L226 Difference]: Without dead ends: 37387 [2021-10-28 23:38:04,061 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:38:04,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37387 states. [2021-10-28 23:38:04,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37387 to 34313. [2021-10-28 23:38:04,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34313 states, 34309 states have (on average 1.2536652190387363) internal successors, (43012), 34309 states have internal predecessors, (43012), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:38:04,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34313 states to 34313 states and 43015 transitions. [2021-10-28 23:38:04,805 INFO L78 Accepts]: Start accepts. Automaton has 34313 states and 43015 transitions. Word has length 32 [2021-10-28 23:38:04,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:38:04,806 INFO L470 AbstractCegarLoop]: Abstraction has 34313 states and 43015 transitions. [2021-10-28 23:38:04,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:38:04,806 INFO L276 IsEmpty]: Start isEmpty. Operand 34313 states and 43015 transitions. [2021-10-28 23:38:05,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 23:38:05,015 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:38:05,015 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:38:05,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-10-28 23:38:05,016 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:38:05,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:38:05,016 INFO L85 PathProgramCache]: Analyzing trace with hash -882570425, now seen corresponding path program 1 times [2021-10-28 23:38:05,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:38:05,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444346211] [2021-10-28 23:38:05,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:38:05,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:38:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:38:05,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:38:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:38:05,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:38:05,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:38:05,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444346211] [2021-10-28 23:38:05,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444346211] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:38:05,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:38:05,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:38:05,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108787058] [2021-10-28 23:38:05,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:38:05,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:38:05,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:38:05,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:38:05,081 INFO L87 Difference]: Start difference. First operand 34313 states and 43015 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:38:05,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:38:05,393 INFO L93 Difference]: Finished difference Result 56843 states and 70664 transitions. [2021-10-28 23:38:05,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:38:05,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-10-28 23:38:05,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:38:05,652 INFO L225 Difference]: With dead ends: 56843 [2021-10-28 23:38:05,665 INFO L226 Difference]: Without dead ends: 56843 [2021-10-28 23:38:05,666 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:38:05,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56843 states. [2021-10-28 23:38:06,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56843 to 52745. [2021-10-28 23:38:06,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52745 states, 52741 states have (on average 1.2232608407121595) internal successors, (64516), 52741 states have internal predecessors, (64516), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:38:06,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52745 states to 52745 states and 64519 transitions. [2021-10-28 23:38:06,658 INFO L78 Accepts]: Start accepts. Automaton has 52745 states and 64519 transitions. Word has length 33 [2021-10-28 23:38:06,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:38:06,658 INFO L470 AbstractCegarLoop]: Abstraction has 52745 states and 64519 transitions. [2021-10-28 23:38:06,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:38:06,659 INFO L276 IsEmpty]: Start isEmpty. Operand 52745 states and 64519 transitions. [2021-10-28 23:38:06,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 23:38:06,717 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:38:06,717 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:38:06,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-10-28 23:38:06,718 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:38:06,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:38:06,719 INFO L85 PathProgramCache]: Analyzing trace with hash 2132533193, now seen corresponding path program 1 times [2021-10-28 23:38:06,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:38:06,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752162525] [2021-10-28 23:38:06,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:38:06,720 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:38:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:38:06,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:38:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:38:06,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:38:06,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:38:06,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752162525] [2021-10-28 23:38:06,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752162525] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:38:06,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:38:06,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:38:06,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287270796] [2021-10-28 23:38:06,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:38:06,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:38:06,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:38:06,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:38:06,780 INFO L87 Difference]: Start difference. First operand 52745 states and 64519 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:38:07,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:38:07,403 INFO L93 Difference]: Finished difference Result 67083 states and 79880 transitions. [2021-10-28 23:38:07,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:38:07,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-10-28 23:38:07,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:38:07,476 INFO L225 Difference]: With dead ends: 67083 [2021-10-28 23:38:07,477 INFO L226 Difference]: Without dead ends: 67083 [2021-10-28 23:38:07,477 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:38:07,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67083 states. [2021-10-28 23:38:08,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67083 to 67081. [2021-10-28 23:38:08,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67081 states, 67077 states have (on average 1.1908105609970632) internal successors, (79876), 67077 states have internal predecessors, (79876), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:38:08,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67081 states to 67081 states and 79879 transitions. [2021-10-28 23:38:08,431 INFO L78 Accepts]: Start accepts. Automaton has 67081 states and 79879 transitions. Word has length 33 [2021-10-28 23:38:08,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:38:08,432 INFO L470 AbstractCegarLoop]: Abstraction has 67081 states and 79879 transitions. [2021-10-28 23:38:08,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:38:08,432 INFO L276 IsEmpty]: Start isEmpty. Operand 67081 states and 79879 transitions. [2021-10-28 23:38:08,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 23:38:08,484 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:38:08,485 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:38:08,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-10-28 23:38:08,485 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:38:08,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:38:08,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1589663254, now seen corresponding path program 1 times [2021-10-28 23:38:08,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:38:08,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274178338] [2021-10-28 23:38:08,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:38:08,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:38:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:38:08,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:38:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:38:08,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:38:08,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:38:08,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274178338] [2021-10-28 23:38:08,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274178338] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:38:08,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:38:08,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:38:08,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931555039] [2021-10-28 23:38:08,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:38:08,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:38:08,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:38:08,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:38:08,539 INFO L87 Difference]: Start difference. First operand 67081 states and 79879 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:38:09,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:38:09,262 INFO L93 Difference]: Finished difference Result 68619 states and 80904 transitions. [2021-10-28 23:38:09,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:38:09,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2021-10-28 23:38:09,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:38:09,458 INFO L225 Difference]: With dead ends: 68619 [2021-10-28 23:38:09,459 INFO L226 Difference]: Without dead ends: 68619 [2021-10-28 23:38:09,462 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:38:09,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68619 states. [2021-10-28 23:38:10,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68619 to 68617. [2021-10-28 23:38:10,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68617 states, 68613 states have (on average 1.1790768513255505) internal successors, (80900), 68613 states have internal predecessors, (80900), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:38:10,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68617 states to 68617 states and 80903 transitions. [2021-10-28 23:38:10,609 INFO L78 Accepts]: Start accepts. Automaton has 68617 states and 80903 transitions. Word has length 34 [2021-10-28 23:38:10,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:38:10,609 INFO L470 AbstractCegarLoop]: Abstraction has 68617 states and 80903 transitions. [2021-10-28 23:38:10,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:38:10,610 INFO L276 IsEmpty]: Start isEmpty. Operand 68617 states and 80903 transitions. [2021-10-28 23:38:10,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 23:38:10,658 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:38:10,658 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:38:10,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-10-28 23:38:10,658 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:38:10,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:38:10,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1684235688, now seen corresponding path program 1 times [2021-10-28 23:38:10,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:38:10,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198558756] [2021-10-28 23:38:10,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:38:10,660 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:38:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:38:10,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:38:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:38:10,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:38:10,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:38:10,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198558756] [2021-10-28 23:38:10,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198558756] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:38:10,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:38:10,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:38:10,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486630886] [2021-10-28 23:38:10,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:38:10,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:38:10,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:38:10,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:38:10,716 INFO L87 Difference]: Start difference. First operand 68617 states and 80903 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:38:11,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:38:11,230 INFO L93 Difference]: Finished difference Result 110601 states and 126983 transitions. [2021-10-28 23:38:11,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:38:11,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2021-10-28 23:38:11,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:38:11,380 INFO L225 Difference]: With dead ends: 110601 [2021-10-28 23:38:11,380 INFO L226 Difference]: Without dead ends: 110601 [2021-10-28 23:38:11,381 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:38:11,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110601 states. [2021-10-28 23:38:13,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110601 to 106505. [2021-10-28 23:38:13,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106505 states, 106501 states have (on average 1.1538295415066526) internal successors, (122884), 106501 states have internal predecessors, (122884), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:38:13,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106505 states to 106505 states and 122887 transitions. [2021-10-28 23:38:13,590 INFO L78 Accepts]: Start accepts. Automaton has 106505 states and 122887 transitions. Word has length 34 [2021-10-28 23:38:13,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:38:13,591 INFO L470 AbstractCegarLoop]: Abstraction has 106505 states and 122887 transitions. [2021-10-28 23:38:13,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:38:13,591 INFO L276 IsEmpty]: Start isEmpty. Operand 106505 states and 122887 transitions. [2021-10-28 23:38:13,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 23:38:13,665 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:38:13,665 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:38:13,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-10-28 23:38:13,666 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr1ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 23:38:13,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:38:13,667 INFO L85 PathProgramCache]: Analyzing trace with hash 404372010, now seen corresponding path program 1 times [2021-10-28 23:38:13,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:38:13,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489217403] [2021-10-28 23:38:13,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:38:13,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:38:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:38:13,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:38:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:38:13,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:38:13,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:38:13,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489217403] [2021-10-28 23:38:13,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489217403] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:38:13,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:38:13,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:38:13,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122787760] [2021-10-28 23:38:13,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:38:13,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:38:13,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:38:13,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:38:13,729 INFO L87 Difference]: Start difference. First operand 106505 states and 122887 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:38:14,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:38:14,184 INFO L93 Difference]: Finished difference Result 133127 states and 147462 transitions. [2021-10-28 23:38:14,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:38:14,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2021-10-28 23:38:14,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:38:14,185 INFO L225 Difference]: With dead ends: 133127 [2021-10-28 23:38:14,185 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 23:38:14,186 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:38:14,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 23:38:14,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 23:38:14,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:38:14,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 23:38:14,186 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2021-10-28 23:38:14,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:38:14,186 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:38:14,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:38:14,187 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:38:14,187 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 23:38:14,190 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:38:14,191 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 23:38:14,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-10-28 23:38:14,195 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:38:14,197 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:38:14,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:38:14 BoogieIcfgContainer [2021-10-28 23:38:14,200 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:38:14,201 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:38:14,201 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:38:14,201 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:38:14,202 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:37:50" (3/4) ... [2021-10-28 23:38:14,206 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:38:14,215 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2021-10-28 23:38:14,215 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-10-28 23:38:14,215 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-10-28 23:38:14,223 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-28 23:38:14,224 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 23:38:14,224 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-28 23:38:14,225 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:38:14,284 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58a64e-1e88-48af-a7e4-710794f3ce96/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:38:14,284 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:38:14,287 INFO L168 Benchmark]: Toolchain (without parser) took 25330.00 ms. Allocated memory was 92.3 MB in the beginning and 10.9 GB in the end (delta: 10.8 GB). Free memory was 54.1 MB in the beginning and 9.6 GB in the end (delta: -9.5 GB). Peak memory consumption was 1.3 GB. Max. memory is 16.1 GB. [2021-10-28 23:38:14,287 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 92.3 MB. Free memory was 70.2 MB in the beginning and 70.2 MB in the end (delta: 54.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:38:14,288 INFO L168 Benchmark]: CACSL2BoogieTranslator took 474.73 ms. Allocated memory was 92.3 MB in the beginning and 121.6 MB in the end (delta: 29.4 MB). Free memory was 53.9 MB in the beginning and 99.4 MB in the end (delta: -45.5 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:38:14,289 INFO L168 Benchmark]: Boogie Preprocessor took 51.20 ms. Allocated memory is still 121.6 MB. Free memory was 99.4 MB in the beginning and 97.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:38:14,289 INFO L168 Benchmark]: RCFGBuilder took 671.64 ms. Allocated memory is still 121.6 MB. Free memory was 97.3 MB in the beginning and 83.4 MB in the end (delta: 13.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:38:14,290 INFO L168 Benchmark]: TraceAbstraction took 24036.40 ms. Allocated memory was 121.6 MB in the beginning and 10.9 GB in the end (delta: 10.7 GB). Free memory was 82.6 MB in the beginning and 9.6 GB in the end (delta: -9.5 GB). Peak memory consumption was 1.3 GB. Max. memory is 16.1 GB. [2021-10-28 23:38:14,290 INFO L168 Benchmark]: Witness Printer took 83.51 ms. Allocated memory is still 10.9 GB. Free memory was 9.6 GB in the beginning and 9.6 GB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:38:14,293 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 92.3 MB. Free memory was 70.2 MB in the beginning and 70.2 MB in the end (delta: 54.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 474.73 ms. Allocated memory was 92.3 MB in the beginning and 121.6 MB in the end (delta: 29.4 MB). Free memory was 53.9 MB in the beginning and 99.4 MB in the end (delta: -45.5 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.20 ms. Allocated memory is still 121.6 MB. Free memory was 99.4 MB in the beginning and 97.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 671.64 ms. Allocated memory is still 121.6 MB. Free memory was 97.3 MB in the beginning and 83.4 MB in the end (delta: 13.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 24036.40 ms. Allocated memory was 121.6 MB in the beginning and 10.9 GB in the end (delta: 10.7 GB). Free memory was 82.6 MB in the beginning and 9.6 GB in the end (delta: -9.5 GB). Peak memory consumption was 1.3 GB. Max. memory is 16.1 GB. * Witness Printer took 83.51 ms. Allocated memory is still 10.9 GB. Free memory was 9.6 GB in the beginning and 9.6 GB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 191]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 6]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 55 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 23.9s, OverallIterations: 34, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.7s, AutomataDifference: 10.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 3409 SDtfs, 5093 SDslu, 201 SDs, 0 SdLazy, 2412 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 235 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106505occurred in iteration=33, InterpolantAutomatonStates: 135, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 9.9s AutomataMinimizationTime, 34 MinimizatonAttempts, 16418 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 954 NumberOfCodeBlocks, 954 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 920 ConstructedInterpolants, 0 QuantifiedInterpolants, 2864 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 34 InterpolantComputations, 34 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 23:38:14,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58a64e-1e88-48af-a7e4-710794f3ce96/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...