./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba2622a-f8c9-4621-b12c-2bcdf48cb527/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba2622a-f8c9-4621-b12c-2bcdf48cb527/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_8ba2622a-f8c9-4621-b12c-2bcdf48cb527/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba2622a-f8c9-4621-b12c-2bcdf48cb527/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.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_8ba2622a-f8c9-4621-b12c-2bcdf48cb527/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba2622a-f8c9-4621-b12c-2bcdf48cb527/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 ! call(reach_error())) ) --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 22:35:18,669 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:35:18,753 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba2622a-f8c9-4621-b12c-2bcdf48cb527/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:35:18,761 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:35:18,761 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:35:18,802 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:35:18,803 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:35:18,804 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:35:18,805 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:35:18,809 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:35:18,811 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:35:18,811 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:35:18,812 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:35:18,814 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:35:18,814 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:35:18,814 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:35:18,815 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:35:18,815 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:35:18,816 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:35:18,816 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:35:18,817 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:35:18,817 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:35:18,818 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:35:18,819 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:35:18,820 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:35:18,820 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:35:18,821 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:35:18,821 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:35:18,822 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:35:18,822 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:35:18,823 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:35:18,824 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:35:18,824 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:35:18,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:35:18,824 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:35:18,824 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:35:18,825 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:35:18,825 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:35:18,825 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:35:18,825 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_8ba2622a-f8c9-4621-b12c-2bcdf48cb527/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba2622a-f8c9-4621-b12c-2bcdf48cb527/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a75df8feda97f2ebeb5cc4266066f8deba1b6726a771b6143f22a640cfcf63d2 [2023-11-06 22:35:19,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:35:19,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:35:19,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:35:19,242 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:35:19,243 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:35:19,244 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba2622a-f8c9-4621-b12c-2bcdf48cb527/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i [2023-11-06 22:35:22,304 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:35:22,623 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:35:22,624 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba2622a-f8c9-4621-b12c-2bcdf48cb527/sv-benchmarks/c/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i [2023-11-06 22:35:22,654 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba2622a-f8c9-4621-b12c-2bcdf48cb527/bin/uautomizer-verify-WvqO1wxjHP/data/28bc79ddb/fe3412e68a054e5ba306cf391d7edb71/FLAG04f69d09c [2023-11-06 22:35:22,669 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba2622a-f8c9-4621-b12c-2bcdf48cb527/bin/uautomizer-verify-WvqO1wxjHP/data/28bc79ddb/fe3412e68a054e5ba306cf391d7edb71 [2023-11-06 22:35:22,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:35:22,673 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:35:22,675 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:35:22,675 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:35:22,681 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:35:22,682 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:35:22" (1/1) ... [2023-11-06 22:35:22,683 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@394e4f08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:22, skipping insertion in model container [2023-11-06 22:35:22,684 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:35:22" (1/1) ... [2023-11-06 22:35:22,767 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:35:23,018 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba2622a-f8c9-4621-b12c-2bcdf48cb527/sv-benchmarks/c/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2023-11-06 22:35:23,328 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:35:23,349 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:35:23,363 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba2622a-f8c9-4621-b12c-2bcdf48cb527/sv-benchmarks/c/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2023-11-06 22:35:23,464 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:35:23,514 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:35:23,514 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:35:23,522 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:35:23,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:23 WrapperNode [2023-11-06 22:35:23,523 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:35:23,524 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:35:23,524 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:35:23,525 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:35:23,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:23" (1/1) ... [2023-11-06 22:35:23,575 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:23" (1/1) ... [2023-11-06 22:35:23,629 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2023-11-06 22:35:23,630 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:35:23,631 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:35:23,631 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:35:23,631 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:35:23,641 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:23" (1/1) ... [2023-11-06 22:35:23,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:23" (1/1) ... [2023-11-06 22:35:23,655 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:23" (1/1) ... [2023-11-06 22:35:23,656 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:23" (1/1) ... [2023-11-06 22:35:23,669 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:23" (1/1) ... [2023-11-06 22:35:23,671 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:23" (1/1) ... [2023-11-06 22:35:23,674 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:23" (1/1) ... [2023-11-06 22:35:23,692 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:23" (1/1) ... [2023-11-06 22:35:23,696 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:35:23,697 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:35:23,697 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:35:23,697 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:35:23,698 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:23" (1/1) ... [2023-11-06 22:35:23,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:35:23,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba2622a-f8c9-4621-b12c-2bcdf48cb527/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:35:23,741 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba2622a-f8c9-4621-b12c-2bcdf48cb527/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:35:23,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba2622a-f8c9-4621-b12c-2bcdf48cb527/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:35:23,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:35:23,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:35:23,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:35:23,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:35:23,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:35:23,799 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 22:35:23,799 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 22:35:23,799 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 22:35:23,799 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 22:35:23,799 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-06 22:35:23,801 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-06 22:35:23,801 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-06 22:35:23,802 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-06 22:35:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:35:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:35:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:35:23,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:35:23,804 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 22:35:23,973 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:35:23,974 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:35:24,365 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:35:24,576 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:35:24,577 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:35:24,581 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:35:24 BoogieIcfgContainer [2023-11-06 22:35:24,581 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:35:24,586 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:35:24,586 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:35:24,591 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:35:24,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:35:22" (1/3) ... [2023-11-06 22:35:24,593 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53aab476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:35:24, skipping insertion in model container [2023-11-06 22:35:24,593 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:23" (2/3) ... [2023-11-06 22:35:24,595 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53aab476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:35:24, skipping insertion in model container [2023-11-06 22:35:24,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:35:24" (3/3) ... [2023-11-06 22:35:24,597 INFO L112 eAbstractionObserver]: Analyzing ICFG mix014_power.oepc_pso.oepc_rmo.oepc.i [2023-11-06 22:35:24,613 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:35:24,624 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:35:24,625 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 22:35:24,625 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:35:24,725 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:35:24,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 136 transitions, 288 flow [2023-11-06 22:35:24,868 INFO L124 PetriNetUnfolderBase]: 2/132 cut-off events. [2023-11-06 22:35:24,869 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:35:24,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 132 events. 2/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 77 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-11-06 22:35:24,877 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 136 transitions, 288 flow [2023-11-06 22:35:24,882 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 132 transitions, 276 flow [2023-11-06 22:35:24,886 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:35:24,896 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 132 transitions, 276 flow [2023-11-06 22:35:24,900 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 132 transitions, 276 flow [2023-11-06 22:35:24,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 132 transitions, 276 flow [2023-11-06 22:35:24,933 INFO L124 PetriNetUnfolderBase]: 2/132 cut-off events. [2023-11-06 22:35:24,934 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:35:24,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 132 events. 2/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 77 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-11-06 22:35:24,938 INFO L119 LiptonReduction]: Number of co-enabled transitions 3548 [2023-11-06 22:35:30,100 INFO L134 LiptonReduction]: Checked pairs total: 10026 [2023-11-06 22:35:30,100 INFO L136 LiptonReduction]: Total number of compositions: 112 [2023-11-06 22:35:30,124 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:35:30,133 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@46c0f0f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:35:30,133 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-06 22:35:30,137 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:35:30,137 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-06 22:35:30,138 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:35:30,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:35:30,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:35:30,139 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:35:30,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:35:30,147 INFO L85 PathProgramCache]: Analyzing trace with hash 567306, now seen corresponding path program 1 times [2023-11-06 22:35:30,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:35:30,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070298842] [2023-11-06 22:35:30,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:35:30,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:35:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:30,656 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 22:35:30,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:35:30,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070298842] [2023-11-06 22:35:30,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070298842] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:35:30,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:35:30,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:35:30,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421379189] [2023-11-06 22:35:30,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:35:30,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:35:30,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:35:30,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:35:30,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:35:30,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 248 [2023-11-06 22:35:30,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 33 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 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 22:35:30,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:35:30,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 248 [2023-11-06 22:35:30,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:35:32,372 INFO L124 PetriNetUnfolderBase]: 5879/8510 cut-off events. [2023-11-06 22:35:32,373 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-06 22:35:32,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16654 conditions, 8510 events. 5879/8510 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 52821 event pairs, 1079 based on Foata normal form. 0/8172 useless extension candidates. Maximal degree in co-relation 16642. Up to 6367 conditions per place. [2023-11-06 22:35:32,454 INFO L140 encePairwiseOnDemand]: 244/248 looper letters, 43 selfloop transitions, 2 changer transitions 2/52 dead transitions. [2023-11-06 22:35:32,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 52 transitions, 219 flow [2023-11-06 22:35:32,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:35:32,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:35:32,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 410 transitions. [2023-11-06 22:35:32,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5510752688172043 [2023-11-06 22:35:32,478 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 410 transitions. [2023-11-06 22:35:32,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 410 transitions. [2023-11-06 22:35:32,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:35:32,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 410 transitions. [2023-11-06 22:35:32,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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 22:35:32,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 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 22:35:32,500 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 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 22:35:32,502 INFO L175 Difference]: Start difference. First operand has 45 places, 33 transitions, 78 flow. Second operand 3 states and 410 transitions. [2023-11-06 22:35:32,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 52 transitions, 219 flow [2023-11-06 22:35:32,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 212 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:35:32,511 INFO L231 Difference]: Finished difference. Result has 42 places, 30 transitions, 72 flow [2023-11-06 22:35:32,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2023-11-06 22:35:32,520 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -3 predicate places. [2023-11-06 22:35:32,555 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 72 flow [2023-11-06 22:35:32,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 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 22:35:32,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:35:32,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:35:32,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:35:32,556 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:35:32,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:35:32,557 INFO L85 PathProgramCache]: Analyzing trace with hash 397271417, now seen corresponding path program 1 times [2023-11-06 22:35:32,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:35:32,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450626572] [2023-11-06 22:35:32,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:35:32,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:35:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:32,901 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 22:35:32,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:35:32,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450626572] [2023-11-06 22:35:32,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450626572] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:35:32,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:35:32,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:35:32,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632691184] [2023-11-06 22:35:32,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:35:32,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:35:32,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:35:32,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:35:32,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:35:32,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 248 [2023-11-06 22:35:32,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 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 22:35:32,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:35:32,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 248 [2023-11-06 22:35:32,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:35:37,811 INFO L124 PetriNetUnfolderBase]: 25803/34900 cut-off events. [2023-11-06 22:35:37,812 INFO L125 PetriNetUnfolderBase]: For 1145/1145 co-relation queries the response was YES. [2023-11-06 22:35:37,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71520 conditions, 34900 events. 25803/34900 cut-off events. For 1145/1145 co-relation queries the response was YES. Maximal size of possible extension queue 1036. Compared 191777 event pairs, 9305 based on Foata normal form. 1428/36328 useless extension candidates. Maximal degree in co-relation 71510. Up to 20929 conditions per place. [2023-11-06 22:35:38,010 INFO L140 encePairwiseOnDemand]: 238/248 looper letters, 47 selfloop transitions, 8 changer transitions 37/92 dead transitions. [2023-11-06 22:35:38,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 92 transitions, 390 flow [2023-11-06 22:35:38,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:35:38,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:35:38,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 629 transitions. [2023-11-06 22:35:38,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.507258064516129 [2023-11-06 22:35:38,014 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 629 transitions. [2023-11-06 22:35:38,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 629 transitions. [2023-11-06 22:35:38,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:35:38,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 629 transitions. [2023-11-06 22:35:38,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 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 22:35:38,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 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 22:35:38,023 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 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 22:35:38,023 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 72 flow. Second operand 5 states and 629 transitions. [2023-11-06 22:35:38,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 92 transitions, 390 flow [2023-11-06 22:35:38,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 92 transitions, 380 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:35:38,027 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 148 flow [2023-11-06 22:35:38,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=148, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2023-11-06 22:35:38,029 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2023-11-06 22:35:38,029 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 148 flow [2023-11-06 22:35:38,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 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 22:35:38,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:35:38,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:35:38,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:35:38,031 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:35:38,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:35:38,031 INFO L85 PathProgramCache]: Analyzing trace with hash -569486437, now seen corresponding path program 1 times [2023-11-06 22:35:38,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:35:38,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734198825] [2023-11-06 22:35:38,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:35:38,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:35:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:38,430 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 22:35:38,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:35:38,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734198825] [2023-11-06 22:35:38,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734198825] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:35:38,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:35:38,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:35:38,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202588278] [2023-11-06 22:35:38,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:35:38,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:35:38,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:35:38,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:35:38,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:35:38,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 248 [2023-11-06 22:35:38,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 120.25) internal successors, (481), 4 states have internal predecessors, (481), 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 22:35:38,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:35:38,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 248 [2023-11-06 22:35:38,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:35:41,818 INFO L124 PetriNetUnfolderBase]: 16640/24010 cut-off events. [2023-11-06 22:35:41,818 INFO L125 PetriNetUnfolderBase]: For 13707/14308 co-relation queries the response was YES. [2023-11-06 22:35:41,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60718 conditions, 24010 events. 16640/24010 cut-off events. For 13707/14308 co-relation queries the response was YES. Maximal size of possible extension queue 920. Compared 151634 event pairs, 5062 based on Foata normal form. 1358/24813 useless extension candidates. Maximal degree in co-relation 60704. Up to 13573 conditions per place. [2023-11-06 22:35:42,004 INFO L140 encePairwiseOnDemand]: 244/248 looper letters, 43 selfloop transitions, 3 changer transitions 29/83 dead transitions. [2023-11-06 22:35:42,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 83 transitions, 436 flow [2023-11-06 22:35:42,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:35:42,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:35:42,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 654 transitions. [2023-11-06 22:35:42,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5274193548387097 [2023-11-06 22:35:42,008 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 654 transitions. [2023-11-06 22:35:42,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 654 transitions. [2023-11-06 22:35:42,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:35:42,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 654 transitions. [2023-11-06 22:35:42,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.8) internal successors, (654), 5 states have internal predecessors, (654), 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 22:35:42,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 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 22:35:42,016 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 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 22:35:42,016 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 148 flow. Second operand 5 states and 654 transitions. [2023-11-06 22:35:42,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 83 transitions, 436 flow [2023-11-06 22:35:42,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 83 transitions, 408 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 22:35:42,214 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 145 flow [2023-11-06 22:35:42,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=145, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2023-11-06 22:35:42,216 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 5 predicate places. [2023-11-06 22:35:42,220 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 145 flow [2023-11-06 22:35:42,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.25) internal successors, (481), 4 states have internal predecessors, (481), 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 22:35:42,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:35:42,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:35:42,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:35:42,222 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:35:42,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:35:42,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1251909062, now seen corresponding path program 1 times [2023-11-06 22:35:42,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:35:42,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346969026] [2023-11-06 22:35:42,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:35:42,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:35:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:42,452 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 22:35:42,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:35:42,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346969026] [2023-11-06 22:35:42,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346969026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:35:42,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:35:42,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:35:42,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261061765] [2023-11-06 22:35:42,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:35:42,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:35:42,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:35:42,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:35:42,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:35:42,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 248 [2023-11-06 22:35:42,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 120.25) internal successors, (481), 4 states have internal predecessors, (481), 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 22:35:42,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:35:42,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 248 [2023-11-06 22:35:42,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:35:45,133 INFO L124 PetriNetUnfolderBase]: 14597/20778 cut-off events. [2023-11-06 22:35:45,134 INFO L125 PetriNetUnfolderBase]: For 12039/12940 co-relation queries the response was YES. [2023-11-06 22:35:45,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51027 conditions, 20778 events. 14597/20778 cut-off events. For 12039/12940 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 122223 event pairs, 4930 based on Foata normal form. 840/21113 useless extension candidates. Maximal degree in co-relation 51010. Up to 12637 conditions per place. [2023-11-06 22:35:45,259 INFO L140 encePairwiseOnDemand]: 244/248 looper letters, 38 selfloop transitions, 3 changer transitions 24/73 dead transitions. [2023-11-06 22:35:45,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 73 transitions, 369 flow [2023-11-06 22:35:45,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:35:45,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:35:45,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 646 transitions. [2023-11-06 22:35:45,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5209677419354839 [2023-11-06 22:35:45,263 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 646 transitions. [2023-11-06 22:35:45,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 646 transitions. [2023-11-06 22:35:45,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:35:45,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 646 transitions. [2023-11-06 22:35:45,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.2) internal successors, (646), 5 states have internal predecessors, (646), 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 22:35:45,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 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 22:35:45,271 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 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 22:35:45,272 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 145 flow. Second operand 5 states and 646 transitions. [2023-11-06 22:35:45,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 73 transitions, 369 flow [2023-11-06 22:35:45,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 73 transitions, 357 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-06 22:35:45,575 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 148 flow [2023-11-06 22:35:45,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=148, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2023-11-06 22:35:45,577 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 5 predicate places. [2023-11-06 22:35:45,577 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 148 flow [2023-11-06 22:35:45,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.25) internal successors, (481), 4 states have internal predecessors, (481), 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 22:35:45,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:35:45,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:35:45,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:35:45,578 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:35:45,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:35:45,579 INFO L85 PathProgramCache]: Analyzing trace with hash -735410235, now seen corresponding path program 1 times [2023-11-06 22:35:45,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:35:45,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072948340] [2023-11-06 22:35:45,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:35:45,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:35:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:45,744 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 22:35:45,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:35:45,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072948340] [2023-11-06 22:35:45,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072948340] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:35:45,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:35:45,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:35:45,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580776505] [2023-11-06 22:35:45,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:35:45,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:35:45,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:35:45,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:35:45,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:35:45,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 248 [2023-11-06 22:35:45,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 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 22:35:45,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:35:45,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 248 [2023-11-06 22:35:45,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:35:47,870 INFO L124 PetriNetUnfolderBase]: 10062/14925 cut-off events. [2023-11-06 22:35:47,871 INFO L125 PetriNetUnfolderBase]: For 6238/6919 co-relation queries the response was YES. [2023-11-06 22:35:47,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36077 conditions, 14925 events. 10062/14925 cut-off events. For 6238/6919 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 95421 event pairs, 2092 based on Foata normal form. 1081/15481 useless extension candidates. Maximal degree in co-relation 36060. Up to 6668 conditions per place. [2023-11-06 22:35:47,953 INFO L140 encePairwiseOnDemand]: 241/248 looper letters, 58 selfloop transitions, 6 changer transitions 0/74 dead transitions. [2023-11-06 22:35:47,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 74 transitions, 380 flow [2023-11-06 22:35:47,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:35:47,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:35:47,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 516 transitions. [2023-11-06 22:35:47,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5201612903225806 [2023-11-06 22:35:47,956 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 516 transitions. [2023-11-06 22:35:47,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 516 transitions. [2023-11-06 22:35:47,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:35:47,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 516 transitions. [2023-11-06 22:35:47,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 22:35:47,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 248.0) internal successors, (1240), 5 states have internal predecessors, (1240), 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 22:35:47,968 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 248.0) internal successors, (1240), 5 states have internal predecessors, (1240), 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 22:35:47,969 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 148 flow. Second operand 4 states and 516 transitions. [2023-11-06 22:35:47,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 74 transitions, 380 flow [2023-11-06 22:35:48,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 74 transitions, 370 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-06 22:35:48,039 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 184 flow [2023-11-06 22:35:48,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2023-11-06 22:35:48,041 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2023-11-06 22:35:48,041 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 184 flow [2023-11-06 22:35:48,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 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 22:35:48,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:35:48,042 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 22:35:48,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:35:48,042 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:35:48,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:35:48,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1022560941, now seen corresponding path program 1 times [2023-11-06 22:35:48,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:35:48,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91945689] [2023-11-06 22:35:48,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:35:48,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:35:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:48,252 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 22:35:48,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:35:48,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91945689] [2023-11-06 22:35:48,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91945689] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:35:48,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:35:48,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:35:48,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215777100] [2023-11-06 22:35:48,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:35:48,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:35:48,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:35:48,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:35:48,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:35:48,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 248 [2023-11-06 22:35:48,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 184 flow. Second operand has 5 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 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 22:35:48,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:35:48,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 248 [2023-11-06 22:35:48,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:35:50,005 INFO L124 PetriNetUnfolderBase]: 7700/11824 cut-off events. [2023-11-06 22:35:50,005 INFO L125 PetriNetUnfolderBase]: For 6933/7451 co-relation queries the response was YES. [2023-11-06 22:35:50,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33919 conditions, 11824 events. 7700/11824 cut-off events. For 6933/7451 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 77779 event pairs, 1784 based on Foata normal form. 703/12044 useless extension candidates. Maximal degree in co-relation 33902. Up to 4402 conditions per place. [2023-11-06 22:35:50,085 INFO L140 encePairwiseOnDemand]: 241/248 looper letters, 74 selfloop transitions, 10 changer transitions 0/94 dead transitions. [2023-11-06 22:35:50,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 94 transitions, 521 flow [2023-11-06 22:35:50,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:35:50,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:35:50,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 648 transitions. [2023-11-06 22:35:50,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225806451612903 [2023-11-06 22:35:50,090 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 648 transitions. [2023-11-06 22:35:50,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 648 transitions. [2023-11-06 22:35:50,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:35:50,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 648 transitions. [2023-11-06 22:35:50,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.6) internal successors, (648), 5 states have internal predecessors, (648), 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 22:35:50,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 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 22:35:50,103 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 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 22:35:50,103 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 184 flow. Second operand 5 states and 648 transitions. [2023-11-06 22:35:50,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 94 transitions, 521 flow [2023-11-06 22:35:50,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 94 transitions, 518 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:35:50,111 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 249 flow [2023-11-06 22:35:50,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=249, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2023-11-06 22:35:50,116 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 9 predicate places. [2023-11-06 22:35:50,116 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 249 flow [2023-11-06 22:35:50,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 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 22:35:50,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:35:50,117 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 22:35:50,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:35:50,118 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:35:50,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:35:50,118 INFO L85 PathProgramCache]: Analyzing trace with hash -104219841, now seen corresponding path program 1 times [2023-11-06 22:35:50,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:35:50,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397639869] [2023-11-06 22:35:50,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:35:50,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:35:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:50,485 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 22:35:50,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:35:50,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397639869] [2023-11-06 22:35:50,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397639869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:35:50,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:35:50,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:35:50,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948234821] [2023-11-06 22:35:50,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:35:50,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:35:50,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:35:50,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:35:50,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:35:50,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 248 [2023-11-06 22:35:50,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 249 flow. Second operand has 6 states, 6 states have (on average 117.16666666666667) internal successors, (703), 6 states have internal predecessors, (703), 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 22:35:50,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:35:50,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 248 [2023-11-06 22:35:50,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:35:51,856 INFO L124 PetriNetUnfolderBase]: 7030/10798 cut-off events. [2023-11-06 22:35:51,856 INFO L125 PetriNetUnfolderBase]: For 15327/15819 co-relation queries the response was YES. [2023-11-06 22:35:51,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35106 conditions, 10798 events. 7030/10798 cut-off events. For 15327/15819 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 70910 event pairs, 1700 based on Foata normal form. 234/10561 useless extension candidates. Maximal degree in co-relation 35086. Up to 4402 conditions per place. [2023-11-06 22:35:51,917 INFO L140 encePairwiseOnDemand]: 241/248 looper letters, 88 selfloop transitions, 14 changer transitions 0/112 dead transitions. [2023-11-06 22:35:51,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 112 transitions, 680 flow [2023-11-06 22:35:51,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:35:51,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:35:51,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 778 transitions. [2023-11-06 22:35:51,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228494623655914 [2023-11-06 22:35:51,922 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 778 transitions. [2023-11-06 22:35:51,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 778 transitions. [2023-11-06 22:35:51,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:35:51,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 778 transitions. [2023-11-06 22:35:51,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 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 22:35:51,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 248.0) internal successors, (1736), 7 states have internal predecessors, (1736), 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 22:35:51,930 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 248.0) internal successors, (1736), 7 states have internal predecessors, (1736), 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 22:35:51,931 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 249 flow. Second operand 6 states and 778 transitions. [2023-11-06 22:35:51,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 112 transitions, 680 flow [2023-11-06 22:35:51,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 112 transitions, 664 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-06 22:35:51,948 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 319 flow [2023-11-06 22:35:51,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=319, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2023-11-06 22:35:51,948 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 14 predicate places. [2023-11-06 22:35:51,949 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 319 flow [2023-11-06 22:35:51,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.16666666666667) internal successors, (703), 6 states have internal predecessors, (703), 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 22:35:51,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:35:51,950 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 22:35:51,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:35:51,950 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:35:51,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:35:51,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1803181666, now seen corresponding path program 1 times [2023-11-06 22:35:51,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:35:51,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567979461] [2023-11-06 22:35:51,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:35:51,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:35:52,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:53,320 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 22:35:53,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:35:53,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567979461] [2023-11-06 22:35:53,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567979461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:35:53,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:35:53,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:35:53,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388080062] [2023-11-06 22:35:53,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:35:53,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:35:53,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:35:53,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:35:53,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:35:53,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 248 [2023-11-06 22:35:53,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 319 flow. Second operand has 8 states, 8 states have (on average 116.75) internal successors, (934), 8 states have internal predecessors, (934), 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 22:35:53,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:35:53,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 248 [2023-11-06 22:35:53,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:35:55,244 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([421] 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$$choice2~0_32 256) 0))) (.cse6 (= (mod v_~a$w_buff1_used~0_132 256) 0)) (.cse5 (= (mod v_~a$w_buff0_used~0_147 256) 0))) (and (= v_~a$w_buff0~0_61 v_~a$w_buff0~0_60) (= (ite .cse0 v_~a~0_93 (ite .cse1 v_~a$w_buff0~0_61 v_~a$w_buff1~0_64)) v_~__unbuffered_p3_EBX~0_10) (= v_~a$w_buff1_used~0_132 (ite .cse2 v_~a$w_buff1_used~0_133 (ite (or .cse3 .cse4 .cse5) v_~a$w_buff1_used~0_133 0))) (= v_~a$flush_delayed~0_25 0) (= (ite .cse2 v_~a$w_buff0_used~0_148 (ite .cse0 v_~a$w_buff0_used~0_148 (ite .cse1 0 v_~a$w_buff0_used~0_148))) v_~a$w_buff0_used~0_147) (= v_~a~0_93 v_~a$mem_tmp~0_18) (= v_~a$r_buff0_thd4~0_61 (ite .cse2 v_~a$r_buff0_thd4~0_62 (ite (or (and .cse6 .cse7) .cse4 .cse5) v_~a$r_buff0_thd4~0_62 (ite (and (not .cse5) .cse8) 0 v_~a$r_buff0_thd4~0_62)))) (= v_~a$w_buff1~0_64 v_~a$w_buff1~0_63) (= v_~a~0_92 (ite .cse2 v_~a$mem_tmp~0_18 v_~__unbuffered_p3_EBX~0_10)) (= v_~a$r_buff1_thd4~0_59 (ite .cse2 v_~a$r_buff1_thd4~0_60 (ite (let ((.cse9 (= (mod v_~a$r_buff0_thd4~0_61 256) 0))) (or (and .cse9 .cse10) (and .cse6 .cse9) .cse5)) v_~a$r_buff1_thd4~0_60 0))))))) InVars {~a~0=v_~a~0_93, ~a$w_buff1~0=v_~a$w_buff1~0_64, ~a$w_buff0~0=v_~a$w_buff0~0_61, ~a$r_buff1_thd4~0=v_~a$r_buff1_thd4~0_60, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_148, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_133, ~a$r_buff0_thd4~0=v_~a$r_buff0_thd4~0_62} OutVars{~a$r_buff1_thd4~0=v_~a$r_buff1_thd4~0_59, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_147, ~__unbuffered_p3_EBX~0=v_~__unbuffered_p3_EBX~0_10, ~a$r_buff0_thd4~0=v_~a$r_buff0_thd4~0_61, P3Thread1of1ForFork2_#t~nondet4=|v_P3Thread1of1ForFork2_#t~nondet4_1|, ~a~0=v_~a~0_92, ~a$mem_tmp~0=v_~a$mem_tmp~0_18, ~weak$$choice0~0=v_~weak$$choice0~0_7, ~a$w_buff1~0=v_~a$w_buff1~0_63, ~a$flush_delayed~0=v_~a$flush_delayed~0_25, ~a$w_buff0~0=v_~a$w_buff0~0_60, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_132, ~weak$$choice2~0=v_~weak$$choice2~0_32, P3Thread1of1ForFork2_#t~nondet3=|v_P3Thread1of1ForFork2_#t~nondet3_1|} AuxVars[] AssignedVars[~a$r_buff1_thd4~0, ~a$w_buff0_used~0, ~__unbuffered_p3_EBX~0, ~a$r_buff0_thd4~0, P3Thread1of1ForFork2_#t~nondet4, ~a~0, ~a$mem_tmp~0, ~weak$$choice0~0, ~a$w_buff1~0, ~a$flush_delayed~0, ~a$w_buff0~0, ~a$w_buff1_used~0, ~weak$$choice2~0, P3Thread1of1ForFork2_#t~nondet3][78], [Black: 190#(and (= ~__unbuffered_cnt~0 0) (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256))), Black: 188#(< ~main$tmp_guard0~0 (+ 1 (* (div ~main$tmp_guard0~0 256) 256))), Black: 156#(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: 159#(and (not (= |ULTIMATE.start___VERIFIER_assert_#in~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)))), 59#L847true, 109#P0EXITtrue, 215#(and (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256)) (<= ~__unbuffered_cnt~0 1)), Black: 198#(< ~main$tmp_guard0~0 (+ 1 (* (div ~main$tmp_guard0~0 256) 256))), Black: 167#(= ~__unbuffered_p1_EAX~0 0), P2Thread1of1ForFork0InUse, P0Thread1of1ForFork1InUse, 116#L881true, P3Thread1of1ForFork2InUse, 112#L811true, P1Thread1of1ForFork3InUse, Black: 177#(= ~__unbuffered_p3_EAX~0 0), Black: 211#(< ~main$tmp_guard0~0 (+ 1 (* (div ~main$tmp_guard0~0 256) 256))), 19#L798true, Black: 217#(and (<= ~__unbuffered_cnt~0 2) (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256))), 230#(and (= ~a$w_buff1_used~0 0) (= ~a$w_buff0_used~0 0) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= ~a~0 0))), 202#(and (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256)) (<= ~__unbuffered_cnt~0 1))]) [2023-11-06 22:35:55,244 INFO L294 olderBase$Statistics]: this new event has 22 ancestors and is not cut-off event [2023-11-06 22:35:55,244 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is not cut-off event [2023-11-06 22:35:55,244 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is not cut-off event [2023-11-06 22:35:55,245 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is not cut-off event [2023-11-06 22:35:55,476 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([421] 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, P3Thread1of1ForFork2_#t~nondet4=|v_P3Thread1of1ForFork2_#t~nondet4_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, ~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, P3Thread1of1ForFork2_#t~nondet3=|v_P3Thread1of1ForFork2_#t~nondet3_1|} AuxVars[] AssignedVars[~a$r_buff1_thd4~0, ~a$w_buff0_used~0, ~__unbuffered_p3_EBX~0, ~a$r_buff0_thd4~0, P3Thread1of1ForFork2_#t~nondet4, ~a~0, ~a$mem_tmp~0, ~weak$$choice0~0, ~a$w_buff1~0, ~a$flush_delayed~0, ~a$w_buff0~0, ~a$w_buff1_used~0, ~weak$$choice2~0, P3Thread1of1ForFork2_#t~nondet3][78], [Black: 190#(and (= ~__unbuffered_cnt~0 0) (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256))), Black: 188#(< ~main$tmp_guard0~0 (+ 1 (* (div ~main$tmp_guard0~0 256) 256))), Black: 156#(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: 159#(and (not (= |ULTIMATE.start___VERIFIER_assert_#in~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)))), 59#L847true, 109#P0EXITtrue, Black: 202#(and (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256)) (<= ~__unbuffered_cnt~0 1)), Black: 167#(= ~__unbuffered_p1_EAX~0 0), P2Thread1of1ForFork0InUse, 217#(and (<= ~__unbuffered_cnt~0 2) (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256))), P0Thread1of1ForFork1InUse, 116#L881true, 115#P1EXITtrue, P3Thread1of1ForFork2InUse, 112#L811true, P1Thread1of1ForFork3InUse, Black: 177#(= ~__unbuffered_p3_EAX~0 0), 198#(< ~main$tmp_guard0~0 (+ 1 (* (div ~main$tmp_guard0~0 256) 256))), Black: 211#(< ~main$tmp_guard0~0 (+ 1 (* (div ~main$tmp_guard0~0 256) 256))), 230#(and (= ~a$w_buff1_used~0 0) (= ~a$w_buff0_used~0 0) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= ~a~0 0)))]) [2023-11-06 22:35:55,476 INFO L294 olderBase$Statistics]: this new event has 23 ancestors and is not cut-off event [2023-11-06 22:35:55,476 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is not cut-off event [2023-11-06 22:35:55,476 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is not cut-off event [2023-11-06 22:35:55,477 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is not cut-off event [2023-11-06 22:35:55,942 INFO L124 PetriNetUnfolderBase]: 12409/19768 cut-off events. [2023-11-06 22:35:55,942 INFO L125 PetriNetUnfolderBase]: For 43522/44758 co-relation queries the response was YES. [2023-11-06 22:35:56,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69486 conditions, 19768 events. 12409/19768 cut-off events. For 43522/44758 co-relation queries the response was YES. Maximal size of possible extension queue 1080. Compared 146743 event pairs, 2064 based on Foata normal form. 76/19372 useless extension candidates. Maximal degree in co-relation 69464. Up to 7999 conditions per place. [2023-11-06 22:35:56,080 INFO L140 encePairwiseOnDemand]: 238/248 looper letters, 132 selfloop transitions, 10 changer transitions 34/186 dead transitions. [2023-11-06 22:35:56,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 186 transitions, 1543 flow [2023-11-06 22:35:56,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:35:56,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:35:56,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 905 transitions. [2023-11-06 22:35:56,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5213133640552995 [2023-11-06 22:35:56,084 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 905 transitions. [2023-11-06 22:35:56,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 905 transitions. [2023-11-06 22:35:56,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:35:56,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 905 transitions. [2023-11-06 22:35:56,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 129.28571428571428) internal successors, (905), 7 states have internal predecessors, (905), 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 22:35:56,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 248.0) internal successors, (1984), 8 states have internal predecessors, (1984), 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 22:35:56,093 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 248.0) internal successors, (1984), 8 states have internal predecessors, (1984), 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 22:35:56,093 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 319 flow. Second operand 7 states and 905 transitions. [2023-11-06 22:35:56,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 186 transitions, 1543 flow [2023-11-06 22:35:57,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 186 transitions, 1410 flow, removed 36 selfloop flow, removed 3 redundant places. [2023-11-06 22:35:57,998 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 379 flow [2023-11-06 22:35:57,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=379, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2023-11-06 22:35:58,000 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 21 predicate places. [2023-11-06 22:35:58,000 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 379 flow [2023-11-06 22:35:58,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 116.75) internal successors, (934), 8 states have internal predecessors, (934), 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 22:35:58,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:35:58,001 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 22:35:58,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:35:58,001 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:35:58,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:35:58,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1949654212, now seen corresponding path program 2 times [2023-11-06 22:35:58,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:35:58,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840727920] [2023-11-06 22:35:58,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:35:58,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:35:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:59,040 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 22:35:59,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:35:59,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840727920] [2023-11-06 22:35:59,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840727920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:35:59,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:35:59,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:35:59,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682326794] [2023-11-06 22:35:59,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:35:59,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:35:59,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:35:59,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:35:59,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:35:59,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 248 [2023-11-06 22:35:59,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 379 flow. Second operand has 8 states, 8 states have (on average 115.75) internal successors, (926), 8 states have internal predecessors, (926), 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 22:35:59,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:35:59,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 248 [2023-11-06 22:35:59,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:03,316 INFO L124 PetriNetUnfolderBase]: 16722/27321 cut-off events. [2023-11-06 22:36:03,317 INFO L125 PetriNetUnfolderBase]: For 58565/60694 co-relation queries the response was YES. [2023-11-06 22:36:03,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105615 conditions, 27321 events. 16722/27321 cut-off events. For 58565/60694 co-relation queries the response was YES. Maximal size of possible extension queue 1560. Compared 221527 event pairs, 3559 based on Foata normal form. 573/27365 useless extension candidates. Maximal degree in co-relation 105589. Up to 11898 conditions per place. [2023-11-06 22:36:03,522 INFO L140 encePairwiseOnDemand]: 239/248 looper letters, 106 selfloop transitions, 11 changer transitions 63/190 dead transitions. [2023-11-06 22:36:03,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 190 transitions, 1585 flow [2023-11-06 22:36:03,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:36:03,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:36:03,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1001 transitions. [2023-11-06 22:36:03,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045362903225806 [2023-11-06 22:36:03,528 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1001 transitions. [2023-11-06 22:36:03,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1001 transitions. [2023-11-06 22:36:03,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:03,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1001 transitions. [2023-11-06 22:36:03,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 125.125) internal successors, (1001), 8 states have internal predecessors, (1001), 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 22:36:03,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 248.0) internal successors, (2232), 9 states have internal predecessors, (2232), 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 22:36:03,539 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 248.0) internal successors, (2232), 9 states have internal predecessors, (2232), 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 22:36:03,539 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 379 flow. Second operand 8 states and 1001 transitions. [2023-11-06 22:36:03,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 190 transitions, 1585 flow [2023-11-06 22:36:07,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 190 transitions, 1570 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-06 22:36:07,126 INFO L231 Difference]: Finished difference. Result has 74 places, 66 transitions, 470 flow [2023-11-06 22:36:07,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=470, PETRI_PLACES=74, PETRI_TRANSITIONS=66} [2023-11-06 22:36:07,127 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 29 predicate places. [2023-11-06 22:36:07,127 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 66 transitions, 470 flow [2023-11-06 22:36:07,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 115.75) internal successors, (926), 8 states have internal predecessors, (926), 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 22:36:07,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:07,128 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 22:36:07,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:36:07,128 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:36:07,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:07,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1401333394, now seen corresponding path program 3 times [2023-11-06 22:36:07,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:07,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187738050] [2023-11-06 22:36:07,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:07,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:07,468 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 22:36:07,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:07,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187738050] [2023-11-06 22:36:07,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187738050] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:36:07,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:36:07,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:36:07,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791711632] [2023-11-06 22:36:07,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:36:07,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:36:07,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:07,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:36:07,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:36:07,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 248 [2023-11-06 22:36:07,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 66 transitions, 470 flow. Second operand has 7 states, 7 states have (on average 117.14285714285714) internal successors, (820), 7 states have internal predecessors, (820), 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 22:36:07,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:07,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 248 [2023-11-06 22:36:07,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:10,480 INFO L124 PetriNetUnfolderBase]: 14066/22617 cut-off events. [2023-11-06 22:36:10,480 INFO L125 PetriNetUnfolderBase]: For 65194/66103 co-relation queries the response was YES. [2023-11-06 22:36:10,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95284 conditions, 22617 events. 14066/22617 cut-off events. For 65194/66103 co-relation queries the response was YES. Maximal size of possible extension queue 1304. Compared 178354 event pairs, 1983 based on Foata normal form. 181/22200 useless extension candidates. Maximal degree in co-relation 95255. Up to 8742 conditions per place. [2023-11-06 22:36:10,621 INFO L140 encePairwiseOnDemand]: 241/248 looper letters, 100 selfloop transitions, 18 changer transitions 9/137 dead transitions. [2023-11-06 22:36:10,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 137 transitions, 1135 flow [2023-11-06 22:36:10,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:36:10,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:36:10,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 880 transitions. [2023-11-06 22:36:10,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069124423963134 [2023-11-06 22:36:10,626 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 880 transitions. [2023-11-06 22:36:10,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 880 transitions. [2023-11-06 22:36:10,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:10,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 880 transitions. [2023-11-06 22:36:10,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 125.71428571428571) internal successors, (880), 7 states have internal predecessors, (880), 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 22:36:10,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 248.0) internal successors, (1984), 8 states have internal predecessors, (1984), 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 22:36:10,634 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 248.0) internal successors, (1984), 8 states have internal predecessors, (1984), 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 22:36:10,634 INFO L175 Difference]: Start difference. First operand has 74 places, 66 transitions, 470 flow. Second operand 7 states and 880 transitions. [2023-11-06 22:36:10,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 137 transitions, 1135 flow [2023-11-06 22:36:13,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 137 transitions, 1110 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-11-06 22:36:13,944 INFO L231 Difference]: Finished difference. Result has 73 places, 64 transitions, 468 flow [2023-11-06 22:36:13,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=468, PETRI_PLACES=73, PETRI_TRANSITIONS=64} [2023-11-06 22:36:13,945 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 28 predicate places. [2023-11-06 22:36:13,945 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 64 transitions, 468 flow [2023-11-06 22:36:13,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 117.14285714285714) internal successors, (820), 7 states have internal predecessors, (820), 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 22:36:13,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:13,946 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 22:36:13,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:36:13,946 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:36:13,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:13,947 INFO L85 PathProgramCache]: Analyzing trace with hash -193951166, now seen corresponding path program 1 times [2023-11-06 22:36:13,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:13,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799410170] [2023-11-06 22:36:13,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:13,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:14,208 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 22:36:14,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:14,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799410170] [2023-11-06 22:36:14,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799410170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:36:14,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:36:14,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:36:14,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351536454] [2023-11-06 22:36:14,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:36:14,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:36:14,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:14,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:36:14,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:36:14,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 248 [2023-11-06 22:36:14,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 64 transitions, 468 flow. Second operand has 5 states, 5 states have (on average 120.2) internal successors, (601), 5 states have internal predecessors, (601), 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 22:36:14,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:14,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 248 [2023-11-06 22:36:14,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:19,611 INFO L124 PetriNetUnfolderBase]: 22060/35735 cut-off events. [2023-11-06 22:36:19,612 INFO L125 PetriNetUnfolderBase]: For 130680/131787 co-relation queries the response was YES. [2023-11-06 22:36:19,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159539 conditions, 35735 events. 22060/35735 cut-off events. For 130680/131787 co-relation queries the response was YES. Maximal size of possible extension queue 2014. Compared 296452 event pairs, 5075 based on Foata normal form. 68/35262 useless extension candidates. Maximal degree in co-relation 159511. Up to 15690 conditions per place. [2023-11-06 22:36:19,814 INFO L140 encePairwiseOnDemand]: 244/248 looper letters, 80 selfloop transitions, 1 changer transitions 47/136 dead transitions. [2023-11-06 22:36:19,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 136 transitions, 1319 flow [2023-11-06 22:36:19,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:36:19,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:36:19,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 627 transitions. [2023-11-06 22:36:19,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5056451612903226 [2023-11-06 22:36:19,817 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 627 transitions. [2023-11-06 22:36:19,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 627 transitions. [2023-11-06 22:36:19,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:19,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 627 transitions. [2023-11-06 22:36:19,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.4) internal successors, (627), 5 states have internal predecessors, (627), 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 22:36:19,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 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 22:36:19,823 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 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 22:36:19,823 INFO L175 Difference]: Start difference. First operand has 73 places, 64 transitions, 468 flow. Second operand 5 states and 627 transitions. [2023-11-06 22:36:19,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 136 transitions, 1319 flow [2023-11-06 22:36:24,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 136 transitions, 1184 flow, removed 38 selfloop flow, removed 6 redundant places. [2023-11-06 22:36:24,986 INFO L231 Difference]: Finished difference. Result has 73 places, 64 transitions, 416 flow [2023-11-06 22:36:24,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=416, PETRI_PLACES=73, PETRI_TRANSITIONS=64} [2023-11-06 22:36:24,987 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 28 predicate places. [2023-11-06 22:36:24,987 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 64 transitions, 416 flow [2023-11-06 22:36:24,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 120.2) internal successors, (601), 5 states have internal predecessors, (601), 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 22:36:24,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:24,988 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 22:36:24,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:36:24,989 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:36:24,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:24,989 INFO L85 PathProgramCache]: Analyzing trace with hash 301354124, now seen corresponding path program 2 times [2023-11-06 22:36:24,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:24,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594492233] [2023-11-06 22:36:24,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:24,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:25,256 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 22:36:25,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:25,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594492233] [2023-11-06 22:36:25,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594492233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:36:25,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:36:25,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:36:25,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457414859] [2023-11-06 22:36:25,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:36:25,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:36:25,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:25,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:36:25,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:36:25,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 248 [2023-11-06 22:36:25,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 64 transitions, 416 flow. Second operand has 5 states, 5 states have (on average 120.2) internal successors, (601), 5 states have internal predecessors, (601), 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 22:36:25,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:25,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 248 [2023-11-06 22:36:25,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:30,205 INFO L124 PetriNetUnfolderBase]: 20399/32981 cut-off events. [2023-11-06 22:36:30,205 INFO L125 PetriNetUnfolderBase]: For 96262/97335 co-relation queries the response was YES. [2023-11-06 22:36:30,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137759 conditions, 32981 events. 20399/32981 cut-off events. For 96262/97335 co-relation queries the response was YES. Maximal size of possible extension queue 1786. Compared 269441 event pairs, 4463 based on Foata normal form. 236/32695 useless extension candidates. Maximal degree in co-relation 137737. Up to 16650 conditions per place. [2023-11-06 22:36:30,339 INFO L140 encePairwiseOnDemand]: 244/248 looper letters, 70 selfloop transitions, 1 changer transitions 61/140 dead transitions. [2023-11-06 22:36:30,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 140 transitions, 1224 flow [2023-11-06 22:36:30,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:36:30,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:36:30,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 632 transitions. [2023-11-06 22:36:30,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096774193548387 [2023-11-06 22:36:30,343 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 632 transitions. [2023-11-06 22:36:30,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 632 transitions. [2023-11-06 22:36:30,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:30,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 632 transitions. [2023-11-06 22:36:30,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.4) internal successors, (632), 5 states have internal predecessors, (632), 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 22:36:30,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 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 22:36:30,349 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 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 22:36:30,349 INFO L175 Difference]: Start difference. First operand has 73 places, 64 transitions, 416 flow. Second operand 5 states and 632 transitions. [2023-11-06 22:36:30,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 140 transitions, 1224 flow [2023-11-06 22:36:35,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 140 transitions, 1215 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-06 22:36:35,058 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 408 flow [2023-11-06 22:36:35,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=408, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2023-11-06 22:36:35,059 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 30 predicate places. [2023-11-06 22:36:35,059 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 408 flow [2023-11-06 22:36:35,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 120.2) internal successors, (601), 5 states have internal predecessors, (601), 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 22:36:35,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:35,060 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 22:36:35,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:36:35,061 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:36:35,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:35,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1357419478, now seen corresponding path program 3 times [2023-11-06 22:36:35,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:35,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617252710] [2023-11-06 22:36:35,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:35,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat