./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/08_rand_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a 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_ae617125-f57e-4bd3-8760-085e23575418/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae617125-f57e-4bd3-8760-085e23575418/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae617125-f57e-4bd3-8760-085e23575418/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae617125-f57e-4bd3-8760-085e23575418/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/08_rand_cas.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae617125-f57e-4bd3-8760-085e23575418/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae617125-f57e-4bd3-8760-085e23575418/bin/uautomizer-verify-4GaUIPS5ZU --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 111430583c5cad5728291a83d9964586feec908088fcc502d1f1ab24d409725c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:09:46,447 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:09:46,512 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae617125-f57e-4bd3-8760-085e23575418/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-31 22:09:46,517 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:09:46,518 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:09:46,544 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:09:46,546 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:09:46,546 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:09:46,547 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:09:46,547 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:09:46,548 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:09:46,548 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:09:46,549 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:09:46,550 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:09:46,550 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:09:46,550 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:09:46,551 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:09:46,551 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:09:46,552 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:09:46,552 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:09:46,552 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 22:09:46,557 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 22:09:46,557 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-31 22:09:46,557 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:09:46,558 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:09:46,558 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:09:46,558 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:09:46,558 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:09:46,559 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:09:46,559 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:09:46,559 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:09:46,559 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:09:46,563 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:09:46,563 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:09:46,564 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:09:46,564 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:09:46,564 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:09:46,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:09:46,565 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:09:46,565 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:09:46,565 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:09:46,566 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:09:46,567 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_ae617125-f57e-4bd3-8760-085e23575418/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae617125-f57e-4bd3-8760-085e23575418/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 111430583c5cad5728291a83d9964586feec908088fcc502d1f1ab24d409725c [2024-10-31 22:09:46,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:09:46,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:09:46,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:09:46,897 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:09:46,898 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:09:46,899 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae617125-f57e-4bd3-8760-085e23575418/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-ext/08_rand_cas.i Unable to find full path for "g++" [2024-10-31 22:09:49,203 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:09:49,458 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:09:49,459 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae617125-f57e-4bd3-8760-085e23575418/sv-benchmarks/c/pthread-ext/08_rand_cas.i [2024-10-31 22:09:49,476 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae617125-f57e-4bd3-8760-085e23575418/bin/uautomizer-verify-4GaUIPS5ZU/data/15b4793ca/fc04ef85ad7c4ff9ab58776c2c03e45a/FLAGb837382bb [2024-10-31 22:09:49,494 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae617125-f57e-4bd3-8760-085e23575418/bin/uautomizer-verify-4GaUIPS5ZU/data/15b4793ca/fc04ef85ad7c4ff9ab58776c2c03e45a [2024-10-31 22:09:49,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:09:49,500 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:09:49,502 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:09:49,502 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:09:49,510 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:09:49,511 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:09:49" (1/1) ... [2024-10-31 22:09:49,516 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c33b687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:49, skipping insertion in model container [2024-10-31 22:09:49,517 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:09:49" (1/1) ... [2024-10-31 22:09:49,586 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:09:50,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:09:50,233 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:09:50,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:09:50,353 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:09:50,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:50 WrapperNode [2024-10-31 22:09:50,354 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:09:50,356 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:09:50,356 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:09:50,356 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:09:50,366 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:50" (1/1) ... [2024-10-31 22:09:50,382 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:50" (1/1) ... [2024-10-31 22:09:50,418 INFO L138 Inliner]: procedures = 178, calls = 38, calls flagged for inlining = 16, calls inlined = 17, statements flattened = 151 [2024-10-31 22:09:50,421 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:09:50,423 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:09:50,423 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:09:50,424 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:09:50,440 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:50" (1/1) ... [2024-10-31 22:09:50,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:50" (1/1) ... [2024-10-31 22:09:50,449 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:50" (1/1) ... [2024-10-31 22:09:50,492 INFO L175 MemorySlicer]: Split 11 memory accesses to 3 slices as follows [6, 2, 3]. 55 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [1, 2, 0]. The 4 writes are split as follows [2, 0, 2]. [2024-10-31 22:09:50,492 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:50" (1/1) ... [2024-10-31 22:09:50,493 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:50" (1/1) ... [2024-10-31 22:09:50,509 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:50" (1/1) ... [2024-10-31 22:09:50,523 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:50" (1/1) ... [2024-10-31 22:09:50,528 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:50" (1/1) ... [2024-10-31 22:09:50,534 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:50" (1/1) ... [2024-10-31 22:09:50,539 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:09:50,543 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:09:50,543 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:09:50,548 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:09:50,549 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:50" (1/1) ... [2024-10-31 22:09:50,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:09:50,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae617125-f57e-4bd3-8760-085e23575418/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:50,594 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae617125-f57e-4bd3-8760-085e23575418/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:50,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae617125-f57e-4bd3-8760-085e23575418/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:09:50,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:09:50,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:09:50,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-31 22:09:50,646 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-31 22:09:50,646 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-31 22:09:50,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:09:50,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:09:50,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-31 22:09:50,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:09:50,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:09:50,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 22:09:50,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:09:50,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:09:50,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:09:50,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:09:50,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:09:50,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:09:50,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:09:50,654 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:09:50,869 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:09:50,872 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:09:51,272 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:09:51,273 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:09:51,604 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:09:51,604 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-31 22:09:51,605 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:09:51 BoogieIcfgContainer [2024-10-31 22:09:51,605 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:09:51,608 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:09:51,608 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:09:51,612 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:09:51,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:09:49" (1/3) ... [2024-10-31 22:09:51,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322bcd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:09:51, skipping insertion in model container [2024-10-31 22:09:51,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:50" (2/3) ... [2024-10-31 22:09:51,614 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322bcd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:09:51, skipping insertion in model container [2024-10-31 22:09:51,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:09:51" (3/3) ... [2024-10-31 22:09:51,616 INFO L112 eAbstractionObserver]: Analyzing ICFG 08_rand_cas.i [2024-10-31 22:09:51,643 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:09:51,643 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2024-10-31 22:09:51,643 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:09:51,738 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:09:51,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 77 transitions, 158 flow [2024-10-31 22:09:51,838 INFO L124 PetriNetUnfolderBase]: 13/81 cut-off events. [2024-10-31 22:09:51,839 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:09:51,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 81 events. 13/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 205 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 74. Up to 3 conditions per place. [2024-10-31 22:09:51,843 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 77 transitions, 158 flow [2024-10-31 22:09:51,849 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 77 transitions, 158 flow [2024-10-31 22:09:51,861 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:09:51,869 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@5da9e2e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:09:51,870 INFO L334 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2024-10-31 22:09:51,874 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:09:51,874 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-31 22:09:51,874 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:09:51,878 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:09:51,879 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:09:51,879 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-10-31 22:09:51,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:51,887 INFO L85 PathProgramCache]: Analyzing trace with hash 496103, now seen corresponding path program 1 times [2024-10-31 22:09:51,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:51,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893101966] [2024-10-31 22:09:51,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:51,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:52,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:52,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:52,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893101966] [2024-10-31 22:09:52,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893101966] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:52,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:52,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:09:52,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476717848] [2024-10-31 22:09:52,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:52,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:09:52,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:52,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:09:52,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:09:52,212 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 77 [2024-10-31 22:09:52,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 77 transitions, 158 flow. Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:52,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:09:52,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 77 [2024-10-31 22:09:52,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:09:52,476 INFO L124 PetriNetUnfolderBase]: 70/224 cut-off events. [2024-10-31 22:09:52,477 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:09:52,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 224 events. 70/224 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 849 event pairs, 58 based on Foata normal form. 24/197 useless extension candidates. Maximal degree in co-relation 367. Up to 156 conditions per place. [2024-10-31 22:09:52,485 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 34 selfloop transitions, 0 changer transitions 0/60 dead transitions. [2024-10-31 22:09:52,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 60 transitions, 192 flow [2024-10-31 22:09:52,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:09:52,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-31 22:09:52,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 100 transitions. [2024-10-31 22:09:52,501 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6493506493506493 [2024-10-31 22:09:52,503 INFO L175 Difference]: Start difference. First operand has 67 places, 77 transitions, 158 flow. Second operand 2 states and 100 transitions. [2024-10-31 22:09:52,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 60 transitions, 192 flow [2024-10-31 22:09:52,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 60 transitions, 192 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:09:52,510 INFO L231 Difference]: Finished difference. Result has 60 places, 60 transitions, 124 flow [2024-10-31 22:09:52,513 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=124, PETRI_PLACES=60, PETRI_TRANSITIONS=60} [2024-10-31 22:09:52,518 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, -7 predicate places. [2024-10-31 22:09:52,518 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 60 transitions, 124 flow [2024-10-31 22:09:52,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:52,519 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:09:52,519 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-31 22:09:52,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:09:52,520 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-10-31 22:09:52,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:52,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1896579585, now seen corresponding path program 1 times [2024-10-31 22:09:52,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:52,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565058277] [2024-10-31 22:09:52,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:52,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:52,571 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:09:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:52,630 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:09:52,630 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:09:52,634 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (39 of 40 remaining) [2024-10-31 22:09:52,637 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 40 remaining) [2024-10-31 22:09:52,637 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 40 remaining) [2024-10-31 22:09:52,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 40 remaining) [2024-10-31 22:09:52,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 40 remaining) [2024-10-31 22:09:52,639 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 40 remaining) [2024-10-31 22:09:52,640 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 40 remaining) [2024-10-31 22:09:52,641 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (32 of 40 remaining) [2024-10-31 22:09:52,641 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (31 of 40 remaining) [2024-10-31 22:09:52,642 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 40 remaining) [2024-10-31 22:09:52,642 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 40 remaining) [2024-10-31 22:09:52,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 40 remaining) [2024-10-31 22:09:52,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 40 remaining) [2024-10-31 22:09:52,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 40 remaining) [2024-10-31 22:09:52,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 40 remaining) [2024-10-31 22:09:52,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 40 remaining) [2024-10-31 22:09:52,645 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 40 remaining) [2024-10-31 22:09:52,646 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 40 remaining) [2024-10-31 22:09:52,646 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 40 remaining) [2024-10-31 22:09:52,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (20 of 40 remaining) [2024-10-31 22:09:52,648 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (19 of 40 remaining) [2024-10-31 22:09:52,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 40 remaining) [2024-10-31 22:09:52,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 40 remaining) [2024-10-31 22:09:52,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 40 remaining) [2024-10-31 22:09:52,651 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 40 remaining) [2024-10-31 22:09:52,651 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 40 remaining) [2024-10-31 22:09:52,652 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 40 remaining) [2024-10-31 22:09:52,652 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (12 of 40 remaining) [2024-10-31 22:09:52,652 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (11 of 40 remaining) [2024-10-31 22:09:52,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 40 remaining) [2024-10-31 22:09:52,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 40 remaining) [2024-10-31 22:09:52,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 40 remaining) [2024-10-31 22:09:52,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 40 remaining) [2024-10-31 22:09:52,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 40 remaining) [2024-10-31 22:09:52,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 40 remaining) [2024-10-31 22:09:52,657 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 40 remaining) [2024-10-31 22:09:52,657 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 40 remaining) [2024-10-31 22:09:52,658 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 40 remaining) [2024-10-31 22:09:52,660 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 40 remaining) [2024-10-31 22:09:52,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (0 of 40 remaining) [2024-10-31 22:09:52,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:09:52,662 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-31 22:09:52,669 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:09:52,670 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-31 22:09:52,825 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:09:52,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 147 transitions, 304 flow [2024-10-31 22:09:52,897 INFO L124 PetriNetUnfolderBase]: 26/156 cut-off events. [2024-10-31 22:09:52,898 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:09:52,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 156 events. 26/156 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 616 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 143. Up to 3 conditions per place. [2024-10-31 22:09:52,905 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 147 transitions, 304 flow [2024-10-31 22:09:52,910 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 147 transitions, 304 flow [2024-10-31 22:09:52,911 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:09:52,913 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@5da9e2e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:09:52,913 INFO L334 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2024-10-31 22:09:52,915 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:09:52,915 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-31 22:09:52,916 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:09:52,916 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:09:52,916 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:09:52,916 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-31 22:09:52,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:52,918 INFO L85 PathProgramCache]: Analyzing trace with hash 642074, now seen corresponding path program 1 times [2024-10-31 22:09:52,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:52,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326557488] [2024-10-31 22:09:52,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:52,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:52,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:52,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:52,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326557488] [2024-10-31 22:09:52,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326557488] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:52,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:52,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:09:52,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357982381] [2024-10-31 22:09:52,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:52,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:09:52,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:52,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:09:52,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:09:52,984 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 147 [2024-10-31 22:09:52,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 147 transitions, 304 flow. Second operand has 2 states, 2 states have (on average 53.0) internal successors, (106), 2 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) [2024-10-31 22:09:52,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:09:52,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 147 [2024-10-31 22:09:52,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:09:55,027 INFO L124 PetriNetUnfolderBase]: 4969/10043 cut-off events. [2024-10-31 22:09:55,027 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2024-10-31 22:09:55,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17698 conditions, 10043 events. 4969/10043 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 85367 event pairs, 4408 based on Foata normal form. 1464/8829 useless extension candidates. Maximal degree in co-relation 10993. Up to 7560 conditions per place. [2024-10-31 22:09:55,119 INFO L140 encePairwiseOnDemand]: 124/147 looper letters, 65 selfloop transitions, 0 changer transitions 0/116 dead transitions. [2024-10-31 22:09:55,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 116 transitions, 372 flow [2024-10-31 22:09:55,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:09:55,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-31 22:09:55,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 192 transitions. [2024-10-31 22:09:55,126 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2024-10-31 22:09:55,126 INFO L175 Difference]: Start difference. First operand has 126 places, 147 transitions, 304 flow. Second operand 2 states and 192 transitions. [2024-10-31 22:09:55,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 116 transitions, 372 flow [2024-10-31 22:09:55,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 116 transitions, 372 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:09:55,131 INFO L231 Difference]: Finished difference. Result has 114 places, 116 transitions, 242 flow [2024-10-31 22:09:55,131 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=242, PETRI_PLACES=114, PETRI_TRANSITIONS=116} [2024-10-31 22:09:55,132 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -12 predicate places. [2024-10-31 22:09:55,133 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 116 transitions, 242 flow [2024-10-31 22:09:55,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 53.0) internal successors, (106), 2 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) [2024-10-31 22:09:55,133 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:09:55,133 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:55,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:09:55,134 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-31 22:09:55,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:55,134 INFO L85 PathProgramCache]: Analyzing trace with hash -526338289, now seen corresponding path program 1 times [2024-10-31 22:09:55,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:55,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229253966] [2024-10-31 22:09:55,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:55,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:55,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:55,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:55,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229253966] [2024-10-31 22:09:55,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229253966] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:55,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:55,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:09:55,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558570329] [2024-10-31 22:09:55,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:55,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:09:55,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:55,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:09:55,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:09:55,344 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 147 [2024-10-31 22:09:55,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 116 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:55,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:09:55,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 147 [2024-10-31 22:09:55,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:09:57,060 INFO L124 PetriNetUnfolderBase]: 4269/8806 cut-off events. [2024-10-31 22:09:57,061 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2024-10-31 22:09:57,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15484 conditions, 8806 events. 4269/8806 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 73594 event pairs, 3102 based on Foata normal form. 0/6750 useless extension candidates. Maximal degree in co-relation 15479. Up to 5153 conditions per place. [2024-10-31 22:09:57,142 INFO L140 encePairwiseOnDemand]: 136/147 looper letters, 119 selfloop transitions, 3 changer transitions 0/171 dead transitions. [2024-10-31 22:09:57,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 171 transitions, 601 flow [2024-10-31 22:09:57,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:09:57,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:09:57,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2024-10-31 22:09:57,146 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2024-10-31 22:09:57,146 INFO L175 Difference]: Start difference. First operand has 114 places, 116 transitions, 242 flow. Second operand 3 states and 280 transitions. [2024-10-31 22:09:57,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 171 transitions, 601 flow [2024-10-31 22:09:57,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 171 transitions, 601 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:09:57,154 INFO L231 Difference]: Finished difference. Result has 117 places, 118 transitions, 275 flow [2024-10-31 22:09:57,155 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=117, PETRI_TRANSITIONS=118} [2024-10-31 22:09:57,157 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -9 predicate places. [2024-10-31 22:09:57,159 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 118 transitions, 275 flow [2024-10-31 22:09:57,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:57,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:09:57,160 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:57,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:09:57,160 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-31 22:09:57,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:57,161 INFO L85 PathProgramCache]: Analyzing trace with hash -526338288, now seen corresponding path program 1 times [2024-10-31 22:09:57,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:57,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016868175] [2024-10-31 22:09:57,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:57,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:57,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:57,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:57,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016868175] [2024-10-31 22:09:57,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016868175] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:57,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:57,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:09:57,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454493670] [2024-10-31 22:09:57,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:57,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:09:57,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:57,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:09:57,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:09:57,388 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 147 [2024-10-31 22:09:57,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 118 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:57,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:09:57,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 147 [2024-10-31 22:09:57,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:09:58,543 INFO L124 PetriNetUnfolderBase]: 3420/7215 cut-off events. [2024-10-31 22:09:58,543 INFO L125 PetriNetUnfolderBase]: For 183/183 co-relation queries the response was YES. [2024-10-31 22:09:58,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12903 conditions, 7215 events. 3420/7215 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 58536 event pairs, 3084 based on Foata normal form. 0/5900 useless extension candidates. Maximal degree in co-relation 12896. Up to 5255 conditions per place. [2024-10-31 22:09:58,584 INFO L140 encePairwiseOnDemand]: 138/147 looper letters, 60 selfloop transitions, 1 changer transitions 0/110 dead transitions. [2024-10-31 22:09:58,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 110 transitions, 381 flow [2024-10-31 22:09:58,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:09:58,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:09:58,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2024-10-31 22:09:58,587 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-10-31 22:09:58,587 INFO L175 Difference]: Start difference. First operand has 117 places, 118 transitions, 275 flow. Second operand 3 states and 217 transitions. [2024-10-31 22:09:58,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 110 transitions, 381 flow [2024-10-31 22:09:58,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 110 transitions, 378 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:09:58,593 INFO L231 Difference]: Finished difference. Result has 110 places, 110 transitions, 258 flow [2024-10-31 22:09:58,593 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=110, PETRI_TRANSITIONS=110} [2024-10-31 22:09:58,594 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -16 predicate places. [2024-10-31 22:09:58,594 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 110 transitions, 258 flow [2024-10-31 22:09:58,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:58,596 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:09:58,596 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-10-31 22:09:58,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:09:58,597 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-31 22:09:58,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:58,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1721433550, now seen corresponding path program 1 times [2024-10-31 22:09:58,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:58,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017759960] [2024-10-31 22:09:58,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:58,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:58,618 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:09:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:58,635 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:09:58,636 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:09:58,636 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (58 of 59 remaining) [2024-10-31 22:09:58,636 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 59 remaining) [2024-10-31 22:09:58,637 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 59 remaining) [2024-10-31 22:09:58,637 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 59 remaining) [2024-10-31 22:09:58,637 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 59 remaining) [2024-10-31 22:09:58,637 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 59 remaining) [2024-10-31 22:09:58,637 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 59 remaining) [2024-10-31 22:09:58,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (51 of 59 remaining) [2024-10-31 22:09:58,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (50 of 59 remaining) [2024-10-31 22:09:58,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 59 remaining) [2024-10-31 22:09:58,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 59 remaining) [2024-10-31 22:09:58,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 59 remaining) [2024-10-31 22:09:58,639 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 59 remaining) [2024-10-31 22:09:58,639 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 59 remaining) [2024-10-31 22:09:58,639 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 59 remaining) [2024-10-31 22:09:58,639 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 59 remaining) [2024-10-31 22:09:58,639 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 59 remaining) [2024-10-31 22:09:58,640 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 59 remaining) [2024-10-31 22:09:58,640 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 59 remaining) [2024-10-31 22:09:58,641 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (39 of 59 remaining) [2024-10-31 22:09:58,641 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (38 of 59 remaining) [2024-10-31 22:09:58,641 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 59 remaining) [2024-10-31 22:09:58,641 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 59 remaining) [2024-10-31 22:09:58,642 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 59 remaining) [2024-10-31 22:09:58,642 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 59 remaining) [2024-10-31 22:09:58,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 59 remaining) [2024-10-31 22:09:58,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 59 remaining) [2024-10-31 22:09:58,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (31 of 59 remaining) [2024-10-31 22:09:58,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (30 of 59 remaining) [2024-10-31 22:09:58,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 59 remaining) [2024-10-31 22:09:58,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 59 remaining) [2024-10-31 22:09:58,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 59 remaining) [2024-10-31 22:09:58,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 59 remaining) [2024-10-31 22:09:58,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 59 remaining) [2024-10-31 22:09:58,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 59 remaining) [2024-10-31 22:09:58,645 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 59 remaining) [2024-10-31 22:09:58,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 59 remaining) [2024-10-31 22:09:58,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 59 remaining) [2024-10-31 22:09:58,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 59 remaining) [2024-10-31 22:09:58,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (19 of 59 remaining) [2024-10-31 22:09:58,648 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 59 remaining) [2024-10-31 22:09:58,648 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 59 remaining) [2024-10-31 22:09:58,648 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 59 remaining) [2024-10-31 22:09:58,648 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 59 remaining) [2024-10-31 22:09:58,648 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 59 remaining) [2024-10-31 22:09:58,648 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 59 remaining) [2024-10-31 22:09:58,648 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (12 of 59 remaining) [2024-10-31 22:09:58,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (11 of 59 remaining) [2024-10-31 22:09:58,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 59 remaining) [2024-10-31 22:09:58,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 59 remaining) [2024-10-31 22:09:58,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 59 remaining) [2024-10-31 22:09:58,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 59 remaining) [2024-10-31 22:09:58,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 59 remaining) [2024-10-31 22:09:58,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 59 remaining) [2024-10-31 22:09:58,650 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 59 remaining) [2024-10-31 22:09:58,651 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 59 remaining) [2024-10-31 22:09:58,652 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 59 remaining) [2024-10-31 22:09:58,652 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 59 remaining) [2024-10-31 22:09:58,652 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (0 of 59 remaining) [2024-10-31 22:09:58,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:09:58,653 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-31 22:09:58,653 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:09:58,654 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-31 22:09:58,749 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:09:58,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 217 transitions, 452 flow [2024-10-31 22:09:58,796 INFO L124 PetriNetUnfolderBase]: 39/231 cut-off events. [2024-10-31 22:09:58,796 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-31 22:09:58,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 231 events. 39/231 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1073 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 212. Up to 4 conditions per place. [2024-10-31 22:09:58,799 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 217 transitions, 452 flow [2024-10-31 22:09:58,807 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 217 transitions, 452 flow [2024-10-31 22:09:58,808 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:09:58,812 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@5da9e2e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:09:58,812 INFO L334 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2024-10-31 22:09:58,814 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:09:58,814 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-31 22:09:58,814 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:09:58,814 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:09:58,814 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:09:58,816 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2024-10-31 22:09:58,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:58,817 INFO L85 PathProgramCache]: Analyzing trace with hash 857555, now seen corresponding path program 1 times [2024-10-31 22:09:58,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:58,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329431877] [2024-10-31 22:09:58,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:58,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:58,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:58,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:58,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329431877] [2024-10-31 22:09:58,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329431877] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:58,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:58,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:09:58,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390482811] [2024-10-31 22:09:58,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:58,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:09:58,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:58,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:09:58,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:09:58,844 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 217 [2024-10-31 22:09:58,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 217 transitions, 452 flow. Second operand has 2 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:58,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:09:58,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 217 [2024-10-31 22:09:58,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand