./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b026d1d-f68c-498f-a573-7c2125dcf72c/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b026d1d-f68c-498f-a573-7c2125dcf72c/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b026d1d-f68c-498f-a573-7c2125dcf72c/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b026d1d-f68c-498f-a573-7c2125dcf72c/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b026d1d-f68c-498f-a573-7c2125dcf72c/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b026d1d-f68c-498f-a573-7c2125dcf72c/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --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 47fde0ba5912e0415b0c299af0f3ae7b3e6a5b956bf726bb77299079d74126b4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:27:15,204 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:27:15,336 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b026d1d-f68c-498f-a573-7c2125dcf72c/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:27:15,347 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:27:15,348 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:27:15,386 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:27:15,388 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:27:15,389 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:27:15,390 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:27:15,395 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:27:15,396 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:27:15,397 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:27:15,398 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:27:15,399 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:27:15,400 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:27:15,400 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:27:15,401 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:27:15,401 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:27:15,402 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:27:15,402 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:27:15,403 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:27:15,403 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:27:15,404 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:27:15,404 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:27:15,405 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:27:15,406 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:27:15,406 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:27:15,407 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:27:15,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:27:15,408 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:27:15,409 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:27:15,409 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:27:15,410 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:27:15,410 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:27:15,410 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:27:15,411 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:27:15,411 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:27:15,411 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:27:15,411 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:27:15,412 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_1b026d1d-f68c-498f-a573-7c2125dcf72c/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b026d1d-f68c-498f-a573-7c2125dcf72c/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47fde0ba5912e0415b0c299af0f3ae7b3e6a5b956bf726bb77299079d74126b4 [2023-11-12 02:27:15,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:27:15,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:27:15,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:27:15,757 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:27:15,758 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:27:15,759 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b026d1d-f68c-498f-a573-7c2125dcf72c/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2023-11-12 02:27:19,008 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:27:19,310 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:27:19,318 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b026d1d-f68c-498f-a573-7c2125dcf72c/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2023-11-12 02:27:19,330 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b026d1d-f68c-498f-a573-7c2125dcf72c/bin/uautomizer-verify-uTZkv6EMXl/data/b0ac13c53/d2281aa741224b21b4b6dc882ff8cb84/FLAG9dae87ddc [2023-11-12 02:27:19,358 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b026d1d-f68c-498f-a573-7c2125dcf72c/bin/uautomizer-verify-uTZkv6EMXl/data/b0ac13c53/d2281aa741224b21b4b6dc882ff8cb84 [2023-11-12 02:27:19,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:27:19,368 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:27:19,371 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:27:19,372 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:27:19,377 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:27:19,378 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:27:19" (1/1) ... [2023-11-12 02:27:19,379 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a905a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:19, skipping insertion in model container [2023-11-12 02:27:19,380 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:27:19" (1/1) ... [2023-11-12 02:27:19,420 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:27:19,665 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_1b026d1d-f68c-498f-a573-7c2125dcf72c/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3336,3349] [2023-11-12 02:27:19,675 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:27:19,686 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:27:19,727 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_1b026d1d-f68c-498f-a573-7c2125dcf72c/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3336,3349] [2023-11-12 02:27:19,731 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:27:19,741 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:27:19,741 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:27:19,750 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:27:19,750 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:19 WrapperNode [2023-11-12 02:27:19,750 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:27:19,752 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:27:19,752 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:27:19,752 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:27:19,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:19" (1/1) ... [2023-11-12 02:27:19,773 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:19" (1/1) ... [2023-11-12 02:27:19,806 INFO L138 Inliner]: procedures = 27, calls = 75, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 180 [2023-11-12 02:27:19,806 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:27:19,807 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:27:19,807 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:27:19,807 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:27:19,822 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:19" (1/1) ... [2023-11-12 02:27:19,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:19" (1/1) ... [2023-11-12 02:27:19,828 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:19" (1/1) ... [2023-11-12 02:27:19,828 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:19" (1/1) ... [2023-11-12 02:27:19,840 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:19" (1/1) ... [2023-11-12 02:27:19,845 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:19" (1/1) ... [2023-11-12 02:27:19,848 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:19" (1/1) ... [2023-11-12 02:27:19,850 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:19" (1/1) ... [2023-11-12 02:27:19,855 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:27:19,856 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:27:19,856 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:27:19,856 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:27:19,857 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:19" (1/1) ... [2023-11-12 02:27:19,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:27:19,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b026d1d-f68c-498f-a573-7c2125dcf72c/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:27:19,898 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b026d1d-f68c-498f-a573-7c2125dcf72c/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:27:19,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b026d1d-f68c-498f-a573-7c2125dcf72c/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:27:19,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:27:19,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:27:19,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:27:19,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:27:19,943 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:27:19,943 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:27:19,943 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:27:19,943 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:27:19,944 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 02:27:19,944 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 02:27:19,944 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-12 02:27:19,944 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-12 02:27:19,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:27:19,945 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-12 02:27:19,945 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-12 02:27:19,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:27:19,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:27:19,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:27:19,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:27:19,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:27:19,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:27:19,948 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:27:20,079 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:27:20,081 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:27:20,514 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:27:20,644 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:27:20,645 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-12 02:27:20,647 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:27:20 BoogieIcfgContainer [2023-11-12 02:27:20,647 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:27:20,651 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:27:20,651 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:27:20,665 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:27:20,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:27:19" (1/3) ... [2023-11-12 02:27:20,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db7c033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:27:20, skipping insertion in model container [2023-11-12 02:27:20,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:19" (2/3) ... [2023-11-12 02:27:20,667 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db7c033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:27:20, skipping insertion in model container [2023-11-12 02:27:20,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:27:20" (3/3) ... [2023-11-12 02:27:20,668 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2023-11-12 02:27:20,679 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:27:20,693 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:27:20,693 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:27:20,693 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:27:20,844 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-11-12 02:27:20,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 203 transitions, 441 flow [2023-11-12 02:27:21,014 INFO L124 PetriNetUnfolderBase]: 14/198 cut-off events. [2023-11-12 02:27:21,014 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-12 02:27:21,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 198 events. 14/198 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 173 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 160. Up to 2 conditions per place. [2023-11-12 02:27:21,028 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 203 transitions, 441 flow [2023-11-12 02:27:21,045 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 183 transitions, 396 flow [2023-11-12 02:27:21,051 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:27:21,067 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 183 transitions, 396 flow [2023-11-12 02:27:21,070 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 183 transitions, 396 flow [2023-11-12 02:27:21,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 183 transitions, 396 flow [2023-11-12 02:27:21,157 INFO L124 PetriNetUnfolderBase]: 14/183 cut-off events. [2023-11-12 02:27:21,158 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-12 02:27:21,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 183 events. 14/183 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 170 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 160. Up to 2 conditions per place. [2023-11-12 02:27:21,169 INFO L119 LiptonReduction]: Number of co-enabled transitions 4924 [2023-11-12 02:27:32,059 INFO L134 LiptonReduction]: Checked pairs total: 6561 [2023-11-12 02:27:32,059 INFO L136 LiptonReduction]: Total number of compositions: 168 [2023-11-12 02:27:32,080 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:27:32,088 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=LoopHeads, 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;@36b7be42, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:27:32,088 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-12 02:27:32,098 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:27:32,099 INFO L124 PetriNetUnfolderBase]: 5/37 cut-off events. [2023-11-12 02:27:32,099 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-12 02:27:32,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:27:32,100 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, 1, 1, 1] [2023-11-12 02:27:32,101 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-12 02:27:32,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:32,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1007231839, now seen corresponding path program 1 times [2023-11-12 02:27:32,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:32,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915459477] [2023-11-12 02:27:32,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:32,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:32,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:27:32,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:32,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915459477] [2023-11-12 02:27:32,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915459477] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:32,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:27:32,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:27:32,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364136958] [2023-11-12 02:27:32,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:32,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:27:32,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:32,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:27:32,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:27:32,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 371 [2023-11-12 02:27:32,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 179.25) internal successors, (717), 4 states have internal predecessors, (717), 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) [2023-11-12 02:27:32,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:27:32,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 371 [2023-11-12 02:27:32,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:27:34,092 INFO L124 PetriNetUnfolderBase]: 5510/6994 cut-off events. [2023-11-12 02:27:34,093 INFO L125 PetriNetUnfolderBase]: For 302/302 co-relation queries the response was YES. [2023-11-12 02:27:34,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14642 conditions, 6994 events. 5510/6994 cut-off events. For 302/302 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 24335 event pairs, 3165 based on Foata normal form. 0/5489 useless extension candidates. Maximal degree in co-relation 12560. Up to 5632 conditions per place. [2023-11-12 02:27:34,155 INFO L140 encePairwiseOnDemand]: 367/371 looper letters, 56 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2023-11-12 02:27:34,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 59 transitions, 278 flow [2023-11-12 02:27:34,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:27:34,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:27:34,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 744 transitions. [2023-11-12 02:27:34,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5013477088948787 [2023-11-12 02:27:34,181 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 744 transitions. [2023-11-12 02:27:34,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 744 transitions. [2023-11-12 02:27:34,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:27:34,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 744 transitions. [2023-11-12 02:27:34,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 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) [2023-11-12 02:27:34,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 371.0) internal successors, (1855), 5 states have internal predecessors, (1855), 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) [2023-11-12 02:27:34,210 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 371.0) internal successors, (1855), 5 states have internal predecessors, (1855), 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) [2023-11-12 02:27:34,212 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 106 flow. Second operand 4 states and 744 transitions. [2023-11-12 02:27:34,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 59 transitions, 278 flow [2023-11-12 02:27:34,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 59 transitions, 250 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-11-12 02:27:34,250 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 100 flow [2023-11-12 02:27:34,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2023-11-12 02:27:34,257 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -6 predicate places. [2023-11-12 02:27:34,258 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 100 flow [2023-11-12 02:27:34,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 179.25) internal successors, (717), 4 states have internal predecessors, (717), 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) [2023-11-12 02:27:34,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:27:34,259 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, 1, 1, 1, 1] [2023-11-12 02:27:34,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:27:34,261 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-12 02:27:34,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:34,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1365547362, now seen corresponding path program 1 times [2023-11-12 02:27:34,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:34,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96174654] [2023-11-12 02:27:34,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:34,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:34,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:27:34,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:34,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96174654] [2023-11-12 02:27:34,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96174654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:34,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:27:34,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:27:34,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084646082] [2023-11-12 02:27:34,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:34,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:27:34,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:34,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:27:34,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:27:34,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 371 [2023-11-12 02:27:34,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 179.5) internal successors, (718), 4 states have internal predecessors, (718), 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) [2023-11-12 02:27:34,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:27:34,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 371 [2023-11-12 02:27:34,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:27:35,755 INFO L124 PetriNetUnfolderBase]: 6702/8498 cut-off events. [2023-11-12 02:27:35,755 INFO L125 PetriNetUnfolderBase]: For 1706/1706 co-relation queries the response was YES. [2023-11-12 02:27:35,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19062 conditions, 8498 events. 6702/8498 cut-off events. For 1706/1706 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 30416 event pairs, 4005 based on Foata normal form. 0/6741 useless extension candidates. Maximal degree in co-relation 6141. Up to 6994 conditions per place. [2023-11-12 02:27:35,823 INFO L140 encePairwiseOnDemand]: 367/371 looper letters, 58 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2023-11-12 02:27:35,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 61 transitions, 280 flow [2023-11-12 02:27:35,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:27:35,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:27:35,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 744 transitions. [2023-11-12 02:27:35,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5013477088948787 [2023-11-12 02:27:35,870 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 744 transitions. [2023-11-12 02:27:35,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 744 transitions. [2023-11-12 02:27:35,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:27:35,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 744 transitions. [2023-11-12 02:27:35,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 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) [2023-11-12 02:27:35,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 371.0) internal successors, (1855), 5 states have internal predecessors, (1855), 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) [2023-11-12 02:27:35,880 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 371.0) internal successors, (1855), 5 states have internal predecessors, (1855), 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) [2023-11-12 02:27:35,885 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 100 flow. Second operand 4 states and 744 transitions. [2023-11-12 02:27:35,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 61 transitions, 280 flow [2023-11-12 02:27:35,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 61 transitions, 270 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-12 02:27:35,891 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 108 flow [2023-11-12 02:27:35,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2023-11-12 02:27:35,892 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -4 predicate places. [2023-11-12 02:27:35,892 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 108 flow [2023-11-12 02:27:35,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 179.5) internal successors, (718), 4 states have internal predecessors, (718), 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) [2023-11-12 02:27:35,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:27:35,894 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, 1, 1, 1, 1, 1] [2023-11-12 02:27:35,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:27:35,894 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-12 02:27:35,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:35,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1516659146, now seen corresponding path program 1 times [2023-11-12 02:27:35,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:35,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232434488] [2023-11-12 02:27:35,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:35,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:36,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:27:36,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:36,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232434488] [2023-11-12 02:27:36,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232434488] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:36,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:27:36,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:27:36,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131366726] [2023-11-12 02:27:36,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:36,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:27:36,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:36,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:27:36,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:27:36,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 371 [2023-11-12 02:27:36,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 179.75) internal successors, (719), 4 states have internal predecessors, (719), 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) [2023-11-12 02:27:36,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:27:36,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 371 [2023-11-12 02:27:36,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:27:37,815 INFO L124 PetriNetUnfolderBase]: 8892/11260 cut-off events. [2023-11-12 02:27:37,815 INFO L125 PetriNetUnfolderBase]: For 2981/2981 co-relation queries the response was YES. [2023-11-12 02:27:37,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26391 conditions, 11260 events. 8892/11260 cut-off events. For 2981/2981 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 42092 event pairs, 4945 based on Foata normal form. 0/9117 useless extension candidates. Maximal degree in co-relation 9874. Up to 8498 conditions per place. [2023-11-12 02:27:37,906 INFO L140 encePairwiseOnDemand]: 367/371 looper letters, 61 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-11-12 02:27:37,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 64 transitions, 304 flow [2023-11-12 02:27:37,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:27:37,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:27:37,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 745 transitions. [2023-11-12 02:27:37,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020215633423181 [2023-11-12 02:27:37,911 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 745 transitions. [2023-11-12 02:27:37,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 745 transitions. [2023-11-12 02:27:37,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:27:37,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 745 transitions. [2023-11-12 02:27:37,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 186.25) internal successors, (745), 4 states have internal predecessors, (745), 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) [2023-11-12 02:27:37,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 371.0) internal successors, (1855), 5 states have internal predecessors, (1855), 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) [2023-11-12 02:27:37,922 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 371.0) internal successors, (1855), 5 states have internal predecessors, (1855), 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) [2023-11-12 02:27:37,922 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 108 flow. Second operand 4 states and 745 transitions. [2023-11-12 02:27:37,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 64 transitions, 304 flow [2023-11-12 02:27:37,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 64 transitions, 294 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-12 02:27:37,928 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 116 flow [2023-11-12 02:27:37,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=116, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2023-11-12 02:27:37,930 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -2 predicate places. [2023-11-12 02:27:37,934 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 116 flow [2023-11-12 02:27:37,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 179.75) internal successors, (719), 4 states have internal predecessors, (719), 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) [2023-11-12 02:27:37,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:27:37,937 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, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:37,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:27:37,938 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-12 02:27:37,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:37,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1879118698, now seen corresponding path program 1 times [2023-11-12 02:27:37,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:37,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821948931] [2023-11-12 02:27:37,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:37,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:38,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:27:38,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:38,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821948931] [2023-11-12 02:27:38,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821948931] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:38,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:27:38,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:27:38,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140775584] [2023-11-12 02:27:38,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:38,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:27:38,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:38,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:27:38,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:27:38,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 371 [2023-11-12 02:27:38,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 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) [2023-11-12 02:27:38,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:27:38,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 371 [2023-11-12 02:27:38,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:27:40,299 INFO L124 PetriNetUnfolderBase]: 11618/14686 cut-off events. [2023-11-12 02:27:40,299 INFO L125 PetriNetUnfolderBase]: For 5912/5912 co-relation queries the response was YES. [2023-11-12 02:27:40,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37018 conditions, 14686 events. 11618/14686 cut-off events. For 5912/5912 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 56723 event pairs, 6749 based on Foata normal form. 0/12113 useless extension candidates. Maximal degree in co-relation 12691. Up to 11260 conditions per place. [2023-11-12 02:27:40,416 INFO L140 encePairwiseOnDemand]: 367/371 looper letters, 63 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2023-11-12 02:27:40,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 66 transitions, 324 flow [2023-11-12 02:27:40,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:27:40,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:27:40,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 745 transitions. [2023-11-12 02:27:40,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020215633423181 [2023-11-12 02:27:40,422 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 745 transitions. [2023-11-12 02:27:40,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 745 transitions. [2023-11-12 02:27:40,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:27:40,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 745 transitions. [2023-11-12 02:27:40,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 186.25) internal successors, (745), 4 states have internal predecessors, (745), 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) [2023-11-12 02:27:40,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 371.0) internal successors, (1855), 5 states have internal predecessors, (1855), 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) [2023-11-12 02:27:40,434 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 371.0) internal successors, (1855), 5 states have internal predecessors, (1855), 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) [2023-11-12 02:27:40,528 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 116 flow. Second operand 4 states and 745 transitions. [2023-11-12 02:27:40,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 66 transitions, 324 flow [2023-11-12 02:27:40,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 66 transitions, 314 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-12 02:27:40,546 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 124 flow [2023-11-12 02:27:40,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2023-11-12 02:27:40,549 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2023-11-12 02:27:40,549 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 124 flow [2023-11-12 02:27:40,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 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) [2023-11-12 02:27:40,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:27:40,551 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:40,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:27:40,551 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-12 02:27:40,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:40,553 INFO L85 PathProgramCache]: Analyzing trace with hash -594520058, now seen corresponding path program 1 times [2023-11-12 02:27:40,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:40,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175156580] [2023-11-12 02:27:40,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:40,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:40,785 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:27:40,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:40,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175156580] [2023-11-12 02:27:40,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175156580] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:40,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:27:40,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:27:40,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764299870] [2023-11-12 02:27:40,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:40,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:27:40,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:40,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:27:40,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:27:40,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 371 [2023-11-12 02:27:40,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 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) [2023-11-12 02:27:40,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:27:40,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 371 [2023-11-12 02:27:40,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:27:42,792 INFO L124 PetriNetUnfolderBase]: 11618/14687 cut-off events. [2023-11-12 02:27:42,792 INFO L125 PetriNetUnfolderBase]: For 6621/6621 co-relation queries the response was YES. [2023-11-12 02:27:42,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39029 conditions, 14687 events. 11618/14687 cut-off events. For 6621/6621 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 55405 event pairs, 9045 based on Foata normal form. 0/12114 useless extension candidates. Maximal degree in co-relation 13469. Up to 14687 conditions per place. [2023-11-12 02:27:42,886 INFO L140 encePairwiseOnDemand]: 368/371 looper letters, 41 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-11-12 02:27:42,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 212 flow [2023-11-12 02:27:42,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:27:42,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:27:42,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 547 transitions. [2023-11-12 02:27:42,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4914645103324349 [2023-11-12 02:27:42,890 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 547 transitions. [2023-11-12 02:27:42,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 547 transitions. [2023-11-12 02:27:42,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:27:42,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 547 transitions. [2023-11-12 02:27:42,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 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) [2023-11-12 02:27:42,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 371.0) internal successors, (1484), 4 states have internal predecessors, (1484), 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) [2023-11-12 02:27:42,898 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 371.0) internal successors, (1484), 4 states have internal predecessors, (1484), 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) [2023-11-12 02:27:42,898 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 124 flow. Second operand 3 states and 547 transitions. [2023-11-12 02:27:42,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 212 flow [2023-11-12 02:27:42,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 206 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-12 02:27:42,942 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 130 flow [2023-11-12 02:27:42,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2023-11-12 02:27:42,943 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 1 predicate places. [2023-11-12 02:27:42,943 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 130 flow [2023-11-12 02:27:42,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 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) [2023-11-12 02:27:42,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:27:42,944 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:42,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:27:42,945 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-12 02:27:42,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:42,945 INFO L85 PathProgramCache]: Analyzing trace with hash -50210198, now seen corresponding path program 1 times [2023-11-12 02:27:42,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:42,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256980474] [2023-11-12 02:27:42,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:42,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:43,795 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:27:43,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:43,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256980474] [2023-11-12 02:27:43,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256980474] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:27:43,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814567238] [2023-11-12 02:27:43,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:43,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:27:43,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b026d1d-f68c-498f-a573-7c2125dcf72c/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:27:43,805 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b026d1d-f68c-498f-a573-7c2125dcf72c/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:27:43,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b026d1d-f68c-498f-a573-7c2125dcf72c/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:27:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:44,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-12 02:27:44,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:44,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:27:44,427 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2023-11-12 02:27:44,586 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-12 02:27:44,654 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:27:44,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:27:45,856 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:27:45,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814567238] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:27:45,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:27:45,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 8] total 22 [2023-11-12 02:27:45,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926698716] [2023-11-12 02:27:45,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:27:45,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-12 02:27:45,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:45,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-12 02:27:45,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=398, Unknown=3, NotChecked=0, Total=506 [2023-11-12 02:27:46,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 371 [2023-11-12 02:27:46,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 130 flow. Second operand has 23 states, 23 states have (on average 136.7391304347826) internal successors, (3145), 23 states have internal predecessors, (3145), 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) [2023-11-12 02:27:46,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:27:46,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 371 [2023-11-12 02:27:46,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand