./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/01b_inc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bacc9f6-0637-44f3-8cf4-679877faaad5/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bacc9f6-0637-44f3-8cf4-679877faaad5/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bacc9f6-0637-44f3-8cf4-679877faaad5/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bacc9f6-0637-44f3-8cf4-679877faaad5/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/01b_inc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bacc9f6-0637-44f3-8cf4-679877faaad5/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bacc9f6-0637-44f3-8cf4-679877faaad5/bin/uautomizer-verify-aQ6SnzHsRB --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 f8560a665e9f795d0e42a91570dfb6029ba2a9fa9f17754a8891b62ccadb5cdc --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:15:13,607 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:15:13,713 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bacc9f6-0637-44f3-8cf4-679877faaad5/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 03:15:13,718 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:15:13,718 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:15:13,742 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:15:13,742 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:15:13,742 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:15:13,743 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:15:13,743 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:15:13,743 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:15:13,743 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:15:13,744 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:15:13,744 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:15:13,744 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:15:13,744 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:15:13,744 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:15:13,745 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:15:13,745 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:15:13,745 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:15:13,745 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 03:15:13,745 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 03:15:13,745 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 03:15:13,745 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:15:13,746 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:15:13,746 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:15:13,746 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:15:13,746 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:15:13,746 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:15:13,746 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:15:13,746 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:15:13,747 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:15:13,747 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:15:13,747 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:15:13,747 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:15:13,747 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:15:13,747 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:15:13,748 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:15:13,748 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:15:13,748 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:15:13,748 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:15:13,748 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:15:13,748 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:15:13,748 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:15:13,749 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:15:13,749 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:15:13,749 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:15:13,749 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_3bacc9f6-0637-44f3-8cf4-679877faaad5/bin/uautomizer-verify-aQ6SnzHsRB 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 -> f8560a665e9f795d0e42a91570dfb6029ba2a9fa9f17754a8891b62ccadb5cdc [2024-11-28 03:15:14,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:15:14,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:15:14,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:15:14,059 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:15:14,059 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:15:14,061 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bacc9f6-0637-44f3-8cf4-679877faaad5/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-ext/01b_inc.i [2024-11-28 03:15:17,558 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bacc9f6-0637-44f3-8cf4-679877faaad5/bin/uautomizer-verify-aQ6SnzHsRB/data/027c88f46/af1a8f60d63f418bb25a07280cbbcedb/FLAGae1d7f186 [2024-11-28 03:15:18,033 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:15:18,034 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bacc9f6-0637-44f3-8cf4-679877faaad5/sv-benchmarks/c/pthread-ext/01b_inc.i [2024-11-28 03:15:18,057 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bacc9f6-0637-44f3-8cf4-679877faaad5/bin/uautomizer-verify-aQ6SnzHsRB/data/027c88f46/af1a8f60d63f418bb25a07280cbbcedb/FLAGae1d7f186 [2024-11-28 03:15:18,084 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bacc9f6-0637-44f3-8cf4-679877faaad5/bin/uautomizer-verify-aQ6SnzHsRB/data/027c88f46/af1a8f60d63f418bb25a07280cbbcedb [2024-11-28 03:15:18,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:15:18,091 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:15:18,093 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:15:18,095 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:15:18,101 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:15:18,102 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:15:18" (1/1) ... [2024-11-28 03:15:18,106 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@154fd34b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:18, skipping insertion in model container [2024-11-28 03:15:18,106 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:15:18" (1/1) ... [2024-11-28 03:15:18,155 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:15:18,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:15:18,672 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:15:18,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:15:18,808 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:15:18,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:18 WrapperNode [2024-11-28 03:15:18,810 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:15:18,811 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:15:18,811 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:15:18,811 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:15:18,826 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:18" (1/1) ... [2024-11-28 03:15:18,838 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:18" (1/1) ... [2024-11-28 03:15:18,860 INFO L138 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2024-11-28 03:15:18,860 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:15:18,861 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:15:18,861 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:15:18,862 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:15:18,873 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:18" (1/1) ... [2024-11-28 03:15:18,873 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:18" (1/1) ... [2024-11-28 03:15:18,876 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:18" (1/1) ... [2024-11-28 03:15:18,891 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-11-28 03:15:18,891 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:18" (1/1) ... [2024-11-28 03:15:18,892 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:18" (1/1) ... [2024-11-28 03:15:18,898 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:18" (1/1) ... [2024-11-28 03:15:18,899 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:18" (1/1) ... [2024-11-28 03:15:18,903 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:18" (1/1) ... [2024-11-28 03:15:18,908 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:18" (1/1) ... [2024-11-28 03:15:18,909 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:18" (1/1) ... [2024-11-28 03:15:18,912 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:15:18,913 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:15:18,913 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:15:18,913 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:15:18,918 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:18" (1/1) ... [2024-11-28 03:15:18,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:15:18,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bacc9f6-0637-44f3-8cf4-679877faaad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:15:18,972 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bacc9f6-0637-44f3-8cf4-679877faaad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:15:18,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bacc9f6-0637-44f3-8cf4-679877faaad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:15:18,999 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-28 03:15:19,000 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-28 03:15:19,000 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 03:15:19,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 03:15:19,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:15:19,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:15:19,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:15:19,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 03:15:19,001 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 03:15:19,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:15:19,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:15:19,002 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 03:15:19,194 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:15:19,196 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:15:19,370 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 03:15:19,370 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:15:19,559 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:15:19,559 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:15:19,560 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:15:19 BoogieIcfgContainer [2024-11-28 03:15:19,560 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:15:19,563 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:15:19,563 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:15:19,570 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:15:19,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:15:18" (1/3) ... [2024-11-28 03:15:19,571 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fa2be88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:15:19, skipping insertion in model container [2024-11-28 03:15:19,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:18" (2/3) ... [2024-11-28 03:15:19,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fa2be88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:15:19, skipping insertion in model container [2024-11-28 03:15:19,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:15:19" (3/3) ... [2024-11-28 03:15:19,574 INFO L128 eAbstractionObserver]: Analyzing ICFG 01b_inc.i [2024-11-28 03:15:19,595 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:15:19,597 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 01b_inc.i that has 2 procedures, 21 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2024-11-28 03:15:19,598 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 03:15:19,670 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 03:15:19,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 24 places, 22 transitions, 48 flow [2024-11-28 03:15:19,777 INFO L124 PetriNetUnfolderBase]: 1/26 cut-off events. [2024-11-28 03:15:19,785 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:15:19,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 26 events. 1/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 19. Up to 2 conditions per place. [2024-11-28 03:15:19,789 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 22 transitions, 48 flow [2024-11-28 03:15:19,793 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 22 transitions, 48 flow [2024-11-28 03:15:19,801 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:15:19,817 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;@4b8ddc70, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:15:19,817 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-28 03:15:19,822 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:15:19,823 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 03:15:19,823 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:15:19,823 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:15:19,824 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 03:15:19,824 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:15:19,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:19,833 INFO L85 PathProgramCache]: Analyzing trace with hash 173366, now seen corresponding path program 1 times [2024-11-28 03:15:19,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:19,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754259419] [2024-11-28 03:15:19,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:19,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:19,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:20,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:15:20,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:20,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754259419] [2024-11-28 03:15:20,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754259419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:20,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:20,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:15:20,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8179037] [2024-11-28 03:15:20,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:20,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:15:20,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:20,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:15:20,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:15:20,121 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 22 [2024-11-28 03:15:20,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 22 transitions, 48 flow. Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:20,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:15:20,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 22 [2024-11-28 03:15:20,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:15:20,217 INFO L124 PetriNetUnfolderBase]: 19/65 cut-off events. [2024-11-28 03:15:20,219 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:15:20,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 65 events. 19/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 171 event pairs, 16 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 102. Up to 46 conditions per place. [2024-11-28 03:15:20,222 INFO L140 encePairwiseOnDemand]: 21/22 looper letters, 12 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2024-11-28 03:15:20,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 19 transitions, 66 flow [2024-11-28 03:15:20,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:15:20,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-28 03:15:20,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 29 transitions. [2024-11-28 03:15:20,242 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2024-11-28 03:15:20,244 INFO L175 Difference]: Start difference. First operand has 24 places, 22 transitions, 48 flow. Second operand 2 states and 29 transitions. [2024-11-28 03:15:20,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 19 transitions, 66 flow [2024-11-28 03:15:20,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 19 transitions, 66 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:15:20,252 INFO L231 Difference]: Finished difference. Result has 22 places, 19 transitions, 42 flow [2024-11-28 03:15:20,255 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=22, PETRI_TRANSITIONS=19} [2024-11-28 03:15:20,260 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, -2 predicate places. [2024-11-28 03:15:20,260 INFO L471 AbstractCegarLoop]: Abstraction has has 22 places, 19 transitions, 42 flow [2024-11-28 03:15:20,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:20,261 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:15:20,261 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-28 03:15:20,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:15:20,262 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:15:20,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:20,267 INFO L85 PathProgramCache]: Analyzing trace with hash 869868005, now seen corresponding path program 1 times [2024-11-28 03:15:20,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:20,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702808105] [2024-11-28 03:15:20,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:20,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:15:20,327 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:15:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:15:20,373 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 03:15:20,373 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:15:20,375 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-28 03:15:20,378 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-28 03:15:20,379 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-28 03:15:20,379 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2024-11-28 03:15:20,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:15:20,382 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 03:15:20,386 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 03:15:20,386 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 03:15:20,431 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 03:15:20,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 37 transitions, 84 flow [2024-11-28 03:15:20,459 INFO L124 PetriNetUnfolderBase]: 2/46 cut-off events. [2024-11-28 03:15:20,462 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 03:15:20,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 46 events. 2/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 114 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 33. Up to 3 conditions per place. [2024-11-28 03:15:20,464 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 37 transitions, 84 flow [2024-11-28 03:15:20,465 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 37 transitions, 84 flow [2024-11-28 03:15:20,467 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:15:20,469 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;@4b8ddc70, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:15:20,469 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-28 03:15:20,476 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:15:20,476 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 03:15:20,476 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:15:20,476 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:15:20,476 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 03:15:20,476 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 03:15:20,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:20,477 INFO L85 PathProgramCache]: Analyzing trace with hash 210107, now seen corresponding path program 1 times [2024-11-28 03:15:20,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:20,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137591956] [2024-11-28 03:15:20,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:20,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:20,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:15:20,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:20,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137591956] [2024-11-28 03:15:20,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137591956] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:20,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:20,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:15:20,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440702428] [2024-11-28 03:15:20,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:20,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:15:20,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:20,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:15:20,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:15:20,530 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-11-28 03:15:20,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 84 flow. Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:20,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:15:20,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-11-28 03:15:20,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:15:20,813 INFO L124 PetriNetUnfolderBase]: 403/845 cut-off events. [2024-11-28 03:15:20,817 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-28 03:15:20,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1526 conditions, 845 events. 403/845 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4915 event pairs, 376 based on Foata normal form. 0/773 useless extension candidates. Maximal degree in co-relation 267. Up to 649 conditions per place. [2024-11-28 03:15:20,832 INFO L140 encePairwiseOnDemand]: 36/37 looper letters, 21 selfloop transitions, 0 changer transitions 0/34 dead transitions. [2024-11-28 03:15:20,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 34 transitions, 120 flow [2024-11-28 03:15:20,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:15:20,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-28 03:15:20,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 50 transitions. [2024-11-28 03:15:20,834 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6756756756756757 [2024-11-28 03:15:20,834 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 84 flow. Second operand 2 states and 50 transitions. [2024-11-28 03:15:20,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 34 transitions, 120 flow [2024-11-28 03:15:20,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 34 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:15:20,838 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 78 flow [2024-11-28 03:15:20,838 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=78, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-11-28 03:15:20,839 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-11-28 03:15:20,839 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 78 flow [2024-11-28 03:15:20,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:20,839 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:15:20,840 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-28 03:15:20,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:15:20,841 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 03:15:20,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:20,841 INFO L85 PathProgramCache]: Analyzing trace with hash -578532155, now seen corresponding path program 1 times [2024-11-28 03:15:20,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:20,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730831590] [2024-11-28 03:15:20,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:20,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:20,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:15:20,877 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:15:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:15:20,916 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 03:15:20,916 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:15:20,917 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-28 03:15:20,917 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-28 03:15:20,917 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-11-28 03:15:20,917 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-11-28 03:15:20,917 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-28 03:15:20,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:15:20,918 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 03:15:20,918 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 03:15:20,918 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-28 03:15:20,970 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 03:15:20,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 52 transitions, 122 flow [2024-11-28 03:15:20,993 INFO L124 PetriNetUnfolderBase]: 3/66 cut-off events. [2024-11-28 03:15:20,993 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-28 03:15:20,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 66 events. 3/66 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 203 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 53. Up to 4 conditions per place. [2024-11-28 03:15:20,994 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 52 transitions, 122 flow [2024-11-28 03:15:20,995 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 52 transitions, 122 flow [2024-11-28 03:15:20,997 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:15:21,001 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;@4b8ddc70, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:15:21,002 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-28 03:15:21,004 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:15:21,004 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 03:15:21,004 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:15:21,004 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:15:21,004 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 03:15:21,004 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-28 03:15:21,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:21,005 INFO L85 PathProgramCache]: Analyzing trace with hash 261743, now seen corresponding path program 1 times [2024-11-28 03:15:21,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:21,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152062881] [2024-11-28 03:15:21,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:21,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:21,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:15:21,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:21,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152062881] [2024-11-28 03:15:21,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152062881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:21,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:21,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:15:21,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728412601] [2024-11-28 03:15:21,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:21,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:15:21,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:21,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:15:21,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:15:21,050 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 52 [2024-11-28 03:15:21,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 122 flow. Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:21,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:15:21,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 52 [2024-11-28 03:15:21,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:15:22,780 INFO L124 PetriNetUnfolderBase]: 5803/9835 cut-off events. [2024-11-28 03:15:22,780 INFO L125 PetriNetUnfolderBase]: For 677/677 co-relation queries the response was YES. [2024-11-28 03:15:22,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18212 conditions, 9835 events. 5803/9835 cut-off events. For 677/677 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 74256 event pairs, 5560 based on Foata normal form. 0/8904 useless extension candidates. Maximal degree in co-relation 1532. Up to 8020 conditions per place. [2024-11-28 03:15:22,874 INFO L140 encePairwiseOnDemand]: 51/52 looper letters, 30 selfloop transitions, 0 changer transitions 0/49 dead transitions. [2024-11-28 03:15:22,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 49 transitions, 176 flow [2024-11-28 03:15:22,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:15:22,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-28 03:15:22,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 71 transitions. [2024-11-28 03:15:22,877 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6826923076923077 [2024-11-28 03:15:22,877 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 122 flow. Second operand 2 states and 71 transitions. [2024-11-28 03:15:22,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 49 transitions, 176 flow [2024-11-28 03:15:22,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 49 transitions, 174 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-28 03:15:22,882 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 114 flow [2024-11-28 03:15:22,884 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=114, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2024-11-28 03:15:22,885 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2024-11-28 03:15:22,886 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 114 flow [2024-11-28 03:15:22,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:22,887 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:15:22,887 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:15:22,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:15:22,887 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-28 03:15:22,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:22,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1332332273, now seen corresponding path program 1 times [2024-11-28 03:15:22,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:22,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824745915] [2024-11-28 03:15:22,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:22,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:23,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:15:23,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:23,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824745915] [2024-11-28 03:15:23,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824745915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:23,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:23,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:15:23,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886593593] [2024-11-28 03:15:23,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:23,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:15:23,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:23,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:15:23,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:15:23,305 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-11-28 03:15:23,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:23,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:15:23,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-11-28 03:15:23,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:15:25,945 INFO L124 PetriNetUnfolderBase]: 11367/19191 cut-off events. [2024-11-28 03:15:25,946 INFO L125 PetriNetUnfolderBase]: For 368/368 co-relation queries the response was YES. [2024-11-28 03:15:25,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35824 conditions, 19191 events. 11367/19191 cut-off events. For 368/368 co-relation queries the response was YES. Maximal size of possible extension queue 1116. Compared 155979 event pairs, 3351 based on Foata normal form. 0/16604 useless extension candidates. Maximal degree in co-relation 35818. Up to 7422 conditions per place. [2024-11-28 03:15:26,089 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 104 selfloop transitions, 12 changer transitions 0/129 dead transitions. [2024-11-28 03:15:26,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 129 transitions, 536 flow [2024-11-28 03:15:26,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:15:26,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 03:15:26,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2024-11-28 03:15:26,096 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6602564102564102 [2024-11-28 03:15:26,096 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 114 flow. Second operand 6 states and 206 transitions. [2024-11-28 03:15:26,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 129 transitions, 536 flow [2024-11-28 03:15:26,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 129 transitions, 536 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:15:26,104 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 205 flow [2024-11-28 03:15:26,105 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=205, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2024-11-28 03:15:26,106 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-11-28 03:15:26,107 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 205 flow [2024-11-28 03:15:26,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:26,108 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:15:26,108 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-28 03:15:26,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:15:26,108 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-28 03:15:26,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:26,110 INFO L85 PathProgramCache]: Analyzing trace with hash 655721188, now seen corresponding path program 1 times [2024-11-28 03:15:26,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:26,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727658558] [2024-11-28 03:15:26,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:26,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:15:26,136 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:15:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:15:26,167 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 03:15:26,167 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:15:26,170 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-28 03:15:26,170 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-28 03:15:26,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-11-28 03:15:26,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2024-11-28 03:15:26,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-11-28 03:15:26,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-11-28 03:15:26,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:15:26,171 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-28 03:15:26,172 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 03:15:26,172 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-28 03:15:26,235 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 03:15:26,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 67 transitions, 162 flow [2024-11-28 03:15:26,248 INFO L124 PetriNetUnfolderBase]: 4/86 cut-off events. [2024-11-28 03:15:26,249 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-28 03:15:26,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 86 events. 4/86 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 289 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 78. Up to 5 conditions per place. [2024-11-28 03:15:26,250 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 67 transitions, 162 flow [2024-11-28 03:15:26,251 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 67 transitions, 162 flow [2024-11-28 03:15:26,252 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:15:26,255 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;@4b8ddc70, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:15:26,255 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-28 03:15:26,257 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:15:26,257 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 03:15:26,258 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:15:26,258 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:15:26,258 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 03:15:26,258 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 03:15:26,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:26,259 INFO L85 PathProgramCache]: Analyzing trace with hash 328274, now seen corresponding path program 1 times [2024-11-28 03:15:26,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:26,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335603456] [2024-11-28 03:15:26,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:26,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:26,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:15:26,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:26,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335603456] [2024-11-28 03:15:26,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335603456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:26,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:26,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:15:26,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122795544] [2024-11-28 03:15:26,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:26,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:15:26,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:26,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:15:26,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:15:26,287 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 67 [2024-11-28 03:15:26,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 67 transitions, 162 flow. Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:26,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:15:26,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 67 [2024-11-28 03:15:26,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:15:35,589 INFO L124 PetriNetUnfolderBase]: 71899/108249 cut-off events. [2024-11-28 03:15:35,589 INFO L125 PetriNetUnfolderBase]: For 10977/10977 co-relation queries the response was YES. [2024-11-28 03:15:35,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204107 conditions, 108249 events. 71899/108249 cut-off events. For 10977/10977 co-relation queries the response was YES. Maximal size of possible extension queue 4329. Compared 925008 event pairs, 69712 based on Foata normal form. 0/97400 useless extension candidates. Maximal degree in co-relation 18298. Up to 91855 conditions per place. [2024-11-28 03:15:36,504 INFO L140 encePairwiseOnDemand]: 66/67 looper letters, 39 selfloop transitions, 0 changer transitions 0/64 dead transitions. [2024-11-28 03:15:36,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 64 transitions, 234 flow [2024-11-28 03:15:36,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:15:36,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-28 03:15:36,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 92 transitions. [2024-11-28 03:15:36,511 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6865671641791045 [2024-11-28 03:15:36,512 INFO L175 Difference]: Start difference. First operand has 72 places, 67 transitions, 162 flow. Second operand 2 states and 92 transitions. [2024-11-28 03:15:36,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 64 transitions, 234 flow [2024-11-28 03:15:36,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 64 transitions, 228 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-28 03:15:36,538 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 150 flow [2024-11-28 03:15:36,539 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=150, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2024-11-28 03:15:36,540 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, -2 predicate places. [2024-11-28 03:15:36,541 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 150 flow [2024-11-28 03:15:36,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:36,541 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:15:36,543 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:15:36,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:15:36,543 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 03:15:36,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:36,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1422084992, now seen corresponding path program 1 times [2024-11-28 03:15:36,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:36,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308129539] [2024-11-28 03:15:36,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:36,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:36,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:15:36,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:36,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308129539] [2024-11-28 03:15:36,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308129539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:36,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:36,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:15:36,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977148083] [2024-11-28 03:15:36,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:36,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:15:36,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:36,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:15:36,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:15:36,859 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 67 [2024-11-28 03:15:36,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:36,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:15:36,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 67 [2024-11-28 03:15:36,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:15:58,745 INFO L124 PetriNetUnfolderBase]: 207509/303575 cut-off events. [2024-11-28 03:15:58,745 INFO L125 PetriNetUnfolderBase]: For 5181/5181 co-relation queries the response was YES. [2024-11-28 03:15:59,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 576711 conditions, 303575 events. 207509/303575 cut-off events. For 5181/5181 co-relation queries the response was YES. Maximal size of possible extension queue 12236. Compared 2716252 event pairs, 70926 based on Foata normal form. 0/257763 useless extension candidates. Maximal degree in co-relation 576704. Up to 133343 conditions per place. [2024-11-28 03:16:00,909 INFO L140 encePairwiseOnDemand]: 55/67 looper letters, 144 selfloop transitions, 15 changer transitions 0/176 dead transitions. [2024-11-28 03:16:00,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 176 transitions, 742 flow [2024-11-28 03:16:00,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:16:00,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 03:16:00,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 275 transitions. [2024-11-28 03:16:00,914 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6840796019900498 [2024-11-28 03:16:00,914 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 150 flow. Second operand 6 states and 275 transitions. [2024-11-28 03:16:00,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 176 transitions, 742 flow [2024-11-28 03:16:00,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 176 transitions, 742 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:16:00,926 INFO L231 Difference]: Finished difference. Result has 79 places, 80 transitions, 268 flow [2024-11-28 03:16:00,927 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=268, PETRI_PLACES=79, PETRI_TRANSITIONS=80} [2024-11-28 03:16:00,927 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 7 predicate places. [2024-11-28 03:16:00,928 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 80 transitions, 268 flow [2024-11-28 03:16:00,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:00,928 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:16:00,928 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:00,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 03:16:00,928 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 03:16:00,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:00,929 INFO L85 PathProgramCache]: Analyzing trace with hash 346877997, now seen corresponding path program 1 times [2024-11-28 03:16:00,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:00,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326850881] [2024-11-28 03:16:00,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:00,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:01,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:16:01,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:01,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326850881] [2024-11-28 03:16:01,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326850881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:01,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:01,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:16:01,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474929508] [2024-11-28 03:16:01,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:01,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:16:01,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:01,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:16:01,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:16:01,185 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 67 [2024-11-28 03:16:01,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 80 transitions, 268 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:01,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:16:01,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 67 [2024-11-28 03:16:01,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand