./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:12:51,894 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:12:51,956 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 13:12:51,960 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:12:51,961 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:12:51,981 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:12:51,982 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:12:51,982 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:12:51,982 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:12:51,983 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:12:51,983 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:12:51,983 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:12:51,983 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:12:51,983 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:12:51,983 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:12:51,984 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:12:51,984 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:12:51,984 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:12:51,984 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:12:51,984 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:12:51,984 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:12:51,985 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:12:51,985 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:12:51,985 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:12:51,985 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:12:51,985 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:12:51,985 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:12:51,986 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:12:51,986 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:12:51,986 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:12:51,986 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:12:51,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:12:51,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:12:51,987 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:12:51,987 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:12:51,987 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:12:51,987 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:12:51,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:12:51,991 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:12:51,991 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:12:51,991 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:12:51,991 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:12:51,991 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f [2024-11-13 13:12:52,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:12:52,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:12:52,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:12:52,345 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:12:52,346 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:12:52,348 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c Unable to find full path for "g++" [2024-11-13 13:12:54,402 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:12:54,679 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:12:54,680 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2024-11-13 13:12:54,692 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/data/2d7d46249/b05af008988a4315a8c4412c86232eb9/FLAG0daf79584 [2024-11-13 13:12:54,717 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/data/2d7d46249/b05af008988a4315a8c4412c86232eb9 [2024-11-13 13:12:54,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:12:54,723 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:12:54,724 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:12:54,726 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:12:54,731 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:12:54,732 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:12:54" (1/1) ... [2024-11-13 13:12:54,733 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48cce89b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:12:54, skipping insertion in model container [2024-11-13 13:12:54,735 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:12:54" (1/1) ... [2024-11-13 13:12:54,758 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:12:54,989 WARN L250 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_006d93c8-77b8-4171-959d-85e5e0c9494b/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c[3066,3079] [2024-11-13 13:12:54,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:12:55,013 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:12:55,052 WARN L250 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_006d93c8-77b8-4171-959d-85e5e0c9494b/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c[3066,3079] [2024-11-13 13:12:55,055 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:12:55,076 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:12:55,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:12:55 WrapperNode [2024-11-13 13:12:55,078 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:12:55,079 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:12:55,080 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:12:55,081 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:12:55,089 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:12:55" (1/1) ... [2024-11-13 13:12:55,098 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:12:55" (1/1) ... [2024-11-13 13:12:55,138 INFO L138 Inliner]: procedures = 21, calls = 30, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 133 [2024-11-13 13:12:55,138 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:12:55,139 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:12:55,141 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:12:55,141 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:12:55,152 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:12:55" (1/1) ... [2024-11-13 13:12:55,152 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:12:55" (1/1) ... [2024-11-13 13:12:55,154 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:12:55" (1/1) ... [2024-11-13 13:12:55,180 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 13:12:55,181 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:12:55" (1/1) ... [2024-11-13 13:12:55,181 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:12:55" (1/1) ... [2024-11-13 13:12:55,189 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:12:55" (1/1) ... [2024-11-13 13:12:55,197 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:12:55" (1/1) ... [2024-11-13 13:12:55,198 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:12:55" (1/1) ... [2024-11-13 13:12:55,206 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:12:55" (1/1) ... [2024-11-13 13:12:55,209 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:12:55,209 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:12:55,210 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:12:55,210 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:12:55,211 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:12:55" (1/1) ... [2024-11-13 13:12:55,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:12:55,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:12:55,255 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:12:55,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:12:55,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:12:55,295 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 13:12:55,295 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 13:12:55,295 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 13:12:55,295 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 13:12:55,295 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-13 13:12:55,295 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-13 13:12:55,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:12:55,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-13 13:12:55,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-13 13:12:55,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:12:55,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:12:55,297 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 13:12:55,402 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:12:55,405 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:12:55,700 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 13:12:55,700 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:12:55,921 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:12:55,921 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 13:12:55,923 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:12:55 BoogieIcfgContainer [2024-11-13 13:12:55,924 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:12:55,927 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:12:55,927 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:12:55,932 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:12:55,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:12:54" (1/3) ... [2024-11-13 13:12:55,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c0bd1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:12:55, skipping insertion in model container [2024-11-13 13:12:55,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:12:55" (2/3) ... [2024-11-13 13:12:55,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c0bd1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:12:55, skipping insertion in model container [2024-11-13 13:12:55,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:12:55" (3/3) ... [2024-11-13 13:12:55,938 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2024-11-13 13:12:55,959 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:12:55,960 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-misc-5.wvr.c that has 4 procedures, 33 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-13 13:12:55,960 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 13:12:56,051 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-13 13:12:56,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 36 transitions, 93 flow [2024-11-13 13:12:56,137 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2024-11-13 13:12:56,144 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-13 13:12:56,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 33 events. 4/33 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 70 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2024-11-13 13:12:56,167 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 36 transitions, 93 flow [2024-11-13 13:12:56,175 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 32 transitions, 82 flow [2024-11-13 13:12:56,185 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:12:56,203 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@20cbbd00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:12:56,203 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-13 13:12:56,224 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:12:56,224 INFO L124 PetriNetUnfolderBase]: 4/31 cut-off events. [2024-11-13 13:12:56,224 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-13 13:12:56,225 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:12:56,225 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:12:56,226 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:12:56,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:12:56,231 INFO L85 PathProgramCache]: Analyzing trace with hash 996614308, now seen corresponding path program 1 times [2024-11-13 13:12:56,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:12:56,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499613983] [2024-11-13 13:12:56,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:12:56,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:12:56,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:12:57,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:12:57,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:12:57,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499613983] [2024-11-13 13:12:57,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499613983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:12:57,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:12:57,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:12:57,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068102455] [2024-11-13 13:12:57,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:12:57,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:12:57,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:12:57,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:12:57,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:12:57,168 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-13 13:12:57,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:12:57,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:12:57,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-13 13:12:57,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:12:57,987 INFO L124 PetriNetUnfolderBase]: 1930/2760 cut-off events. [2024-11-13 13:12:57,987 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2024-11-13 13:12:57,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5645 conditions, 2760 events. 1930/2760 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 13547 event pairs, 66 based on Foata normal form. 0/2246 useless extension candidates. Maximal degree in co-relation 5542. Up to 970 conditions per place. [2024-11-13 13:12:58,013 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 71 selfloop transitions, 8 changer transitions 6/91 dead transitions. [2024-11-13 13:12:58,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 91 transitions, 385 flow [2024-11-13 13:12:58,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:12:58,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 13:12:58,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-11-13 13:12:58,033 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2024-11-13 13:12:58,035 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 82 flow. Second operand 6 states and 141 transitions. [2024-11-13 13:12:58,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 91 transitions, 385 flow [2024-11-13 13:12:58,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 91 transitions, 363 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-13 13:12:58,049 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 120 flow [2024-11-13 13:12:58,053 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=120, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2024-11-13 13:12:58,058 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 2 predicate places. [2024-11-13 13:12:58,059 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 120 flow [2024-11-13 13:12:58,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:12:58,060 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:12:58,060 INFO L204 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] [2024-11-13 13:12:58,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:12:58,060 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:12:58,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:12:58,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1398444606, now seen corresponding path program 1 times [2024-11-13 13:12:58,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:12:58,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186420285] [2024-11-13 13:12:58,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:12:58,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:12:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:12:58,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:12:58,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:12:58,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186420285] [2024-11-13 13:12:58,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186420285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:12:58,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:12:58,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:12:58,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45784234] [2024-11-13 13:12:58,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:12:58,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:12:58,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:12:58,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:12:58,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:12:58,224 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-13 13:12:58,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:12:58,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:12:58,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-13 13:12:58,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:12:58,553 INFO L124 PetriNetUnfolderBase]: 1274/1985 cut-off events. [2024-11-13 13:12:58,554 INFO L125 PetriNetUnfolderBase]: For 484/518 co-relation queries the response was YES. [2024-11-13 13:12:58,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4363 conditions, 1985 events. 1274/1985 cut-off events. For 484/518 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 9821 event pairs, 424 based on Foata normal form. 86/1666 useless extension candidates. Maximal degree in co-relation 3922. Up to 1047 conditions per place. [2024-11-13 13:12:58,568 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 45 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2024-11-13 13:12:58,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 59 transitions, 273 flow [2024-11-13 13:12:58,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:12:58,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:12:58,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-11-13 13:12:58,571 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7407407407407407 [2024-11-13 13:12:58,571 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 120 flow. Second operand 3 states and 80 transitions. [2024-11-13 13:12:58,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 59 transitions, 273 flow [2024-11-13 13:12:58,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 59 transitions, 273 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 13:12:58,577 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 134 flow [2024-11-13 13:12:58,578 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2024-11-13 13:12:58,578 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 5 predicate places. [2024-11-13 13:12:58,579 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 134 flow [2024-11-13 13:12:58,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:12:58,580 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:12:58,580 INFO L204 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] [2024-11-13 13:12:58,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:12:58,580 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:12:58,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:12:58,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1095901154, now seen corresponding path program 1 times [2024-11-13 13:12:58,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:12:58,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978321494] [2024-11-13 13:12:58,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:12:58,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:12:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:12:58,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:12:58,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:12:58,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978321494] [2024-11-13 13:12:58,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978321494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:12:58,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:12:58,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:12:58,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988060616] [2024-11-13 13:12:58,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:12:58,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:12:58,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:12:58,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:12:58,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:12:58,707 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-13 13:12:58,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:12:58,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:12:58,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-13 13:12:58,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:12:59,105 INFO L124 PetriNetUnfolderBase]: 1715/2705 cut-off events. [2024-11-13 13:12:59,107 INFO L125 PetriNetUnfolderBase]: For 968/1026 co-relation queries the response was YES. [2024-11-13 13:12:59,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6284 conditions, 2705 events. 1715/2705 cut-off events. For 968/1026 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 14216 event pairs, 587 based on Foata normal form. 114/2305 useless extension candidates. Maximal degree in co-relation 5840. Up to 1613 conditions per place. [2024-11-13 13:12:59,130 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 44 selfloop transitions, 2 changer transitions 1/59 dead transitions. [2024-11-13 13:12:59,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 59 transitions, 291 flow [2024-11-13 13:12:59,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:12:59,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:12:59,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-11-13 13:12:59,133 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2024-11-13 13:12:59,134 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 134 flow. Second operand 3 states and 78 transitions. [2024-11-13 13:12:59,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 59 transitions, 291 flow [2024-11-13 13:12:59,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 59 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:12:59,140 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 148 flow [2024-11-13 13:12:59,140 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-11-13 13:12:59,142 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2024-11-13 13:12:59,143 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 148 flow [2024-11-13 13:12:59,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:12:59,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:12:59,143 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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] [2024-11-13 13:12:59,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:12:59,144 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:12:59,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:12:59,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1172703390, now seen corresponding path program 1 times [2024-11-13 13:12:59,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:12:59,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541342008] [2024-11-13 13:12:59,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:12:59,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:12:59,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:12:59,417 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:12:59,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:12:59,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541342008] [2024-11-13 13:12:59,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541342008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:12:59,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:12:59,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:12:59,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622464894] [2024-11-13 13:12:59,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:12:59,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:12:59,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:12:59,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:12:59,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:12:59,432 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-13 13:12:59,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:12:59,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:12:59,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-13 13:12:59,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:12:59,940 INFO L124 PetriNetUnfolderBase]: 2217/3273 cut-off events. [2024-11-13 13:12:59,941 INFO L125 PetriNetUnfolderBase]: For 1592/1636 co-relation queries the response was YES. [2024-11-13 13:12:59,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8230 conditions, 3273 events. 2217/3273 cut-off events. For 1592/1636 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14718 event pairs, 156 based on Foata normal form. 44/2841 useless extension candidates. Maximal degree in co-relation 7532. Up to 1635 conditions per place. [2024-11-13 13:12:59,958 INFO L140 encePairwiseOnDemand]: 32/36 looper letters, 53 selfloop transitions, 5 changer transitions 0/66 dead transitions. [2024-11-13 13:12:59,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 66 transitions, 353 flow [2024-11-13 13:12:59,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:12:59,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:12:59,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-11-13 13:12:59,960 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5902777777777778 [2024-11-13 13:12:59,960 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 148 flow. Second operand 4 states and 85 transitions. [2024-11-13 13:12:59,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 66 transitions, 353 flow [2024-11-13 13:12:59,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 66 transitions, 350 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:12:59,965 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 173 flow [2024-11-13 13:12:59,965 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-11-13 13:12:59,966 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 11 predicate places. [2024-11-13 13:12:59,966 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 173 flow [2024-11-13 13:12:59,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:12:59,967 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:12:59,968 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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] [2024-11-13 13:12:59,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:12:59,968 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:12:59,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:12:59,968 INFO L85 PathProgramCache]: Analyzing trace with hash 69773514, now seen corresponding path program 2 times [2024-11-13 13:12:59,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:12:59,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654068240] [2024-11-13 13:12:59,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:12:59,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:12:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:00,240 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:13:00,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:00,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654068240] [2024-11-13 13:13:00,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654068240] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:00,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619533447] [2024-11-13 13:13:00,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:13:00,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:00,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:00,245 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:00,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:13:00,357 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:13:00,357 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:13:00,359 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 13:13:00,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:00,506 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:00,506 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:00,653 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:00,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619533447] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:13:00,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:13:00,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 9 [2024-11-13 13:13:00,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976987180] [2024-11-13 13:13:00,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:13:00,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 13:13:00,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:00,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 13:13:00,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:13:00,680 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-13 13:13:00,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 173 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:00,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:00,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-13 13:13:00,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:01,388 INFO L124 PetriNetUnfolderBase]: 2936/4328 cut-off events. [2024-11-13 13:13:01,388 INFO L125 PetriNetUnfolderBase]: For 2399/2456 co-relation queries the response was YES. [2024-11-13 13:13:01,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11073 conditions, 4328 events. 2936/4328 cut-off events. For 2399/2456 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 21948 event pairs, 111 based on Foata normal form. 165/3964 useless extension candidates. Maximal degree in co-relation 10560. Up to 2614 conditions per place. [2024-11-13 13:13:01,419 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 70 selfloop transitions, 9 changer transitions 1/87 dead transitions. [2024-11-13 13:13:01,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 87 transitions, 477 flow [2024-11-13 13:13:01,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:13:01,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 13:13:01,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-11-13 13:13:01,422 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5787037037037037 [2024-11-13 13:13:01,422 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 173 flow. Second operand 6 states and 125 transitions. [2024-11-13 13:13:01,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 87 transitions, 477 flow [2024-11-13 13:13:01,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 87 transitions, 473 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:13:01,435 INFO L231 Difference]: Finished difference. Result has 56 places, 44 transitions, 210 flow [2024-11-13 13:13:01,435 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=210, PETRI_PLACES=56, PETRI_TRANSITIONS=44} [2024-11-13 13:13:01,436 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 18 predicate places. [2024-11-13 13:13:01,436 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 44 transitions, 210 flow [2024-11-13 13:13:01,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:01,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:01,441 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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] [2024-11-13 13:13:01,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:13:01,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:01,642 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:13:01,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:01,643 INFO L85 PathProgramCache]: Analyzing trace with hash 2009429078, now seen corresponding path program 3 times [2024-11-13 13:13:01,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:01,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277412919] [2024-11-13 13:13:01,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:01,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:01,844 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:13:01,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:01,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277412919] [2024-11-13 13:13:01,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277412919] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:01,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:01,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:13:01,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82303660] [2024-11-13 13:13:01,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:01,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:13:01,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:01,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:13:01,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:13:01,871 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-13 13:13:01,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 44 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:01,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:01,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-13 13:13:01,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:02,566 INFO L124 PetriNetUnfolderBase]: 4229/6275 cut-off events. [2024-11-13 13:13:02,566 INFO L125 PetriNetUnfolderBase]: For 5699/5827 co-relation queries the response was YES. [2024-11-13 13:13:02,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16873 conditions, 6275 events. 4229/6275 cut-off events. For 5699/5827 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 32919 event pairs, 848 based on Foata normal form. 250/5719 useless extension candidates. Maximal degree in co-relation 13488. Up to 2457 conditions per place. [2024-11-13 13:13:02,612 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 69 selfloop transitions, 6 changer transitions 2/86 dead transitions. [2024-11-13 13:13:02,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 86 transitions, 518 flow [2024-11-13 13:13:02,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:13:02,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 13:13:02,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-11-13 13:13:02,613 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6055555555555555 [2024-11-13 13:13:02,613 INFO L175 Difference]: Start difference. First operand has 56 places, 44 transitions, 210 flow. Second operand 5 states and 109 transitions. [2024-11-13 13:13:02,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 86 transitions, 518 flow [2024-11-13 13:13:02,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 86 transitions, 492 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-13 13:13:02,629 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 204 flow [2024-11-13 13:13:02,630 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=204, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2024-11-13 13:13:02,630 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 19 predicate places. [2024-11-13 13:13:02,630 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 204 flow [2024-11-13 13:13:02,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:02,631 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:02,631 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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] [2024-11-13 13:13:02,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 13:13:02,631 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:13:02,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:02,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1478879976, now seen corresponding path program 4 times [2024-11-13 13:13:02,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:02,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140731813] [2024-11-13 13:13:02,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:02,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:02,974 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:02,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:02,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140731813] [2024-11-13 13:13:02,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140731813] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:02,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129059500] [2024-11-13 13:13:02,975 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:13:02,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:02,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:02,978 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:02,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:13:03,073 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:13:03,074 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:13:03,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 13:13:03,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:03,237 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:03,237 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:03,465 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:03,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129059500] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:13:03,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:13:03,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 7] total 14 [2024-11-13 13:13:03,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883344490] [2024-11-13 13:13:03,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:13:03,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 13:13:03,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:03,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 13:13:03,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-13 13:13:03,539 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-13 13:13:03,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 204 flow. Second operand has 15 states, 15 states have (on average 11.866666666666667) internal successors, (178), 15 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:03,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:03,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-13 13:13:03,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:05,466 INFO L124 PetriNetUnfolderBase]: 9235/14017 cut-off events. [2024-11-13 13:13:05,466 INFO L125 PetriNetUnfolderBase]: For 15229/15344 co-relation queries the response was YES. [2024-11-13 13:13:05,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37905 conditions, 14017 events. 9235/14017 cut-off events. For 15229/15344 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 85273 event pairs, 1191 based on Foata normal form. 429/12749 useless extension candidates. Maximal degree in co-relation 33095. Up to 3700 conditions per place. [2024-11-13 13:13:05,535 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 155 selfloop transitions, 35 changer transitions 27/225 dead transitions. [2024-11-13 13:13:05,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 225 transitions, 1308 flow [2024-11-13 13:13:05,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 13:13:05,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-13 13:13:05,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 329 transitions. [2024-11-13 13:13:05,538 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6092592592592593 [2024-11-13 13:13:05,538 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 204 flow. Second operand 15 states and 329 transitions. [2024-11-13 13:13:05,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 225 transitions, 1308 flow [2024-11-13 13:13:05,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 225 transitions, 1291 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 13:13:05,555 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 546 flow [2024-11-13 13:13:05,556 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=546, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2024-11-13 13:13:05,556 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 40 predicate places. [2024-11-13 13:13:05,556 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 546 flow [2024-11-13 13:13:05,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.866666666666667) internal successors, (178), 15 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:05,558 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:05,558 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:05,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 13:13:05,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-13 13:13:05,763 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:13:05,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:05,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1618583870, now seen corresponding path program 5 times [2024-11-13 13:13:05,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:05,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940265089] [2024-11-13 13:13:05,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:05,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:05,862 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:13:05,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:05,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940265089] [2024-11-13 13:13:05,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940265089] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:05,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749770736] [2024-11-13 13:13:05,863 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 13:13:05,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:05,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:05,865 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:05,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:13:05,954 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-13 13:13:05,954 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:13:05,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:13:05,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:06,086 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:06,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:06,135 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:13:06,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749770736] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:13:06,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:13:06,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2024-11-13 13:13:06,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050288411] [2024-11-13 13:13:06,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:13:06,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:13:06,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:06,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:13:06,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:13:06,139 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-13 13:13:06,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 546 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:06,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:06,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-13 13:13:06,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:07,332 INFO L124 PetriNetUnfolderBase]: 7392/11805 cut-off events. [2024-11-13 13:13:07,332 INFO L125 PetriNetUnfolderBase]: For 23853/24311 co-relation queries the response was YES. [2024-11-13 13:13:07,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36540 conditions, 11805 events. 7392/11805 cut-off events. For 23853/24311 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 74484 event pairs, 3683 based on Foata normal form. 466/10684 useless extension candidates. Maximal degree in co-relation 34510. Up to 4310 conditions per place. [2024-11-13 13:13:07,483 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 108 selfloop transitions, 14 changer transitions 0/143 dead transitions. [2024-11-13 13:13:07,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 143 transitions, 1257 flow [2024-11-13 13:13:07,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:13:07,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:13:07,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-11-13 13:13:07,485 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7847222222222222 [2024-11-13 13:13:07,485 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 546 flow. Second operand 4 states and 113 transitions. [2024-11-13 13:13:07,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 143 transitions, 1257 flow [2024-11-13 13:13:07,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 143 transitions, 1051 flow, removed 76 selfloop flow, removed 6 redundant places. [2024-11-13 13:13:07,701 INFO L231 Difference]: Finished difference. Result has 77 places, 83 transitions, 589 flow [2024-11-13 13:13:07,702 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=589, PETRI_PLACES=77, PETRI_TRANSITIONS=83} [2024-11-13 13:13:07,703 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 39 predicate places. [2024-11-13 13:13:07,704 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 83 transitions, 589 flow [2024-11-13 13:13:07,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:07,705 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:07,705 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:07,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 13:13:07,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-13 13:13:07,910 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:13:07,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:07,911 INFO L85 PathProgramCache]: Analyzing trace with hash -363737132, now seen corresponding path program 1 times [2024-11-13 13:13:07,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:07,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377037498] [2024-11-13 13:13:07,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:07,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:08,077 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:13:08,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:08,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377037498] [2024-11-13 13:13:08,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377037498] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:08,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765211343] [2024-11-13 13:13:08,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:08,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:08,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:08,082 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:08,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:13:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:08,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:13:08,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:08,229 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:08,229 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:08,279 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:13:08,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765211343] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:13:08,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:13:08,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2024-11-13 13:13:08,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939608701] [2024-11-13 13:13:08,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:13:08,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:13:08,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:08,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:13:08,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:13:08,281 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-13 13:13:08,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 83 transitions, 589 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:08,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:08,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-13 13:13:08,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:10,488 INFO L124 PetriNetUnfolderBase]: 15353/24646 cut-off events. [2024-11-13 13:13:10,488 INFO L125 PetriNetUnfolderBase]: For 39989/40815 co-relation queries the response was YES. [2024-11-13 13:13:10,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73414 conditions, 24646 events. 15353/24646 cut-off events. For 39989/40815 co-relation queries the response was YES. Maximal size of possible extension queue 814. Compared 174313 event pairs, 6194 based on Foata normal form. 1024/22327 useless extension candidates. Maximal degree in co-relation 71633. Up to 8983 conditions per place. [2024-11-13 13:13:10,614 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 125 selfloop transitions, 21 changer transitions 0/167 dead transitions. [2024-11-13 13:13:10,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 167 transitions, 1490 flow [2024-11-13 13:13:10,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:13:10,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:13:10,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-11-13 13:13:10,615 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7569444444444444 [2024-11-13 13:13:10,615 INFO L175 Difference]: Start difference. First operand has 77 places, 83 transitions, 589 flow. Second operand 4 states and 109 transitions. [2024-11-13 13:13:10,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 167 transitions, 1490 flow [2024-11-13 13:13:10,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 167 transitions, 1446 flow, removed 22 selfloop flow, removed 0 redundant places. [2024-11-13 13:13:10,723 INFO L231 Difference]: Finished difference. Result has 82 places, 99 transitions, 819 flow [2024-11-13 13:13:10,723 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=819, PETRI_PLACES=82, PETRI_TRANSITIONS=99} [2024-11-13 13:13:10,724 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 44 predicate places. [2024-11-13 13:13:10,724 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 99 transitions, 819 flow [2024-11-13 13:13:10,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:10,724 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:10,724 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:10,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 13:13:10,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-13 13:13:10,925 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:13:10,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:10,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1935866782, now seen corresponding path program 6 times [2024-11-13 13:13:10,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:10,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78917591] [2024-11-13 13:13:10,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:10,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:11,253 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:13:11,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:11,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78917591] [2024-11-13 13:13:11,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78917591] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:11,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469270719] [2024-11-13 13:13:11,254 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 13:13:11,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:11,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:11,256 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:11,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:13:11,352 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-13 13:13:11,352 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:13:11,354 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 13:13:11,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:11,543 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:13:11,543 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:11,869 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:13:11,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469270719] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:13:11,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:13:11,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 8] total 15 [2024-11-13 13:13:11,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545574410] [2024-11-13 13:13:11,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:13:11,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 13:13:11,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:11,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 13:13:11,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-13 13:13:12,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-13 13:13:12,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 99 transitions, 819 flow. Second operand has 16 states, 16 states have (on average 12.3125) internal successors, (197), 16 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:12,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:12,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-13 13:13:12,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:18,705 INFO L124 PetriNetUnfolderBase]: 43127/65083 cut-off events. [2024-11-13 13:13:18,705 INFO L125 PetriNetUnfolderBase]: For 147443/147822 co-relation queries the response was YES. [2024-11-13 13:13:18,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205838 conditions, 65083 events. 43127/65083 cut-off events. For 147443/147822 co-relation queries the response was YES. Maximal size of possible extension queue 2099. Compared 471247 event pairs, 6714 based on Foata normal form. 2161/58739 useless extension candidates. Maximal degree in co-relation 199418. Up to 15250 conditions per place. [2024-11-13 13:13:18,932 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 179 selfloop transitions, 115 changer transitions 107/409 dead transitions. [2024-11-13 13:13:18,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 409 transitions, 3739 flow [2024-11-13 13:13:18,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 13:13:18,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-13 13:13:18,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 345 transitions. [2024-11-13 13:13:18,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-11-13 13:13:18,936 INFO L175 Difference]: Start difference. First operand has 82 places, 99 transitions, 819 flow. Second operand 15 states and 345 transitions. [2024-11-13 13:13:18,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 409 transitions, 3739 flow [2024-11-13 13:13:19,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 409 transitions, 3617 flow, removed 61 selfloop flow, removed 0 redundant places. [2024-11-13 13:13:19,869 INFO L231 Difference]: Finished difference. Result has 106 places, 173 transitions, 2097 flow [2024-11-13 13:13:19,870 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2097, PETRI_PLACES=106, PETRI_TRANSITIONS=173} [2024-11-13 13:13:19,870 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 68 predicate places. [2024-11-13 13:13:19,871 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 173 transitions, 2097 flow [2024-11-13 13:13:19,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.3125) internal successors, (197), 16 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:19,871 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:19,871 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:19,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 13:13:20,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 13:13:20,076 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:13:20,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:20,076 INFO L85 PathProgramCache]: Analyzing trace with hash -600536588, now seen corresponding path program 7 times [2024-11-13 13:13:20,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:20,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079466504] [2024-11-13 13:13:20,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:20,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:20,206 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 13:13:20,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:20,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079466504] [2024-11-13 13:13:20,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079466504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:20,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297784765] [2024-11-13 13:13:20,207 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 13:13:20,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:20,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:20,209 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:20,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 13:13:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:20,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 13:13:20,295 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:20,359 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:13:20,359 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:20,419 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 13:13:20,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297784765] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:13:20,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:13:20,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 5 [2024-11-13 13:13:20,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129025000] [2024-11-13 13:13:20,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:13:20,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:13:20,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:20,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:13:20,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:13:20,421 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-13 13:13:20,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 173 transitions, 2097 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:20,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:20,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-13 13:13:20,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:26,630 INFO L124 PetriNetUnfolderBase]: 30678/48741 cut-off events. [2024-11-13 13:13:26,630 INFO L125 PetriNetUnfolderBase]: For 270118/271658 co-relation queries the response was YES. [2024-11-13 13:13:26,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202196 conditions, 48741 events. 30678/48741 cut-off events. For 270118/271658 co-relation queries the response was YES. Maximal size of possible extension queue 1085. Compared 358692 event pairs, 11293 based on Foata normal form. 1216/42964 useless extension candidates. Maximal degree in co-relation 199353. Up to 14568 conditions per place. [2024-11-13 13:13:27,027 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 328 selfloop transitions, 56 changer transitions 2/413 dead transitions. [2024-11-13 13:13:27,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 413 transitions, 5713 flow [2024-11-13 13:13:27,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:13:27,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 13:13:27,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-11-13 13:13:27,029 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8111111111111111 [2024-11-13 13:13:27,029 INFO L175 Difference]: Start difference. First operand has 106 places, 173 transitions, 2097 flow. Second operand 5 states and 146 transitions. [2024-11-13 13:13:27,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 413 transitions, 5713 flow [2024-11-13 13:13:28,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 413 transitions, 5511 flow, removed 86 selfloop flow, removed 6 redundant places. [2024-11-13 13:13:28,897 INFO L231 Difference]: Finished difference. Result has 105 places, 202 transitions, 2546 flow [2024-11-13 13:13:28,898 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1995, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2546, PETRI_PLACES=105, PETRI_TRANSITIONS=202} [2024-11-13 13:13:28,898 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 67 predicate places. [2024-11-13 13:13:28,899 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 202 transitions, 2546 flow [2024-11-13 13:13:28,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:28,899 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:28,899 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:28,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 13:13:29,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 13:13:29,102 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:13:29,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:29,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1128103740, now seen corresponding path program 2 times [2024-11-13 13:13:29,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:29,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497729590] [2024-11-13 13:13:29,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:29,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:29,234 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 13:13:29,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:29,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497729590] [2024-11-13 13:13:29,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497729590] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:29,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129763846] [2024-11-13 13:13:29,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:13:29,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:29,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:29,237 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:29,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 13:13:29,326 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:13:29,326 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:13:29,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 13:13:29,329 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:29,386 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:13:29,387 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:29,458 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 13:13:29,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129763846] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:13:29,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:13:29,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 5 [2024-11-13 13:13:29,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087511397] [2024-11-13 13:13:29,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:13:29,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:13:29,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:29,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:13:29,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:13:29,461 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-13 13:13:29,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 202 transitions, 2546 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:29,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:29,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-13 13:13:29,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:41,416 INFO L124 PetriNetUnfolderBase]: 60101/95442 cut-off events. [2024-11-13 13:13:41,416 INFO L125 PetriNetUnfolderBase]: For 596984/600881 co-relation queries the response was YES. [2024-11-13 13:13:41,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398664 conditions, 95442 events. 60101/95442 cut-off events. For 596984/600881 co-relation queries the response was YES. Maximal size of possible extension queue 2215. Compared 773987 event pairs, 21018 based on Foata normal form. 2706/84685 useless extension candidates. Maximal degree in co-relation 395914. Up to 26023 conditions per place. [2024-11-13 13:13:42,016 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 346 selfloop transitions, 106 changer transitions 0/479 dead transitions. [2024-11-13 13:13:42,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 479 transitions, 7028 flow [2024-11-13 13:13:42,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:13:42,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 13:13:42,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2024-11-13 13:13:42,018 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2024-11-13 13:13:42,018 INFO L175 Difference]: Start difference. First operand has 105 places, 202 transitions, 2546 flow. Second operand 5 states and 140 transitions. [2024-11-13 13:13:42,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 479 transitions, 7028 flow [2024-11-13 13:13:44,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 479 transitions, 6498 flow, removed 237 selfloop flow, removed 1 redundant places. [2024-11-13 13:13:44,069 INFO L231 Difference]: Finished difference. Result has 111 places, 260 transitions, 3697 flow [2024-11-13 13:13:44,069 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2391, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3697, PETRI_PLACES=111, PETRI_TRANSITIONS=260} [2024-11-13 13:13:44,070 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 73 predicate places. [2024-11-13 13:13:44,070 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 260 transitions, 3697 flow [2024-11-13 13:13:44,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:44,070 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:44,071 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 2, 2, 2, 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] [2024-11-13 13:13:44,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 13:13:44,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:44,271 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:13:44,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:44,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1910745048, now seen corresponding path program 1 times [2024-11-13 13:13:44,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:44,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383551883] [2024-11-13 13:13:44,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:44,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:44,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:44,560 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:13:44,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:44,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383551883] [2024-11-13 13:13:44,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383551883] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:44,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439653804] [2024-11-13 13:13:44,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:44,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:44,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:44,563 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:44,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006d93c8-77b8-4171-959d-85e5e0c9494b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 13:13:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:44,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 13:13:44,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:44,795 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:13:44,796 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:44,992 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:13:44,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439653804] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:13:44,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:13:44,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 9] total 16 [2024-11-13 13:13:44,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115191751] [2024-11-13 13:13:44,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:13:44,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 13:13:44,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:44,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 13:13:44,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2024-11-13 13:13:45,063 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-13 13:13:45,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 260 transitions, 3697 flow. Second operand has 17 states, 17 states have (on average 12.294117647058824) internal successors, (209), 17 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:45,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:45,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-13 13:13:45,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand