./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-lit/sssc12.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/config/GemCutterMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-lit/sssc12.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB --witnessprinter.witness.filename witness --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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f04269da33313e0538e960083eba1e7b90d9e89847d2a89d06392d6991a3ed98 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-22 08:56:37,370 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 08:56:37,450 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf [2023-11-22 08:56:37,454 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 08:56:37,455 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 08:56:37,483 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 08:56:37,484 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 08:56:37,484 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 08:56:37,485 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 08:56:37,486 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 08:56:37,487 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 08:56:37,487 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 08:56:37,488 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 08:56:37,489 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 08:56:37,489 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 08:56:37,490 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 08:56:37,490 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 08:56:37,491 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 08:56:37,491 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-22 08:56:37,492 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-22 08:56:37,492 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-22 08:56:37,493 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 08:56:37,493 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-22 08:56:37,494 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-22 08:56:37,494 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 08:56:37,494 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 08:56:37,495 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 08:56:37,495 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 08:56:37,496 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 08:56:37,496 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 08:56:37,496 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 08:56:37,497 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 08:56:37,497 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 08:56:37,498 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 08:56:37,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 08:56:37,499 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 08:56:37,499 INFO L153 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2023-11-22 08:56:37,499 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-22 08:56:37,500 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-22 08:56:37,500 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-22 08:56:37,501 INFO L153 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_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f04269da33313e0538e960083eba1e7b90d9e89847d2a89d06392d6991a3ed98 [2023-11-22 08:56:37,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 08:56:37,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 08:56:37,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 08:56:37,848 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 08:56:37,849 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 08:56:37,850 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/../../sv-benchmarks/c/pthread-lit/sssc12.i [2023-11-22 08:56:41,081 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 08:56:41,479 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 08:56:41,479 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/sv-benchmarks/c/pthread-lit/sssc12.i [2023-11-22 08:56:41,501 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/data/2f07776ea/9408a0bebb854088ace0dc4ca6374bcc/FLAGe61755751 [2023-11-22 08:56:41,528 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/data/2f07776ea/9408a0bebb854088ace0dc4ca6374bcc [2023-11-22 08:56:41,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 08:56:41,536 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 08:56:41,539 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 08:56:41,539 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 08:56:41,546 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 08:56:41,548 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:56:41" (1/1) ... [2023-11-22 08:56:41,549 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c058bec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:41, skipping insertion in model container [2023-11-22 08:56:41,550 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:56:41" (1/1) ... [2023-11-22 08:56:41,608 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 08:56:42,239 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 08:56:42,253 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 08:56:42,341 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 08:56:42,405 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-22 08:56:42,406 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-22 08:56:42,414 INFO L206 MainTranslator]: Completed translation [2023-11-22 08:56:42,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:42 WrapperNode [2023-11-22 08:56:42,415 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 08:56:42,416 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 08:56:42,417 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 08:56:42,417 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 08:56:42,425 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:42" (1/1) ... [2023-11-22 08:56:42,453 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:42" (1/1) ... [2023-11-22 08:56:42,495 INFO L138 Inliner]: procedures = 275, calls = 24, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 85 [2023-11-22 08:56:42,495 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 08:56:42,496 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 08:56:42,496 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 08:56:42,497 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 08:56:42,508 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:42" (1/1) ... [2023-11-22 08:56:42,508 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:42" (1/1) ... [2023-11-22 08:56:42,512 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:42" (1/1) ... [2023-11-22 08:56:42,512 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:42" (1/1) ... [2023-11-22 08:56:42,521 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:42" (1/1) ... [2023-11-22 08:56:42,525 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:42" (1/1) ... [2023-11-22 08:56:42,536 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:42" (1/1) ... [2023-11-22 08:56:42,538 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:42" (1/1) ... [2023-11-22 08:56:42,540 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 08:56:42,541 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 08:56:42,542 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 08:56:42,542 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 08:56:42,543 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:42" (1/1) ... [2023-11-22 08:56:42,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 08:56:42,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:56:42,598 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 08:56:42,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 08:56:42,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-22 08:56:42,644 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2023-11-22 08:56:42,644 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2023-11-22 08:56:42,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-22 08:56:42,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 08:56:42,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-22 08:56:42,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-22 08:56:42,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-22 08:56:42,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 08:56:42,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-22 08:56:42,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 08:56:42,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 08:56:42,649 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-22 08:56:42,874 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 08:56:42,880 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 08:56:43,159 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 08:56:43,389 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 08:56:43,389 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-22 08:56:43,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:56:43 BoogieIcfgContainer [2023-11-22 08:56:43,390 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 08:56:43,393 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 08:56:43,394 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 08:56:43,398 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 08:56:43,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 08:56:41" (1/3) ... [2023-11-22 08:56:43,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@761d6d9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:56:43, skipping insertion in model container [2023-11-22 08:56:43,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:42" (2/3) ... [2023-11-22 08:56:43,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@761d6d9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:56:43, skipping insertion in model container [2023-11-22 08:56:43,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:56:43" (3/3) ... [2023-11-22 08:56:43,404 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12.i [2023-11-22 08:56:43,421 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 08:56:43,421 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-22 08:56:43,421 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-22 08:56:43,497 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-22 08:56:43,577 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 08:56:43,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-22 08:56:43,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:56:43,580 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-22 08:56:43,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-11-22 08:56:43,640 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-22 08:56:43,652 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-22 08:56:43,659 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@53743c56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 08:56:43,659 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-22 08:56:43,847 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 1 more)] === [2023-11-22 08:56:43,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:56:43,853 INFO L85 PathProgramCache]: Analyzing trace with hash -854908545, now seen corresponding path program 1 times [2023-11-22 08:56:43,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:56:43,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368534095] [2023-11-22 08:56:43,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:43,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:56:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-22 08:56:44,004 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-22 08:56:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-22 08:56:44,057 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-22 08:56:44,060 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-22 08:56:44,061 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-11-22 08:56:44,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 4 remaining) [2023-11-22 08:56:44,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 4 remaining) [2023-11-22 08:56:44,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2023-11-22 08:56:44,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 08:56:44,074 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-22 08:56:44,077 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-11-22 08:56:44,078 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-22 08:56:44,078 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-22 08:56:44,125 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-22 08:56:44,129 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 08:56:44,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-22 08:56:44,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:56:44,168 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-22 08:56:44,179 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-22 08:56:44,179 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread2of2ForFork0 ======== [2023-11-22 08:56:44,185 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@53743c56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 08:56:44,186 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-22 08:56:44,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process [2023-11-22 08:56:44,522 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-22 08:56:44,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:56:44,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1810644947, now seen corresponding path program 1 times [2023-11-22 08:56:44,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:56:44,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869978791] [2023-11-22 08:56:44,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:44,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:56:44,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:56:44,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 08:56:44,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:56:44,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869978791] [2023-11-22 08:56:44,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869978791] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 08:56:44,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 08:56:44,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-22 08:56:44,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288316549] [2023-11-22 08:56:44,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 08:56:44,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 08:56:44,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:56:44,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 08:56:44,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 08:56:44,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:44,988 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:56:44,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:56:44,989 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:45,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:45,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 08:56:45,111 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-22 08:56:45,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:56:45,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1810644948, now seen corresponding path program 1 times [2023-11-22 08:56:45,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:56:45,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059185294] [2023-11-22 08:56:45,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:45,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:56:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:56:45,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 08:56:45,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:56:45,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059185294] [2023-11-22 08:56:45,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059185294] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 08:56:45,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 08:56:45,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 08:56:45,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929810713] [2023-11-22 08:56:45,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 08:56:45,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 08:56:45,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:56:45,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 08:56:45,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-22 08:56:45,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:45,902 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:56:45,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:56:45,903 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:45,903 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:46,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:46,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:56:46,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-22 08:56:46,217 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-22 08:56:46,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:56:46,217 INFO L85 PathProgramCache]: Analyzing trace with hash 437189339, now seen corresponding path program 1 times [2023-11-22 08:56:46,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:56:46,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780980285] [2023-11-22 08:56:46,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:46,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:56:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:56:46,879 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 08:56:46,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:56:46,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780980285] [2023-11-22 08:56:46,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780980285] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 08:56:46,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520342682] [2023-11-22 08:56:46,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:46,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:56:46,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:56:46,884 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 08:56:46,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-22 08:56:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:56:47,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-22 08:56:47,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 08:56:47,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2023-11-22 08:56:47,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 08:56:47,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-22 08:56:48,478 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 08:56:48,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 08:56:49,400 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 08:56:49,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520342682] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 08:56:49,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 08:56:49,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-22 08:56:49,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357259614] [2023-11-22 08:56:49,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 08:56:49,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-22 08:56:49,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:56:49,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-22 08:56:49,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-11-22 08:56:49,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:49,406 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:56:49,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:56:49,407 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:49,407 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:56:49,407 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:50,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:50,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:56:50,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-22 08:56:50,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-22 08:56:51,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:56:51,011 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-22 08:56:51,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:56:51,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1884096240, now seen corresponding path program 2 times [2023-11-22 08:56:51,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:56:51,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14347041] [2023-11-22 08:56:51,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:51,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:56:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:56:51,835 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 08:56:51,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:56:51,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14347041] [2023-11-22 08:56:51,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14347041] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 08:56:51,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068509489] [2023-11-22 08:56:51,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 08:56:51,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:56:51,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:56:51,838 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 08:56:51,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-22 08:56:51,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 08:56:51,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 08:56:51,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-22 08:56:51,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 08:56:51,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-22 08:56:52,619 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-22 08:56:52,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 08:56:53,556 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-22 08:56:53,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068509489] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 08:56:53,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 08:56:53,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 17 [2023-11-22 08:56:53,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843189913] [2023-11-22 08:56:53,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 08:56:53,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-22 08:56:53,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:56:53,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-22 08:56:53,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-11-22 08:56:53,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:53,563 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:56:53,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:56:53,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:53,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:56:53,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2023-11-22 08:56:53,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:55,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:55,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:56:55,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-22 08:56:55,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-22 08:56:55,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-22 08:56:55,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:56:55,749 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr0ASSERT_VIOLATIONMEMORY_LEAK === [thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-22 08:56:55,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:56:55,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1088735616, now seen corresponding path program 1 times [2023-11-22 08:56:55,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:56:55,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142680081] [2023-11-22 08:56:55,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:55,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:56:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:56:56,302 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 08:56:56,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:56:56,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142680081] [2023-11-22 08:56:56,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142680081] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 08:56:56,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031102389] [2023-11-22 08:56:56,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:56,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:56:56,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:56:56,306 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 08:56:56,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-22 08:56:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:56:56,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-22 08:56:56,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 08:56:57,464 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 45 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 08:56:57,464 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 08:56:58,021 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 50 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 08:56:58,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031102389] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 08:56:58,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 08:56:58,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 34 [2023-11-22 08:56:58,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105746606] [2023-11-22 08:56:58,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 08:56:58,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-22 08:56:58,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:56:58,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-22 08:56:58,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=897, Unknown=0, NotChecked=0, Total=1122 [2023-11-22 08:56:58,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:58,032 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:56:58,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:56:58,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:58,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:56:58,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2023-11-22 08:56:58,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2023-11-22 08:56:58,034 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:57:04,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:57:04,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:57:04,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-22 08:57:04,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-22 08:57:04,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-22 08:57:04,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-22 08:57:04,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:57:04,433 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thrErr0ASSERT_VIOLATIONMEMORY_LEAK === [thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-22 08:57:04,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:57:04,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1810645974, now seen corresponding path program 1 times [2023-11-22 08:57:04,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:57:04,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245412432] [2023-11-22 08:57:04,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:57:04,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:57:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:57:04,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 08:57:04,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:57:04,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245412432] [2023-11-22 08:57:04,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245412432] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 08:57:04,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 08:57:04,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 08:57:04,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393167068] [2023-11-22 08:57:04,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 08:57:04,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 08:57:04,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:57:04,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 08:57:04,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-22 08:57:04,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:57:04,664 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:57:04,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:57:04,664 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:57:04,664 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:57:04,665 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2023-11-22 08:57:04,665 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2023-11-22 08:57:04,665 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2023-11-22 08:57:04,665 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:57:05,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:57:05,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:57:05,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-22 08:57:05,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-22 08:57:05,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-22 08:57:05,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 08:57:05,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-22 08:57:05,689 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thrErr0ASSERT_VIOLATIONMEMORY_LEAK === [thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-22 08:57:05,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:57:05,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1458276662, now seen corresponding path program 1 times [2023-11-22 08:57:05,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:57:05,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613992484] [2023-11-22 08:57:05,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:57:05,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:57:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:57:05,750 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 08:57:05,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:57:05,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613992484] [2023-11-22 08:57:05,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613992484] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 08:57:05,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 08:57:05,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 08:57:05,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097824105] [2023-11-22 08:57:05,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 08:57:05,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 08:57:05,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:57:05,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 08:57:05,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 08:57:05,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:57:05,755 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:57:05,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:57:05,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:57:05,756 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:57:05,756 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2023-11-22 08:57:05,756 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2023-11-22 08:57:05,757 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2023-11-22 08:57:05,757 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2023-11-22 08:57:05,757 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:57:05,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:57:05,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:57:05,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-22 08:57:05,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-22 08:57:05,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-22 08:57:05,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 08:57:05,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:57:05,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-22 08:57:05,920 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thrErr0ASSERT_VIOLATIONMEMORY_LEAK === [thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-22 08:57:05,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:57:05,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1661975580, now seen corresponding path program 1 times [2023-11-22 08:57:05,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:57:05,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114285634] [2023-11-22 08:57:05,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:57:05,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:57:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:57:06,350 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 08:57:06,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:57:06,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114285634] [2023-11-22 08:57:06,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114285634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 08:57:06,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 08:57:06,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 08:57:06,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669051486] [2023-11-22 08:57:06,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 08:57:06,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 08:57:06,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:57:06,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 08:57:06,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-22 08:57:06,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:57:06,354 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:57:06,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:57:06,354 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:57:06,354 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:57:06,355 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2023-11-22 08:57:06,355 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2023-11-22 08:57:06,355 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2023-11-22 08:57:06,355 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2023-11-22 08:57:06,355 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:57:06,355 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:57:07,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:57:07,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:57:07,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-22 08:57:07,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-22 08:57:07,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-22 08:57:07,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 08:57:07,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:57:07,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 08:57:07,017 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 3 remaining) [2023-11-22 08:57:07,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 3 remaining) [2023-11-22 08:57:07,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thrErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 3 remaining) [2023-11-22 08:57:07,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-22 08:57:07,035 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-11-22 08:57:07,036 INFO L307 ceAbstractionStarter]: Result for error location thrThread2of2ForFork0 was SAFE,SAFE,SAFE (1/3) [2023-11-22 08:57:07,041 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 08:57:07,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-22 08:57:07,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:57:07,045 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-22 08:57:07,050 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-22 08:57:07,050 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread1of2ForFork0 ======== [2023-11-22 08:57:07,051 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@53743c56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 08:57:07,051 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-22 08:57:07,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (7)] Waiting until timeout for monitored process [2023-11-22 08:57:07,152 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-22 08:57:07,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:57:07,153 INFO L85 PathProgramCache]: Analyzing trace with hash 365397747, now seen corresponding path program 1 times [2023-11-22 08:57:07,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:57:07,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330437564] [2023-11-22 08:57:07,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:57:07,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:57:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:57:07,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:57:07,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:57:07,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330437564] [2023-11-22 08:57:07,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330437564] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 08:57:07,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 08:57:07,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-22 08:57:07,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195912761] [2023-11-22 08:57:07,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 08:57:07,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 08:57:07,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:57:07,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 08:57:07,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 08:57:07,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:57:07,231 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:57:07,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:57:07,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:57:07,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:57:07,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-22 08:57:07,270 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-22 08:57:07,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:57:07,270 INFO L85 PathProgramCache]: Analyzing trace with hash 365397748, now seen corresponding path program 1 times [2023-11-22 08:57:07,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:57:07,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169765823] [2023-11-22 08:57:07,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:57:07,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:57:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:57:07,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:57:07,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:57:07,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169765823] [2023-11-22 08:57:07,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169765823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 08:57:07,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 08:57:07,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 08:57:07,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245699526] [2023-11-22 08:57:07,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 08:57:07,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 08:57:07,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:57:07,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 08:57:07,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-22 08:57:07,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:57:07,499 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:57:07,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:57:07,499 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:57:07,500 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:57:07,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:57:07,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:57:07,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-22 08:57:07,653 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-22 08:57:07,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:57:07,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1220159099, now seen corresponding path program 1 times [2023-11-22 08:57:07,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:57:07,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673218504] [2023-11-22 08:57:07,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:57:07,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:57:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:57:08,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:57:08,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:57:08,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673218504] [2023-11-22 08:57:08,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673218504] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 08:57:08,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183418193] [2023-11-22 08:57:08,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:57:08,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:57:08,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:57:08,147 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 08:57:08,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-22 08:57:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:57:08,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-22 08:57:08,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 08:57:08,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2023-11-22 08:57:08,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 08:57:08,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2023-11-22 08:57:09,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:57:09,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 08:57:09,538 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:57:09,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183418193] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 08:57:09,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 08:57:09,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-22 08:57:09,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159760467] [2023-11-22 08:57:09,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 08:57:09,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-22 08:57:09,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:57:09,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-22 08:57:09,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-11-22 08:57:09,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:57:09,541 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:57:09,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:57:09,542 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:57:09,542 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:57:09,542 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:57:10,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:57:10,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:57:10,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-22 08:57:10,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-22 08:57:10,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:57:10,736 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-22 08:57:10,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:57:10,736 INFO L85 PathProgramCache]: Analyzing trace with hash -859676656, now seen corresponding path program 2 times [2023-11-22 08:57:10,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:57:10,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513046120] [2023-11-22 08:57:10,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:57:10,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:57:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:57:11,313 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:57:11,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:57:11,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513046120] [2023-11-22 08:57:11,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513046120] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 08:57:11,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65454164] [2023-11-22 08:57:11,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 08:57:11,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:57:11,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:57:11,317 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 08:57:11,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-22 08:57:11,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 08:57:11,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 08:57:11,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-22 08:57:11,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 08:57:11,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-22 08:57:11,866 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-22 08:57:11,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 08:57:12,253 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-22 08:57:12,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65454164] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 08:57:12,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 08:57:12,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 3] total 14 [2023-11-22 08:57:12,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375506781] [2023-11-22 08:57:12,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 08:57:12,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-22 08:57:12,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:57:12,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-22 08:57:12,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-11-22 08:57:12,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:57:12,257 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:57:12,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:57:12,257 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:57:12,257 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:57:12,257 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2023-11-22 08:57:12,257 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:57:14,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:57:14,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:57:14,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-22 08:57:14,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-22 08:57:14,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-22 08:57:14,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-22 08:57:14,249 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr0ASSERT_VIOLATIONMEMORY_LEAK === [thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-22 08:57:14,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:57:14,249 INFO L85 PathProgramCache]: Analyzing trace with hash -784225376, now seen corresponding path program 1 times [2023-11-22 08:57:14,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:57:14,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62412632] [2023-11-22 08:57:14,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:57:14,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:57:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:57:14,691 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 45 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:57:14,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:57:14,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62412632] [2023-11-22 08:57:14,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62412632] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 08:57:14,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070056828] [2023-11-22 08:57:14,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:57:14,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:57:14,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:57:14,693 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 08:57:14,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-22 08:57:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:57:14,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-22 08:57:14,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 08:57:15,680 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 45 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:57:15,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 08:57:16,384 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 60 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:57:16,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070056828] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 08:57:16,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 08:57:16,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-11-22 08:57:16,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301332952] [2023-11-22 08:57:16,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 08:57:16,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-22 08:57:16,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:57:16,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-22 08:57:16,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=694, Unknown=0, NotChecked=0, Total=930 [2023-11-22 08:57:16,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:57:16,389 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:57:16,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.4193548387096775) internal successors, (106), 30 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:57:16,389 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:57:16,389 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:57:16,389 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2023-11-22 08:57:16,390 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2023-11-22 08:57:16,390 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:57:20,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:57:20,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:57:20,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-22 08:57:20,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-22 08:57:20,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-22 08:57:20,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-22 08:57:20,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-22 08:57:20,581 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thrErr0ASSERT_VIOLATIONMEMORY_LEAK === [thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-22 08:57:20,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:57:20,581 INFO L85 PathProgramCache]: Analyzing trace with hash 365398774, now seen corresponding path program 1 times [2023-11-22 08:57:20,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:57:20,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655441350] [2023-11-22 08:57:20,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:57:20,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:57:20,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:57:20,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:57:20,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:57:20,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655441350] [2023-11-22 08:57:20,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655441350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 08:57:20,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 08:57:20,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 08:57:20,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42608116] [2023-11-22 08:57:20,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 08:57:20,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 08:57:20,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:57:20,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 08:57:20,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-22 08:57:20,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:57:20,725 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:57:20,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:57:20,725 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:57:20,725 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:57:20,725 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2023-11-22 08:57:20,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2023-11-22 08:57:20,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2023-11-22 08:57:20,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:57:21,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:57:21,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:57:21,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-22 08:57:21,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-22 08:57:21,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-22 08:57:21,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 08:57:21,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 3 remaining) [2023-11-22 08:57:21,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 3 remaining) [2023-11-22 08:57:21,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thrErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 3 remaining) [2023-11-22 08:57:21,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-22 08:57:21,792 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2023-11-22 08:57:21,792 INFO L307 ceAbstractionStarter]: Result for error location thrThread1of2ForFork0 was SAFE,SAFE,SAFE (2/3) [2023-11-22 08:57:21,796 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 08:57:21,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-22 08:57:21,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:57:21,801 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-22 08:57:21,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (11)] Waiting until timeout for monitored process [2023-11-22 08:57:21,811 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-22 08:57:21,812 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-22 08:57:21,812 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@53743c56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 08:57:21,812 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-22 08:57:21,885 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 1 more)] === [2023-11-22 08:57:21,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:57:21,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1905041393, now seen corresponding path program 1 times [2023-11-22 08:57:21,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:57:21,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002346999] [2023-11-22 08:57:21,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:57:21,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:57:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-22 08:57:21,899 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-22 08:57:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-22 08:57:21,917 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-22 08:57:21,917 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-22 08:57:21,917 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-11-22 08:57:21,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 4 remaining) [2023-11-22 08:57:21,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 4 remaining) [2023-11-22 08:57:21,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2023-11-22 08:57:21,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-22 08:57:21,919 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-22 08:57:21,920 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (3/3) [2023-11-22 08:57:21,920 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-22 08:57:21,920 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-22 08:57:21,941 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-22 08:57:21,944 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 08:57:21,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-22 08:57:21,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:57:21,946 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-22 08:57:21,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (12)] Waiting until timeout for monitored process [2023-11-22 08:57:21,950 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-22 08:57:21,951 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread1of3ForFork0 ======== [2023-11-22 08:57:21,952 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@53743c56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 08:57:21,952 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-22 08:57:22,065 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-22 08:57:22,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:57:22,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1398614494, now seen corresponding path program 1 times [2023-11-22 08:57:22,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:57:22,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341350250] [2023-11-22 08:57:22,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:57:22,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:57:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:57:22,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:57:22,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:57:22,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341350250] [2023-11-22 08:57:22,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341350250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 08:57:22,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 08:57:22,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-22 08:57:22,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436937287] [2023-11-22 08:57:22,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 08:57:22,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 08:57:22,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:57:22,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 08:57:22,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 08:57:22,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:57:22,104 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:57:22,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:57:22,105 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:57:22,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:57:22,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-22 08:57:22,146 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-22 08:57:22,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:57:22,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1398614495, now seen corresponding path program 1 times [2023-11-22 08:57:22,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:57:22,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994314224] [2023-11-22 08:57:22,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:57:22,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:57:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:57:22,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:57:22,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:57:22,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994314224] [2023-11-22 08:57:22,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994314224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 08:57:22,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 08:57:22,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 08:57:22,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769941368] [2023-11-22 08:57:22,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 08:57:22,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 08:57:22,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:57:22,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 08:57:22,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-22 08:57:22,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:57:22,377 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:57:22,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:57:22,377 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:57:22,378 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:57:22,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:57:22,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:57:22,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-22 08:57:22,503 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thrErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-22 08:57:22,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:57:22,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1407896794, now seen corresponding path program 1 times [2023-11-22 08:57:22,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:57:22,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203188911] [2023-11-22 08:57:22,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:57:22,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:57:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:57:22,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:57:22,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:57:22,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203188911] [2023-11-22 08:57:22,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203188911] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 08:57:22,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848805511] [2023-11-22 08:57:22,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:57:22,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:57:22,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:57:22,856 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 08:57:22,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-22 08:57:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:57:22,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-22 08:57:22,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 08:57:22,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-22 08:57:23,413 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:57:23,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 08:57:23,727 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:57:23,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848805511] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 08:57:23,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 08:57:23,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-22 08:57:23,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662673623] [2023-11-22 08:57:23,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 08:57:23,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-22 08:57:23,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:57:23,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-22 08:57:23,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-11-22 08:57:23,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:57:23,730 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:57:23,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:57:23,730 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:57:23,731 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:57:23,731 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:57:25,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:57:25,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:57:25,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-22 08:57:25,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aead8470-6c56-4c86-a18c-5ba9b005a786/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0