./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c --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_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/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_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/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_079f2408-695b-42b0-b447-c067c73a8747/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 65bf47faf943da19c0d2d15e35f35ceed9dd68ed50ac4355a0589bd57bf3d155 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:08:28,754 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:08:28,840 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:08:28,846 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:08:28,847 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:08:28,875 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:08:28,876 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:08:28,877 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:08:28,878 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:08:28,878 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:08:28,879 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:08:28,880 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:08:28,880 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:08:28,881 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:08:28,881 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:08:28,882 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:08:28,882 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:08:28,883 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:08:28,883 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:08:28,884 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:08:28,884 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:08:28,885 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:08:28,885 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:08:28,886 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:08:28,886 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:08:28,887 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:08:28,887 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:08:28,887 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:08:28,888 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:08:28,888 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:08:28,889 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:08:28,889 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:08:28,889 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:08:28,890 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:08:28,890 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:08:28,890 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:08:28,890 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:08:28,891 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:08:28,891 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:08:28,891 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_079f2408-695b-42b0-b447-c067c73a8747/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65bf47faf943da19c0d2d15e35f35ceed9dd68ed50ac4355a0589bd57bf3d155 [2023-11-06 22:08:29,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:08:29,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:08:29,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:08:29,238 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:08:29,238 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:08:29,240 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2023-11-06 22:08:32,464 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:08:32,693 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:08:32,693 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2023-11-06 22:08:32,702 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/data/b593ac23d/b17b9de0653c4097ad64d632f0d547fe/FLAG806f39330 [2023-11-06 22:08:32,716 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/data/b593ac23d/b17b9de0653c4097ad64d632f0d547fe [2023-11-06 22:08:32,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:08:32,720 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:08:32,721 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:08:32,722 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:08:32,730 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:08:32,730 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:08:32" (1/1) ... [2023-11-06 22:08:32,732 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eb708a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:32, skipping insertion in model container [2023-11-06 22:08:32,732 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:08:32" (1/1) ... [2023-11-06 22:08:32,767 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:08:32,975 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_079f2408-695b-42b0-b447-c067c73a8747/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c[2476,2489] [2023-11-06 22:08:32,993 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:08:33,004 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:08:33,035 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_079f2408-695b-42b0-b447-c067c73a8747/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c[2476,2489] [2023-11-06 22:08:33,037 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:08:33,045 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:08:33,045 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:08:33,053 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:08:33,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:33 WrapperNode [2023-11-06 22:08:33,054 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:08:33,055 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:08:33,055 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:08:33,055 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:08:33,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:33" (1/1) ... [2023-11-06 22:08:33,070 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:33" (1/1) ... [2023-11-06 22:08:33,094 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 118 [2023-11-06 22:08:33,094 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:08:33,095 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:08:33,095 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:08:33,096 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:08:33,104 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:33" (1/1) ... [2023-11-06 22:08:33,104 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:33" (1/1) ... [2023-11-06 22:08:33,108 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:33" (1/1) ... [2023-11-06 22:08:33,108 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:33" (1/1) ... [2023-11-06 22:08:33,116 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:33" (1/1) ... [2023-11-06 22:08:33,120 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:33" (1/1) ... [2023-11-06 22:08:33,123 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:33" (1/1) ... [2023-11-06 22:08:33,124 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:33" (1/1) ... [2023-11-06 22:08:33,128 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:08:33,129 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:08:33,129 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:08:33,129 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:08:33,130 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:33" (1/1) ... [2023-11-06 22:08:33,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:08:33,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:33,167 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:08:33,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:08:33,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:08:33,210 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:08:33,210 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:08:33,210 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:08:33,211 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:08:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:08:33,211 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:08:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-06 22:08:33,212 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-06 22:08:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:08:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:08:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:08:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:08:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:08:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:08:33,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:08:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:08:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:08:33,216 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 22:08:33,331 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:08:33,333 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:08:33,602 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:08:33,680 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:08:33,680 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 22:08:33,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:08:33 BoogieIcfgContainer [2023-11-06 22:08:33,684 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:08:33,697 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:08:33,698 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:08:33,702 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:08:33,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:08:32" (1/3) ... [2023-11-06 22:08:33,703 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6afbcca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:08:33, skipping insertion in model container [2023-11-06 22:08:33,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:33" (2/3) ... [2023-11-06 22:08:33,704 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6afbcca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:08:33, skipping insertion in model container [2023-11-06 22:08:33,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:08:33" (3/3) ... [2023-11-06 22:08:33,705 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2023-11-06 22:08:33,713 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:08:33,721 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:08:33,722 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:08:33,722 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:08:33,825 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-06 22:08:33,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 125 transitions, 278 flow [2023-11-06 22:08:33,992 INFO L124 PetriNetUnfolderBase]: 9/121 cut-off events. [2023-11-06 22:08:33,993 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 22:08:33,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 121 events. 9/121 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 106 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2023-11-06 22:08:33,999 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 125 transitions, 278 flow [2023-11-06 22:08:34,006 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 108 transitions, 240 flow [2023-11-06 22:08:34,012 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:08:34,033 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 112 places, 108 transitions, 240 flow [2023-11-06 22:08:34,036 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 112 places, 108 transitions, 240 flow [2023-11-06 22:08:34,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 108 transitions, 240 flow [2023-11-06 22:08:34,073 INFO L124 PetriNetUnfolderBase]: 9/108 cut-off events. [2023-11-06 22:08:34,073 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 22:08:34,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 108 events. 9/108 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 105 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2023-11-06 22:08:34,079 INFO L119 LiptonReduction]: Number of co-enabled transitions 2904 [2023-11-06 22:08:37,679 INFO L134 LiptonReduction]: Checked pairs total: 2708 [2023-11-06 22:08:37,679 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-11-06 22:08:37,712 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:08:37,720 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;@1d2fdccf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:08:37,720 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-06 22:08:37,735 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:08:37,739 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2023-11-06 22:08:37,739 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 22:08:37,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:37,740 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] [2023-11-06 22:08:37,741 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 2 more)] === [2023-11-06 22:08:37,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:37,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1637785163, now seen corresponding path program 1 times [2023-11-06 22:08:37,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:37,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244749638] [2023-11-06 22:08:37,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:37,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:38,220 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 22:08:38,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:38,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244749638] [2023-11-06 22:08:38,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244749638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:38,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:38,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:08:38,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156790069] [2023-11-06 22:08:38,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:38,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:38,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:38,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:38,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:38,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 211 [2023-11-06 22:08:38,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 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 22:08:38,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:38,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 211 [2023-11-06 22:08:38,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:38,666 INFO L124 PetriNetUnfolderBase]: 1537/1954 cut-off events. [2023-11-06 22:08:38,667 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2023-11-06 22:08:38,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4056 conditions, 1954 events. 1537/1954 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6396 event pairs, 141 based on Foata normal form. 1/1139 useless extension candidates. Maximal degree in co-relation 3091. Up to 1733 conditions per place. [2023-11-06 22:08:38,698 INFO L140 encePairwiseOnDemand]: 205/211 looper letters, 41 selfloop transitions, 5 changer transitions 1/51 dead transitions. [2023-11-06 22:08:38,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 51 transitions, 241 flow [2023-11-06 22:08:38,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:38,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:08:38,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2023-11-06 22:08:38,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5734597156398105 [2023-11-06 22:08:38,723 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 363 transitions. [2023-11-06 22:08:38,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 363 transitions. [2023-11-06 22:08:38,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:38,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 363 transitions. [2023-11-06 22:08:38,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 22:08:38,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 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 22:08:38,744 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 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 22:08:38,746 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 82 flow. Second operand 3 states and 363 transitions. [2023-11-06 22:08:38,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 51 transitions, 241 flow [2023-11-06 22:08:38,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 51 transitions, 211 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-06 22:08:38,757 INFO L231 Difference]: Finished difference. Result has 33 places, 33 transitions, 99 flow [2023-11-06 22:08:38,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=33, PETRI_TRANSITIONS=33} [2023-11-06 22:08:38,767 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -5 predicate places. [2023-11-06 22:08:38,767 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 33 transitions, 99 flow [2023-11-06 22:08:38,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 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 22:08:38,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:38,769 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 22:08:38,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:08:38,770 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 2 more)] === [2023-11-06 22:08:38,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:38,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1585025420, now seen corresponding path program 1 times [2023-11-06 22:08:38,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:38,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630323273] [2023-11-06 22:08:38,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:38,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:38,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:38,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:38,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630323273] [2023-11-06 22:08:38,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630323273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:38,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:38,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:08:38,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075676379] [2023-11-06 22:08:38,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:38,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:38,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:38,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:38,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:38,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 211 [2023-11-06 22:08:38,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 33 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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 22:08:38,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:38,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 211 [2023-11-06 22:08:38,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:39,303 INFO L124 PetriNetUnfolderBase]: 1461/1943 cut-off events. [2023-11-06 22:08:39,303 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-11-06 22:08:39,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4755 conditions, 1943 events. 1461/1943 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 7249 event pairs, 398 based on Foata normal form. 80/2023 useless extension candidates. Maximal degree in co-relation 1644. Up to 1087 conditions per place. [2023-11-06 22:08:39,322 INFO L140 encePairwiseOnDemand]: 208/211 looper letters, 43 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2023-11-06 22:08:39,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 50 transitions, 235 flow [2023-11-06 22:08:39,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:39,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:08:39,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2023-11-06 22:08:39,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5718799368088467 [2023-11-06 22:08:39,328 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 362 transitions. [2023-11-06 22:08:39,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 362 transitions. [2023-11-06 22:08:39,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:39,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 362 transitions. [2023-11-06 22:08:39,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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 22:08:39,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 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 22:08:39,340 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 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 22:08:39,341 INFO L175 Difference]: Start difference. First operand has 33 places, 33 transitions, 99 flow. Second operand 3 states and 362 transitions. [2023-11-06 22:08:39,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 50 transitions, 235 flow [2023-11-06 22:08:39,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 50 transitions, 231 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:08:39,349 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 107 flow [2023-11-06 22:08:39,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2023-11-06 22:08:39,350 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2023-11-06 22:08:39,351 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 107 flow [2023-11-06 22:08:39,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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 22:08:39,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:39,351 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 22:08:39,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:08:39,352 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 2 more)] === [2023-11-06 22:08:39,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:39,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1012498757, now seen corresponding path program 1 times [2023-11-06 22:08:39,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:39,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694104478] [2023-11-06 22:08:39,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:39,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:39,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:39,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:39,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694104478] [2023-11-06 22:08:39,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694104478] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:08:39,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924829229] [2023-11-06 22:08:39,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:39,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:39,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:39,499 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:08:39,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:08:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:39,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:08:39,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:39,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:39,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:08:39,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:39,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924829229] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:08:39,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:08:39,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-11-06 22:08:39,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131059148] [2023-11-06 22:08:39,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:08:39,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:08:39,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:39,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:08:39,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:08:39,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 211 [2023-11-06 22:08:39,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 107 flow. Second operand has 8 states, 8 states have (on average 98.75) internal successors, (790), 8 states have internal predecessors, (790), 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 22:08:39,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:39,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 211 [2023-11-06 22:08:39,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:40,460 INFO L124 PetriNetUnfolderBase]: 2437/3309 cut-off events. [2023-11-06 22:08:40,461 INFO L125 PetriNetUnfolderBase]: For 1733/1733 co-relation queries the response was YES. [2023-11-06 22:08:40,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8588 conditions, 3309 events. 2437/3309 cut-off events. For 1733/1733 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 14635 event pairs, 404 based on Foata normal form. 80/3389 useless extension candidates. Maximal degree in co-relation 3233. Up to 1222 conditions per place. [2023-11-06 22:08:40,547 INFO L140 encePairwiseOnDemand]: 205/211 looper letters, 104 selfloop transitions, 10 changer transitions 0/116 dead transitions. [2023-11-06 22:08:40,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 116 transitions, 607 flow [2023-11-06 22:08:40,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:08:40,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:08:40,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 770 transitions. [2023-11-06 22:08:40,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5213270142180095 [2023-11-06 22:08:40,552 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 770 transitions. [2023-11-06 22:08:40,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 770 transitions. [2023-11-06 22:08:40,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:40,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 770 transitions. [2023-11-06 22:08:40,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 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 22:08:40,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 211.0) internal successors, (1688), 8 states have internal predecessors, (1688), 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 22:08:40,562 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 211.0) internal successors, (1688), 8 states have internal predecessors, (1688), 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 22:08:40,563 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 107 flow. Second operand 7 states and 770 transitions. [2023-11-06 22:08:40,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 116 transitions, 607 flow [2023-11-06 22:08:40,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 116 transitions, 598 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:08:40,571 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 176 flow [2023-11-06 22:08:40,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=176, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2023-11-06 22:08:40,573 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2023-11-06 22:08:40,573 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 176 flow [2023-11-06 22:08:40,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 98.75) internal successors, (790), 8 states have internal predecessors, (790), 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 22:08:40,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:40,575 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 22:08:40,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:08:40,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:40,782 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 2 more)] === [2023-11-06 22:08:40,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:40,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1945113172, now seen corresponding path program 1 times [2023-11-06 22:08:40,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:40,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010759764] [2023-11-06 22:08:40,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:40,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:40,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:40,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:40,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010759764] [2023-11-06 22:08:40,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010759764] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:40,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:40,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:08:40,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928292926] [2023-11-06 22:08:40,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:40,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:40,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:40,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:40,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:40,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 211 [2023-11-06 22:08:40,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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 22:08:40,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:40,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 211 [2023-11-06 22:08:40,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:41,247 INFO L124 PetriNetUnfolderBase]: 1413/1960 cut-off events. [2023-11-06 22:08:41,247 INFO L125 PetriNetUnfolderBase]: For 3359/3491 co-relation queries the response was YES. [2023-11-06 22:08:41,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6424 conditions, 1960 events. 1413/1960 cut-off events. For 3359/3491 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8176 event pairs, 435 based on Foata normal form. 208/2141 useless extension candidates. Maximal degree in co-relation 2777. Up to 1327 conditions per place. [2023-11-06 22:08:41,270 INFO L140 encePairwiseOnDemand]: 208/211 looper letters, 50 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2023-11-06 22:08:41,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 59 transitions, 339 flow [2023-11-06 22:08:41,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:41,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:08:41,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2023-11-06 22:08:41,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5781990521327014 [2023-11-06 22:08:41,273 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2023-11-06 22:08:41,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2023-11-06 22:08:41,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:41,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2023-11-06 22:08:41,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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 22:08:41,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 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 22:08:41,278 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 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 22:08:41,278 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 176 flow. Second operand 3 states and 366 transitions. [2023-11-06 22:08:41,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 59 transitions, 339 flow [2023-11-06 22:08:41,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 59 transitions, 329 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-06 22:08:41,291 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 173 flow [2023-11-06 22:08:41,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2023-11-06 22:08:41,292 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 9 predicate places. [2023-11-06 22:08:41,293 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 173 flow [2023-11-06 22:08:41,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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 22:08:41,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:41,293 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 22:08:41,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:08:41,294 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 2 more)] === [2023-11-06 22:08:41,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:41,294 INFO L85 PathProgramCache]: Analyzing trace with hash 68813868, now seen corresponding path program 1 times [2023-11-06 22:08:41,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:41,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950396717] [2023-11-06 22:08:41,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:41,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:41,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:41,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:41,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950396717] [2023-11-06 22:08:41,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950396717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:41,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:41,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:08:41,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850736201] [2023-11-06 22:08:41,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:41,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:08:41,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:41,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:08:41,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:08:41,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 211 [2023-11-06 22:08:41,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 173 flow. Second operand has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 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 22:08:41,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:41,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 211 [2023-11-06 22:08:41,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:41,976 INFO L124 PetriNetUnfolderBase]: 1970/2724 cut-off events. [2023-11-06 22:08:41,977 INFO L125 PetriNetUnfolderBase]: For 4902/5075 co-relation queries the response was YES. [2023-11-06 22:08:41,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8647 conditions, 2724 events. 1970/2724 cut-off events. For 4902/5075 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12033 event pairs, 538 based on Foata normal form. 197/2883 useless extension candidates. Maximal degree in co-relation 4405. Up to 1824 conditions per place. [2023-11-06 22:08:42,000 INFO L140 encePairwiseOnDemand]: 205/211 looper letters, 62 selfloop transitions, 4 changer transitions 15/85 dead transitions. [2023-11-06 22:08:42,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 85 transitions, 478 flow [2023-11-06 22:08:42,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:08:42,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:08:42,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 559 transitions. [2023-11-06 22:08:42,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5298578199052133 [2023-11-06 22:08:42,004 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 559 transitions. [2023-11-06 22:08:42,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 559 transitions. [2023-11-06 22:08:42,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:42,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 559 transitions. [2023-11-06 22:08:42,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.8) internal successors, (559), 5 states have internal predecessors, (559), 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 22:08:42,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:08:42,012 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:08:42,012 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 173 flow. Second operand 5 states and 559 transitions. [2023-11-06 22:08:42,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 85 transitions, 478 flow [2023-11-06 22:08:42,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 85 transitions, 472 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:08:42,025 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 182 flow [2023-11-06 22:08:42,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2023-11-06 22:08:42,028 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2023-11-06 22:08:42,028 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 182 flow [2023-11-06 22:08:42,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 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 22:08:42,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:42,029 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 22:08:42,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:08:42,029 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 2 more)] === [2023-11-06 22:08:42,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:42,030 INFO L85 PathProgramCache]: Analyzing trace with hash 644711400, now seen corresponding path program 2 times [2023-11-06 22:08:42,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:42,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684583236] [2023-11-06 22:08:42,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:42,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:42,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:42,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:42,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684583236] [2023-11-06 22:08:42,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684583236] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:08:42,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886321471] [2023-11-06 22:08:42,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:08:42,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:42,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:42,133 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:08:42,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:08:42,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:08:42,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:08:42,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:08:42,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:42,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:42,308 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:08:42,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:42,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886321471] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:08:42,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:08:42,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-11-06 22:08:42,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580689915] [2023-11-06 22:08:42,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:08:42,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:08:42,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:42,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:08:42,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:08:42,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 211 [2023-11-06 22:08:42,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 182 flow. Second operand has 8 states, 8 states have (on average 99.125) internal successors, (793), 8 states have internal predecessors, (793), 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 22:08:42,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:42,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 211 [2023-11-06 22:08:42,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:43,047 INFO L124 PetriNetUnfolderBase]: 2529/3446 cut-off events. [2023-11-06 22:08:43,047 INFO L125 PetriNetUnfolderBase]: For 6317/6381 co-relation queries the response was YES. [2023-11-06 22:08:43,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11782 conditions, 3446 events. 2529/3446 cut-off events. For 6317/6381 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 15369 event pairs, 403 based on Foata normal form. 152/3598 useless extension candidates. Maximal degree in co-relation 6608. Up to 1204 conditions per place. [2023-11-06 22:08:43,078 INFO L140 encePairwiseOnDemand]: 205/211 looper letters, 113 selfloop transitions, 18 changer transitions 3/136 dead transitions. [2023-11-06 22:08:43,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 136 transitions, 922 flow [2023-11-06 22:08:43,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:08:43,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:08:43,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 762 transitions. [2023-11-06 22:08:43,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159106296547055 [2023-11-06 22:08:43,083 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 762 transitions. [2023-11-06 22:08:43,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 762 transitions. [2023-11-06 22:08:43,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:43,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 762 transitions. [2023-11-06 22:08:43,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.85714285714286) internal successors, (762), 7 states have internal predecessors, (762), 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 22:08:43,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 211.0) internal successors, (1688), 8 states have internal predecessors, (1688), 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 22:08:43,091 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 211.0) internal successors, (1688), 8 states have internal predecessors, (1688), 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 22:08:43,091 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 182 flow. Second operand 7 states and 762 transitions. [2023-11-06 22:08:43,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 136 transitions, 922 flow [2023-11-06 22:08:43,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 136 transitions, 894 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-06 22:08:43,134 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 349 flow [2023-11-06 22:08:43,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=349, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2023-11-06 22:08:43,135 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 19 predicate places. [2023-11-06 22:08:43,135 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 349 flow [2023-11-06 22:08:43,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 99.125) internal successors, (793), 8 states have internal predecessors, (793), 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 22:08:43,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:43,136 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 22:08:43,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-06 22:08:43,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 22:08:43,342 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:08:43,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:43,343 INFO L85 PathProgramCache]: Analyzing trace with hash -785694139, now seen corresponding path program 2 times [2023-11-06 22:08:43,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:43,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974609041] [2023-11-06 22:08:43,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:43,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:43,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:43,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:43,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974609041] [2023-11-06 22:08:43,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974609041] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:08:43,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071106438] [2023-11-06 22:08:43,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:08:43,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:43,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:43,435 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:08:43,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:08:43,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:08:43,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:08:43,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:08:43,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:43,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:43,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:08:43,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:43,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071106438] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:08:43,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:08:43,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-06 22:08:43,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961655568] [2023-11-06 22:08:43,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:08:43,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:08:43,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:43,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:08:43,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:08:43,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 211 [2023-11-06 22:08:43,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 349 flow. Second operand has 10 states, 10 states have (on average 98.5) internal successors, (985), 10 states have internal predecessors, (985), 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 22:08:43,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:43,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 211 [2023-11-06 22:08:43,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:44,580 INFO L124 PetriNetUnfolderBase]: 3470/4664 cut-off events. [2023-11-06 22:08:44,580 INFO L125 PetriNetUnfolderBase]: For 17965/17971 co-relation queries the response was YES. [2023-11-06 22:08:44,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18528 conditions, 4664 events. 3470/4664 cut-off events. For 17965/17971 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 20494 event pairs, 756 based on Foata normal form. 80/4699 useless extension candidates. Maximal degree in co-relation 9996. Up to 2394 conditions per place. [2023-11-06 22:08:44,625 INFO L140 encePairwiseOnDemand]: 205/211 looper letters, 92 selfloop transitions, 31 changer transitions 0/125 dead transitions. [2023-11-06 22:08:44,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 125 transitions, 998 flow [2023-11-06 22:08:44,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:08:44,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:08:44,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 651 transitions. [2023-11-06 22:08:44,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.514218009478673 [2023-11-06 22:08:44,630 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 651 transitions. [2023-11-06 22:08:44,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 651 transitions. [2023-11-06 22:08:44,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:44,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 651 transitions. [2023-11-06 22:08:44,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 108.5) internal successors, (651), 6 states have internal predecessors, (651), 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 22:08:44,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 211.0) internal successors, (1477), 7 states have internal predecessors, (1477), 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 22:08:44,637 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 211.0) internal successors, (1477), 7 states have internal predecessors, (1477), 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 22:08:44,637 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 349 flow. Second operand 6 states and 651 transitions. [2023-11-06 22:08:44,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 125 transitions, 998 flow [2023-11-06 22:08:44,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 125 transitions, 958 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-11-06 22:08:44,665 INFO L231 Difference]: Finished difference. Result has 63 places, 67 transitions, 584 flow [2023-11-06 22:08:44,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=584, PETRI_PLACES=63, PETRI_TRANSITIONS=67} [2023-11-06 22:08:44,666 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 25 predicate places. [2023-11-06 22:08:44,667 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 67 transitions, 584 flow [2023-11-06 22:08:44,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 98.5) internal successors, (985), 10 states have internal predecessors, (985), 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 22:08:44,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:44,668 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 22:08:44,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:08:44,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:44,874 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:08:44,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:44,875 INFO L85 PathProgramCache]: Analyzing trace with hash -703607100, now seen corresponding path program 3 times [2023-11-06 22:08:44,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:44,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776788294] [2023-11-06 22:08:44,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:44,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:45,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:45,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:45,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776788294] [2023-11-06 22:08:45,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776788294] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:45,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:45,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:08:45,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191089786] [2023-11-06 22:08:45,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:45,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:08:45,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:45,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:08:45,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:08:45,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 211 [2023-11-06 22:08:45,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 67 transitions, 584 flow. Second operand has 5 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 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 22:08:45,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:45,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 211 [2023-11-06 22:08:45,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:45,852 INFO L124 PetriNetUnfolderBase]: 3784/5131 cut-off events. [2023-11-06 22:08:45,853 INFO L125 PetriNetUnfolderBase]: For 28455/28829 co-relation queries the response was YES. [2023-11-06 22:08:45,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22555 conditions, 5131 events. 3784/5131 cut-off events. For 28455/28829 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 23394 event pairs, 1275 based on Foata normal form. 406/5460 useless extension candidates. Maximal degree in co-relation 12739. Up to 4306 conditions per place. [2023-11-06 22:08:45,899 INFO L140 encePairwiseOnDemand]: 205/211 looper letters, 70 selfloop transitions, 13 changer transitions 12/105 dead transitions. [2023-11-06 22:08:45,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 105 transitions, 961 flow [2023-11-06 22:08:45,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:08:45,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:08:45,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 542 transitions. [2023-11-06 22:08:45,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5137440758293839 [2023-11-06 22:08:45,903 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 542 transitions. [2023-11-06 22:08:45,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 542 transitions. [2023-11-06 22:08:45,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:45,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 542 transitions. [2023-11-06 22:08:45,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.4) internal successors, (542), 5 states have internal predecessors, (542), 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 22:08:45,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:08:45,909 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:08:45,909 INFO L175 Difference]: Start difference. First operand has 63 places, 67 transitions, 584 flow. Second operand 5 states and 542 transitions. [2023-11-06 22:08:45,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 105 transitions, 961 flow [2023-11-06 22:08:45,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 105 transitions, 895 flow, removed 33 selfloop flow, removed 0 redundant places. [2023-11-06 22:08:45,965 INFO L231 Difference]: Finished difference. Result has 70 places, 72 transitions, 608 flow [2023-11-06 22:08:45,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=608, PETRI_PLACES=70, PETRI_TRANSITIONS=72} [2023-11-06 22:08:45,968 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 32 predicate places. [2023-11-06 22:08:45,968 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 72 transitions, 608 flow [2023-11-06 22:08:45,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 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 22:08:45,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:45,969 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 22:08:45,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:08:45,969 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:08:45,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:45,970 INFO L85 PathProgramCache]: Analyzing trace with hash -977315530, now seen corresponding path program 4 times [2023-11-06 22:08:45,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:45,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472262463] [2023-11-06 22:08:45,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:45,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:46,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:46,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:46,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472262463] [2023-11-06 22:08:46,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472262463] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:46,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:46,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:08:46,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505475680] [2023-11-06 22:08:46,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:46,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:08:46,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:46,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:08:46,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:08:46,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 211 [2023-11-06 22:08:46,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 608 flow. Second operand has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 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 22:08:46,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:46,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 211 [2023-11-06 22:08:46,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:47,067 INFO L124 PetriNetUnfolderBase]: 4286/5788 cut-off events. [2023-11-06 22:08:47,067 INFO L125 PetriNetUnfolderBase]: For 25124/25235 co-relation queries the response was YES. [2023-11-06 22:08:47,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25608 conditions, 5788 events. 4286/5788 cut-off events. For 25124/25235 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 26531 event pairs, 917 based on Foata normal form. 155/5897 useless extension candidates. Maximal degree in co-relation 16762. Up to 2434 conditions per place. [2023-11-06 22:08:47,119 INFO L140 encePairwiseOnDemand]: 205/211 looper letters, 107 selfloop transitions, 30 changer transitions 1/141 dead transitions. [2023-11-06 22:08:47,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 141 transitions, 1291 flow [2023-11-06 22:08:47,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:08:47,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:08:47,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 560 transitions. [2023-11-06 22:08:47,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5308056872037915 [2023-11-06 22:08:47,123 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 560 transitions. [2023-11-06 22:08:47,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 560 transitions. [2023-11-06 22:08:47,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:47,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 560 transitions. [2023-11-06 22:08:47,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 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 22:08:47,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:08:47,130 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:08:47,131 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 608 flow. Second operand 5 states and 560 transitions. [2023-11-06 22:08:47,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 141 transitions, 1291 flow [2023-11-06 22:08:47,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 141 transitions, 1229 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-11-06 22:08:47,182 INFO L231 Difference]: Finished difference. Result has 72 places, 76 transitions, 692 flow [2023-11-06 22:08:47,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=692, PETRI_PLACES=72, PETRI_TRANSITIONS=76} [2023-11-06 22:08:47,184 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 34 predicate places. [2023-11-06 22:08:47,184 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 76 transitions, 692 flow [2023-11-06 22:08:47,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 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 22:08:47,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:47,185 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 22:08:47,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:08:47,186 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:08:47,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:47,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1449961588, now seen corresponding path program 5 times [2023-11-06 22:08:47,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:47,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034131579] [2023-11-06 22:08:47,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:47,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:47,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:47,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:47,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034131579] [2023-11-06 22:08:47,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034131579] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:47,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:47,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:08:47,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069462684] [2023-11-06 22:08:47,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:47,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:08:47,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:47,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:08:47,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:08:47,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 211 [2023-11-06 22:08:47,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 76 transitions, 692 flow. Second operand has 5 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 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 22:08:47,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:47,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 211 [2023-11-06 22:08:47,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:48,307 INFO L124 PetriNetUnfolderBase]: 3954/5424 cut-off events. [2023-11-06 22:08:48,308 INFO L125 PetriNetUnfolderBase]: For 30667/31130 co-relation queries the response was YES. [2023-11-06 22:08:48,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24078 conditions, 5424 events. 3954/5424 cut-off events. For 30667/31130 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 25690 event pairs, 1612 based on Foata normal form. 490/5785 useless extension candidates. Maximal degree in co-relation 13659. Up to 4544 conditions per place. [2023-11-06 22:08:48,363 INFO L140 encePairwiseOnDemand]: 205/211 looper letters, 82 selfloop transitions, 18 changer transitions 13/123 dead transitions. [2023-11-06 22:08:48,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 123 transitions, 1246 flow [2023-11-06 22:08:48,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:08:48,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:08:48,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 542 transitions. [2023-11-06 22:08:48,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5137440758293839 [2023-11-06 22:08:48,368 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 542 transitions. [2023-11-06 22:08:48,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 542 transitions. [2023-11-06 22:08:48,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:48,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 542 transitions. [2023-11-06 22:08:48,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.4) internal successors, (542), 5 states have internal predecessors, (542), 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 22:08:48,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:08:48,375 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:08:48,375 INFO L175 Difference]: Start difference. First operand has 72 places, 76 transitions, 692 flow. Second operand 5 states and 542 transitions. [2023-11-06 22:08:48,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 123 transitions, 1246 flow [2023-11-06 22:08:48,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 123 transitions, 1181 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:08:48,423 INFO L231 Difference]: Finished difference. Result has 76 places, 83 transitions, 776 flow [2023-11-06 22:08:48,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=776, PETRI_PLACES=76, PETRI_TRANSITIONS=83} [2023-11-06 22:08:48,425 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 38 predicate places. [2023-11-06 22:08:48,425 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 83 transitions, 776 flow [2023-11-06 22:08:48,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 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 22:08:48,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:48,426 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 22:08:48,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:08:48,427 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:08:48,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:48,428 INFO L85 PathProgramCache]: Analyzing trace with hash -281972738, now seen corresponding path program 6 times [2023-11-06 22:08:48,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:48,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356664036] [2023-11-06 22:08:48,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:48,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:48,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:48,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:48,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356664036] [2023-11-06 22:08:48,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356664036] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:48,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:48,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:08:48,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945125143] [2023-11-06 22:08:48,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:48,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:08:48,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:48,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:08:48,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:08:48,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 211 [2023-11-06 22:08:48,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 83 transitions, 776 flow. Second operand has 5 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 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 22:08:48,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:48,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 211 [2023-11-06 22:08:48,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:49,566 INFO L124 PetriNetUnfolderBase]: 5026/6766 cut-off events. [2023-11-06 22:08:49,567 INFO L125 PetriNetUnfolderBase]: For 36561/36755 co-relation queries the response was YES. [2023-11-06 22:08:49,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31863 conditions, 6766 events. 5026/6766 cut-off events. For 36561/36755 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 31594 event pairs, 1788 based on Foata normal form. 278/6958 useless extension candidates. Maximal degree in co-relation 18350. Up to 4980 conditions per place. [2023-11-06 22:08:49,633 INFO L140 encePairwiseOnDemand]: 205/211 looper letters, 113 selfloop transitions, 36 changer transitions 2/156 dead transitions. [2023-11-06 22:08:49,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 156 transitions, 1677 flow [2023-11-06 22:08:49,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:08:49,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:08:49,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 547 transitions. [2023-11-06 22:08:49,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5184834123222749 [2023-11-06 22:08:49,637 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 547 transitions. [2023-11-06 22:08:49,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 547 transitions. [2023-11-06 22:08:49,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:49,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 547 transitions. [2023-11-06 22:08:49,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.4) internal successors, (547), 5 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) [2023-11-06 22:08:49,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:08:49,642 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:08:49,642 INFO L175 Difference]: Start difference. First operand has 76 places, 83 transitions, 776 flow. Second operand 5 states and 547 transitions. [2023-11-06 22:08:49,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 156 transitions, 1677 flow [2023-11-06 22:08:49,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 156 transitions, 1625 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-06 22:08:49,820 INFO L231 Difference]: Finished difference. Result has 80 places, 105 transitions, 1145 flow [2023-11-06 22:08:49,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1145, PETRI_PLACES=80, PETRI_TRANSITIONS=105} [2023-11-06 22:08:49,821 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 42 predicate places. [2023-11-06 22:08:49,821 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 105 transitions, 1145 flow [2023-11-06 22:08:49,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 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 22:08:49,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:49,822 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 22:08:49,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:08:49,823 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:08:49,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:49,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1655864492, now seen corresponding path program 7 times [2023-11-06 22:08:49,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:49,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584997841] [2023-11-06 22:08:49,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:49,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:50,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:50,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:50,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584997841] [2023-11-06 22:08:50,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584997841] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:50,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:50,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:08:50,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861729791] [2023-11-06 22:08:50,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:50,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:08:50,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:50,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:08:50,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:08:50,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 211 [2023-11-06 22:08:50,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 105 transitions, 1145 flow. Second operand has 5 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 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 22:08:50,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:50,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 211 [2023-11-06 22:08:50,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:51,133 INFO L124 PetriNetUnfolderBase]: 4898/6609 cut-off events. [2023-11-06 22:08:51,133 INFO L125 PetriNetUnfolderBase]: For 41092/41237 co-relation queries the response was YES. [2023-11-06 22:08:51,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32399 conditions, 6609 events. 4898/6609 cut-off events. For 41092/41237 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 31045 event pairs, 1163 based on Foata normal form. 236/6815 useless extension candidates. Maximal degree in co-relation 21394. Up to 3279 conditions per place. [2023-11-06 22:08:51,195 INFO L140 encePairwiseOnDemand]: 205/211 looper letters, 102 selfloop transitions, 62 changer transitions 4/173 dead transitions. [2023-11-06 22:08:51,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 173 transitions, 2068 flow [2023-11-06 22:08:51,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:08:51,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:08:51,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2023-11-06 22:08:51,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5194312796208531 [2023-11-06 22:08:51,199 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2023-11-06 22:08:51,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2023-11-06 22:08:51,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:51,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2023-11-06 22:08:51,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 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 22:08:51,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:08:51,205 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:08:51,205 INFO L175 Difference]: Start difference. First operand has 80 places, 105 transitions, 1145 flow. Second operand 5 states and 548 transitions. [2023-11-06 22:08:51,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 173 transitions, 2068 flow [2023-11-06 22:08:51,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 173 transitions, 1963 flow, removed 37 selfloop flow, removed 1 redundant places. [2023-11-06 22:08:51,341 INFO L231 Difference]: Finished difference. Result has 85 places, 125 transitions, 1534 flow [2023-11-06 22:08:51,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1534, PETRI_PLACES=85, PETRI_TRANSITIONS=125} [2023-11-06 22:08:51,342 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 47 predicate places. [2023-11-06 22:08:51,343 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 125 transitions, 1534 flow [2023-11-06 22:08:51,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 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 22:08:51,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:51,343 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 22:08:51,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:08:51,344 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:08:51,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:51,344 INFO L85 PathProgramCache]: Analyzing trace with hash 914805686, now seen corresponding path program 8 times [2023-11-06 22:08:51,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:51,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034148288] [2023-11-06 22:08:51,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:51,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:51,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:51,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:51,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:51,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034148288] [2023-11-06 22:08:51,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034148288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:51,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:51,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:08:51,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072519417] [2023-11-06 22:08:51,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:51,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:08:51,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:51,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:08:51,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:08:51,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 211 [2023-11-06 22:08:51,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 125 transitions, 1534 flow. Second operand has 5 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 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 22:08:51,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:51,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 211 [2023-11-06 22:08:51,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:52,527 INFO L124 PetriNetUnfolderBase]: 4927/6684 cut-off events. [2023-11-06 22:08:52,527 INFO L125 PetriNetUnfolderBase]: For 43323/43486 co-relation queries the response was YES. [2023-11-06 22:08:52,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33794 conditions, 6684 events. 4927/6684 cut-off events. For 43323/43486 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 31880 event pairs, 1269 based on Foata normal form. 172/6798 useless extension candidates. Maximal degree in co-relation 21558. Up to 3292 conditions per place. [2023-11-06 22:08:52,589 INFO L140 encePairwiseOnDemand]: 205/211 looper letters, 99 selfloop transitions, 65 changer transitions 1/170 dead transitions. [2023-11-06 22:08:52,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 170 transitions, 2134 flow [2023-11-06 22:08:52,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:08:52,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:08:52,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 547 transitions. [2023-11-06 22:08:52,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5184834123222749 [2023-11-06 22:08:52,592 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 547 transitions. [2023-11-06 22:08:52,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 547 transitions. [2023-11-06 22:08:52,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:52,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 547 transitions. [2023-11-06 22:08:52,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.4) internal successors, (547), 5 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) [2023-11-06 22:08:52,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:08:52,598 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:08:52,598 INFO L175 Difference]: Start difference. First operand has 85 places, 125 transitions, 1534 flow. Second operand 5 states and 547 transitions. [2023-11-06 22:08:52,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 170 transitions, 2134 flow [2023-11-06 22:08:52,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 170 transitions, 1967 flow, removed 57 selfloop flow, removed 1 redundant places. [2023-11-06 22:08:52,763 INFO L231 Difference]: Finished difference. Result has 89 places, 128 transitions, 1552 flow [2023-11-06 22:08:52,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1552, PETRI_PLACES=89, PETRI_TRANSITIONS=128} [2023-11-06 22:08:52,765 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 51 predicate places. [2023-11-06 22:08:52,765 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 128 transitions, 1552 flow [2023-11-06 22:08:52,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 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 22:08:52,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:52,766 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 22:08:52,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:08:52,766 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:08:52,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:52,766 INFO L85 PathProgramCache]: Analyzing trace with hash 358654450, now seen corresponding path program 9 times [2023-11-06 22:08:52,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:52,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766434921] [2023-11-06 22:08:52,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:52,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:52,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:52,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:52,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766434921] [2023-11-06 22:08:52,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766434921] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:52,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:52,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:08:52,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50507836] [2023-11-06 22:08:52,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:52,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:08:52,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:52,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:08:52,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:08:52,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 211 [2023-11-06 22:08:52,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 128 transitions, 1552 flow. Second operand has 5 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 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 22:08:52,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:52,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 211 [2023-11-06 22:08:52,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:54,023 INFO L124 PetriNetUnfolderBase]: 4516/6158 cut-off events. [2023-11-06 22:08:54,023 INFO L125 PetriNetUnfolderBase]: For 44149/44338 co-relation queries the response was YES. [2023-11-06 22:08:54,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31285 conditions, 6158 events. 4516/6158 cut-off events. For 44149/44338 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 29250 event pairs, 1661 based on Foata normal form. 191/6260 useless extension candidates. Maximal degree in co-relation 21248. Up to 5073 conditions per place. [2023-11-06 22:08:54,070 INFO L140 encePairwiseOnDemand]: 205/211 looper letters, 118 selfloop transitions, 46 changer transitions 1/170 dead transitions. [2023-11-06 22:08:54,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 170 transitions, 2124 flow [2023-11-06 22:08:54,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:08:54,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:08:54,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 546 transitions. [2023-11-06 22:08:54,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175355450236967 [2023-11-06 22:08:54,073 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 546 transitions. [2023-11-06 22:08:54,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 546 transitions. [2023-11-06 22:08:54,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:54,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 546 transitions. [2023-11-06 22:08:54,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 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 22:08:54,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:08:54,078 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:08:54,078 INFO L175 Difference]: Start difference. First operand has 89 places, 128 transitions, 1552 flow. Second operand 5 states and 546 transitions. [2023-11-06 22:08:54,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 170 transitions, 2124 flow [2023-11-06 22:08:54,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 170 transitions, 1987 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-06 22:08:54,195 INFO L231 Difference]: Finished difference. Result has 90 places, 130 transitions, 1538 flow [2023-11-06 22:08:54,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=1415, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1538, PETRI_PLACES=90, PETRI_TRANSITIONS=130} [2023-11-06 22:08:54,196 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 52 predicate places. [2023-11-06 22:08:54,196 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 130 transitions, 1538 flow [2023-11-06 22:08:54,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 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 22:08:54,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:54,200 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 22:08:54,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:08:54,200 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:08:54,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:54,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1130051093, now seen corresponding path program 3 times [2023-11-06 22:08:54,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:54,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690452834] [2023-11-06 22:08:54,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:54,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:54,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:54,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:54,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690452834] [2023-11-06 22:08:54,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690452834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:54,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:54,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:08:54,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226179075] [2023-11-06 22:08:54,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:54,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:08:54,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:54,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:08:54,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:08:54,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 211 [2023-11-06 22:08:54,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 130 transitions, 1538 flow. Second operand has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 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 22:08:54,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:54,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 211 [2023-11-06 22:08:54,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:55,110 INFO L124 PetriNetUnfolderBase]: 3988/5425 cut-off events. [2023-11-06 22:08:55,110 INFO L125 PetriNetUnfolderBase]: For 36742/37032 co-relation queries the response was YES. [2023-11-06 22:08:55,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27474 conditions, 5425 events. 3988/5425 cut-off events. For 36742/37032 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 25185 event pairs, 1052 based on Foata normal form. 258/5650 useless extension candidates. Maximal degree in co-relation 21161. Up to 3531 conditions per place. [2023-11-06 22:08:55,154 INFO L140 encePairwiseOnDemand]: 206/211 looper letters, 122 selfloop transitions, 36 changer transitions 8/179 dead transitions. [2023-11-06 22:08:55,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 179 transitions, 2221 flow [2023-11-06 22:08:55,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:08:55,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:08:55,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 550 transitions. [2023-11-06 22:08:55,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5213270142180095 [2023-11-06 22:08:55,157 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 550 transitions. [2023-11-06 22:08:55,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 550 transitions. [2023-11-06 22:08:55,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:55,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 550 transitions. [2023-11-06 22:08:55,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 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 22:08:55,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:08:55,163 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:08:55,163 INFO L175 Difference]: Start difference. First operand has 90 places, 130 transitions, 1538 flow. Second operand 5 states and 550 transitions. [2023-11-06 22:08:55,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 179 transitions, 2221 flow [2023-11-06 22:08:55,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 179 transitions, 2101 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-11-06 22:08:55,284 INFO L231 Difference]: Finished difference. Result has 91 places, 130 transitions, 1518 flow [2023-11-06 22:08:55,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1518, PETRI_PLACES=91, PETRI_TRANSITIONS=130} [2023-11-06 22:08:55,285 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 53 predicate places. [2023-11-06 22:08:55,285 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 130 transitions, 1518 flow [2023-11-06 22:08:55,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 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 22:08:55,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:55,286 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 22:08:55,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:08:55,286 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:08:55,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:55,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1395323913, now seen corresponding path program 4 times [2023-11-06 22:08:55,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:55,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921640751] [2023-11-06 22:08:55,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:55,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:55,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:55,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:55,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921640751] [2023-11-06 22:08:55,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921640751] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:08:55,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390324624] [2023-11-06 22:08:55,384 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:08:55,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:55,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:55,388 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:08:55,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:08:55,487 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:08:55,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:08:55,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:08:55,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:55,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:55,546 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:08:55,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:55,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390324624] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:08:55,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:08:55,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-06 22:08:55,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328248564] [2023-11-06 22:08:55,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:08:55,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:08:55,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:55,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:08:55,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:08:55,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 211 [2023-11-06 22:08:55,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 130 transitions, 1518 flow. Second operand has 10 states, 10 states have (on average 98.7) internal successors, (987), 10 states have internal predecessors, (987), 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 22:08:55,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:55,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 211 [2023-11-06 22:08:55,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:56,827 INFO L124 PetriNetUnfolderBase]: 4605/6181 cut-off events. [2023-11-06 22:08:56,827 INFO L125 PetriNetUnfolderBase]: For 41476/41657 co-relation queries the response was YES. [2023-11-06 22:08:56,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30421 conditions, 6181 events. 4605/6181 cut-off events. For 41476/41657 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 28824 event pairs, 699 based on Foata normal form. 169/6322 useless extension candidates. Maximal degree in co-relation 21814. Up to 2669 conditions per place. [2023-11-06 22:08:56,893 INFO L140 encePairwiseOnDemand]: 205/211 looper letters, 215 selfloop transitions, 68 changer transitions 0/290 dead transitions. [2023-11-06 22:08:56,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 290 transitions, 3371 flow [2023-11-06 22:08:56,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:08:56,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:08:56,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1078 transitions. [2023-11-06 22:08:56,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5109004739336492 [2023-11-06 22:08:56,899 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1078 transitions. [2023-11-06 22:08:56,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1078 transitions. [2023-11-06 22:08:56,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:56,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1078 transitions. [2023-11-06 22:08:56,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 107.8) internal successors, (1078), 10 states have internal predecessors, (1078), 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 22:08:56,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 211.0) internal successors, (2321), 11 states have internal predecessors, (2321), 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 22:08:56,911 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 211.0) internal successors, (2321), 11 states have internal predecessors, (2321), 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 22:08:56,911 INFO L175 Difference]: Start difference. First operand has 91 places, 130 transitions, 1518 flow. Second operand 10 states and 1078 transitions. [2023-11-06 22:08:56,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 290 transitions, 3371 flow [2023-11-06 22:08:57,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 290 transitions, 3263 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-06 22:08:57,029 INFO L231 Difference]: Finished difference. Result has 102 places, 165 transitions, 2198 flow [2023-11-06 22:08:57,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=1460, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2198, PETRI_PLACES=102, PETRI_TRANSITIONS=165} [2023-11-06 22:08:57,030 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 64 predicate places. [2023-11-06 22:08:57,030 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 165 transitions, 2198 flow [2023-11-06 22:08:57,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 98.7) internal successors, (987), 10 states have internal predecessors, (987), 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 22:08:57,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:57,031 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 22:08:57,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:08:57,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:57,233 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:08:57,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:57,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1218815091, now seen corresponding path program 5 times [2023-11-06 22:08:57,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:57,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271426525] [2023-11-06 22:08:57,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:57,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:57,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:57,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:57,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271426525] [2023-11-06 22:08:57,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271426525] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:57,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:57,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:08:57,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627577582] [2023-11-06 22:08:57,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:57,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:08:57,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:57,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:08:57,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:08:57,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 211 [2023-11-06 22:08:57,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 165 transitions, 2198 flow. Second operand has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 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 22:08:57,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:57,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 211 [2023-11-06 22:08:57,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:58,505 INFO L124 PetriNetUnfolderBase]: 4759/6380 cut-off events. [2023-11-06 22:08:58,506 INFO L125 PetriNetUnfolderBase]: For 50140/50372 co-relation queries the response was YES. [2023-11-06 22:08:58,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34118 conditions, 6380 events. 4759/6380 cut-off events. For 50140/50372 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 29071 event pairs, 1052 based on Foata normal form. 170/6498 useless extension candidates. Maximal degree in co-relation 30090. Up to 3518 conditions per place. [2023-11-06 22:08:58,555 INFO L140 encePairwiseOnDemand]: 206/211 looper letters, 107 selfloop transitions, 78 changer transitions 15/207 dead transitions. [2023-11-06 22:08:58,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 207 transitions, 2816 flow [2023-11-06 22:08:58,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:08:58,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:08:58,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 554 transitions. [2023-11-06 22:08:58,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5251184834123223 [2023-11-06 22:08:58,559 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 554 transitions. [2023-11-06 22:08:58,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 554 transitions. [2023-11-06 22:08:58,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:58,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 554 transitions. [2023-11-06 22:08:58,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 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 22:08:58,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:08:58,565 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:08:58,565 INFO L175 Difference]: Start difference. First operand has 102 places, 165 transitions, 2198 flow. Second operand 5 states and 554 transitions. [2023-11-06 22:08:58,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 207 transitions, 2816 flow [2023-11-06 22:08:58,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 207 transitions, 2609 flow, removed 63 selfloop flow, removed 3 redundant places. [2023-11-06 22:08:58,705 INFO L231 Difference]: Finished difference. Result has 105 places, 161 transitions, 2087 flow [2023-11-06 22:08:58,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=1998, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2087, PETRI_PLACES=105, PETRI_TRANSITIONS=161} [2023-11-06 22:08:58,706 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 67 predicate places. [2023-11-06 22:08:58,706 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 161 transitions, 2087 flow [2023-11-06 22:08:58,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 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 22:08:58,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:58,707 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 22:08:58,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:08:58,707 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:08:58,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:58,707 INFO L85 PathProgramCache]: Analyzing trace with hash -143051739, now seen corresponding path program 6 times [2023-11-06 22:08:58,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:58,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485561811] [2023-11-06 22:08:58,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:58,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:58,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:58,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:58,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485561811] [2023-11-06 22:08:58,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485561811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:58,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:58,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:08:58,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14488188] [2023-11-06 22:08:58,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:58,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:08:58,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:58,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:08:58,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:08:58,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 211 [2023-11-06 22:08:58,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 161 transitions, 2087 flow. Second operand has 5 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 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 22:08:58,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:58,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 211 [2023-11-06 22:08:58,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:59,691 INFO L124 PetriNetUnfolderBase]: 4619/6251 cut-off events. [2023-11-06 22:08:59,691 INFO L125 PetriNetUnfolderBase]: For 44558/44808 co-relation queries the response was YES. [2023-11-06 22:08:59,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32036 conditions, 6251 events. 4619/6251 cut-off events. For 44558/44808 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 29219 event pairs, 1680 based on Foata normal form. 198/6403 useless extension candidates. Maximal degree in co-relation 29306. Up to 5400 conditions per place. [2023-11-06 22:08:59,742 INFO L140 encePairwiseOnDemand]: 206/211 looper letters, 134 selfloop transitions, 22 changer transitions 12/185 dead transitions. [2023-11-06 22:08:59,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 185 transitions, 2562 flow [2023-11-06 22:08:59,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:08:59,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:08:59,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 535 transitions. [2023-11-06 22:08:59,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5071090047393365 [2023-11-06 22:08:59,745 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 535 transitions. [2023-11-06 22:08:59,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 535 transitions. [2023-11-06 22:08:59,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:59,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 535 transitions. [2023-11-06 22:08:59,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 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 22:08:59,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:08:59,750 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:08:59,751 INFO L175 Difference]: Start difference. First operand has 105 places, 161 transitions, 2087 flow. Second operand 5 states and 535 transitions. [2023-11-06 22:08:59,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 185 transitions, 2562 flow [2023-11-06 22:08:59,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 185 transitions, 2311 flow, removed 7 selfloop flow, removed 9 redundant places. [2023-11-06 22:08:59,860 INFO L231 Difference]: Finished difference. Result has 99 places, 155 transitions, 1802 flow [2023-11-06 22:08:59,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=1846, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1802, PETRI_PLACES=99, PETRI_TRANSITIONS=155} [2023-11-06 22:08:59,861 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 61 predicate places. [2023-11-06 22:08:59,861 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 155 transitions, 1802 flow [2023-11-06 22:08:59,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 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 22:08:59,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:59,862 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 22:08:59,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 22:08:59,862 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:08:59,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:59,862 INFO L85 PathProgramCache]: Analyzing trace with hash -771390501, now seen corresponding path program 7 times [2023-11-06 22:08:59,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:59,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451057704] [2023-11-06 22:08:59,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:59,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:59,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:59,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:59,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451057704] [2023-11-06 22:08:59,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451057704] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:59,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:59,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:08:59,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627177977] [2023-11-06 22:08:59,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:59,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:08:59,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:59,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:08:59,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:08:59,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 211 [2023-11-06 22:08:59,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 155 transitions, 1802 flow. Second operand has 5 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 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 22:08:59,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:59,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 211 [2023-11-06 22:08:59,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:01,001 INFO L124 PetriNetUnfolderBase]: 4665/6301 cut-off events. [2023-11-06 22:09:01,001 INFO L125 PetriNetUnfolderBase]: For 41044/41263 co-relation queries the response was YES. [2023-11-06 22:09:01,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30726 conditions, 6301 events. 4665/6301 cut-off events. For 41044/41263 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 29797 event pairs, 1615 based on Foata normal form. 187/6424 useless extension candidates. Maximal degree in co-relation 27109. Up to 5472 conditions per place. [2023-11-06 22:09:01,064 INFO L140 encePairwiseOnDemand]: 207/211 looper letters, 150 selfloop transitions, 20 changer transitions 10/187 dead transitions. [2023-11-06 22:09:01,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 187 transitions, 2302 flow [2023-11-06 22:09:01,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:09:01,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:09:01,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 540 transitions. [2023-11-06 22:09:01,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5118483412322274 [2023-11-06 22:09:01,067 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 540 transitions. [2023-11-06 22:09:01,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 540 transitions. [2023-11-06 22:09:01,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:01,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 540 transitions. [2023-11-06 22:09:01,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 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 22:09:01,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:09:01,073 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:09:01,073 INFO L175 Difference]: Start difference. First operand has 99 places, 155 transitions, 1802 flow. Second operand 5 states and 540 transitions. [2023-11-06 22:09:01,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 187 transitions, 2302 flow [2023-11-06 22:09:01,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 187 transitions, 2256 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:09:01,159 INFO L231 Difference]: Finished difference. Result has 99 places, 152 transitions, 1745 flow [2023-11-06 22:09:01,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=1758, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1745, PETRI_PLACES=99, PETRI_TRANSITIONS=152} [2023-11-06 22:09:01,159 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 61 predicate places. [2023-11-06 22:09:01,160 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 152 transitions, 1745 flow [2023-11-06 22:09:01,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 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 22:09:01,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:01,161 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 22:09:01,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 22:09:01,161 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:09:01,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:01,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1902394591, now seen corresponding path program 8 times [2023-11-06 22:09:01,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:01,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209623034] [2023-11-06 22:09:01,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:01,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:01,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:01,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:01,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209623034] [2023-11-06 22:09:01,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209623034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:01,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:01,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:09:01,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989731020] [2023-11-06 22:09:01,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:01,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:09:01,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:01,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:09:01,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:09:01,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 211 [2023-11-06 22:09:01,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 152 transitions, 1745 flow. Second operand has 5 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 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 22:09:01,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:01,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 211 [2023-11-06 22:09:01,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:02,057 INFO L124 PetriNetUnfolderBase]: 4383/5835 cut-off events. [2023-11-06 22:09:02,057 INFO L125 PetriNetUnfolderBase]: For 34100/34266 co-relation queries the response was YES. [2023-11-06 22:09:02,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28322 conditions, 5835 events. 4383/5835 cut-off events. For 34100/34266 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 26295 event pairs, 876 based on Foata normal form. 94/5877 useless extension candidates. Maximal degree in co-relation 24745. Up to 3210 conditions per place. [2023-11-06 22:09:02,092 INFO L140 encePairwiseOnDemand]: 206/211 looper letters, 84 selfloop transitions, 78 changer transitions 12/179 dead transitions. [2023-11-06 22:09:02,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 179 transitions, 2175 flow [2023-11-06 22:09:02,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:09:02,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:09:02,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 541 transitions. [2023-11-06 22:09:02,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127962085308057 [2023-11-06 22:09:02,098 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 541 transitions. [2023-11-06 22:09:02,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 541 transitions. [2023-11-06 22:09:02,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:02,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 541 transitions. [2023-11-06 22:09:02,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 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 22:09:02,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:09:02,104 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:09:02,104 INFO L175 Difference]: Start difference. First operand has 99 places, 152 transitions, 1745 flow. Second operand 5 states and 541 transitions. [2023-11-06 22:09:02,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 179 transitions, 2175 flow [2023-11-06 22:09:02,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 179 transitions, 2135 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:09:02,183 INFO L231 Difference]: Finished difference. Result has 100 places, 142 transitions, 1743 flow [2023-11-06 22:09:02,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=1657, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1743, PETRI_PLACES=100, PETRI_TRANSITIONS=142} [2023-11-06 22:09:02,184 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 62 predicate places. [2023-11-06 22:09:02,184 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 142 transitions, 1743 flow [2023-11-06 22:09:02,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 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 22:09:02,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:02,185 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] [2023-11-06 22:09:02,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-06 22:09:02,186 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:09:02,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:02,186 INFO L85 PathProgramCache]: Analyzing trace with hash -2036413206, now seen corresponding path program 1 times [2023-11-06 22:09:02,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:02,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010269319] [2023-11-06 22:09:02,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:02,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:02,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:02,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:02,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010269319] [2023-11-06 22:09:02,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010269319] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:02,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:02,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:09:02,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492301457] [2023-11-06 22:09:02,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:02,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:09:02,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:02,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:09:02,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:09:02,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 211 [2023-11-06 22:09:02,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 142 transitions, 1743 flow. Second operand has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 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 22:09:02,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:02,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 211 [2023-11-06 22:09:02,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:03,210 INFO L124 PetriNetUnfolderBase]: 4529/6064 cut-off events. [2023-11-06 22:09:03,210 INFO L125 PetriNetUnfolderBase]: For 36288/36443 co-relation queries the response was YES. [2023-11-06 22:09:03,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30071 conditions, 6064 events. 4529/6064 cut-off events. For 36288/36443 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 27483 event pairs, 564 based on Foata normal form. 247/6296 useless extension candidates. Maximal degree in co-relation 25743. Up to 4700 conditions per place. [2023-11-06 22:09:03,261 INFO L140 encePairwiseOnDemand]: 206/211 looper letters, 158 selfloop transitions, 21 changer transitions 3/199 dead transitions. [2023-11-06 22:09:03,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 199 transitions, 2481 flow [2023-11-06 22:09:03,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:09:03,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:09:03,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 551 transitions. [2023-11-06 22:09:03,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222748815165876 [2023-11-06 22:09:03,263 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 551 transitions. [2023-11-06 22:09:03,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 551 transitions. [2023-11-06 22:09:03,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:03,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 551 transitions. [2023-11-06 22:09:03,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.2) internal successors, (551), 5 states have internal predecessors, (551), 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 22:09:03,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:09:03,268 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:09:03,268 INFO L175 Difference]: Start difference. First operand has 100 places, 142 transitions, 1743 flow. Second operand 5 states and 551 transitions. [2023-11-06 22:09:03,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 199 transitions, 2481 flow [2023-11-06 22:09:03,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 199 transitions, 2269 flow, removed 20 selfloop flow, removed 7 redundant places. [2023-11-06 22:09:03,359 INFO L231 Difference]: Finished difference. Result has 93 places, 147 transitions, 1693 flow [2023-11-06 22:09:03,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1693, PETRI_PLACES=93, PETRI_TRANSITIONS=147} [2023-11-06 22:09:03,359 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 55 predicate places. [2023-11-06 22:09:03,359 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 147 transitions, 1693 flow [2023-11-06 22:09:03,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 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 22:09:03,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:03,360 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] [2023-11-06 22:09:03,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-06 22:09:03,360 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:09:03,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:03,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1873178868, now seen corresponding path program 2 times [2023-11-06 22:09:03,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:03,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041617519] [2023-11-06 22:09:03,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:03,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:03,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:09:03,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:03,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041617519] [2023-11-06 22:09:03,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041617519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:03,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:03,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:09:03,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339214559] [2023-11-06 22:09:03,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:03,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:09:03,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:03,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:09:03,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:09:03,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 211 [2023-11-06 22:09:03,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 147 transitions, 1693 flow. Second operand has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 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 22:09:03,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:03,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 211 [2023-11-06 22:09:03,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:04,506 INFO L124 PetriNetUnfolderBase]: 6453/8543 cut-off events. [2023-11-06 22:09:04,507 INFO L125 PetriNetUnfolderBase]: For 65966/68243 co-relation queries the response was YES. [2023-11-06 22:09:04,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41165 conditions, 8543 events. 6453/8543 cut-off events. For 65966/68243 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 39329 event pairs, 1353 based on Foata normal form. 1028/9472 useless extension candidates. Maximal degree in co-relation 34625. Up to 4742 conditions per place. [2023-11-06 22:09:04,565 INFO L140 encePairwiseOnDemand]: 206/211 looper letters, 344 selfloop transitions, 3 changer transitions 19/388 dead transitions. [2023-11-06 22:09:04,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 388 transitions, 5216 flow [2023-11-06 22:09:04,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:09:04,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:09:04,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2023-11-06 22:09:04,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5194312796208531 [2023-11-06 22:09:04,567 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2023-11-06 22:09:04,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2023-11-06 22:09:04,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:04,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2023-11-06 22:09:04,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 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 22:09:04,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:09:04,569 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:09:04,569 INFO L175 Difference]: Start difference. First operand has 93 places, 147 transitions, 1693 flow. Second operand 5 states and 548 transitions. [2023-11-06 22:09:04,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 388 transitions, 5216 flow [2023-11-06 22:09:04,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 388 transitions, 5152 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-06 22:09:04,654 INFO L231 Difference]: Finished difference. Result has 98 places, 149 transitions, 1723 flow [2023-11-06 22:09:04,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=1669, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1723, PETRI_PLACES=98, PETRI_TRANSITIONS=149} [2023-11-06 22:09:04,655 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 60 predicate places. [2023-11-06 22:09:04,655 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 149 transitions, 1723 flow [2023-11-06 22:09:04,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 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 22:09:04,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:04,655 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] [2023-11-06 22:09:04,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-06 22:09:04,656 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:09:04,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:04,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1964844324, now seen corresponding path program 3 times [2023-11-06 22:09:04,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:04,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001202708] [2023-11-06 22:09:04,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:04,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:04,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:09:04,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:04,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001202708] [2023-11-06 22:09:04,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001202708] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:04,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:04,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:09:04,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624172273] [2023-11-06 22:09:04,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:04,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:09:04,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:04,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:09:04,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:09:04,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 211 [2023-11-06 22:09:04,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 149 transitions, 1723 flow. Second operand has 5 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 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 22:09:04,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:04,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 211 [2023-11-06 22:09:04,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:05,781 INFO L124 PetriNetUnfolderBase]: 5383/7288 cut-off events. [2023-11-06 22:09:05,782 INFO L125 PetriNetUnfolderBase]: For 50580/51429 co-relation queries the response was YES. [2023-11-06 22:09:05,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37279 conditions, 7288 events. 5383/7288 cut-off events. For 50580/51429 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 34768 event pairs, 1560 based on Foata normal form. 888/8057 useless extension candidates. Maximal degree in co-relation 31807. Up to 6221 conditions per place. [2023-11-06 22:09:05,847 INFO L140 encePairwiseOnDemand]: 206/211 looper letters, 156 selfloop transitions, 24 changer transitions 0/197 dead transitions. [2023-11-06 22:09:05,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 197 transitions, 2397 flow [2023-11-06 22:09:05,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:09:05,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:09:05,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 540 transitions. [2023-11-06 22:09:05,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5118483412322274 [2023-11-06 22:09:05,850 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 540 transitions. [2023-11-06 22:09:05,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 540 transitions. [2023-11-06 22:09:05,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:05,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 540 transitions. [2023-11-06 22:09:05,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 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 22:09:05,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:09:05,853 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:09:05,854 INFO L175 Difference]: Start difference. First operand has 98 places, 149 transitions, 1723 flow. Second operand 5 states and 540 transitions. [2023-11-06 22:09:05,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 197 transitions, 2397 flow [2023-11-06 22:09:05,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 197 transitions, 2366 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-11-06 22:09:05,984 INFO L231 Difference]: Finished difference. Result has 100 places, 152 transitions, 1801 flow [2023-11-06 22:09:05,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=1695, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1801, PETRI_PLACES=100, PETRI_TRANSITIONS=152} [2023-11-06 22:09:05,985 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 62 predicate places. [2023-11-06 22:09:05,985 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 152 transitions, 1801 flow [2023-11-06 22:09:05,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 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 22:09:05,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:05,986 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] [2023-11-06 22:09:05,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-06 22:09:05,986 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:09:05,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:05,987 INFO L85 PathProgramCache]: Analyzing trace with hash -463855464, now seen corresponding path program 4 times [2023-11-06 22:09:05,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:05,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305358960] [2023-11-06 22:09:05,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:05,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:06,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:09:06,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:06,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305358960] [2023-11-06 22:09:06,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305358960] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:06,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:06,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:09:06,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088590004] [2023-11-06 22:09:06,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:06,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:09:06,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:06,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:09:06,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:09:06,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 211 [2023-11-06 22:09:06,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 152 transitions, 1801 flow. Second operand has 5 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 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 22:09:06,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:06,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 211 [2023-11-06 22:09:06,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:07,209 INFO L124 PetriNetUnfolderBase]: 5377/7273 cut-off events. [2023-11-06 22:09:07,210 INFO L125 PetriNetUnfolderBase]: For 50777/51687 co-relation queries the response was YES. [2023-11-06 22:09:07,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37309 conditions, 7273 events. 5377/7273 cut-off events. For 50777/51687 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 34628 event pairs, 1789 based on Foata normal form. 850/8064 useless extension candidates. Maximal degree in co-relation 31821. Up to 5768 conditions per place. [2023-11-06 22:09:07,279 INFO L140 encePairwiseOnDemand]: 206/211 looper letters, 121 selfloop transitions, 32 changer transitions 7/177 dead transitions. [2023-11-06 22:09:07,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 177 transitions, 2230 flow [2023-11-06 22:09:07,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:09:07,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:09:07,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 534 transitions. [2023-11-06 22:09:07,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5061611374407583 [2023-11-06 22:09:07,282 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 534 transitions. [2023-11-06 22:09:07,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 534 transitions. [2023-11-06 22:09:07,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:07,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 534 transitions. [2023-11-06 22:09:07,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 106.8) internal successors, (534), 5 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:07,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:09:07,287 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:09:07,287 INFO L175 Difference]: Start difference. First operand has 100 places, 152 transitions, 1801 flow. Second operand 5 states and 534 transitions. [2023-11-06 22:09:07,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 177 transitions, 2230 flow [2023-11-06 22:09:07,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 177 transitions, 2182 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-06 22:09:07,448 INFO L231 Difference]: Finished difference. Result has 102 places, 149 transitions, 1793 flow [2023-11-06 22:09:07,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=1753, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1793, PETRI_PLACES=102, PETRI_TRANSITIONS=149} [2023-11-06 22:09:07,449 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 64 predicate places. [2023-11-06 22:09:07,449 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 149 transitions, 1793 flow [2023-11-06 22:09:07,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 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 22:09:07,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:07,449 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] [2023-11-06 22:09:07,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-06 22:09:07,450 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:09:07,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:07,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1298674558, now seen corresponding path program 5 times [2023-11-06 22:09:07,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:07,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399258935] [2023-11-06 22:09:07,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:07,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:07,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:09:07,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:07,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399258935] [2023-11-06 22:09:07,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399258935] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:07,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:07,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:09:07,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357779506] [2023-11-06 22:09:07,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:07,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:09:07,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:07,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:09:07,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:09:07,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 211 [2023-11-06 22:09:07,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 149 transitions, 1793 flow. Second operand has 5 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 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 22:09:07,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:07,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 211 [2023-11-06 22:09:07,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:08,636 INFO L124 PetriNetUnfolderBase]: 5012/6756 cut-off events. [2023-11-06 22:09:08,636 INFO L125 PetriNetUnfolderBase]: For 49979/50835 co-relation queries the response was YES. [2023-11-06 22:09:08,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34323 conditions, 6756 events. 5012/6756 cut-off events. For 49979/50835 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 31336 event pairs, 1531 based on Foata normal form. 910/7611 useless extension candidates. Maximal degree in co-relation 29224. Up to 5295 conditions per place. [2023-11-06 22:09:08,702 INFO L140 encePairwiseOnDemand]: 206/211 looper letters, 146 selfloop transitions, 29 changer transitions 3/195 dead transitions. [2023-11-06 22:09:08,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 195 transitions, 2427 flow [2023-11-06 22:09:08,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:09:08,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:09:08,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 542 transitions. [2023-11-06 22:09:08,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5137440758293839 [2023-11-06 22:09:08,705 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 542 transitions. [2023-11-06 22:09:08,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 542 transitions. [2023-11-06 22:09:08,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:08,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 542 transitions. [2023-11-06 22:09:08,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.4) internal successors, (542), 5 states have internal predecessors, (542), 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 22:09:08,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:09:08,711 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:09:08,711 INFO L175 Difference]: Start difference. First operand has 102 places, 149 transitions, 1793 flow. Second operand 5 states and 542 transitions. [2023-11-06 22:09:08,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 195 transitions, 2427 flow [2023-11-06 22:09:08,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 195 transitions, 2357 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-06 22:09:08,814 INFO L231 Difference]: Finished difference. Result has 101 places, 146 transitions, 1733 flow [2023-11-06 22:09:08,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=1723, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1733, PETRI_PLACES=101, PETRI_TRANSITIONS=146} [2023-11-06 22:09:08,815 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 63 predicate places. [2023-11-06 22:09:08,815 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 146 transitions, 1733 flow [2023-11-06 22:09:08,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 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 22:09:08,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:08,816 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] [2023-11-06 22:09:08,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-06 22:09:08,816 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:09:08,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:08,817 INFO L85 PathProgramCache]: Analyzing trace with hash 914106059, now seen corresponding path program 1 times [2023-11-06 22:09:08,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:08,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55657623] [2023-11-06 22:09:08,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:08,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:08,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:09:08,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:08,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55657623] [2023-11-06 22:09:08,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55657623] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:09:08,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412191830] [2023-11-06 22:09:08,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:08,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:08,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:08,908 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:09:08,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:09:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:09,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:09:09,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:09,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:09:09,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:09:09,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:09:09,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412191830] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:09:09,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:09:09,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-11-06 22:09:09,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813396766] [2023-11-06 22:09:09,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:09:09,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:09:09,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:09,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:09:09,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:09:09,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 211 [2023-11-06 22:09:09,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 146 transitions, 1733 flow. Second operand has 8 states, 8 states have (on average 99.125) internal successors, (793), 8 states have internal predecessors, (793), 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 22:09:09,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:09,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 211 [2023-11-06 22:09:09,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:10,679 INFO L124 PetriNetUnfolderBase]: 6983/9383 cut-off events. [2023-11-06 22:09:10,679 INFO L125 PetriNetUnfolderBase]: For 60076/60885 co-relation queries the response was YES. [2023-11-06 22:09:10,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47981 conditions, 9383 events. 6983/9383 cut-off events. For 60076/60885 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 44815 event pairs, 307 based on Foata normal form. 648/9983 useless extension candidates. Maximal degree in co-relation 39905. Up to 4915 conditions per place. [2023-11-06 22:09:10,770 INFO L140 encePairwiseOnDemand]: 205/211 looper letters, 251 selfloop transitions, 30 changer transitions 0/303 dead transitions. [2023-11-06 22:09:10,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 303 transitions, 3778 flow [2023-11-06 22:09:10,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:09:10,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:09:10,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 753 transitions. [2023-11-06 22:09:10,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098171970209885 [2023-11-06 22:09:10,773 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 753 transitions. [2023-11-06 22:09:10,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 753 transitions. [2023-11-06 22:09:10,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:10,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 753 transitions. [2023-11-06 22:09:10,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 107.57142857142857) internal successors, (753), 7 states have internal predecessors, (753), 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 22:09:10,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 211.0) internal successors, (1688), 8 states have internal predecessors, (1688), 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 22:09:10,778 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 211.0) internal successors, (1688), 8 states have internal predecessors, (1688), 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 22:09:10,778 INFO L175 Difference]: Start difference. First operand has 101 places, 146 transitions, 1733 flow. Second operand 7 states and 753 transitions. [2023-11-06 22:09:10,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 303 transitions, 3778 flow [2023-11-06 22:09:10,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 303 transitions, 3585 flow, removed 26 selfloop flow, removed 6 redundant places. [2023-11-06 22:09:10,974 INFO L231 Difference]: Finished difference. Result has 104 places, 155 transitions, 1815 flow [2023-11-06 22:09:10,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=1648, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1815, PETRI_PLACES=104, PETRI_TRANSITIONS=155} [2023-11-06 22:09:10,975 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 66 predicate places. [2023-11-06 22:09:10,975 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 155 transitions, 1815 flow [2023-11-06 22:09:10,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 99.125) internal successors, (793), 8 states have internal predecessors, (793), 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 22:09:10,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:10,976 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] [2023-11-06 22:09:10,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-06 22:09:11,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-06 22:09:11,177 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:09:11,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:11,177 INFO L85 PathProgramCache]: Analyzing trace with hash -909552705, now seen corresponding path program 2 times [2023-11-06 22:09:11,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:11,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693928835] [2023-11-06 22:09:11,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:11,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:11,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:09:11,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:11,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693928835] [2023-11-06 22:09:11,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693928835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:11,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:11,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:09:11,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005431422] [2023-11-06 22:09:11,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:11,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:09:11,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:11,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:09:11,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:09:11,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 211 [2023-11-06 22:09:11,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 155 transitions, 1815 flow. Second operand has 5 states, 5 states have (on average 101.2) internal successors, (506), 5 states have internal predecessors, (506), 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 22:09:11,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:11,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 211 [2023-11-06 22:09:11,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:12,497 INFO L124 PetriNetUnfolderBase]: 7335/9773 cut-off events. [2023-11-06 22:09:12,498 INFO L125 PetriNetUnfolderBase]: For 76513/77826 co-relation queries the response was YES. [2023-11-06 22:09:12,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52100 conditions, 9773 events. 7335/9773 cut-off events. For 76513/77826 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 45973 event pairs, 1540 based on Foata normal form. 477/10118 useless extension candidates. Maximal degree in co-relation 43898. Up to 6551 conditions per place. [2023-11-06 22:09:12,584 INFO L140 encePairwiseOnDemand]: 206/211 looper letters, 241 selfloop transitions, 24 changer transitions 11/298 dead transitions. [2023-11-06 22:09:12,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 298 transitions, 4139 flow [2023-11-06 22:09:12,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:09:12,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:09:12,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 533 transitions. [2023-11-06 22:09:12,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052132701421801 [2023-11-06 22:09:12,586 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 533 transitions. [2023-11-06 22:09:12,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 533 transitions. [2023-11-06 22:09:12,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:12,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 533 transitions. [2023-11-06 22:09:12,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 106.6) internal successors, (533), 5 states have internal predecessors, (533), 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 22:09:12,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:09:12,589 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:09:12,589 INFO L175 Difference]: Start difference. First operand has 104 places, 155 transitions, 1815 flow. Second operand 5 states and 533 transitions. [2023-11-06 22:09:12,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 298 transitions, 4139 flow [2023-11-06 22:09:12,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 298 transitions, 4087 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:09:12,849 INFO L231 Difference]: Finished difference. Result has 109 places, 172 transitions, 2218 flow [2023-11-06 22:09:12,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=1795, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2218, PETRI_PLACES=109, PETRI_TRANSITIONS=172} [2023-11-06 22:09:12,850 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 71 predicate places. [2023-11-06 22:09:12,850 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 172 transitions, 2218 flow [2023-11-06 22:09:12,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.2) internal successors, (506), 5 states have internal predecessors, (506), 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 22:09:12,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:12,850 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] [2023-11-06 22:09:12,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-06 22:09:12,851 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:09:12,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:12,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1194644371, now seen corresponding path program 3 times [2023-11-06 22:09:12,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:12,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791554675] [2023-11-06 22:09:12,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:12,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:12,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:12,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:09:12,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:12,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791554675] [2023-11-06 22:09:12,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791554675] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:12,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:12,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:09:12,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11075447] [2023-11-06 22:09:12,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:12,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:09:12,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:12,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:09:12,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:09:12,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 211 [2023-11-06 22:09:12,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 172 transitions, 2218 flow. Second operand has 5 states, 5 states have (on average 101.2) internal successors, (506), 5 states have internal predecessors, (506), 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 22:09:12,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:12,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 211 [2023-11-06 22:09:12,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:14,440 INFO L124 PetriNetUnfolderBase]: 7274/9685 cut-off events. [2023-11-06 22:09:14,440 INFO L125 PetriNetUnfolderBase]: For 86011/87406 co-relation queries the response was YES. [2023-11-06 22:09:14,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54132 conditions, 9685 events. 7274/9685 cut-off events. For 86011/87406 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 45182 event pairs, 2264 based on Foata normal form. 507/10052 useless extension candidates. Maximal degree in co-relation 45425. Up to 8893 conditions per place. [2023-11-06 22:09:14,553 INFO L140 encePairwiseOnDemand]: 206/211 looper letters, 140 selfloop transitions, 46 changer transitions 11/219 dead transitions. [2023-11-06 22:09:14,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 219 transitions, 3153 flow [2023-11-06 22:09:14,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:09:14,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:09:14,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 530 transitions. [2023-11-06 22:09:14,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023696682464455 [2023-11-06 22:09:14,556 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 530 transitions. [2023-11-06 22:09:14,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 530 transitions. [2023-11-06 22:09:14,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:14,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 530 transitions. [2023-11-06 22:09:14,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 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 22:09:14,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:09:14,560 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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 22:09:14,560 INFO L175 Difference]: Start difference. First operand has 109 places, 172 transitions, 2218 flow. Second operand 5 states and 530 transitions. [2023-11-06 22:09:14,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 219 transitions, 3153 flow [2023-11-06 22:09:14,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 219 transitions, 3071 flow, removed 30 selfloop flow, removed 3 redundant places. [2023-11-06 22:09:14,819 INFO L231 Difference]: Finished difference. Result has 111 places, 186 transitions, 2565 flow [2023-11-06 22:09:14,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=2166, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2565, PETRI_PLACES=111, PETRI_TRANSITIONS=186} [2023-11-06 22:09:14,819 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 73 predicate places. [2023-11-06 22:09:14,820 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 186 transitions, 2565 flow [2023-11-06 22:09:14,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.2) internal successors, (506), 5 states have internal predecessors, (506), 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 22:09:14,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:14,820 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] [2023-11-06 22:09:14,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-06 22:09:14,821 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:09:14,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:14,822 INFO L85 PathProgramCache]: Analyzing trace with hash 315860727, now seen corresponding path program 4 times [2023-11-06 22:09:14,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:14,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564310679] [2023-11-06 22:09:14,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:14,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:14,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:09:14,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:14,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564310679] [2023-11-06 22:09:14,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564310679] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:09:14,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543314758] [2023-11-06 22:09:14,912 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:09:14,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:14,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:14,916 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:09:14,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:09:15,035 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:09:15,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:09:15,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:09:15,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:15,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:09:15,099 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:09:15,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:09:15,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543314758] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:09:15,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:09:15,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-06 22:09:15,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547653213] [2023-11-06 22:09:15,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:09:15,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:09:15,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:15,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:09:15,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:09:15,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 211 [2023-11-06 22:09:15,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 186 transitions, 2565 flow. Second operand has 10 states, 10 states have (on average 99.5) internal successors, (995), 10 states have internal predecessors, (995), 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 22:09:15,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:15,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 211 [2023-11-06 22:09:15,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:17,265 INFO L124 PetriNetUnfolderBase]: 9091/12214 cut-off events. [2023-11-06 22:09:17,265 INFO L125 PetriNetUnfolderBase]: For 100724/101829 co-relation queries the response was YES. [2023-11-06 22:09:17,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67853 conditions, 12214 events. 9091/12214 cut-off events. For 100724/101829 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 59712 event pairs, 1326 based on Foata normal form. 774/12904 useless extension candidates. Maximal degree in co-relation 56309. Up to 6745 conditions per place. [2023-11-06 22:09:17,359 INFO L140 encePairwiseOnDemand]: 205/211 looper letters, 384 selfloop transitions, 74 changer transitions 0/480 dead transitions. [2023-11-06 22:09:17,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 480 transitions, 6513 flow [2023-11-06 22:09:17,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:09:17,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:09:17,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1059 transitions. [2023-11-06 22:09:17,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5018957345971564 [2023-11-06 22:09:17,361 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1059 transitions. [2023-11-06 22:09:17,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1059 transitions. [2023-11-06 22:09:17,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:17,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1059 transitions. [2023-11-06 22:09:17,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 105.9) internal successors, (1059), 10 states have internal predecessors, (1059), 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 22:09:17,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 211.0) internal successors, (2321), 11 states have internal predecessors, (2321), 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 22:09:17,368 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 211.0) internal successors, (2321), 11 states have internal predecessors, (2321), 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 22:09:17,368 INFO L175 Difference]: Start difference. First operand has 111 places, 186 transitions, 2565 flow. Second operand 10 states and 1059 transitions. [2023-11-06 22:09:17,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 480 transitions, 6513 flow [2023-11-06 22:09:17,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 480 transitions, 6437 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-11-06 22:09:17,792 INFO L231 Difference]: Finished difference. Result has 122 places, 202 transitions, 2861 flow [2023-11-06 22:09:17,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=2489, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2861, PETRI_PLACES=122, PETRI_TRANSITIONS=202} [2023-11-06 22:09:17,793 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 84 predicate places. [2023-11-06 22:09:17,793 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 202 transitions, 2861 flow [2023-11-06 22:09:17,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 99.5) internal successors, (995), 10 states have internal predecessors, (995), 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 22:09:17,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:17,794 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] [2023-11-06 22:09:17,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:17,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-06 22:09:17,996 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:09:17,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:17,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1304938029, now seen corresponding path program 5 times [2023-11-06 22:09:17,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:17,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764787739] [2023-11-06 22:09:17,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:17,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:18,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:09:18,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:18,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764787739] [2023-11-06 22:09:18,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764787739] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:09:18,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216965951] [2023-11-06 22:09:18,076 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:09:18,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:18,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:18,078 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:09:18,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:09:18,213 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-06 22:09:18,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:09:18,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:09:18,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:18,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:09:18,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:09:18,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:09:18,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216965951] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:09:18,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:09:18,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-06 22:09:18,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155404701] [2023-11-06 22:09:18,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:09:18,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:09:18,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:18,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:09:18,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:09:18,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 211 [2023-11-06 22:09:18,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 202 transitions, 2861 flow. Second operand has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 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 22:09:18,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:18,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 211 [2023-11-06 22:09:18,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:20,578 INFO L124 PetriNetUnfolderBase]: 10085/13611 cut-off events. [2023-11-06 22:09:20,578 INFO L125 PetriNetUnfolderBase]: For 124778/125077 co-relation queries the response was YES. [2023-11-06 22:09:20,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79353 conditions, 13611 events. 10085/13611 cut-off events. For 124778/125077 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 66638 event pairs, 523 based on Foata normal form. 723/14329 useless extension candidates. Maximal degree in co-relation 67802. Up to 7476 conditions per place. [2023-11-06 22:09:20,718 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 438 selfloop transitions, 142 changer transitions 2/598 dead transitions. [2023-11-06 22:09:20,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 598 transitions, 8385 flow [2023-11-06 22:09:20,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:09:20,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 22:09:20,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1427 transitions. [2023-11-06 22:09:20,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.483073798239675 [2023-11-06 22:09:20,721 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1427 transitions. [2023-11-06 22:09:20,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1427 transitions. [2023-11-06 22:09:20,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:20,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1427 transitions. [2023-11-06 22:09:20,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 101.92857142857143) internal successors, (1427), 14 states have internal predecessors, (1427), 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 22:09:20,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 211.0) internal successors, (3165), 15 states have internal predecessors, (3165), 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 22:09:20,728 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 211.0) internal successors, (3165), 15 states have internal predecessors, (3165), 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 22:09:20,728 INFO L175 Difference]: Start difference. First operand has 122 places, 202 transitions, 2861 flow. Second operand 14 states and 1427 transitions. [2023-11-06 22:09:20,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 598 transitions, 8385 flow [2023-11-06 22:09:21,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 598 transitions, 8065 flow, removed 20 selfloop flow, removed 5 redundant places. [2023-11-06 22:09:21,575 INFO L231 Difference]: Finished difference. Result has 133 places, 293 transitions, 4216 flow [2023-11-06 22:09:21,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=2715, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4216, PETRI_PLACES=133, PETRI_TRANSITIONS=293} [2023-11-06 22:09:21,576 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 95 predicate places. [2023-11-06 22:09:21,576 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 293 transitions, 4216 flow [2023-11-06 22:09:21,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 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 22:09:21,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:21,577 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] [2023-11-06 22:09:21,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-06 22:09:21,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:21,778 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:09:21,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:21,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1382660204, now seen corresponding path program 1 times [2023-11-06 22:09:21,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:21,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425884559] [2023-11-06 22:09:21,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:21,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:21,941 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:09:21,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:21,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425884559] [2023-11-06 22:09:21,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425884559] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:09:21,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719339798] [2023-11-06 22:09:21,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:21,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:21,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:21,943 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:09:21,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:09:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:22,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:09:22,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:22,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:09:22,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:09:22,271 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:09:22,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719339798] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:09:22,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:09:22,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2023-11-06 22:09:22,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528284385] [2023-11-06 22:09:22,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:09:22,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:09:22,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:22,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:09:22,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:09:22,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 211 [2023-11-06 22:09:22,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 293 transitions, 4216 flow. Second operand has 9 states, 9 states have (on average 110.88888888888889) internal successors, (998), 9 states have internal predecessors, (998), 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 22:09:22,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:22,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 211 [2023-11-06 22:09:22,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:26,384 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([471] L62-4-->L62-4: Formula: (and (= (+ v_thread3Thread1of1ForFork0_~i~2_36 1) v_thread3Thread1of1ForFork0_~i~2_35) (< v_thread3Thread1of1ForFork0_~i~2_36 v_~N~0_47) (= (+ v_~counter2~0_55 1) v_~counter2~0_54)) InVars {~counter2~0=v_~counter2~0_55, thread3Thread1of1ForFork0_~i~2=v_thread3Thread1of1ForFork0_~i~2_36, ~N~0=v_~N~0_47} OutVars{~counter2~0=v_~counter2~0_54, thread3Thread1of1ForFork0_~i~2=v_thread3Thread1of1ForFork0_~i~2_35, thread3Thread1of1ForFork0_#t~post6=|v_thread3Thread1of1ForFork0_#t~post6_7|, ~N~0=v_~N~0_47, thread3Thread1of1ForFork0_#t~post5=|v_thread3Thread1of1ForFork0_#t~post5_15|} AuxVars[] AssignedVars[~counter2~0, thread3Thread1of1ForFork0_~i~2, thread3Thread1of1ForFork0_#t~post6, thread3Thread1of1ForFork0_#t~post5][312], [60#L62-4true, Black: 134#(= ~counter2~0 ~counter1~0), Black: 493#(and (= |thread2Thread1of1ForFork3_~i~1#1| 0) (= thread1Thread1of1ForFork1_~i~0 0)), Black: 139#(= ~counter2~0 0), Black: 492#(= |thread2Thread1of1ForFork3_~i~1#1| 0), Black: 651#(and (<= 1 ~N~0) (= |thread2Thread1of1ForFork3_~i~1#1| 0) (<= 0 thread1Thread1of1ForFork1_~i~0)), Black: 658#(= thread1Thread1of1ForFork1_~i~0 0), Black: 659#(and (= thread1Thread1of1ForFork1_~i~0 0) (= thread3Thread1of1ForFork0_~i~2 0)), Black: 928#(<= ~N~0 0), Black: 675#(= thread3Thread1of1ForFork0_~i~2 0), Black: 676#(and (= thread1Thread1of1ForFork1_~i~0 0) (= thread3Thread1of1ForFork0_~i~2 0)), 490#true, Black: 1189#(and (<= 0 thread1Thread1of1ForFork1_~i~0) (<= |thread4Thread1of1ForFork2_~i~3#1| 0)), 958#(and (= |thread4Thread1of1ForFork2_~i~3#1| 0) (<= 1 ~N~0)), Black: 684#(and (= |thread2Thread1of1ForFork3_~i~1#1| 0) (= thread3Thread1of1ForFork0_~i~2 0)), Black: 1154#(and (= |thread4Thread1of1ForFork2_~i~3#1| 0) (<= 1 ~N~0)), Black: 685#(and (<= 1 ~N~0) (= |thread2Thread1of1ForFork3_~i~1#1| 0)), Black: 1323#(and (= |thread4Thread1of1ForFork2_~i~3#1| 0) (<= 1 ~N~0) (<= 0 thread1Thread1of1ForFork1_~i~0)), Black: 683#(= thread3Thread1of1ForFork0_~i~2 0), Black: 1193#(and (<= 1 ~N~0) (<= |thread4Thread1of1ForFork2_~i~3#1| 0)), Black: 301#(and (<= 1 ~N~0) (<= 0 thread1Thread1of1ForFork1_~i~0)), Black: 144#(= thread1Thread1of1ForFork1_~i~0 0), Black: 692#(= |thread2Thread1of1ForFork3_~i~1#1| 0), Black: 693#(and (= |thread2Thread1of1ForFork3_~i~1#1| 0) (= thread3Thread1of1ForFork0_~i~2 0)), Black: 312#(= ~counter1~0 0), 920#(<= 1 ~N~0), 111#L51-4true, 113#L72-4true, 145#(<= 1 ~N~0), 1135#(= |thread4Thread1of1ForFork2_~i~3#1| 0), 1525#true, 94#L93-1true, 1386#(and (<= 1 ~N~0) (<= |thread4Thread1of1ForFork2_~i~3#1| 0)), Black: 326#(<= 1 ~N~0), Black: 484#(and (<= 1 ~N~0) (= |thread2Thread1of1ForFork3_~i~1#1| 0) (<= 0 thread3Thread1of1ForFork0_~i~2)), Black: 327#(and (<= 1 ~N~0) (= |thread2Thread1of1ForFork3_~i~1#1| 0)), Black: 1125#(and (<= 1 ~N~0) (<= 0 thread1Thread1of1ForFork1_~i~0)), Black: 1127#(and (= |thread4Thread1of1ForFork2_~i~3#1| 0) (<= 1 ~N~0) (<= 0 thread1Thread1of1ForFork1_~i~0)), Black: 957#(<= 1 ~N~0), Black: 1509#(and (<= 1 ~N~0) (<= 0 thread1Thread1of1ForFork1_~i~0) (<= |thread4Thread1of1ForFork2_~i~3#1| 0)), Black: 1515#(and (<= 1 ~N~0) (<= 0 thread1Thread1of1ForFork1_~i~0) (<= |thread4Thread1of1ForFork2_~i~3#1| 0) (= thread3Thread1of1ForFork0_~i~2 0)), Black: 1512#(and (= |thread4Thread1of1ForFork2_~i~3#1| 0) (<= 1 ~N~0) (<= 0 thread1Thread1of1ForFork1_~i~0)), Black: 721#(= thread1Thread1of1ForFork1_~i~0 0), Black: 1136#(and (= |thread4Thread1of1ForFork2_~i~3#1| 0) (= thread1Thread1of1ForFork1_~i~0 0)), Black: 743#(and (<= 0 thread1Thread1of1ForFork1_~i~0) (<= |thread2Thread1of1ForFork3_~i~1#1| 0)), 482#(and (<= 1 ~N~0) (<= 0 thread3Thread1of1ForFork0_~i~2)), Black: 747#(and (<= 1 ~N~0) (<= |thread2Thread1of1ForFork3_~i~1#1| 0)), Black: 1144#(= thread1Thread1of1ForFork1_~i~0 0), Black: 1145#(and (= |thread4Thread1of1ForFork2_~i~3#1| 0) (= thread1Thread1of1ForFork1_~i~0 0))]) [2023-11-06 22:09:26,384 INFO L294 olderBase$Statistics]: this new event has 20 ancestors and is cut-off event [2023-11-06 22:09:26,385 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2023-11-06 22:09:26,385 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2023-11-06 22:09:26,385 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2023-11-06 22:09:28,743 INFO L124 PetriNetUnfolderBase]: 29958/40352 cut-off events. [2023-11-06 22:09:28,743 INFO L125 PetriNetUnfolderBase]: For 332361/336018 co-relation queries the response was YES. [2023-11-06 22:09:28,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231627 conditions, 40352 events. 29958/40352 cut-off events. For 332361/336018 co-relation queries the response was YES. Maximal size of possible extension queue 1876. Compared 233105 event pairs, 1661 based on Foata normal form. 1837/41654 useless extension candidates. Maximal degree in co-relation 194753. Up to 23049 conditions per place. [2023-11-06 22:09:29,129 INFO L140 encePairwiseOnDemand]: 205/211 looper letters, 397 selfloop transitions, 338 changer transitions 7/800 dead transitions. [2023-11-06 22:09:29,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 800 transitions, 11414 flow [2023-11-06 22:09:29,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:09:29,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:09:29,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 987 transitions. [2023-11-06 22:09:29,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5847156398104265 [2023-11-06 22:09:29,132 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 987 transitions. [2023-11-06 22:09:29,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 987 transitions. [2023-11-06 22:09:29,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:29,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 987 transitions. [2023-11-06 22:09:29,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 123.375) internal successors, (987), 8 states have internal predecessors, (987), 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 22:09:29,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 211.0) internal successors, (1899), 9 states have internal predecessors, (1899), 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 22:09:29,137 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 211.0) internal successors, (1899), 9 states have internal predecessors, (1899), 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 22:09:29,137 INFO L175 Difference]: Start difference. First operand has 133 places, 293 transitions, 4216 flow. Second operand 8 states and 987 transitions. [2023-11-06 22:09:29,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 800 transitions, 11414 flow [2023-11-06 22:09:36,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 800 transitions, 11298 flow, removed 58 selfloop flow, removed 1 redundant places. [2023-11-06 22:09:36,636 INFO L231 Difference]: Finished difference. Result has 142 places, 579 transitions, 9128 flow [2023-11-06 22:09:36,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=4170, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9128, PETRI_PLACES=142, PETRI_TRANSITIONS=579} [2023-11-06 22:09:36,636 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 104 predicate places. [2023-11-06 22:09:36,637 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 579 transitions, 9128 flow [2023-11-06 22:09:36,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 110.88888888888889) internal successors, (998), 9 states have internal predecessors, (998), 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 22:09:36,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:36,637 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 22:09:36,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:36,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:36,838 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:09:36,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:36,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1441098718, now seen corresponding path program 2 times [2023-11-06 22:09:36,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:36,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444774575] [2023-11-06 22:09:36,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:36,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:36,987 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:36,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:36,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444774575] [2023-11-06 22:09:36,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444774575] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:09:36,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318991648] [2023-11-06 22:09:36,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:09:36,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:36,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:36,989 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:09:37,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079f2408-695b-42b0-b447-c067c73a8747/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:09:37,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:09:37,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:09:37,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:09:37,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:37,209 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:37,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:09:37,277 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:37,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318991648] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:09:37,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:09:37,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-06 22:09:37,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440491507] [2023-11-06 22:09:37,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:09:37,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:09:37,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:37,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:09:37,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:09:37,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 211 [2023-11-06 22:09:37,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 579 transitions, 9128 flow. Second operand has 12 states, 12 states have (on average 94.0) internal successors, (1128), 12 states have internal predecessors, (1128), 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 22:09:37,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:37,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 211 [2023-11-06 22:09:37,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand