./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b 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_110dd8d1-fe30-48e6-8e83-bd04456e5456/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_110dd8d1-fe30-48e6-8e83-bd04456e5456/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_110dd8d1-fe30-48e6-8e83-bd04456e5456/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_110dd8d1-fe30-48e6-8e83-bd04456e5456/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_110dd8d1-fe30-48e6-8e83-bd04456e5456/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_110dd8d1-fe30-48e6-8e83-bd04456e5456/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a75df8feda97f2ebeb5cc4266066f8deba1b6726a771b6143f22a640cfcf63d2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:19:14,620 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:19:14,704 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_110dd8d1-fe30-48e6-8e83-bd04456e5456/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:19:14,710 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:19:14,711 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:19:14,740 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:19:14,741 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:19:14,742 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:19:14,743 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:19:14,743 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:19:14,744 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:19:14,745 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:19:14,745 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:19:14,746 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:19:14,747 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:19:14,747 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:19:14,748 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:19:14,748 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:19:14,749 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:19:14,750 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:19:14,750 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:19:14,751 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:19:14,752 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:19:14,752 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:19:14,753 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:19:14,753 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:19:14,754 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:19:14,755 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:19:14,755 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:19:14,756 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:19:14,756 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:19:14,757 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:19:14,757 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:19:14,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:19:14,758 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:19:14,759 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:19:14,759 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:19:14,760 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:19:14,760 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_110dd8d1-fe30-48e6-8e83-bd04456e5456/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_110dd8d1-fe30-48e6-8e83-bd04456e5456/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a75df8feda97f2ebeb5cc4266066f8deba1b6726a771b6143f22a640cfcf63d2 [2023-11-06 22:19:15,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:19:15,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:19:15,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:19:15,064 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:19:15,065 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:19:15,066 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_110dd8d1-fe30-48e6-8e83-bd04456e5456/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i [2023-11-06 22:19:18,453 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:19:18,774 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:19:18,775 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_110dd8d1-fe30-48e6-8e83-bd04456e5456/sv-benchmarks/c/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i [2023-11-06 22:19:18,798 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_110dd8d1-fe30-48e6-8e83-bd04456e5456/bin/uautomizer-verify-WvqO1wxjHP/data/35bc95246/091588543ab04fc6bae2767bf6394540/FLAGb854d8c54 [2023-11-06 22:19:18,815 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_110dd8d1-fe30-48e6-8e83-bd04456e5456/bin/uautomizer-verify-WvqO1wxjHP/data/35bc95246/091588543ab04fc6bae2767bf6394540 [2023-11-06 22:19:18,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:19:18,825 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:19:18,827 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:19:18,827 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:19:18,832 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:19:18,833 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:19:18" (1/1) ... [2023-11-06 22:19:18,835 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ccf785f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:18, skipping insertion in model container [2023-11-06 22:19:18,835 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:19:18" (1/1) ... [2023-11-06 22:19:18,903 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:19:19,412 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:19:19,428 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:19:19,504 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:19:19,545 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:19:19,545 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:19:19,554 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:19:19,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:19 WrapperNode [2023-11-06 22:19:19,555 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:19:19,556 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:19:19,556 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:19:19,557 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:19:19,565 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:19" (1/1) ... [2023-11-06 22:19:19,585 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:19" (1/1) ... [2023-11-06 22:19:19,627 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 151 [2023-11-06 22:19:19,628 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:19:19,629 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:19:19,629 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:19:19,629 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:19:19,640 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:19" (1/1) ... [2023-11-06 22:19:19,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:19" (1/1) ... [2023-11-06 22:19:19,646 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:19" (1/1) ... [2023-11-06 22:19:19,647 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:19" (1/1) ... [2023-11-06 22:19:19,660 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:19" (1/1) ... [2023-11-06 22:19:19,662 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:19" (1/1) ... [2023-11-06 22:19:19,666 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:19" (1/1) ... [2023-11-06 22:19:19,669 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:19" (1/1) ... [2023-11-06 22:19:19,675 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:19:19,676 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:19:19,676 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:19:19,676 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:19:19,677 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:19" (1/1) ... [2023-11-06 22:19:19,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:19:19,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_110dd8d1-fe30-48e6-8e83-bd04456e5456/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:19:19,718 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_110dd8d1-fe30-48e6-8e83-bd04456e5456/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:19:19,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_110dd8d1-fe30-48e6-8e83-bd04456e5456/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:19:19,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:19:19,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:19:19,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:19:19,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:19:19,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:19:19,788 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 22:19:19,788 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 22:19:19,788 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 22:19:19,790 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 22:19:19,790 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-06 22:19:19,790 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-06 22:19:19,791 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-06 22:19:19,791 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-06 22:19:19,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:19:19,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:19:19,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:19:19,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:19:19,796 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:19:20,006 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:19:20,008 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:19:20,460 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:19:20,663 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:19:20,664 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:19:20,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:19:20 BoogieIcfgContainer [2023-11-06 22:19:20,668 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:19:20,673 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:19:20,674 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:19:20,677 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:19:20,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:19:18" (1/3) ... [2023-11-06 22:19:20,679 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3202147e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:19:20, skipping insertion in model container [2023-11-06 22:19:20,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:19" (2/3) ... [2023-11-06 22:19:20,682 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3202147e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:19:20, skipping insertion in model container [2023-11-06 22:19:20,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:19:20" (3/3) ... [2023-11-06 22:19:20,684 INFO L112 eAbstractionObserver]: Analyzing ICFG mix014_power.oepc_pso.oepc_rmo.oepc.i [2023-11-06 22:19:20,711 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:19:20,712 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-06 22:19:20,712 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:19:20,823 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:19:20,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 153 transitions, 322 flow [2023-11-06 22:19:21,010 INFO L124 PetriNetUnfolderBase]: 3/149 cut-off events. [2023-11-06 22:19:21,011 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:19:21,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 149 events. 3/149 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 122 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2023-11-06 22:19:21,019 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 153 transitions, 322 flow [2023-11-06 22:19:21,040 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 149 transitions, 310 flow [2023-11-06 22:19:21,047 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:19:21,068 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 149 transitions, 310 flow [2023-11-06 22:19:21,071 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 149 transitions, 310 flow [2023-11-06 22:19:21,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 149 transitions, 310 flow [2023-11-06 22:19:21,147 INFO L124 PetriNetUnfolderBase]: 3/149 cut-off events. [2023-11-06 22:19:21,148 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:19:21,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 149 events. 3/149 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 122 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2023-11-06 22:19:21,157 INFO L119 LiptonReduction]: Number of co-enabled transitions 4232 [2023-11-06 22:19:28,079 INFO L134 LiptonReduction]: Checked pairs total: 12259 [2023-11-06 22:19:28,079 INFO L136 LiptonReduction]: Total number of compositions: 145 [2023-11-06 22:19:28,107 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:19:28,116 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1be40559, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:19:28,117 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-06 22:19:28,118 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:19:28,118 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:19:28,119 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:19:28,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:19:28,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:19:28,120 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:19:28,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:28,127 INFO L85 PathProgramCache]: Analyzing trace with hash 660, now seen corresponding path program 1 times [2023-11-06 22:19:28,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:28,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198800495] [2023-11-06 22:19:28,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:28,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:28,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:28,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:28,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198800495] [2023-11-06 22:19:28,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198800495] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:28,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:28,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:19:28,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488511733] [2023-11-06 22:19:28,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:28,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:19:28,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:28,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:19:28,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:19:28,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 298 [2023-11-06 22:19:28,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 96 flow. Second operand has 2 states, 2 states have (on average 137.5) internal successors, (275), 2 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:28,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:19:28,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 298 [2023-11-06 22:19:28,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:19:30,780 INFO L124 PetriNetUnfolderBase]: 8719/11822 cut-off events. [2023-11-06 22:19:30,780 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2023-11-06 22:19:30,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23770 conditions, 11822 events. 8719/11822 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 63430 event pairs, 8719 based on Foata normal form. 0/10329 useless extension candidates. Maximal degree in co-relation 23758. Up to 11731 conditions per place. [2023-11-06 22:19:30,929 INFO L140 encePairwiseOnDemand]: 289/298 looper letters, 28 selfloop transitions, 0 changer transitions 0/33 dead transitions. [2023-11-06 22:19:30,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 33 transitions, 134 flow [2023-11-06 22:19:30,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:19:30,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:19:30,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 311 transitions. [2023-11-06 22:19:30,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5218120805369127 [2023-11-06 22:19:30,957 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 311 transitions. [2023-11-06 22:19:30,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 311 transitions. [2023-11-06 22:19:30,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:19:30,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 311 transitions. [2023-11-06 22:19:30,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 155.5) internal successors, (311), 2 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:30,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:30,978 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:30,980 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 2 states and 311 transitions. [2023-11-06 22:19:30,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 33 transitions, 134 flow [2023-11-06 22:19:30,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 33 transitions, 130 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:19:30,992 INFO L231 Difference]: Finished difference. Result has 43 places, 33 transitions, 74 flow [2023-11-06 22:19:30,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=74, PETRI_PLACES=43, PETRI_TRANSITIONS=33} [2023-11-06 22:19:31,000 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2023-11-06 22:19:31,000 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 74 flow [2023-11-06 22:19:31,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 137.5) internal successors, (275), 2 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:31,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:19:31,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:19:31,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:19:31,002 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:19:31,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:31,014 INFO L85 PathProgramCache]: Analyzing trace with hash 650612, now seen corresponding path program 1 times [2023-11-06 22:19:31,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:31,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491293827] [2023-11-06 22:19:31,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:31,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:31,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:31,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:31,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491293827] [2023-11-06 22:19:31,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491293827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:31,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:31,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:19:31,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737174097] [2023-11-06 22:19:31,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:31,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:19:31,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:31,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:19:31,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:19:31,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 298 [2023-11-06 22:19:31,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:31,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:19:31,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 298 [2023-11-06 22:19:31,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:19:33,367 INFO L124 PetriNetUnfolderBase]: 6855/9885 cut-off events. [2023-11-06 22:19:33,368 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:19:33,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19322 conditions, 9885 events. 6855/9885 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 62160 event pairs, 1263 based on Foata normal form. 0/9226 useless extension candidates. Maximal degree in co-relation 19319. Up to 7399 conditions per place. [2023-11-06 22:19:33,471 INFO L140 encePairwiseOnDemand]: 295/298 looper letters, 45 selfloop transitions, 2 changer transitions 2/54 dead transitions. [2023-11-06 22:19:33,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 220 flow [2023-11-06 22:19:33,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:19:33,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:19:33,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 458 transitions. [2023-11-06 22:19:33,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5123042505592841 [2023-11-06 22:19:33,477 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 458 transitions. [2023-11-06 22:19:33,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 458 transitions. [2023-11-06 22:19:33,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:19:33,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 458 transitions. [2023-11-06 22:19:33,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:33,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:33,495 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:33,496 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 74 flow. Second operand 3 states and 458 transitions. [2023-11-06 22:19:33,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 220 flow [2023-11-06 22:19:33,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 220 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:19:33,500 INFO L231 Difference]: Finished difference. Result has 44 places, 31 transitions, 74 flow [2023-11-06 22:19:33,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=44, PETRI_TRANSITIONS=31} [2023-11-06 22:19:33,503 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -10 predicate places. [2023-11-06 22:19:33,504 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 31 transitions, 74 flow [2023-11-06 22:19:33,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:33,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:19:33,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:33,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:19:33,515 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:19:33,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:33,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1221885127, now seen corresponding path program 1 times [2023-11-06 22:19:33,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:33,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691441567] [2023-11-06 22:19:33,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:33,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:34,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:34,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:34,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691441567] [2023-11-06 22:19:34,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691441567] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:34,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:34,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:19:34,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748601776] [2023-11-06 22:19:34,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:34,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:19:34,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:34,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:19:34,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:19:34,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 298 [2023-11-06 22:19:34,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 31 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:34,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:19:34,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 298 [2023-11-06 22:19:34,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:19:40,352 INFO L124 PetriNetUnfolderBase]: 31799/42324 cut-off events. [2023-11-06 22:19:40,352 INFO L125 PetriNetUnfolderBase]: For 1325/1325 co-relation queries the response was YES. [2023-11-06 22:19:40,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86549 conditions, 42324 events. 31799/42324 cut-off events. For 1325/1325 co-relation queries the response was YES. Maximal size of possible extension queue 1204. Compared 228658 event pairs, 10915 based on Foata normal form. 0/40916 useless extension candidates. Maximal degree in co-relation 86545. Up to 25951 conditions per place. [2023-11-06 22:19:40,612 INFO L140 encePairwiseOnDemand]: 287/298 looper letters, 78 selfloop transitions, 18 changer transitions 0/96 dead transitions. [2023-11-06 22:19:40,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 96 transitions, 406 flow [2023-11-06 22:19:40,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:19:40,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:19:40,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 698 transitions. [2023-11-06 22:19:40,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684563758389262 [2023-11-06 22:19:40,617 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 698 transitions. [2023-11-06 22:19:40,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 698 transitions. [2023-11-06 22:19:40,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:19:40,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 698 transitions. [2023-11-06 22:19:40,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.6) internal successors, (698), 5 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:40,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 298.0) internal successors, (1788), 6 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:40,628 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 298.0) internal successors, (1788), 6 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:40,628 INFO L175 Difference]: Start difference. First operand has 44 places, 31 transitions, 74 flow. Second operand 5 states and 698 transitions. [2023-11-06 22:19:40,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 96 transitions, 406 flow [2023-11-06 22:19:40,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 96 transitions, 396 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:19:40,634 INFO L231 Difference]: Finished difference. Result has 49 places, 48 transitions, 214 flow [2023-11-06 22:19:40,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=214, PETRI_PLACES=49, PETRI_TRANSITIONS=48} [2023-11-06 22:19:40,636 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2023-11-06 22:19:40,637 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 48 transitions, 214 flow [2023-11-06 22:19:40,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:40,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:19:40,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:40,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:19:40,645 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:19:40,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:40,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1221885110, now seen corresponding path program 1 times [2023-11-06 22:19:40,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:40,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026607789] [2023-11-06 22:19:40,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:40,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:41,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:41,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:41,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026607789] [2023-11-06 22:19:41,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026607789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:41,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:41,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:19:41,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115184523] [2023-11-06 22:19:41,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:41,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:19:41,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:41,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:19:41,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:19:41,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 298 [2023-11-06 22:19:41,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 119.71428571428571) internal successors, (838), 7 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:41,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:19:41,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 298 [2023-11-06 22:19:41,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:19:46,074 INFO L124 PetriNetUnfolderBase]: 19840/27933 cut-off events. [2023-11-06 22:19:46,075 INFO L125 PetriNetUnfolderBase]: For 16552/17748 co-relation queries the response was YES. [2023-11-06 22:19:46,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71725 conditions, 27933 events. 19840/27933 cut-off events. For 16552/17748 co-relation queries the response was YES. Maximal size of possible extension queue 1106. Compared 170008 event pairs, 4210 based on Foata normal form. 1396/28673 useless extension candidates. Maximal degree in co-relation 71718. Up to 18005 conditions per place. [2023-11-06 22:19:46,243 INFO L140 encePairwiseOnDemand]: 292/298 looper letters, 56 selfloop transitions, 6 changer transitions 10/80 dead transitions. [2023-11-06 22:19:46,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 80 transitions, 436 flow [2023-11-06 22:19:46,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:19:46,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:19:46,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 885 transitions. [2023-11-06 22:19:46,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4242569511025887 [2023-11-06 22:19:46,255 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 885 transitions. [2023-11-06 22:19:46,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 885 transitions. [2023-11-06 22:19:46,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:19:46,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 885 transitions. [2023-11-06 22:19:46,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 126.42857142857143) internal successors, (885), 7 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:46,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 298.0) internal successors, (2384), 8 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:46,266 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 298.0) internal successors, (2384), 8 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:46,266 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 214 flow. Second operand 7 states and 885 transitions. [2023-11-06 22:19:46,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 80 transitions, 436 flow [2023-11-06 22:19:46,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 80 transitions, 436 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:19:46,325 INFO L231 Difference]: Finished difference. Result has 54 places, 37 transitions, 160 flow [2023-11-06 22:19:46,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=160, PETRI_PLACES=54, PETRI_TRANSITIONS=37} [2023-11-06 22:19:46,327 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2023-11-06 22:19:46,327 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 37 transitions, 160 flow [2023-11-06 22:19:46,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 119.71428571428571) internal successors, (838), 7 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:46,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:19:46,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:46,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:19:46,329 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:19:46,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:46,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1709626978, now seen corresponding path program 1 times [2023-11-06 22:19:46,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:46,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054599873] [2023-11-06 22:19:46,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:46,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:46,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:46,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:46,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054599873] [2023-11-06 22:19:46,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054599873] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:46,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:46,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:19:46,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407725839] [2023-11-06 22:19:46,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:46,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:19:46,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:46,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:19:46,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:19:46,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 298 [2023-11-06 22:19:46,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 37 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 122.6) internal successors, (613), 5 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:46,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:19:46,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 298 [2023-11-06 22:19:46,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:19:50,904 INFO L124 PetriNetUnfolderBase]: 22479/30596 cut-off events. [2023-11-06 22:19:50,905 INFO L125 PetriNetUnfolderBase]: For 24082/24082 co-relation queries the response was YES. [2023-11-06 22:19:50,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83603 conditions, 30596 events. 22479/30596 cut-off events. For 24082/24082 co-relation queries the response was YES. Maximal size of possible extension queue 895. Compared 163129 event pairs, 5169 based on Foata normal form. 1344/31940 useless extension candidates. Maximal degree in co-relation 83595. Up to 13763 conditions per place. [2023-11-06 22:19:51,082 INFO L140 encePairwiseOnDemand]: 288/298 looper letters, 59 selfloop transitions, 9 changer transitions 51/119 dead transitions. [2023-11-06 22:19:51,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 119 transitions, 696 flow [2023-11-06 22:19:51,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:19:51,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:19:51,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 951 transitions. [2023-11-06 22:19:51,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45589645254074784 [2023-11-06 22:19:51,088 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 951 transitions. [2023-11-06 22:19:51,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 951 transitions. [2023-11-06 22:19:51,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:19:51,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 951 transitions. [2023-11-06 22:19:51,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.85714285714286) internal successors, (951), 7 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:51,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 298.0) internal successors, (2384), 8 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:51,104 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 298.0) internal successors, (2384), 8 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:51,104 INFO L175 Difference]: Start difference. First operand has 54 places, 37 transitions, 160 flow. Second operand 7 states and 951 transitions. [2023-11-06 22:19:51,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 119 transitions, 696 flow [2023-11-06 22:19:51,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 119 transitions, 630 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-11-06 22:19:51,399 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 216 flow [2023-11-06 22:19:51,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=216, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2023-11-06 22:19:51,401 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-11-06 22:19:51,401 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 216 flow [2023-11-06 22:19:51,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.6) internal successors, (613), 5 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:51,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:19:51,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:51,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:19:51,403 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:19:51,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:51,403 INFO L85 PathProgramCache]: Analyzing trace with hash -2087478532, now seen corresponding path program 1 times [2023-11-06 22:19:51,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:51,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184235353] [2023-11-06 22:19:51,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:51,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:51,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:51,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:51,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184235353] [2023-11-06 22:19:51,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184235353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:51,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:51,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:19:51,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118768712] [2023-11-06 22:19:51,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:51,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:19:51,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:51,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:19:51,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:19:51,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 298 [2023-11-06 22:19:51,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 216 flow. Second operand has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:51,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:19:51,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 298 [2023-11-06 22:19:51,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:19:55,297 INFO L124 PetriNetUnfolderBase]: 19511/26604 cut-off events. [2023-11-06 22:19:55,298 INFO L125 PetriNetUnfolderBase]: For 37059/37059 co-relation queries the response was YES. [2023-11-06 22:19:55,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77437 conditions, 26604 events. 19511/26604 cut-off events. For 37059/37059 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 143997 event pairs, 3497 based on Foata normal form. 960/27564 useless extension candidates. Maximal degree in co-relation 77425. Up to 12473 conditions per place. [2023-11-06 22:19:55,481 INFO L140 encePairwiseOnDemand]: 289/298 looper letters, 71 selfloop transitions, 12 changer transitions 44/127 dead transitions. [2023-11-06 22:19:55,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 127 transitions, 796 flow [2023-11-06 22:19:55,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:19:55,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:19:55,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 953 transitions. [2023-11-06 22:19:55,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45685522531160117 [2023-11-06 22:19:55,486 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 953 transitions. [2023-11-06 22:19:55,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 953 transitions. [2023-11-06 22:19:55,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:19:55,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 953 transitions. [2023-11-06 22:19:55,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:55,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 298.0) internal successors, (2384), 8 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:55,496 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 298.0) internal successors, (2384), 8 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:55,496 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 216 flow. Second operand 7 states and 953 transitions. [2023-11-06 22:19:55,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 127 transitions, 796 flow [2023-11-06 22:19:55,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 127 transitions, 777 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-06 22:19:55,929 INFO L231 Difference]: Finished difference. Result has 63 places, 48 transitions, 327 flow [2023-11-06 22:19:55,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=327, PETRI_PLACES=63, PETRI_TRANSITIONS=48} [2023-11-06 22:19:55,930 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2023-11-06 22:19:55,930 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 48 transitions, 327 flow [2023-11-06 22:19:55,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:55,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:19:55,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:55,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:19:55,931 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:19:55,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:55,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1475322184, now seen corresponding path program 1 times [2023-11-06 22:19:55,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:55,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352061041] [2023-11-06 22:19:55,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:55,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:56,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:56,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:56,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352061041] [2023-11-06 22:19:56,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352061041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:56,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:56,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:19:56,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11990746] [2023-11-06 22:19:56,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:56,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:19:56,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:56,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:19:56,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:19:56,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 298 [2023-11-06 22:19:56,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 48 transitions, 327 flow. Second operand has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:56,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:19:56,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 298 [2023-11-06 22:19:56,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:19:58,459 INFO L124 PetriNetUnfolderBase]: 10062/14925 cut-off events. [2023-11-06 22:19:58,459 INFO L125 PetriNetUnfolderBase]: For 15538/16781 co-relation queries the response was YES. [2023-11-06 22:19:58,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39601 conditions, 14925 events. 10062/14925 cut-off events. For 15538/16781 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 95326 event pairs, 2092 based on Foata normal form. 1219/15582 useless extension candidates. Maximal degree in co-relation 39585. Up to 6668 conditions per place. [2023-11-06 22:19:58,567 INFO L140 encePairwiseOnDemand]: 291/298 looper letters, 64 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2023-11-06 22:19:58,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 89 transitions, 635 flow [2023-11-06 22:19:58,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:19:58,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:19:58,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 580 transitions. [2023-11-06 22:19:58,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4865771812080537 [2023-11-06 22:19:58,572 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 580 transitions. [2023-11-06 22:19:58,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 580 transitions. [2023-11-06 22:19:58,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:19:58,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 580 transitions. [2023-11-06 22:19:58,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:58,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 298.0) internal successors, (1490), 5 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:58,579 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 298.0) internal successors, (1490), 5 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:58,579 INFO L175 Difference]: Start difference. First operand has 63 places, 48 transitions, 327 flow. Second operand 4 states and 580 transitions. [2023-11-06 22:19:58,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 89 transitions, 635 flow [2023-11-06 22:19:58,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 89 transitions, 607 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-11-06 22:19:58,707 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 349 flow [2023-11-06 22:19:58,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=349, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2023-11-06 22:19:58,709 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2023-11-06 22:19:58,710 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 349 flow [2023-11-06 22:19:58,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:58,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:19:58,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:58,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:19:58,711 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:19:58,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:58,711 INFO L85 PathProgramCache]: Analyzing trace with hash 219635426, now seen corresponding path program 1 times [2023-11-06 22:19:58,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:58,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515968261] [2023-11-06 22:19:58,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:58,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:59,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:59,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:59,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515968261] [2023-11-06 22:19:59,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515968261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:59,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:59,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:19:59,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558633316] [2023-11-06 22:19:59,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:59,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:19:59,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:59,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:19:59,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:19:59,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 298 [2023-11-06 22:19:59,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 349 flow. Second operand has 5 states, 5 states have (on average 133.2) internal successors, (666), 5 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:59,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:19:59,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 298 [2023-11-06 22:19:59,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:00,799 INFO L124 PetriNetUnfolderBase]: 7771/11948 cut-off events. [2023-11-06 22:20:00,799 INFO L125 PetriNetUnfolderBase]: For 13519/14750 co-relation queries the response was YES. [2023-11-06 22:20:00,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37312 conditions, 11948 events. 7771/11948 cut-off events. For 13519/14750 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 78236 event pairs, 1855 based on Foata normal form. 769/12286 useless extension candidates. Maximal degree in co-relation 37296. Up to 4397 conditions per place. [2023-11-06 22:20:00,872 INFO L140 encePairwiseOnDemand]: 291/298 looper letters, 82 selfloop transitions, 10 changer transitions 0/111 dead transitions. [2023-11-06 22:20:00,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 111 transitions, 792 flow [2023-11-06 22:20:00,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:20:00,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:20:00,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 728 transitions. [2023-11-06 22:20:00,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4885906040268456 [2023-11-06 22:20:00,879 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 728 transitions. [2023-11-06 22:20:00,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 728 transitions. [2023-11-06 22:20:00,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:00,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 728 transitions. [2023-11-06 22:20:00,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:00,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 298.0) internal successors, (1788), 6 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:00,887 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 298.0) internal successors, (1788), 6 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:00,887 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 349 flow. Second operand 5 states and 728 transitions. [2023-11-06 22:20:00,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 111 transitions, 792 flow [2023-11-06 22:20:00,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 111 transitions, 777 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-06 22:20:00,920 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 408 flow [2023-11-06 22:20:00,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=408, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2023-11-06 22:20:00,924 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 10 predicate places. [2023-11-06 22:20:00,924 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 408 flow [2023-11-06 22:20:00,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 133.2) internal successors, (666), 5 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:00,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:00,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:00,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:20:00,927 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:20:00,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:00,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1855008481, now seen corresponding path program 1 times [2023-11-06 22:20:00,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:00,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840520413] [2023-11-06 22:20:00,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:00,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:01,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:01,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:01,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840520413] [2023-11-06 22:20:01,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840520413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:01,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:01,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:20:01,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192119553] [2023-11-06 22:20:01,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:01,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:20:01,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:01,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:20:01,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:20:01,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 298 [2023-11-06 22:20:01,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 408 flow. Second operand has 6 states, 6 states have (on average 133.16666666666666) internal successors, (799), 6 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:01,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:01,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 298 [2023-11-06 22:20:01,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:03,211 INFO L124 PetriNetUnfolderBase]: 7101/10922 cut-off events. [2023-11-06 22:20:03,211 INFO L125 PetriNetUnfolderBase]: For 21090/22283 co-relation queries the response was YES. [2023-11-06 22:20:03,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38247 conditions, 10922 events. 7101/10922 cut-off events. For 21090/22283 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 71412 event pairs, 1771 based on Foata normal form. 296/10799 useless extension candidates. Maximal degree in co-relation 38231. Up to 4397 conditions per place. [2023-11-06 22:20:03,329 INFO L140 encePairwiseOnDemand]: 291/298 looper letters, 94 selfloop transitions, 14 changer transitions 0/127 dead transitions. [2023-11-06 22:20:03,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 127 transitions, 931 flow [2023-11-06 22:20:03,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:20:03,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:20:03,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 874 transitions. [2023-11-06 22:20:03,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888143176733781 [2023-11-06 22:20:03,335 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 874 transitions. [2023-11-06 22:20:03,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 874 transitions. [2023-11-06 22:20:03,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:03,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 874 transitions. [2023-11-06 22:20:03,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 145.66666666666666) internal successors, (874), 6 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:03,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 298.0) internal successors, (2086), 7 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:03,346 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 298.0) internal successors, (2086), 7 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:03,347 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 408 flow. Second operand 6 states and 874 transitions. [2023-11-06 22:20:03,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 127 transitions, 931 flow [2023-11-06 22:20:03,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 127 transitions, 915 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-06 22:20:03,395 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 478 flow [2023-11-06 22:20:03,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=478, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2023-11-06 22:20:03,396 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 15 predicate places. [2023-11-06 22:20:03,397 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 478 flow [2023-11-06 22:20:03,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 133.16666666666666) internal successors, (799), 6 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:03,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:03,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:03,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:20:03,398 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:20:03,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:03,399 INFO L85 PathProgramCache]: Analyzing trace with hash -335432379, now seen corresponding path program 1 times [2023-11-06 22:20:03,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:03,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350281034] [2023-11-06 22:20:03,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:03,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:05,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:05,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:05,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350281034] [2023-11-06 22:20:05,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350281034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:05,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:05,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:20:05,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986931906] [2023-11-06 22:20:05,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:05,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:20:05,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:05,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:20:05,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:20:05,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 298 [2023-11-06 22:20:05,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 478 flow. Second operand has 8 states, 8 states have (on average 128.75) internal successors, (1030), 8 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:05,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:05,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 298 [2023-11-06 22:20:05,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:07,423 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([473] L831-->L847: Formula: (let ((.cse10 (= (mod v_~a$r_buff1_thd4~0_60 256) 0)) (.cse7 (= (mod v_~a$r_buff0_thd4~0_62 256) 0))) (let ((.cse8 (not .cse7)) (.cse3 (and (= (mod v_~a$w_buff1_used~0_133 256) 0) .cse7)) (.cse4 (and .cse7 .cse10)) (.cse11 (= (mod v_~a$w_buff0_used~0_148 256) 0))) (let ((.cse0 (or .cse3 .cse4 .cse11)) (.cse1 (and .cse8 (not .cse11))) (.cse2 (not (= (mod v_~weak$$choice2~0_32 256) 0))) (.cse6 (= (mod v_~a$w_buff1_used~0_132 256) 0)) (.cse5 (= (mod v_~a$w_buff0_used~0_147 256) 0))) (and (= v_~a$w_buff0~0_61 v_~a$w_buff0~0_60) (= (ite .cse0 v_~a~0_93 (ite .cse1 v_~a$w_buff0~0_61 v_~a$w_buff1~0_64)) v_~__unbuffered_p3_EBX~0_10) (= v_~a$w_buff1_used~0_132 (ite .cse2 v_~a$w_buff1_used~0_133 (ite (or .cse3 .cse4 .cse5) v_~a$w_buff1_used~0_133 0))) (= v_~a$flush_delayed~0_25 0) (= (ite .cse2 v_~a$w_buff0_used~0_148 (ite .cse0 v_~a$w_buff0_used~0_148 (ite .cse1 0 v_~a$w_buff0_used~0_148))) v_~a$w_buff0_used~0_147) (= v_~a~0_93 v_~a$mem_tmp~0_18) (= v_~a$r_buff0_thd4~0_61 (ite .cse2 v_~a$r_buff0_thd4~0_62 (ite (or (and .cse6 .cse7) .cse4 .cse5) v_~a$r_buff0_thd4~0_62 (ite (and (not .cse5) .cse8) 0 v_~a$r_buff0_thd4~0_62)))) (= v_~a$w_buff1~0_64 v_~a$w_buff1~0_63) (= v_~a~0_92 (ite .cse2 v_~a$mem_tmp~0_18 v_~__unbuffered_p3_EBX~0_10)) (= v_~a$r_buff1_thd4~0_59 (ite .cse2 v_~a$r_buff1_thd4~0_60 (ite (let ((.cse9 (= (mod v_~a$r_buff0_thd4~0_61 256) 0))) (or (and .cse9 .cse10) (and .cse6 .cse9) .cse5)) v_~a$r_buff1_thd4~0_60 0))))))) InVars {~a~0=v_~a~0_93, ~a$w_buff1~0=v_~a$w_buff1~0_64, ~a$w_buff0~0=v_~a$w_buff0~0_61, ~a$r_buff1_thd4~0=v_~a$r_buff1_thd4~0_60, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_148, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_133, ~a$r_buff0_thd4~0=v_~a$r_buff0_thd4~0_62} OutVars{~a$r_buff1_thd4~0=v_~a$r_buff1_thd4~0_59, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_147, ~__unbuffered_p3_EBX~0=v_~__unbuffered_p3_EBX~0_10, ~a$r_buff0_thd4~0=v_~a$r_buff0_thd4~0_61, P3Thread1of1ForFork3_#t~nondet3=|v_P3Thread1of1ForFork3_#t~nondet3_1|, ~a~0=v_~a~0_92, ~a$mem_tmp~0=v_~a$mem_tmp~0_18, ~weak$$choice0~0=v_~weak$$choice0~0_7, P3Thread1of1ForFork3_#t~nondet4=|v_P3Thread1of1ForFork3_#t~nondet4_1|, ~a$w_buff1~0=v_~a$w_buff1~0_63, ~a$flush_delayed~0=v_~a$flush_delayed~0_25, ~a$w_buff0~0=v_~a$w_buff0~0_60, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_132, ~weak$$choice2~0=v_~weak$$choice2~0_32} AuxVars[] AssignedVars[~a$r_buff1_thd4~0, ~a$w_buff0_used~0, ~__unbuffered_p3_EBX~0, ~a$r_buff0_thd4~0, P3Thread1of1ForFork3_#t~nondet3, ~a~0, ~a$mem_tmp~0, ~weak$$choice0~0, P3Thread1of1ForFork3_#t~nondet4, ~a$w_buff1~0, ~a$flush_delayed~0, ~a$w_buff0~0, ~a$w_buff1_used~0, ~weak$$choice2~0][76], [130#L798true, Black: 250#(and (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256)) (<= 0 ~main$tmp_guard0~0)), Black: 256#(and (<= ~__unbuffered_cnt~0 2) (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256)) (<= 0 ~main$tmp_guard0~0)), 190#(and (not (= |ULTIMATE.start_main_~#t355~0#1.base| |ULTIMATE.start_main_~#t354~0#1.base|)) (= |ULTIMATE.start_main_old_#valid#1| (store (store (store (store |#valid| |ULTIMATE.start_main_~#t353~0#1.base| 0) |ULTIMATE.start_main_~#t354~0#1.base| 0) |ULTIMATE.start_main_~#t356~0#1.base| 0) |ULTIMATE.start_main_~#t355~0#1.base| 0)) (not (= |ULTIMATE.start_main_~#t355~0#1.base| |ULTIMATE.start_main_~#t353~0#1.base|)) (not (= |ULTIMATE.start_main_~#t354~0#1.base| |ULTIMATE.start_main_~#t353~0#1.base|)) (not (= |ULTIMATE.start_main_~#t356~0#1.base| |ULTIMATE.start_main_~#t355~0#1.base|)) (not (= |ULTIMATE.start_main_~#t356~0#1.base| |ULTIMATE.start_main_~#t354~0#1.base|)) (not (= |ULTIMATE.start_main_~#t356~0#1.base| |ULTIMATE.start_main_~#t353~0#1.base|))), 192#true, 166#true, Black: 194#(= ~__unbuffered_p3_EAX~0 0), Black: 195#(or (not (= 2 ~__unbuffered_p1_EAX~0)) (not (= ~__unbuffered_p3_EAX~0 1)) (not (= ~__unbuffered_p1_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= ~__unbuffered_p2_EAX~0 0))), 208#true, Black: 211#(or (not (= 2 ~__unbuffered_p1_EAX~0)) (not (= ~__unbuffered_p3_EAX~0 1)) (not (= ~__unbuffered_p1_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= ~__unbuffered_p2_EAX~0 0))), Black: 210#(= ~__unbuffered_p1_EAX~0 0), P1Thread1of1ForFork2InUse, 121#L881true, P3Thread1of1ForFork3InUse, P0Thread1of1ForFork0InUse, P2Thread1of1ForFork1InUse, 16#L811true, Black: 227#(and (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256)) (<= 0 ~main$tmp_guard0~0)), Black: 229#(and (= ~__unbuffered_cnt~0 0) (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256)) (<= 0 ~main$tmp_guard0~0)), 269#(and (not (= ~a$w_buff0~0 0)) (= ~a$r_buff1_thd2~0 0) (= ~a$w_buff0_used~0 0) (not (= ~__unbuffered_p3_EBX~0 0)) (= ~a~0 ~a$w_buff0~0) (= ~a$w_buff1~0 0) (= ~a$r_buff0_thd2~0 0)), 100#L847true, 254#(and (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256)) (<= ~__unbuffered_cnt~0 1) (<= 0 ~main$tmp_guard0~0)), 136#P0EXITtrue, Black: 237#(< ~main$tmp_guard0~0 (+ 1 (* (div ~main$tmp_guard0~0 256) 256))), Black: 175#(or (not (= 2 ~__unbuffered_p1_EAX~0)) (not (= ~__unbuffered_p3_EAX~0 1)) (not (= ~__unbuffered_p1_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= ~__unbuffered_p2_EAX~0 0))), 241#(and (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256)) (<= ~__unbuffered_cnt~0 1)), Black: 178#(and (not (= |ULTIMATE.start___VERIFIER_assert_~expression#1| 0)) (or (not (= 2 ~__unbuffered_p1_EAX~0)) (not (= ~__unbuffered_p3_EAX~0 1)) (not (= ~__unbuffered_p1_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= ~__unbuffered_p2_EAX~0 0))))]) [2023-11-06 22:20:07,423 INFO L294 olderBase$Statistics]: this new event has 22 ancestors and is not cut-off event [2023-11-06 22:20:07,423 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is not cut-off event [2023-11-06 22:20:07,424 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is not cut-off event [2023-11-06 22:20:07,424 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is not cut-off event [2023-11-06 22:20:07,642 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([473] L831-->L847: Formula: (let ((.cse10 (= (mod v_~a$r_buff1_thd4~0_60 256) 0)) (.cse7 (= (mod v_~a$r_buff0_thd4~0_62 256) 0))) (let ((.cse8 (not .cse7)) (.cse3 (and (= (mod v_~a$w_buff1_used~0_133 256) 0) .cse7)) (.cse4 (and .cse7 .cse10)) (.cse11 (= (mod v_~a$w_buff0_used~0_148 256) 0))) (let ((.cse0 (or .cse3 .cse4 .cse11)) (.cse1 (and .cse8 (not .cse11))) (.cse2 (not (= (mod v_~weak$$choice2~0_32 256) 0))) (.cse6 (= (mod v_~a$w_buff1_used~0_132 256) 0)) (.cse5 (= (mod v_~a$w_buff0_used~0_147 256) 0))) (and (= v_~a$w_buff0~0_61 v_~a$w_buff0~0_60) (= (ite .cse0 v_~a~0_93 (ite .cse1 v_~a$w_buff0~0_61 v_~a$w_buff1~0_64)) v_~__unbuffered_p3_EBX~0_10) (= v_~a$w_buff1_used~0_132 (ite .cse2 v_~a$w_buff1_used~0_133 (ite (or .cse3 .cse4 .cse5) v_~a$w_buff1_used~0_133 0))) (= v_~a$flush_delayed~0_25 0) (= (ite .cse2 v_~a$w_buff0_used~0_148 (ite .cse0 v_~a$w_buff0_used~0_148 (ite .cse1 0 v_~a$w_buff0_used~0_148))) v_~a$w_buff0_used~0_147) (= v_~a~0_93 v_~a$mem_tmp~0_18) (= v_~a$r_buff0_thd4~0_61 (ite .cse2 v_~a$r_buff0_thd4~0_62 (ite (or (and .cse6 .cse7) .cse4 .cse5) v_~a$r_buff0_thd4~0_62 (ite (and (not .cse5) .cse8) 0 v_~a$r_buff0_thd4~0_62)))) (= v_~a$w_buff1~0_64 v_~a$w_buff1~0_63) (= v_~a~0_92 (ite .cse2 v_~a$mem_tmp~0_18 v_~__unbuffered_p3_EBX~0_10)) (= v_~a$r_buff1_thd4~0_59 (ite .cse2 v_~a$r_buff1_thd4~0_60 (ite (let ((.cse9 (= (mod v_~a$r_buff0_thd4~0_61 256) 0))) (or (and .cse9 .cse10) (and .cse6 .cse9) .cse5)) v_~a$r_buff1_thd4~0_60 0))))))) InVars {~a~0=v_~a~0_93, ~a$w_buff1~0=v_~a$w_buff1~0_64, ~a$w_buff0~0=v_~a$w_buff0~0_61, ~a$r_buff1_thd4~0=v_~a$r_buff1_thd4~0_60, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_148, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_133, ~a$r_buff0_thd4~0=v_~a$r_buff0_thd4~0_62} OutVars{~a$r_buff1_thd4~0=v_~a$r_buff1_thd4~0_59, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_147, ~__unbuffered_p3_EBX~0=v_~__unbuffered_p3_EBX~0_10, ~a$r_buff0_thd4~0=v_~a$r_buff0_thd4~0_61, P3Thread1of1ForFork3_#t~nondet3=|v_P3Thread1of1ForFork3_#t~nondet3_1|, ~a~0=v_~a~0_92, ~a$mem_tmp~0=v_~a$mem_tmp~0_18, ~weak$$choice0~0=v_~weak$$choice0~0_7, P3Thread1of1ForFork3_#t~nondet4=|v_P3Thread1of1ForFork3_#t~nondet4_1|, ~a$w_buff1~0=v_~a$w_buff1~0_63, ~a$flush_delayed~0=v_~a$flush_delayed~0_25, ~a$w_buff0~0=v_~a$w_buff0~0_60, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_132, ~weak$$choice2~0=v_~weak$$choice2~0_32} AuxVars[] AssignedVars[~a$r_buff1_thd4~0, ~a$w_buff0_used~0, ~__unbuffered_p3_EBX~0, ~a$r_buff0_thd4~0, P3Thread1of1ForFork3_#t~nondet3, ~a~0, ~a$mem_tmp~0, ~weak$$choice0~0, P3Thread1of1ForFork3_#t~nondet4, ~a$w_buff1~0, ~a$flush_delayed~0, ~a$w_buff0~0, ~a$w_buff1_used~0, ~weak$$choice2~0][76], [Black: 250#(and (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256)) (<= 0 ~main$tmp_guard0~0)), 104#P1EXITtrue, 190#(and (not (= |ULTIMATE.start_main_~#t355~0#1.base| |ULTIMATE.start_main_~#t354~0#1.base|)) (= |ULTIMATE.start_main_old_#valid#1| (store (store (store (store |#valid| |ULTIMATE.start_main_~#t353~0#1.base| 0) |ULTIMATE.start_main_~#t354~0#1.base| 0) |ULTIMATE.start_main_~#t356~0#1.base| 0) |ULTIMATE.start_main_~#t355~0#1.base| 0)) (not (= |ULTIMATE.start_main_~#t355~0#1.base| |ULTIMATE.start_main_~#t353~0#1.base|)) (not (= |ULTIMATE.start_main_~#t354~0#1.base| |ULTIMATE.start_main_~#t353~0#1.base|)) (not (= |ULTIMATE.start_main_~#t356~0#1.base| |ULTIMATE.start_main_~#t355~0#1.base|)) (not (= |ULTIMATE.start_main_~#t356~0#1.base| |ULTIMATE.start_main_~#t354~0#1.base|)) (not (= |ULTIMATE.start_main_~#t356~0#1.base| |ULTIMATE.start_main_~#t353~0#1.base|))), 192#true, 166#true, Black: 194#(= ~__unbuffered_p3_EAX~0 0), Black: 195#(or (not (= 2 ~__unbuffered_p1_EAX~0)) (not (= ~__unbuffered_p3_EAX~0 1)) (not (= ~__unbuffered_p1_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= ~__unbuffered_p2_EAX~0 0))), 237#(< ~main$tmp_guard0~0 (+ 1 (* (div ~main$tmp_guard0~0 256) 256))), 208#true, Black: 211#(or (not (= 2 ~__unbuffered_p1_EAX~0)) (not (= ~__unbuffered_p3_EAX~0 1)) (not (= ~__unbuffered_p1_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= ~__unbuffered_p2_EAX~0 0))), Black: 210#(= ~__unbuffered_p1_EAX~0 0), P1Thread1of1ForFork2InUse, 121#L881true, 256#(and (<= ~__unbuffered_cnt~0 2) (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256)) (<= 0 ~main$tmp_guard0~0)), P3Thread1of1ForFork3InUse, P0Thread1of1ForFork0InUse, P2Thread1of1ForFork1InUse, 16#L811true, Black: 227#(and (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256)) (<= 0 ~main$tmp_guard0~0)), Black: 229#(and (= ~__unbuffered_cnt~0 0) (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256)) (<= 0 ~main$tmp_guard0~0)), 269#(and (not (= ~a$w_buff0~0 0)) (= ~a$r_buff1_thd2~0 0) (= ~a$w_buff0_used~0 0) (not (= ~__unbuffered_p3_EBX~0 0)) (= ~a~0 ~a$w_buff0~0) (= ~a$w_buff1~0 0) (= ~a$r_buff0_thd2~0 0)), 100#L847true, 136#P0EXITtrue, Black: 241#(and (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256)) (<= ~__unbuffered_cnt~0 1)), Black: 175#(or (not (= 2 ~__unbuffered_p1_EAX~0)) (not (= ~__unbuffered_p3_EAX~0 1)) (not (= ~__unbuffered_p1_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= ~__unbuffered_p2_EAX~0 0))), Black: 178#(and (not (= |ULTIMATE.start___VERIFIER_assert_~expression#1| 0)) (or (not (= 2 ~__unbuffered_p1_EAX~0)) (not (= ~__unbuffered_p3_EAX~0 1)) (not (= ~__unbuffered_p1_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= ~__unbuffered_p2_EAX~0 0))))]) [2023-11-06 22:20:07,642 INFO L294 olderBase$Statistics]: this new event has 23 ancestors and is not cut-off event [2023-11-06 22:20:07,642 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is not cut-off event [2023-11-06 22:20:07,642 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is not cut-off event [2023-11-06 22:20:07,642 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is not cut-off event [2023-11-06 22:20:08,093 INFO L124 PetriNetUnfolderBase]: 11950/19011 cut-off events. [2023-11-06 22:20:08,093 INFO L125 PetriNetUnfolderBase]: For 53379/54467 co-relation queries the response was YES. [2023-11-06 22:20:08,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72378 conditions, 19011 events. 11950/19011 cut-off events. For 53379/54467 co-relation queries the response was YES. Maximal size of possible extension queue 1047. Compared 140690 event pairs, 1163 based on Foata normal form. 74/18701 useless extension candidates. Maximal degree in co-relation 72360. Up to 7991 conditions per place. [2023-11-06 22:20:08,245 INFO L140 encePairwiseOnDemand]: 289/298 looper letters, 128 selfloop transitions, 12 changer transitions 57/216 dead transitions. [2023-11-06 22:20:08,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 216 transitions, 1926 flow [2023-11-06 22:20:08,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:20:08,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:20:08,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1121 transitions. [2023-11-06 22:20:08,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702181208053691 [2023-11-06 22:20:08,251 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1121 transitions. [2023-11-06 22:20:08,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1121 transitions. [2023-11-06 22:20:08,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:08,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1121 transitions. [2023-11-06 22:20:08,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 140.125) internal successors, (1121), 8 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:08,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 298.0) internal successors, (2682), 9 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:08,265 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 298.0) internal successors, (2682), 9 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:08,265 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 478 flow. Second operand 8 states and 1121 transitions. [2023-11-06 22:20:08,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 216 transitions, 1926 flow [2023-11-06 22:20:10,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 216 transitions, 1771 flow, removed 42 selfloop flow, removed 3 redundant places. [2023-11-06 22:20:10,058 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 585 flow [2023-11-06 22:20:10,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=585, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2023-11-06 22:20:10,060 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 24 predicate places. [2023-11-06 22:20:10,060 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 585 flow [2023-11-06 22:20:10,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 128.75) internal successors, (1030), 8 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:10,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:10,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:10,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:20:10,062 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:20:10,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:10,062 INFO L85 PathProgramCache]: Analyzing trace with hash -477442061, now seen corresponding path program 2 times [2023-11-06 22:20:10,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:10,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353234852] [2023-11-06 22:20:10,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:10,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:10,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:10,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:10,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353234852] [2023-11-06 22:20:10,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353234852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:10,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:10,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:20:10,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570333135] [2023-11-06 22:20:10,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:10,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:20:10,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:10,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:20:10,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:20:10,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 298 [2023-11-06 22:20:10,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 585 flow. Second operand has 7 states, 7 states have (on average 133.14285714285714) internal successors, (932), 7 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:10,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:10,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 298 [2023-11-06 22:20:10,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:13,901 INFO L124 PetriNetUnfolderBase]: 10193/15969 cut-off events. [2023-11-06 22:20:13,902 INFO L125 PetriNetUnfolderBase]: For 41523/43170 co-relation queries the response was YES. [2023-11-06 22:20:14,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64944 conditions, 15969 events. 10193/15969 cut-off events. For 41523/43170 co-relation queries the response was YES. Maximal size of possible extension queue 923. Compared 116115 event pairs, 1843 based on Foata normal form. 225/15671 useless extension candidates. Maximal degree in co-relation 64921. Up to 6369 conditions per place. [2023-11-06 22:20:14,069 INFO L140 encePairwiseOnDemand]: 291/298 looper letters, 102 selfloop transitions, 18 changer transitions 1/140 dead transitions. [2023-11-06 22:20:14,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 140 transitions, 1236 flow [2023-11-06 22:20:14,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:20:14,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:20:14,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 992 transitions. [2023-11-06 22:20:14,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47555129434324067 [2023-11-06 22:20:14,074 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 992 transitions. [2023-11-06 22:20:14,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 992 transitions. [2023-11-06 22:20:14,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:14,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 992 transitions. [2023-11-06 22:20:14,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 141.71428571428572) internal successors, (992), 7 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:14,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 298.0) internal successors, (2384), 8 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:14,086 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 298.0) internal successors, (2384), 8 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:14,086 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 585 flow. Second operand 7 states and 992 transitions. [2023-11-06 22:20:14,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 140 transitions, 1236 flow [2023-11-06 22:20:17,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 140 transitions, 1171 flow, removed 14 selfloop flow, removed 7 redundant places. [2023-11-06 22:20:17,019 INFO L231 Difference]: Finished difference. Result has 76 places, 73 transitions, 600 flow [2023-11-06 22:20:17,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=600, PETRI_PLACES=76, PETRI_TRANSITIONS=73} [2023-11-06 22:20:17,020 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 22 predicate places. [2023-11-06 22:20:17,020 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 73 transitions, 600 flow [2023-11-06 22:20:17,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 133.14285714285714) internal successors, (932), 7 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:17,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:17,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:17,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:20:17,021 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:20:17,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:17,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1482538393, now seen corresponding path program 1 times [2023-11-06 22:20:17,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:17,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271445135] [2023-11-06 22:20:17,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:17,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:17,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:17,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:17,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271445135] [2023-11-06 22:20:17,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271445135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:17,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:17,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:20:17,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161645968] [2023-11-06 22:20:17,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:17,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:20:17,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:17,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:20:17,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:20:17,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 298 [2023-11-06 22:20:17,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 73 transitions, 600 flow. Second operand has 7 states, 7 states have (on average 121.28571428571429) internal successors, (849), 7 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:17,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:17,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 298 [2023-11-06 22:20:17,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand