./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0ead2366baa94ec77674f75cd829f45857f5651e204e91d33a749a2af2868461 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 12:41:50,056 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:41:50,114 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-12-02 12:41:50,118 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:41:50,118 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:41:50,142 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:41:50,143 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:41:50,143 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:41:50,143 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:41:50,143 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:41:50,143 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:41:50,143 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:41:50,144 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:41:50,144 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:41:50,144 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:41:50,144 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:41:50,144 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 12:41:50,144 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 12:41:50,145 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:41:50,145 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 12:41:50,145 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:41:50,145 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 12:41:50,145 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:41:50,145 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 12:41:50,145 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-02 12:41:50,145 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 12:41:50,145 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 12:41:50,145 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 12:41:50,146 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:41:50,146 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:41:50,146 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:41:50,146 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:41:50,146 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:41:50,146 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:41:50,146 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:41:50,146 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:41:50,146 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:41:50,147 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:41:50,147 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:41:50,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:41:50,147 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:41:50,147 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:41:50,147 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 12:41:50,147 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 12:41:50,147 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 12:41:50,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 12:41:50,147 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:41:50,148 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:41:50,148 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:41:50,148 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:41:50,148 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_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1 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 ! overflow) ) 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 -> 0ead2366baa94ec77674f75cd829f45857f5651e204e91d33a749a2af2868461 [2024-12-02 12:41:50,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:41:50,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:41:50,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:41:50,392 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:41:50,392 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:41:50,393 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2024-12-02 12:41:53,050 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/data/f2bf9567b/b2a2a866694f475896160bb52cbcca85/FLAG6056029d9 [2024-12-02 12:41:53,237 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:41:53,238 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2024-12-02 12:41:53,244 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/data/f2bf9567b/b2a2a866694f475896160bb52cbcca85/FLAG6056029d9 [2024-12-02 12:41:53,612 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/data/f2bf9567b/b2a2a866694f475896160bb52cbcca85 [2024-12-02 12:41:53,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:41:53,615 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:41:53,616 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:41:53,616 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:41:53,619 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:41:53,620 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:41:53" (1/1) ... [2024-12-02 12:41:53,621 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a08a9ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:53, skipping insertion in model container [2024-12-02 12:41:53,621 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:41:53" (1/1) ... [2024-12-02 12:41:53,632 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:41:53,757 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:41:53,763 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:41:53,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:41:53,792 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:41:53,793 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:53 WrapperNode [2024-12-02 12:41:53,793 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:41:53,794 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:41:53,794 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:41:53,794 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:41:53,799 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:53" (1/1) ... [2024-12-02 12:41:53,804 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:53" (1/1) ... [2024-12-02 12:41:53,817 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 50 [2024-12-02 12:41:53,818 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:41:53,818 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:41:53,818 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:41:53,819 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:41:53,826 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:53" (1/1) ... [2024-12-02 12:41:53,826 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:53" (1/1) ... [2024-12-02 12:41:53,828 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:53" (1/1) ... [2024-12-02 12:41:53,840 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]. [2024-12-02 12:41:53,840 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:53" (1/1) ... [2024-12-02 12:41:53,840 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:53" (1/1) ... [2024-12-02 12:41:53,844 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:53" (1/1) ... [2024-12-02 12:41:53,845 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:53" (1/1) ... [2024-12-02 12:41:53,847 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:53" (1/1) ... [2024-12-02 12:41:53,848 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:53" (1/1) ... [2024-12-02 12:41:53,850 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:53" (1/1) ... [2024-12-02 12:41:53,852 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:41:53,852 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:41:53,853 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:41:53,853 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:41:53,854 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:53" (1/1) ... [2024-12-02 12:41:53,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:41:53,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:41:53,884 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:41:53,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:41:53,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 12:41:53,910 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-12-02 12:41:53,910 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-12-02 12:41:53,910 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-12-02 12:41:53,910 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-12-02 12:41:53,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 12:41:53,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-12-02 12:41:53,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-12-02 12:41:53,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:41:53,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:41:53,911 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 12:41:53,985 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:41:53,987 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:41:54,180 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 12:41:54,180 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:41:54,328 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:41:54,329 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 12:41:54,329 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:41:54 BoogieIcfgContainer [2024-12-02 12:41:54,329 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:41:54,331 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:41:54,331 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:41:54,336 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:41:54,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:41:53" (1/3) ... [2024-12-02 12:41:54,337 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1796d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:41:54, skipping insertion in model container [2024-12-02 12:41:54,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:41:53" (2/3) ... [2024-12-02 12:41:54,337 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1796d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:41:54, skipping insertion in model container [2024-12-02 12:41:54,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:41:54" (3/3) ... [2024-12-02 12:41:54,339 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2024-12-02 12:41:54,354 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:41:54,356 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-nonblocking-cntr-alt.wvr.c that has 3 procedures, 31 locations, 1 initial locations, 2 loop locations, and 10 error locations. [2024-12-02 12:41:54,356 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 12:41:54,408 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-12-02 12:41:54,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 78 flow [2024-12-02 12:41:54,470 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2024-12-02 12:41:54,472 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-12-02 12:41:54,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 2/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 66 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-12-02 12:41:54,476 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 78 flow [2024-12-02 12:41:54,478 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 29 transitions, 70 flow [2024-12-02 12:41:54,486 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:41:54,498 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;@165093df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:41:54,498 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-12-02 12:41:54,504 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 12:41:54,504 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-12-02 12:41:54,504 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-02 12:41:54,504 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:41:54,505 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 12:41:54,505 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 12:41:54,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:41:54,511 INFO L85 PathProgramCache]: Analyzing trace with hash 280359154, now seen corresponding path program 1 times [2024-12-02 12:41:54,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:41:54,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292512247] [2024-12-02 12:41:54,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:41:54,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:41:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:41:54,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:41:54,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:41:54,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292512247] [2024-12-02 12:41:54,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292512247] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:41:54,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:41:54,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 12:41:54,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845571968] [2024-12-02 12:41:54,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:41:54,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:41:54,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:41:54,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:41:54,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:41:54,740 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-12-02 12:41:54,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:41:54,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:41:54,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-12-02 12:41:54,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:41:54,899 INFO L124 PetriNetUnfolderBase]: 143/299 cut-off events. [2024-12-02 12:41:54,899 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-12-02 12:41:54,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 299 events. 143/299 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1253 event pairs, 49 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 514. Up to 192 conditions per place. [2024-12-02 12:41:54,904 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 27 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2024-12-02 12:41:54,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 155 flow [2024-12-02 12:41:54,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:41:54,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 12:41:54,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-12-02 12:41:54,915 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-12-02 12:41:54,916 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 70 flow. Second operand 3 states and 69 transitions. [2024-12-02 12:41:54,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 155 flow [2024-12-02 12:41:54,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 38 transitions, 141 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-12-02 12:41:54,923 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 80 flow [2024-12-02 12:41:54,925 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=32, PETRI_TRANSITIONS=29} [2024-12-02 12:41:54,929 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2024-12-02 12:41:54,929 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 80 flow [2024-12-02 12:41:54,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:41:54,929 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:41:54,929 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:41:54,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 12:41:54,930 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 12:41:54,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:41:54,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1157782027, now seen corresponding path program 1 times [2024-12-02 12:41:54,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:41:54,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669416148] [2024-12-02 12:41:54,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:41:54,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:41:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:41:55,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:41:55,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:41:55,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669416148] [2024-12-02 12:41:55,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669416148] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:41:55,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:41:55,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:41:55,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191965066] [2024-12-02 12:41:55,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:41:55,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:41:55,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:41:55,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:41:55,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:41:55,027 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-12-02 12:41:55,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:41:55,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:41:55,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-12-02 12:41:55,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:41:55,209 INFO L124 PetriNetUnfolderBase]: 243/471 cut-off events. [2024-12-02 12:41:55,209 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-12-02 12:41:55,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1030 conditions, 471 events. 243/471 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2252 event pairs, 111 based on Foata normal form. 14/388 useless extension candidates. Maximal degree in co-relation 528. Up to 339 conditions per place. [2024-12-02 12:41:55,213 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 40 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2024-12-02 12:41:55,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 50 transitions, 224 flow [2024-12-02 12:41:55,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:41:55,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:41:55,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-12-02 12:41:55,215 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-12-02 12:41:55,215 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 80 flow. Second operand 4 states and 78 transitions. [2024-12-02 12:41:55,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 50 transitions, 224 flow [2024-12-02 12:41:55,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 50 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 12:41:55,217 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 107 flow [2024-12-02 12:41:55,217 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=107, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2024-12-02 12:41:55,218 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2024-12-02 12:41:55,218 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 107 flow [2024-12-02 12:41:55,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:41:55,218 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:41:55,218 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:41:55,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 12:41:55,219 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 12:41:55,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:41:55,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1553378187, now seen corresponding path program 1 times [2024-12-02 12:41:55,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:41:55,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794842514] [2024-12-02 12:41:55,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:41:55,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:41:55,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:41:55,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:41:55,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:41:55,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794842514] [2024-12-02 12:41:55,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794842514] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:41:55,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:41:55,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:41:55,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728202464] [2024-12-02 12:41:55,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:41:55,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:41:55,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:41:55,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:41:55,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:41:55,284 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-12-02 12:41:55,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:41:55,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:41:55,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-12-02 12:41:55,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:41:55,394 INFO L124 PetriNetUnfolderBase]: 240/463 cut-off events. [2024-12-02 12:41:55,394 INFO L125 PetriNetUnfolderBase]: For 164/213 co-relation queries the response was YES. [2024-12-02 12:41:55,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1140 conditions, 463 events. 240/463 cut-off events. For 164/213 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2305 event pairs, 129 based on Foata normal form. 17/391 useless extension candidates. Maximal degree in co-relation 708. Up to 284 conditions per place. [2024-12-02 12:41:55,398 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 35 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2024-12-02 12:41:55,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 236 flow [2024-12-02 12:41:55,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:41:55,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 12:41:55,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2024-12-02 12:41:55,399 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-12-02 12:41:55,399 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 107 flow. Second operand 3 states and 66 transitions. [2024-12-02 12:41:55,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 236 flow [2024-12-02 12:41:55,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 12:41:55,401 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 118 flow [2024-12-02 12:41:55,401 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2024-12-02 12:41:55,402 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2024-12-02 12:41:55,402 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 118 flow [2024-12-02 12:41:55,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:41:55,402 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:41:55,402 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:41:55,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 12:41:55,402 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 12:41:55,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:41:55,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1384797383, now seen corresponding path program 1 times [2024-12-02 12:41:55,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:41:55,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055431054] [2024-12-02 12:41:55,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:41:55,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:41:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:41:55,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:41:55,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:41:55,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055431054] [2024-12-02 12:41:55,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055431054] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:41:55,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:41:55,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:41:55,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148827109] [2024-12-02 12:41:55,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:41:55,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:41:55,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:41:55,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:41:55,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:41:55,471 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-12-02 12:41:55,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 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) [2024-12-02 12:41:55,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:41:55,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-12-02 12:41:55,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:41:55,615 INFO L124 PetriNetUnfolderBase]: 303/680 cut-off events. [2024-12-02 12:41:55,615 INFO L125 PetriNetUnfolderBase]: For 311/315 co-relation queries the response was YES. [2024-12-02 12:41:55,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1707 conditions, 680 events. 303/680 cut-off events. For 311/315 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3589 event pairs, 74 based on Foata normal form. 22/613 useless extension candidates. Maximal degree in co-relation 565. Up to 233 conditions per place. [2024-12-02 12:41:55,620 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 43 selfloop transitions, 7 changer transitions 0/60 dead transitions. [2024-12-02 12:41:55,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 60 transitions, 316 flow [2024-12-02 12:41:55,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:41:55,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:41:55,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-12-02 12:41:55,622 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-12-02 12:41:55,622 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 118 flow. Second operand 4 states and 92 transitions. [2024-12-02 12:41:55,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 60 transitions, 316 flow [2024-12-02 12:41:55,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 60 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 12:41:55,625 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 184 flow [2024-12-02 12:41:55,625 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-12-02 12:41:55,626 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2024-12-02 12:41:55,626 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 184 flow [2024-12-02 12:41:55,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 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) [2024-12-02 12:41:55,626 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:41:55,626 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:41:55,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 12:41:55,626 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 12:41:55,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:41:55,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1398291392, now seen corresponding path program 1 times [2024-12-02 12:41:55,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:41:55,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458920437] [2024-12-02 12:41:55,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:41:55,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:41:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:41:55,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:41:55,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:41:55,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458920437] [2024-12-02 12:41:55,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458920437] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:41:55,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983899805] [2024-12-02 12:41:55,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:41:55,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:41:55,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:41:55,678 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:41:55,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 12:41:55,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:41:55,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 12:41:55,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:41:55,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:41:55,784 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:41:55,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983899805] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:41:55,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:41:55,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-12-02 12:41:55,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391793336] [2024-12-02 12:41:55,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:41:55,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:41:55,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:41:55,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:41:55,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:41:55,786 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-12-02 12:41:55,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:41:55,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:41:55,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-12-02 12:41:55,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:41:55,916 INFO L124 PetriNetUnfolderBase]: 359/804 cut-off events. [2024-12-02 12:41:55,916 INFO L125 PetriNetUnfolderBase]: For 1105/1115 co-relation queries the response was YES. [2024-12-02 12:41:55,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2263 conditions, 804 events. 359/804 cut-off events. For 1105/1115 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4281 event pairs, 82 based on Foata normal form. 56/813 useless extension candidates. Maximal degree in co-relation 978. Up to 330 conditions per place. [2024-12-02 12:41:55,920 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 33 selfloop transitions, 13 changer transitions 0/56 dead transitions. [2024-12-02 12:41:55,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 363 flow [2024-12-02 12:41:55,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:41:55,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:41:55,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-12-02 12:41:55,921 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6171875 [2024-12-02 12:41:55,921 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 184 flow. Second operand 4 states and 79 transitions. [2024-12-02 12:41:55,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 363 flow [2024-12-02 12:41:55,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 348 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-12-02 12:41:55,926 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 296 flow [2024-12-02 12:41:55,926 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=296, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2024-12-02 12:41:55,927 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2024-12-02 12:41:55,927 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 296 flow [2024-12-02 12:41:55,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:41:55,927 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:41:55,927 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:41:55,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 12:41:56,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:41:56,128 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 12:41:56,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:41:56,129 INFO L85 PathProgramCache]: Analyzing trace with hash 425493661, now seen corresponding path program 1 times [2024-12-02 12:41:56,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:41:56,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129343892] [2024-12-02 12:41:56,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:41:56,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:41:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:41:56,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:41:56,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:41:56,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129343892] [2024-12-02 12:41:56,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129343892] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:41:56,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400128605] [2024-12-02 12:41:56,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:41:56,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:41:56,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:41:56,179 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:41:56,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 12:41:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:41:56,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 12:41:56,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:41:56,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:41:56,261 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:41:56,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:41:56,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400128605] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:41:56,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:41:56,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-12-02 12:41:56,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020437770] [2024-12-02 12:41:56,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:41:56,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:41:56,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:41:56,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:41:56,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:41:56,301 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-12-02 12:41:56,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:41:56,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:41:56,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-12-02 12:41:56,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:41:56,414 INFO L124 PetriNetUnfolderBase]: 402/759 cut-off events. [2024-12-02 12:41:56,414 INFO L125 PetriNetUnfolderBase]: For 1390/1433 co-relation queries the response was YES. [2024-12-02 12:41:56,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2453 conditions, 759 events. 402/759 cut-off events. For 1390/1433 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3655 event pairs, 107 based on Foata normal form. 15/692 useless extension candidates. Maximal degree in co-relation 968. Up to 397 conditions per place. [2024-12-02 12:41:56,418 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 43 selfloop transitions, 7 changer transitions 0/59 dead transitions. [2024-12-02 12:41:56,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 59 transitions, 452 flow [2024-12-02 12:41:56,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:41:56,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:41:56,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-12-02 12:41:56,419 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5390625 [2024-12-02 12:41:56,419 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 296 flow. Second operand 4 states and 69 transitions. [2024-12-02 12:41:56,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 59 transitions, 452 flow [2024-12-02 12:41:56,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 59 transitions, 435 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-12-02 12:41:56,424 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 266 flow [2024-12-02 12:41:56,425 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=266, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2024-12-02 12:41:56,425 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2024-12-02 12:41:56,425 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 266 flow [2024-12-02 12:41:56,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:41:56,426 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:41:56,426 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:41:56,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 12:41:56,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-12-02 12:41:56,626 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 12:41:56,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:41:56,627 INFO L85 PathProgramCache]: Analyzing trace with hash -649564914, now seen corresponding path program 1 times [2024-12-02 12:41:56,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:41:56,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697750845] [2024-12-02 12:41:56,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:41:56,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:41:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:41:56,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:41:56,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:41:56,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697750845] [2024-12-02 12:41:56,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697750845] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:41:56,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632615308] [2024-12-02 12:41:56,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:41:56,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:41:56,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:41:56,702 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:41:56,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 12:41:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:41:56,751 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 12:41:56,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:41:56,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:41:56,804 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:41:56,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:41:56,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632615308] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:41:56,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:41:56,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-12-02 12:41:56,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880062745] [2024-12-02 12:41:56,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:41:56,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 12:41:56,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:41:56,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 12:41:56,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:41:56,868 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-12-02 12:41:56,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 266 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:41:56,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:41:56,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-12-02 12:41:56,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:41:57,046 INFO L124 PetriNetUnfolderBase]: 267/586 cut-off events. [2024-12-02 12:41:57,046 INFO L125 PetriNetUnfolderBase]: For 1409/1427 co-relation queries the response was YES. [2024-12-02 12:41:57,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1845 conditions, 586 events. 267/586 cut-off events. For 1409/1427 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2881 event pairs, 11 based on Foata normal form. 38/613 useless extension candidates. Maximal degree in co-relation 608. Up to 217 conditions per place. [2024-12-02 12:41:57,048 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 44 selfloop transitions, 11 changer transitions 0/66 dead transitions. [2024-12-02 12:41:57,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 66 transitions, 436 flow [2024-12-02 12:41:57,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 12:41:57,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 12:41:57,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-12-02 12:41:57,050 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-12-02 12:41:57,050 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 266 flow. Second operand 7 states and 126 transitions. [2024-12-02 12:41:57,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 66 transitions, 436 flow [2024-12-02 12:41:57,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 66 transitions, 419 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-12-02 12:41:57,054 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 237 flow [2024-12-02 12:41:57,054 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=237, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-12-02 12:41:57,054 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 15 predicate places. [2024-12-02 12:41:57,055 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 237 flow [2024-12-02 12:41:57,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:41:57,055 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:41:57,055 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:41:57,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 12:41:57,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-12-02 12:41:57,256 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 12:41:57,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:41:57,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1310714370, now seen corresponding path program 1 times [2024-12-02 12:41:57,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:41:57,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078549521] [2024-12-02 12:41:57,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:41:57,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:41:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:41:57,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:41:57,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:41:57,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078549521] [2024-12-02 12:41:57,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078549521] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:41:57,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:41:57,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:41:57,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404476628] [2024-12-02 12:41:57,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:41:57,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:41:57,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:41:57,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:41:57,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:41:57,318 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-12-02 12:41:57,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 237 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:41:57,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:41:57,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-12-02 12:41:57,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:41:57,411 INFO L124 PetriNetUnfolderBase]: 245/499 cut-off events. [2024-12-02 12:41:57,411 INFO L125 PetriNetUnfolderBase]: For 1313/1341 co-relation queries the response was YES. [2024-12-02 12:41:57,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1663 conditions, 499 events. 245/499 cut-off events. For 1313/1341 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2271 event pairs, 117 based on Foata normal form. 18/494 useless extension candidates. Maximal degree in co-relation 858. Up to 356 conditions per place. [2024-12-02 12:41:57,414 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 35 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2024-12-02 12:41:57,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 49 transitions, 374 flow [2024-12-02 12:41:57,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:41:57,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:41:57,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-12-02 12:41:57,416 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5390625 [2024-12-02 12:41:57,416 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 237 flow. Second operand 4 states and 69 transitions. [2024-12-02 12:41:57,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 49 transitions, 374 flow [2024-12-02 12:41:57,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 340 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-12-02 12:41:57,420 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 209 flow [2024-12-02 12:41:57,420 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2024-12-02 12:41:57,420 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 13 predicate places. [2024-12-02 12:41:57,420 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 209 flow [2024-12-02 12:41:57,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:41:57,421 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:41:57,421 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-12-02 12:41:57,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 12:41:57,421 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 12:41:57,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:41:57,421 INFO L85 PathProgramCache]: Analyzing trace with hash -566725309, now seen corresponding path program 1 times [2024-12-02 12:41:57,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:41:57,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083090502] [2024-12-02 12:41:57,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:41:57,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:41:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:41:57,476 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:41:57,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:41:57,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083090502] [2024-12-02 12:41:57,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083090502] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:41:57,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615466184] [2024-12-02 12:41:57,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:41:57,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:41:57,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:41:57,478 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:41:57,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 12:41:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:41:57,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 12:41:57,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:41:57,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:41:57,557 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:41:57,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615466184] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:41:57,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:41:57,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-12-02 12:41:57,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168791816] [2024-12-02 12:41:57,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:41:57,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:41:57,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:41:57,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:41:57,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:41:57,574 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-12-02 12:41:57,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 209 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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) [2024-12-02 12:41:57,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:41:57,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-12-02 12:41:57,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:41:57,767 INFO L124 PetriNetUnfolderBase]: 330/667 cut-off events. [2024-12-02 12:41:57,767 INFO L125 PetriNetUnfolderBase]: For 1193/1212 co-relation queries the response was YES. [2024-12-02 12:41:57,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2064 conditions, 667 events. 330/667 cut-off events. For 1193/1212 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3150 event pairs, 42 based on Foata normal form. 20/659 useless extension candidates. Maximal degree in co-relation 777. Up to 208 conditions per place. [2024-12-02 12:41:57,771 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 63 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2024-12-02 12:41:57,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 76 transitions, 567 flow [2024-12-02 12:41:57,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:41:57,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 12:41:57,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-12-02 12:41:57,773 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-12-02 12:41:57,773 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 209 flow. Second operand 6 states and 96 transitions. [2024-12-02 12:41:57,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 76 transitions, 567 flow [2024-12-02 12:41:57,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 76 transitions, 561 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 12:41:57,776 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 211 flow [2024-12-02 12:41:57,777 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=211, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2024-12-02 12:41:57,777 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2024-12-02 12:41:57,777 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 211 flow [2024-12-02 12:41:57,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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) [2024-12-02 12:41:57,777 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:41:57,778 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-12-02 12:41:57,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 12:41:57,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-12-02 12:41:57,978 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 12:41:57,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:41:57,979 INFO L85 PathProgramCache]: Analyzing trace with hash -388615089, now seen corresponding path program 1 times [2024-12-02 12:41:57,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:41:57,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048068718] [2024-12-02 12:41:57,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:41:57,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:41:57,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:41:58,034 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:41:58,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:41:58,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048068718] [2024-12-02 12:41:58,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048068718] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:41:58,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625521292] [2024-12-02 12:41:58,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:41:58,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:41:58,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:41:58,036 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:41:58,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 12:41:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:41:58,079 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 12:41:58,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:41:58,110 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:41:58,110 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:41:58,156 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:41:58,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625521292] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:41:58,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:41:58,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-12-02 12:41:58,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812262299] [2024-12-02 12:41:58,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:41:58,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 12:41:58,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:41:58,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 12:41:58,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-12-02 12:41:58,178 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-12-02 12:41:58,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 211 flow. Second operand has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:41:58,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:41:58,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-12-02 12:41:58,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:41:58,492 INFO L124 PetriNetUnfolderBase]: 680/1320 cut-off events. [2024-12-02 12:41:58,492 INFO L125 PetriNetUnfolderBase]: For 2792/2831 co-relation queries the response was YES. [2024-12-02 12:41:58,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4292 conditions, 1320 events. 680/1320 cut-off events. For 2792/2831 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6587 event pairs, 111 based on Foata normal form. 60/1370 useless extension candidates. Maximal degree in co-relation 1672. Up to 464 conditions per place. [2024-12-02 12:41:58,501 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 114 selfloop transitions, 12 changer transitions 0/133 dead transitions. [2024-12-02 12:41:58,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 133 transitions, 1033 flow [2024-12-02 12:41:58,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:41:58,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 12:41:58,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-12-02 12:41:58,502 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-12-02 12:41:58,502 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 211 flow. Second operand 10 states and 172 transitions. [2024-12-02 12:41:58,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 133 transitions, 1033 flow [2024-12-02 12:41:58,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 133 transitions, 1006 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-12-02 12:41:58,507 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 280 flow [2024-12-02 12:41:58,507 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=280, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2024-12-02 12:41:58,508 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 22 predicate places. [2024-12-02 12:41:58,508 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 280 flow [2024-12-02 12:41:58,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:41:58,508 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:41:58,508 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:41:58,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-12-02 12:41:58,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 12:41:58,709 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 12:41:58,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:41:58,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1185843675, now seen corresponding path program 1 times [2024-12-02 12:41:58,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:41:58,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910066355] [2024-12-02 12:41:58,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:41:58,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:41:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:41:58,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:41:58,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:41:58,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910066355] [2024-12-02 12:41:58,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910066355] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:41:58,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193457333] [2024-12-02 12:41:58,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:41:58,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:41:58,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:41:58,762 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:41:58,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 12:41:58,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:41:58,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 12:41:58,809 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:41:58,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:41:58,836 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:41:58,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:41:58,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193457333] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:41:58,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:41:58,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-12-02 12:41:58,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690731090] [2024-12-02 12:41:58,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:41:58,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 12:41:58,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:41:58,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 12:41:58,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:41:58,879 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-12-02 12:41:58,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 280 flow. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:41:58,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:41:58,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-12-02 12:41:58,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:41:59,146 INFO L124 PetriNetUnfolderBase]: 591/1347 cut-off events. [2024-12-02 12:41:59,146 INFO L125 PetriNetUnfolderBase]: For 3688/3730 co-relation queries the response was YES. [2024-12-02 12:41:59,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4362 conditions, 1347 events. 591/1347 cut-off events. For 3688/3730 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 7522 event pairs, 49 based on Foata normal form. 212/1529 useless extension candidates. Maximal degree in co-relation 2790. Up to 253 conditions per place. [2024-12-02 12:41:59,157 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 80 selfloop transitions, 18 changer transitions 0/111 dead transitions. [2024-12-02 12:41:59,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 111 transitions, 830 flow [2024-12-02 12:41:59,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 12:41:59,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-12-02 12:41:59,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-12-02 12:41:59,159 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-12-02 12:41:59,159 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 280 flow. Second operand 8 states and 160 transitions. [2024-12-02 12:41:59,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 111 transitions, 830 flow [2024-12-02 12:41:59,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 111 transitions, 801 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-12-02 12:41:59,167 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 423 flow [2024-12-02 12:41:59,168 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=423, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2024-12-02 12:41:59,168 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2024-12-02 12:41:59,168 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 423 flow [2024-12-02 12:41:59,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:41:59,169 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:41:59,169 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:41:59,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 12:41:59,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-12-02 12:41:59,369 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 12:41:59,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:41:59,370 INFO L85 PathProgramCache]: Analyzing trace with hash 2127893162, now seen corresponding path program 1 times [2024-12-02 12:41:59,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:41:59,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548229409] [2024-12-02 12:41:59,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:41:59,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:41:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:41:59,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:41:59,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:41:59,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548229409] [2024-12-02 12:41:59,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548229409] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:41:59,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:41:59,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:41:59,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192508288] [2024-12-02 12:41:59,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:41:59,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:41:59,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:41:59,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:41:59,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:41:59,439 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-12-02 12:41:59,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 423 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) [2024-12-02 12:41:59,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:41:59,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-12-02 12:41:59,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:41:59,640 INFO L124 PetriNetUnfolderBase]: 539/1196 cut-off events. [2024-12-02 12:41:59,640 INFO L125 PetriNetUnfolderBase]: For 3784/3808 co-relation queries the response was YES. [2024-12-02 12:41:59,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4346 conditions, 1196 events. 539/1196 cut-off events. For 3784/3808 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6500 event pairs, 290 based on Foata normal form. 36/1205 useless extension candidates. Maximal degree in co-relation 3255. Up to 815 conditions per place. [2024-12-02 12:41:59,651 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 53 selfloop transitions, 8 changer transitions 0/74 dead transitions. [2024-12-02 12:41:59,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 74 transitions, 670 flow [2024-12-02 12:41:59,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:41:59,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:41:59,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-12-02 12:41:59,653 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-12-02 12:41:59,653 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 423 flow. Second operand 4 states and 68 transitions. [2024-12-02 12:41:59,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 74 transitions, 670 flow [2024-12-02 12:41:59,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 74 transitions, 647 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-12-02 12:41:59,663 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 434 flow [2024-12-02 12:41:59,663 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=434, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2024-12-02 12:41:59,663 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 31 predicate places. [2024-12-02 12:41:59,663 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 434 flow [2024-12-02 12:41:59,664 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) [2024-12-02 12:41:59,664 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:41:59,664 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:41:59,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 12:41:59,664 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 12:41:59,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:41:59,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1011125216, now seen corresponding path program 1 times [2024-12-02 12:41:59,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:41:59,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839358615] [2024-12-02 12:41:59,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:41:59,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:41:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:41:59,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 12:41:59,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:41:59,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839358615] [2024-12-02 12:41:59,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839358615] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:41:59,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:41:59,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 12:41:59,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496397640] [2024-12-02 12:41:59,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:41:59,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:41:59,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:41:59,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:41:59,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:41:59,726 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-12-02 12:41:59,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 434 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:41:59,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:41:59,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-12-02 12:41:59,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:41:59,891 INFO L124 PetriNetUnfolderBase]: 539/1159 cut-off events. [2024-12-02 12:41:59,892 INFO L125 PetriNetUnfolderBase]: For 4208/4244 co-relation queries the response was YES. [2024-12-02 12:41:59,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4464 conditions, 1159 events. 539/1159 cut-off events. For 4208/4244 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6111 event pairs, 338 based on Foata normal form. 9/1146 useless extension candidates. Maximal degree in co-relation 3363. Up to 912 conditions per place. [2024-12-02 12:41:59,902 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 43 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2024-12-02 12:41:59,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 55 transitions, 520 flow [2024-12-02 12:41:59,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:41:59,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 12:41:59,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2024-12-02 12:41:59,903 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-12-02 12:41:59,903 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 434 flow. Second operand 3 states and 44 transitions. [2024-12-02 12:41:59,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 55 transitions, 520 flow [2024-12-02 12:41:59,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 55 transitions, 504 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 12:41:59,911 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 418 flow [2024-12-02 12:41:59,911 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=418, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2024-12-02 12:41:59,911 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2024-12-02 12:41:59,911 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 418 flow [2024-12-02 12:41:59,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:41:59,912 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:41:59,912 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:41:59,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 12:41:59,912 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 12:41:59,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:41:59,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1280110354, now seen corresponding path program 1 times [2024-12-02 12:41:59,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:41:59,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228803575] [2024-12-02 12:41:59,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:41:59,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:41:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:41:59,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 12:41:59,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:41:59,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228803575] [2024-12-02 12:41:59,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228803575] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:41:59,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:41:59,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 12:41:59,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031993358] [2024-12-02 12:41:59,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:41:59,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:41:59,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:41:59,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:41:59,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:41:59,971 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-12-02 12:41:59,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 418 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:41:59,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:41:59,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-12-02 12:41:59,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:42:00,143 INFO L124 PetriNetUnfolderBase]: 539/1146 cut-off events. [2024-12-02 12:42:00,143 INFO L125 PetriNetUnfolderBase]: For 3848/3884 co-relation queries the response was YES. [2024-12-02 12:42:00,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4366 conditions, 1146 events. 539/1146 cut-off events. For 3848/3884 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6011 event pairs, 338 based on Foata normal form. 9/1129 useless extension candidates. Maximal degree in co-relation 4343. Up to 903 conditions per place. [2024-12-02 12:42:00,148 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 36 selfloop transitions, 1 changer transitions 7/54 dead transitions. [2024-12-02 12:42:00,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 54 transitions, 502 flow [2024-12-02 12:42:00,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:42:00,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 12:42:00,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2024-12-02 12:42:00,149 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-12-02 12:42:00,149 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 418 flow. Second operand 3 states and 43 transitions. [2024-12-02 12:42:00,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 54 transitions, 502 flow [2024-12-02 12:42:00,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 54 transitions, 501 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 12:42:00,153 INFO L231 Difference]: Finished difference. Result has 63 places, 47 transitions, 389 flow [2024-12-02 12:42:00,154 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=389, PETRI_PLACES=63, PETRI_TRANSITIONS=47} [2024-12-02 12:42:00,154 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2024-12-02 12:42:00,154 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 47 transitions, 389 flow [2024-12-02 12:42:00,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:42:00,154 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:42:00,154 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2024-12-02 12:42:00,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 12:42:00,155 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 12:42:00,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:42:00,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1787896435, now seen corresponding path program 1 times [2024-12-02 12:42:00,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:42:00,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328529049] [2024-12-02 12:42:00,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:42:00,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:42:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:42:00,233 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:42:00,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:42:00,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328529049] [2024-12-02 12:42:00,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328529049] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:42:00,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414833339] [2024-12-02 12:42:00,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:42:00,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:42:00,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:42:00,235 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:42:00,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 12:42:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:42:00,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 12:42:00,279 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:42:00,318 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:42:00,319 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:42:00,401 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:42:00,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414833339] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:42:00,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:42:00,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-12-02 12:42:00,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745630176] [2024-12-02 12:42:00,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:42:00,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 12:42:00,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:42:00,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 12:42:00,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:42:00,403 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-12-02 12:42:00,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 47 transitions, 389 flow. Second operand has 13 states, 13 states have (on average 13.153846153846153) internal successors, (171), 13 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:42:00,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:42:00,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-12-02 12:42:00,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:42:00,697 INFO L124 PetriNetUnfolderBase]: 739/1895 cut-off events. [2024-12-02 12:42:00,697 INFO L125 PetriNetUnfolderBase]: For 7177/7265 co-relation queries the response was YES. [2024-12-02 12:42:00,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6985 conditions, 1895 events. 739/1895 cut-off events. For 7177/7265 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 11189 event pairs, 31 based on Foata normal form. 72/1956 useless extension candidates. Maximal degree in co-relation 6961. Up to 279 conditions per place. [2024-12-02 12:42:00,709 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 96 selfloop transitions, 53 changer transitions 0/159 dead transitions. [2024-12-02 12:42:00,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 159 transitions, 1450 flow [2024-12-02 12:42:00,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 12:42:00,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-12-02 12:42:00,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 248 transitions. [2024-12-02 12:42:00,711 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2024-12-02 12:42:00,711 INFO L175 Difference]: Start difference. First operand has 63 places, 47 transitions, 389 flow. Second operand 13 states and 248 transitions. [2024-12-02 12:42:00,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 159 transitions, 1450 flow [2024-12-02 12:42:00,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 159 transitions, 1449 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 12:42:00,721 INFO L231 Difference]: Finished difference. Result has 79 places, 88 transitions, 1042 flow [2024-12-02 12:42:00,721 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1042, PETRI_PLACES=79, PETRI_TRANSITIONS=88} [2024-12-02 12:42:00,722 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 45 predicate places. [2024-12-02 12:42:00,722 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 88 transitions, 1042 flow [2024-12-02 12:42:00,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.153846153846153) internal successors, (171), 13 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:42:00,722 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:42:00,722 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1] [2024-12-02 12:42:00,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-12-02 12:42:00,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 12:42:00,923 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 12:42:00,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:42:00,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1333557341, now seen corresponding path program 2 times [2024-12-02 12:42:00,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:42:00,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582651804] [2024-12-02 12:42:00,923 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:42:00,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:42:00,928 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 12:42:00,929 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:42:00,948 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 12:42:00,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:42:00,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582651804] [2024-12-02 12:42:00,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582651804] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:42:00,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341605841] [2024-12-02 12:42:00,949 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:42:00,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:42:00,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:42:00,951 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:42:00,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 12:42:00,986 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 12:42:00,986 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:42:00,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 12:42:00,988 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:42:01,025 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 12:42:01,026 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:42:01,071 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 12:42:01,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341605841] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:42:01,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:42:01,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-12-02 12:42:01,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183898296] [2024-12-02 12:42:01,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:42:01,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:42:01,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:42:01,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:42:01,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:42:01,093 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-12-02 12:42:01,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 88 transitions, 1042 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:42:01,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:42:01,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-12-02 12:42:01,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:42:01,363 INFO L124 PetriNetUnfolderBase]: 1447/2790 cut-off events. [2024-12-02 12:42:01,363 INFO L125 PetriNetUnfolderBase]: For 16588/16679 co-relation queries the response was YES. [2024-12-02 12:42:01,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11627 conditions, 2790 events. 1447/2790 cut-off events. For 16588/16679 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 13819 event pairs, 237 based on Foata normal form. 136/2924 useless extension candidates. Maximal degree in co-relation 11593. Up to 1206 conditions per place. [2024-12-02 12:42:01,377 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 151 selfloop transitions, 13 changer transitions 0/167 dead transitions. [2024-12-02 12:42:01,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 167 transitions, 2478 flow [2024-12-02 12:42:01,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:42:01,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 12:42:01,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2024-12-02 12:42:01,378 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-12-02 12:42:01,378 INFO L175 Difference]: Start difference. First operand has 79 places, 88 transitions, 1042 flow. Second operand 5 states and 63 transitions. [2024-12-02 12:42:01,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 167 transitions, 2478 flow [2024-12-02 12:42:01,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 167 transitions, 2390 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-12-02 12:42:01,406 INFO L231 Difference]: Finished difference. Result has 78 places, 88 transitions, 1024 flow [2024-12-02 12:42:01,407 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1024, PETRI_PLACES=78, PETRI_TRANSITIONS=88} [2024-12-02 12:42:01,407 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 44 predicate places. [2024-12-02 12:42:01,407 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 88 transitions, 1024 flow [2024-12-02 12:42:01,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:42:01,407 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:42:01,407 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1] [2024-12-02 12:42:01,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 12:42:01,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 12:42:01,608 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 12:42:01,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:42:01,608 INFO L85 PathProgramCache]: Analyzing trace with hash 874079411, now seen corresponding path program 2 times [2024-12-02 12:42:01,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:42:01,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939841909] [2024-12-02 12:42:01,609 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:42:01,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:42:01,626 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:42:01,626 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:42:01,811 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:42:01,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:42:01,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939841909] [2024-12-02 12:42:01,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939841909] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:42:01,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866774905] [2024-12-02 12:42:01,811 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:42:01,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:42:01,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:42:01,813 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:42:01,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 12:42:01,868 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:42:01,868 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:42:01,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 12:42:01,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:42:01,949 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:42:01,950 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:42:02,184 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:42:02,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866774905] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:42:02,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:42:02,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-12-02 12:42:02,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861712951] [2024-12-02 12:42:02,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:42:02,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-12-02 12:42:02,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:42:02,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-12-02 12:42:02,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-12-02 12:42:02,186 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-12-02 12:42:02,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 88 transitions, 1024 flow. Second operand has 25 states, 25 states have (on average 13.08) internal successors, (327), 25 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:42:02,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:42:02,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-12-02 12:42:02,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:42:02,997 INFO L124 PetriNetUnfolderBase]: 1903/4631 cut-off events. [2024-12-02 12:42:02,998 INFO L125 PetriNetUnfolderBase]: For 39018/39274 co-relation queries the response was YES. [2024-12-02 12:42:03,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19340 conditions, 4631 events. 1903/4631 cut-off events. For 39018/39274 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 27612 event pairs, 73 based on Foata normal form. 156/4774 useless extension candidates. Maximal degree in co-relation 19308. Up to 911 conditions per place. [2024-12-02 12:42:03,018 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 170 selfloop transitions, 225 changer transitions 0/405 dead transitions. [2024-12-02 12:42:03,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 405 transitions, 4678 flow [2024-12-02 12:42:03,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 12:42:03,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-12-02 12:42:03,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 488 transitions. [2024-12-02 12:42:03,020 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.61 [2024-12-02 12:42:03,020 INFO L175 Difference]: Start difference. First operand has 78 places, 88 transitions, 1024 flow. Second operand 25 states and 488 transitions. [2024-12-02 12:42:03,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 405 transitions, 4678 flow [2024-12-02 12:42:03,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 405 transitions, 4628 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 12:42:03,043 INFO L231 Difference]: Finished difference. Result has 120 places, 262 transitions, 4088 flow [2024-12-02 12:42:03,043 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=4088, PETRI_PLACES=120, PETRI_TRANSITIONS=262} [2024-12-02 12:42:03,043 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 86 predicate places. [2024-12-02 12:42:03,043 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 262 transitions, 4088 flow [2024-12-02 12:42:03,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 13.08) internal successors, (327), 25 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:42:03,044 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:42:03,044 INFO L206 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1] [2024-12-02 12:42:03,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 12:42:03,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 12:42:03,244 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 12:42:03,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:42:03,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1539676467, now seen corresponding path program 3 times [2024-12-02 12:42:03,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:42:03,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406310961] [2024-12-02 12:42:03,245 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 12:42:03,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:42:03,287 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-12-02 12:42:03,287 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:42:03,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:42:03,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:42:03,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406310961] [2024-12-02 12:42:03,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406310961] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:42:03,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134840040] [2024-12-02 12:42:03,807 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 12:42:03,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:42:03,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:42:03,809 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:42:03,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 12:42:03,906 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-12-02 12:42:03,906 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:42:03,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 12:42:03,911 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:42:04,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:42:04,073 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:42:04,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:42:04,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134840040] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:42:04,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:42:04,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2024-12-02 12:42:04,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933974373] [2024-12-02 12:42:04,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:42:04,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-12-02 12:42:04,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:42:04,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-12-02 12:42:04,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 12:42:04,712 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-12-02 12:42:04,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 262 transitions, 4088 flow. Second operand has 49 states, 49 states have (on average 13.040816326530612) internal successors, (639), 49 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:42:04,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:42:04,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-12-02 12:42:04,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:42:07,924 INFO L124 PetriNetUnfolderBase]: 5995/14391 cut-off events. [2024-12-02 12:42:07,924 INFO L125 PetriNetUnfolderBase]: For 293818/294738 co-relation queries the response was YES. [2024-12-02 12:42:08,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63528 conditions, 14391 events. 5995/14391 cut-off events. For 293818/294738 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 97905 event pairs, 341 based on Foata normal form. 324/14702 useless extension candidates. Maximal degree in co-relation 63474. Up to 3223 conditions per place. [2024-12-02 12:42:08,120 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 316 selfloop transitions, 865 changer transitions 0/1191 dead transitions. [2024-12-02 12:42:08,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 1191 transitions, 17436 flow [2024-12-02 12:42:08,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-12-02 12:42:08,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-12-02 12:42:08,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 968 transitions. [2024-12-02 12:42:08,125 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6173469387755102 [2024-12-02 12:42:08,125 INFO L175 Difference]: Start difference. First operand has 120 places, 262 transitions, 4088 flow. Second operand 49 states and 968 transitions. [2024-12-02 12:42:08,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 1191 transitions, 17436 flow [2024-12-02 12:42:08,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 1191 transitions, 15648 flow, removed 866 selfloop flow, removed 5 redundant places. [2024-12-02 12:42:08,351 INFO L231 Difference]: Finished difference. Result has 208 places, 904 transitions, 15465 flow [2024-12-02 12:42:08,352 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3848, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=15465, PETRI_PLACES=208, PETRI_TRANSITIONS=904} [2024-12-02 12:42:08,352 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 174 predicate places. [2024-12-02 12:42:08,352 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 904 transitions, 15465 flow [2024-12-02 12:42:08,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 13.040816326530612) internal successors, (639), 49 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:42:08,353 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:42:08,353 INFO L206 CegarLoopForPetriNet]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1, 1] [2024-12-02 12:42:08,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 12:42:08,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 12:42:08,554 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 12:42:08,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:42:08,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1753006643, now seen corresponding path program 4 times [2024-12-02 12:42:08,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:42:08,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296674187] [2024-12-02 12:42:08,555 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 12:42:08,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:42:08,673 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 12:42:08,673 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:42:10,890 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:42:10,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:42:10,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296674187] [2024-12-02 12:42:10,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296674187] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:42:10,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898056733] [2024-12-02 12:42:10,890 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 12:42:10,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:42:10,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:42:10,892 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:42:10,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 12:42:10,989 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 12:42:10,989 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:42:10,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-12-02 12:42:10,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:42:11,229 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:42:11,229 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:42:13,635 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:42:13,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898056733] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:42:13,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:42:13,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 95 [2024-12-02 12:42:13,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502552274] [2024-12-02 12:42:13,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:42:13,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-12-02 12:42:13,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:42:13,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-12-02 12:42:13,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-12-02 12:42:13,639 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-12-02 12:42:13,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 904 transitions, 15465 flow. Second operand has 97 states, 97 states have (on average 13.02061855670103) internal successors, (1263), 97 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:42:13,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:42:13,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-12-02 12:42:13,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:42:33,988 INFO L124 PetriNetUnfolderBase]: 21127/50119 cut-off events. [2024-12-02 12:42:33,988 INFO L125 PetriNetUnfolderBase]: For 2275094/2278502 co-relation queries the response was YES. [2024-12-02 12:42:34,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225624 conditions, 50119 events. 21127/50119 cut-off events. For 2275094/2278502 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 396178 event pairs, 1497 based on Foata normal form. 660/50766 useless extension candidates. Maximal degree in co-relation 225528. Up to 11095 conditions per place. [2024-12-02 12:42:34,715 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 606 selfloop transitions, 3305 changer transitions 0/3921 dead transitions. [2024-12-02 12:42:34,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 3921 transitions, 63157 flow [2024-12-02 12:42:34,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-12-02 12:42:34,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2024-12-02 12:42:34,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 1928 transitions. [2024-12-02 12:42:34,720 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6211340206185567 [2024-12-02 12:42:34,720 INFO L175 Difference]: Start difference. First operand has 208 places, 904 transitions, 15465 flow. Second operand 97 states and 1928 transitions. [2024-12-02 12:42:34,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 3921 transitions, 63157 flow [2024-12-02 12:42:36,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 3921 transitions, 56472 flow, removed 3176 selfloop flow, removed 11 redundant places. [2024-12-02 12:42:36,400 INFO L231 Difference]: Finished difference. Result has 386 places, 3346 transitions, 59334 flow [2024-12-02 12:42:36,401 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=14768, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=904, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=873, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=97, PETRI_FLOW=59334, PETRI_PLACES=386, PETRI_TRANSITIONS=3346} [2024-12-02 12:42:36,401 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 352 predicate places. [2024-12-02 12:42:36,401 INFO L471 AbstractCegarLoop]: Abstraction has has 386 places, 3346 transitions, 59334 flow [2024-12-02 12:42:36,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 13.02061855670103) internal successors, (1263), 97 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:42:36,402 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:42:36,402 INFO L206 CegarLoopForPetriNet]: trace histogram [95, 94, 94, 94, 94, 1, 1, 1, 1] [2024-12-02 12:42:36,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 12:42:36,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:42:36,603 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 12:42:36,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:42:36,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1457919027, now seen corresponding path program 5 times [2024-12-02 12:42:36,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:42:36,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017009878] [2024-12-02 12:42:36,605 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 12:42:36,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:42:37,028 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 95 check-sat command(s) [2024-12-02 12:42:37,028 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:42:42,602 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:42:42,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:42:42,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017009878] [2024-12-02 12:42:42,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017009878] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:42:42,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003943244] [2024-12-02 12:42:42,602 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 12:42:42,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:42:42,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:42:42,604 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:42:42,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 12:42:42,979 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 95 check-sat command(s) [2024-12-02 12:42:42,979 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:42:42,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-12-02 12:42:42,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:42:43,416 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:42:43,416 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:42:52,187 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:42:52,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003943244] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:42:52,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:42:52,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2024-12-02 12:42:52,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896815479] [2024-12-02 12:42:52,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:42:52,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2024-12-02 12:42:52,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:42:52,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2024-12-02 12:42:52,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2024-12-02 12:42:52,199 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-12-02 12:42:52,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 3346 transitions, 59334 flow. Second operand has 192 states, 192 states have (on average 13.0) internal successors, (2496), 192 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:42:52,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:42:52,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-12-02 12:42:52,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:46:03,245 INFO L124 PetriNetUnfolderBase]: 79075/186153 cut-off events. [2024-12-02 12:46:03,245 INFO L125 PetriNetUnfolderBase]: For 18285518/18298518 co-relation queries the response was YES. [2024-12-02 12:46:07,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 846726 conditions, 186153 events. 79075/186153 cut-off events. For 18285518/18298518 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 1692738 event pairs, 6217 based on Foata normal form. 1332/187458 useless extension candidates. Maximal degree in co-relation 846546. Up to 40663 conditions per place. [2024-12-02 12:46:08,456 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 1182 selfloop transitions, 12801 changer transitions 0/13993 dead transitions. [2024-12-02 12:46:08,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 13993 transitions, 238500 flow [2024-12-02 12:46:08,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-12-02 12:46:08,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2024-12-02 12:46:08,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 3833 transitions. [2024-12-02 12:46:08,465 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6238606770833334 [2024-12-02 12:46:08,465 INFO L175 Difference]: Start difference. First operand has 386 places, 3346 transitions, 59334 flow. Second operand 192 states and 3833 transitions. [2024-12-02 12:46:08,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 13993 transitions, 238500 flow [2024-12-02 12:46:26,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 13993 transitions, 212782 flow, removed 12116 selfloop flow, removed 23 redundant places. [2024-12-02 12:46:26,508 INFO L231 Difference]: Finished difference. Result has 743 places, 12844 transitions, 230987 flow [2024-12-02 12:46:26,509 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=57124, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3313, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=192, PETRI_FLOW=230987, PETRI_PLACES=743, PETRI_TRANSITIONS=12844} [2024-12-02 12:46:26,510 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 709 predicate places. [2024-12-02 12:46:26,510 INFO L471 AbstractCegarLoop]: Abstraction has has 743 places, 12844 transitions, 230987 flow [2024-12-02 12:46:26,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 13.0) internal successors, (2496), 192 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:46:26,511 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:46:26,511 INFO L206 CegarLoopForPetriNet]: trace histogram [191, 190, 190, 190, 190, 1, 1, 1, 1] [2024-12-02 12:46:26,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 12:46:26,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:46:26,712 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 12:46:26,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:46:26,718 INFO L85 PathProgramCache]: Analyzing trace with hash 61126707, now seen corresponding path program 6 times [2024-12-02 12:46:26,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:46:26,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943275146] [2024-12-02 12:46:26,718 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 12:46:26,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:46:28,857 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 191 check-sat command(s) [2024-12-02 12:46:28,857 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:46:54,382 INFO L134 CoverageAnalysis]: Checked inductivity of 90155 backedges. 0 proven. 90155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:46:54,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:46:54,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943275146] [2024-12-02 12:46:54,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943275146] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:46:54,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293117346] [2024-12-02 12:46:54,382 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 12:46:54,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:46:54,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:46:54,384 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:46:54,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c470947-5702-4f3f-96bf-c6a57834fc86/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 12:46:55,563 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 191 check-sat command(s) [2024-12-02 12:46:55,564 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:46:55,585 INFO L256 TraceCheckSpWp]: Trace formula consists of 2139 conjuncts, 193 conjuncts are in the unsatisfiable core [2024-12-02 12:46:55,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:46:56,492 INFO L134 CoverageAnalysis]: Checked inductivity of 90155 backedges. 0 proven. 90155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:46:56,492 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:47:30,099 INFO L134 CoverageAnalysis]: Checked inductivity of 90155 backedges. 0 proven. 90155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:47:30,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293117346] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:47:30,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:47:30,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 383 [2024-12-02 12:47:30,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441424814] [2024-12-02 12:47:30,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:47:30,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 385 states [2024-12-02 12:47:30,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:47:30,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 385 interpolants. [2024-12-02 12:47:30,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840 [2024-12-02 12:47:30,132 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-12-02 12:47:30,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 743 places, 12844 transitions, 230987 flow. Second operand has 385 states, 385 states have (on average 13.005194805194805) internal successors, (5007), 385 states have internal predecessors, (5007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:47:30,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:47:30,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-12-02 12:47:30,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand