./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.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_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB --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 3dfcb4860b3021904fb2e25e7c2a428c9bcb0d82c2290cad723458395a0647ea --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:34:12,306 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:34:12,387 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-27 20:34:12,393 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:34:12,393 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:34:12,420 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:34:12,420 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:34:12,421 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:34:12,421 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:34:12,421 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:34:12,421 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:34:12,422 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:34:12,422 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:34:12,422 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:34:12,422 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:34:12,423 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:34:12,423 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:34:12,423 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:34:12,423 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:34:12,423 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:34:12,424 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:34:12,424 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:34:12,424 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:34:12,424 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:34:12,424 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-27 20:34:12,424 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 20:34:12,424 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:34:12,425 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:34:12,425 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:34:12,425 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:34:12,425 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:34:12,425 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:34:12,425 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:34:12,426 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:34:12,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:34:12,426 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:34:12,426 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:34:12,426 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:34:12,426 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:34:12,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:34:12,427 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:34:12,427 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:34:12,427 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:34:12,427 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:34:12,427 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:34:12,427 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:34:12,428 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:34:12,428 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:34:12,428 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:34:12,428 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:34:12,428 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_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 3dfcb4860b3021904fb2e25e7c2a428c9bcb0d82c2290cad723458395a0647ea [2024-11-27 20:34:12,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:34:12,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:34:12,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:34:12,800 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:34:12,800 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:34:12,802 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2024-11-27 20:34:15,950 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/data/02733c3ff/d70533285d634dcbbc5af5556cf1f18b/FLAG126014341 [2024-11-27 20:34:16,215 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:34:16,216 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2024-11-27 20:34:16,232 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/data/02733c3ff/d70533285d634dcbbc5af5556cf1f18b/FLAG126014341 [2024-11-27 20:34:16,509 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/data/02733c3ff/d70533285d634dcbbc5af5556cf1f18b [2024-11-27 20:34:16,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:34:16,514 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:34:16,516 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:34:16,516 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:34:16,522 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:34:16,523 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:34:16" (1/1) ... [2024-11-27 20:34:16,524 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ce9b147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:16, skipping insertion in model container [2024-11-27 20:34:16,524 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:34:16" (1/1) ... [2024-11-27 20:34:16,550 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:34:16,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:34:16,783 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:34:16,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:34:16,848 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:34:16,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:16 WrapperNode [2024-11-27 20:34:16,849 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:34:16,850 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:34:16,850 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:34:16,850 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:34:16,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:16" (1/1) ... [2024-11-27 20:34:16,870 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:16" (1/1) ... [2024-11-27 20:34:16,921 INFO L138 Inliner]: procedures = 27, calls = 68, calls flagged for inlining = 29, calls inlined = 35, statements flattened = 426 [2024-11-27 20:34:16,924 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:34:16,925 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:34:16,925 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:34:16,926 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:34:16,942 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:16" (1/1) ... [2024-11-27 20:34:16,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:16" (1/1) ... [2024-11-27 20:34:16,952 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:16" (1/1) ... [2024-11-27 20:34:17,001 INFO L175 MemorySlicer]: Split 24 memory accesses to 4 slices as follows [2, 3, 3, 16]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 4]. [2024-11-27 20:34:17,001 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:16" (1/1) ... [2024-11-27 20:34:17,002 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:16" (1/1) ... [2024-11-27 20:34:17,027 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:16" (1/1) ... [2024-11-27 20:34:17,029 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:16" (1/1) ... [2024-11-27 20:34:17,035 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:16" (1/1) ... [2024-11-27 20:34:17,038 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:16" (1/1) ... [2024-11-27 20:34:17,040 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:16" (1/1) ... [2024-11-27 20:34:17,045 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:34:17,046 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:34:17,046 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:34:17,046 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:34:17,047 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:16" (1/1) ... [2024-11-27 20:34:17,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:34:17,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:17,085 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:34:17,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:34:17,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:34:17,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-27 20:34:17,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-27 20:34:17,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-27 20:34:17,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-27 20:34:17,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 20:34:17,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 20:34:17,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-27 20:34:17,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-27 20:34:17,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 20:34:17,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 20:34:17,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-27 20:34:17,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-27 20:34:17,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-27 20:34:17,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-27 20:34:17,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-27 20:34:17,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-27 20:34:17,129 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-27 20:34:17,129 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-27 20:34:17,129 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-27 20:34:17,129 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-27 20:34:17,131 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-27 20:34:17,132 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-27 20:34:17,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:34:17,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 20:34:17,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 20:34:17,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-27 20:34:17,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-27 20:34:17,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-27 20:34:17,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 20:34:17,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:34:17,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:34:17,137 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 20:34:17,351 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:34:17,356 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:34:18,261 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 20:34:18,261 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:34:19,164 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:34:19,164 INFO L312 CfgBuilder]: Removed 9 assume(true) statements. [2024-11-27 20:34:19,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:34:19 BoogieIcfgContainer [2024-11-27 20:34:19,165 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:34:19,168 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:34:19,169 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:34:19,174 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:34:19,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:34:16" (1/3) ... [2024-11-27 20:34:19,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78edca91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:34:19, skipping insertion in model container [2024-11-27 20:34:19,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:16" (2/3) ... [2024-11-27 20:34:19,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78edca91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:34:19, skipping insertion in model container [2024-11-27 20:34:19,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:34:19" (3/3) ... [2024-11-27 20:34:19,179 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2024-11-27 20:34:19,198 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:34:19,199 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-prod-cons-eq.wvr.c that has 4 procedures, 69 locations, 1 initial locations, 9 loop locations, and 24 error locations. [2024-11-27 20:34:19,200 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 20:34:19,341 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-27 20:34:19,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 77 transitions, 175 flow [2024-11-27 20:34:19,459 INFO L124 PetriNetUnfolderBase]: 9/74 cut-off events. [2024-11-27 20:34:19,463 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-27 20:34:19,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 74 events. 9/74 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 228 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-11-27 20:34:19,469 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 77 transitions, 175 flow [2024-11-27 20:34:19,473 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 72 transitions, 159 flow [2024-11-27 20:34:19,485 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:34:19,502 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;@5efcfab3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:34:19,503 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-11-27 20:34:19,509 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 20:34:19,509 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-27 20:34:19,509 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 20:34:19,509 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:19,510 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-27 20:34:19,511 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:34:19,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:19,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1384279, now seen corresponding path program 1 times [2024-11-27 20:34:19,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:19,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863875901] [2024-11-27 20:34:19,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:19,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:19,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:19,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:19,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863875901] [2024-11-27 20:34:19,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863875901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:19,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:19,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:34:19,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357846189] [2024-11-27 20:34:19,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:19,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:34:19,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:19,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:34:19,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:34:19,987 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-11-27 20:34:19,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:19,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:19,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-11-27 20:34:19,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:20,786 INFO L124 PetriNetUnfolderBase]: 993/1459 cut-off events. [2024-11-27 20:34:20,786 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-11-27 20:34:20,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2950 conditions, 1459 events. 993/1459 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 7647 event pairs, 581 based on Foata normal form. 4/805 useless extension candidates. Maximal degree in co-relation 2759. Up to 1343 conditions per place. [2024-11-27 20:34:20,805 INFO L140 encePairwiseOnDemand]: 55/77 looper letters, 32 selfloop transitions, 12 changer transitions 1/62 dead transitions. [2024-11-27 20:34:20,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 62 transitions, 229 flow [2024-11-27 20:34:20,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:34:20,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:34:20,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-27 20:34:20,826 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4383116883116883 [2024-11-27 20:34:20,828 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 159 flow. Second operand 4 states and 135 transitions. [2024-11-27 20:34:20,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 62 transitions, 229 flow [2024-11-27 20:34:20,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 62 transitions, 220 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-27 20:34:20,848 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 151 flow [2024-11-27 20:34:20,853 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2024-11-27 20:34:20,858 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, -12 predicate places. [2024-11-27 20:34:20,858 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 151 flow [2024-11-27 20:34:20,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:20,859 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:20,859 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-27 20:34:20,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:34:20,860 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:34:20,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:20,861 INFO L85 PathProgramCache]: Analyzing trace with hash 42914040, now seen corresponding path program 1 times [2024-11-27 20:34:20,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:20,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687491067] [2024-11-27 20:34:20,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:20,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:20,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:21,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:21,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:21,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687491067] [2024-11-27 20:34:21,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687491067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:21,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:21,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:34:21,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500060193] [2024-11-27 20:34:21,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:21,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:34:21,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:21,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:34:21,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:34:21,102 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-11-27 20:34:21,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:21,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:21,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-11-27 20:34:21,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:21,698 INFO L124 PetriNetUnfolderBase]: 993/1468 cut-off events. [2024-11-27 20:34:21,698 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-11-27 20:34:21,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2956 conditions, 1468 events. 993/1468 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 7772 event pairs, 579 based on Foata normal form. 4/821 useless extension candidates. Maximal degree in co-relation 2858. Up to 1354 conditions per place. [2024-11-27 20:34:21,711 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 42 selfloop transitions, 14 changer transitions 0/73 dead transitions. [2024-11-27 20:34:21,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 73 transitions, 307 flow [2024-11-27 20:34:21,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:34:21,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:34:21,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 140 transitions. [2024-11-27 20:34:21,713 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-11-27 20:34:21,713 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 151 flow. Second operand 4 states and 140 transitions. [2024-11-27 20:34:21,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 73 transitions, 307 flow [2024-11-27 20:34:21,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 73 transitions, 263 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 20:34:21,717 INFO L231 Difference]: Finished difference. Result has 63 places, 73 transitions, 239 flow [2024-11-27 20:34:21,717 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=239, PETRI_PLACES=63, PETRI_TRANSITIONS=73} [2024-11-27 20:34:21,718 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2024-11-27 20:34:21,718 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 73 transitions, 239 flow [2024-11-27 20:34:21,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:21,719 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:21,719 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-27 20:34:21,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:34:21,719 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:34:21,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:21,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1709437330, now seen corresponding path program 1 times [2024-11-27 20:34:21,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:21,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143477800] [2024-11-27 20:34:21,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:21,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:21,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:21,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:21,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143477800] [2024-11-27 20:34:21,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143477800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:21,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:21,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:34:21,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140516595] [2024-11-27 20:34:21,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:21,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:34:21,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:21,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:34:21,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:34:21,926 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-11-27 20:34:21,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 73 transitions, 239 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:21,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:21,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-11-27 20:34:21,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:22,467 INFO L124 PetriNetUnfolderBase]: 994/1472 cut-off events. [2024-11-27 20:34:22,467 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-27 20:34:22,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2985 conditions, 1472 events. 994/1472 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 7811 event pairs, 579 based on Foata normal form. 1/823 useless extension candidates. Maximal degree in co-relation 2894. Up to 1362 conditions per place. [2024-11-27 20:34:22,486 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 52 selfloop transitions, 5 changer transitions 0/76 dead transitions. [2024-11-27 20:34:22,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 76 transitions, 359 flow [2024-11-27 20:34:22,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:34:22,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:34:22,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2024-11-27 20:34:22,490 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4902597402597403 [2024-11-27 20:34:22,490 INFO L175 Difference]: Start difference. First operand has 63 places, 73 transitions, 239 flow. Second operand 4 states and 151 transitions. [2024-11-27 20:34:22,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 76 transitions, 359 flow [2024-11-27 20:34:22,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 76 transitions, 359 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 20:34:22,494 INFO L231 Difference]: Finished difference. Result has 68 places, 76 transitions, 271 flow [2024-11-27 20:34:22,494 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=68, PETRI_TRANSITIONS=76} [2024-11-27 20:34:22,495 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, -5 predicate places. [2024-11-27 20:34:22,495 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 76 transitions, 271 flow [2024-11-27 20:34:22,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:22,495 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:22,495 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-27 20:34:22,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:34:22,496 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:34:22,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:22,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1446703182, now seen corresponding path program 1 times [2024-11-27 20:34:22,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:22,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82968013] [2024-11-27 20:34:22,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:22,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:22,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:22,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:22,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82968013] [2024-11-27 20:34:22,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82968013] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:22,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070225537] [2024-11-27 20:34:22,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:22,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:22,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:22,695 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:22,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:34:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:22,849 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:34:22,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:22,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:22,909 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:34:22,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:22,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070225537] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:34:22,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:34:22,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-27 20:34:22,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394095764] [2024-11-27 20:34:22,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:34:22,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:34:22,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:22,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:34:22,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:34:23,027 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-11-27 20:34:23,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 76 transitions, 271 flow. Second operand has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:23,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:23,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-11-27 20:34:23,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:23,683 INFO L124 PetriNetUnfolderBase]: 1006/1520 cut-off events. [2024-11-27 20:34:23,683 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-11-27 20:34:23,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3132 conditions, 1520 events. 1006/1520 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 8180 event pairs, 579 based on Foata normal form. 0/866 useless extension candidates. Maximal degree in co-relation 3101. Up to 1363 conditions per place. [2024-11-27 20:34:23,694 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 45 selfloop transitions, 50 changer transitions 0/112 dead transitions. [2024-11-27 20:34:23,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 112 transitions, 626 flow [2024-11-27 20:34:23,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:34:23,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:34:23,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 304 transitions. [2024-11-27 20:34:23,700 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3948051948051948 [2024-11-27 20:34:23,701 INFO L175 Difference]: Start difference. First operand has 68 places, 76 transitions, 271 flow. Second operand 10 states and 304 transitions. [2024-11-27 20:34:23,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 112 transitions, 626 flow [2024-11-27 20:34:23,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 112 transitions, 619 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:34:23,707 INFO L231 Difference]: Finished difference. Result has 79 places, 112 transitions, 597 flow [2024-11-27 20:34:23,707 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=597, PETRI_PLACES=79, PETRI_TRANSITIONS=112} [2024-11-27 20:34:23,709 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 6 predicate places. [2024-11-27 20:34:23,709 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 112 transitions, 597 flow [2024-11-27 20:34:23,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:23,710 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:23,710 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:23,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:34:23,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:23,914 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:34:23,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:23,915 INFO L85 PathProgramCache]: Analyzing trace with hash -2091673965, now seen corresponding path program 1 times [2024-11-27 20:34:23,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:23,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173085814] [2024-11-27 20:34:23,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:23,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:23,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:24,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:24,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:24,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173085814] [2024-11-27 20:34:24,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173085814] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:24,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:24,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:34:24,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768416367] [2024-11-27 20:34:24,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:24,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:34:24,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:24,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:34:24,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:34:24,098 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-11-27 20:34:24,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 112 transitions, 597 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:24,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:24,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-11-27 20:34:24,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:24,603 INFO L124 PetriNetUnfolderBase]: 1012/1545 cut-off events. [2024-11-27 20:34:24,603 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-11-27 20:34:24,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3301 conditions, 1545 events. 1012/1545 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 8448 event pairs, 579 based on Foata normal form. 1/898 useless extension candidates. Maximal degree in co-relation 3268. Up to 1401 conditions per place. [2024-11-27 20:34:24,617 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 102 selfloop transitions, 9 changer transitions 0/130 dead transitions. [2024-11-27 20:34:24,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 130 transitions, 933 flow [2024-11-27 20:34:24,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:34:24,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:34:24,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 154 transitions. [2024-11-27 20:34:24,619 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-27 20:34:24,619 INFO L175 Difference]: Start difference. First operand has 79 places, 112 transitions, 597 flow. Second operand 4 states and 154 transitions. [2024-11-27 20:34:24,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 130 transitions, 933 flow [2024-11-27 20:34:24,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 130 transitions, 772 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-11-27 20:34:24,633 INFO L231 Difference]: Finished difference. Result has 80 places, 119 transitions, 544 flow [2024-11-27 20:34:24,633 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=544, PETRI_PLACES=80, PETRI_TRANSITIONS=119} [2024-11-27 20:34:24,634 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 7 predicate places. [2024-11-27 20:34:24,634 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 119 transitions, 544 flow [2024-11-27 20:34:24,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:24,636 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:24,636 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:24,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:34:24,636 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:34:24,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:24,636 INFO L85 PathProgramCache]: Analyzing trace with hash -418875114, now seen corresponding path program 1 times [2024-11-27 20:34:24,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:24,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940815338] [2024-11-27 20:34:24,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:24,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:24,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:34:24,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:24,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940815338] [2024-11-27 20:34:24,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940815338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:24,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:24,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:34:24,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143476256] [2024-11-27 20:34:24,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:24,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:34:24,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:24,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:34:24,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:34:24,948 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-27 20:34:24,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 119 transitions, 544 flow. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:24,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:24,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-27 20:34:24,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:25,714 INFO L124 PetriNetUnfolderBase]: 1409/2292 cut-off events. [2024-11-27 20:34:25,715 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-11-27 20:34:25,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4837 conditions, 2292 events. 1409/2292 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 14588 event pairs, 953 based on Foata normal form. 33/1449 useless extension candidates. Maximal degree in co-relation 4802. Up to 1410 conditions per place. [2024-11-27 20:34:25,732 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 144 selfloop transitions, 13 changer transitions 0/178 dead transitions. [2024-11-27 20:34:25,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 178 transitions, 1134 flow [2024-11-27 20:34:25,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:34:25,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:34:25,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 214 transitions. [2024-11-27 20:34:25,734 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5558441558441558 [2024-11-27 20:34:25,734 INFO L175 Difference]: Start difference. First operand has 80 places, 119 transitions, 544 flow. Second operand 5 states and 214 transitions. [2024-11-27 20:34:25,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 178 transitions, 1134 flow [2024-11-27 20:34:25,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 178 transitions, 1127 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:34:25,741 INFO L231 Difference]: Finished difference. Result has 85 places, 125 transitions, 634 flow [2024-11-27 20:34:25,741 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=634, PETRI_PLACES=85, PETRI_TRANSITIONS=125} [2024-11-27 20:34:25,742 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 12 predicate places. [2024-11-27 20:34:25,742 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 125 transitions, 634 flow [2024-11-27 20:34:25,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:25,742 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:25,742 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:25,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:34:25,742 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:34:25,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:25,743 INFO L85 PathProgramCache]: Analyzing trace with hash -51279834, now seen corresponding path program 1 times [2024-11-27 20:34:25,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:25,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174058460] [2024-11-27 20:34:25,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:25,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:25,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:25,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:25,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174058460] [2024-11-27 20:34:25,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174058460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:25,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:25,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-27 20:34:25,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603326490] [2024-11-27 20:34:25,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:25,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:34:25,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:25,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:34:25,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:34:25,880 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-27 20:34:25,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 125 transitions, 634 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:25,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:25,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-27 20:34:25,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:26,469 INFO L124 PetriNetUnfolderBase]: 1349/2084 cut-off events. [2024-11-27 20:34:26,470 INFO L125 PetriNetUnfolderBase]: For 316/316 co-relation queries the response was YES. [2024-11-27 20:34:26,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4691 conditions, 2084 events. 1349/2084 cut-off events. For 316/316 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 11115 event pairs, 327 based on Foata normal form. 26/1590 useless extension candidates. Maximal degree in co-relation 4653. Up to 1554 conditions per place. [2024-11-27 20:34:26,484 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 112 selfloop transitions, 2 changer transitions 2/137 dead transitions. [2024-11-27 20:34:26,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 137 transitions, 896 flow [2024-11-27 20:34:26,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:34:26,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:34:26,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2024-11-27 20:34:26,485 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6147186147186147 [2024-11-27 20:34:26,485 INFO L175 Difference]: Start difference. First operand has 85 places, 125 transitions, 634 flow. Second operand 3 states and 142 transitions. [2024-11-27 20:34:26,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 137 transitions, 896 flow [2024-11-27 20:34:26,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 137 transitions, 888 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-27 20:34:26,493 INFO L231 Difference]: Finished difference. Result has 87 places, 126 transitions, 648 flow [2024-11-27 20:34:26,493 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=648, PETRI_PLACES=87, PETRI_TRANSITIONS=126} [2024-11-27 20:34:26,494 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 14 predicate places. [2024-11-27 20:34:26,494 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 126 transitions, 648 flow [2024-11-27 20:34:26,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:26,494 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:26,494 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:26,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 20:34:26,495 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:34:26,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:26,495 INFO L85 PathProgramCache]: Analyzing trace with hash -51279833, now seen corresponding path program 1 times [2024-11-27 20:34:26,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:26,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178764732] [2024-11-27 20:34:26,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:26,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:26,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:26,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:26,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178764732] [2024-11-27 20:34:26,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178764732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:26,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:26,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-27 20:34:26,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224264353] [2024-11-27 20:34:26,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:26,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:34:26,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:26,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:34:26,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:34:26,625 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-27 20:34:26,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 126 transitions, 648 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:26,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:26,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-27 20:34:26,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:27,215 INFO L124 PetriNetUnfolderBase]: 1300/1995 cut-off events. [2024-11-27 20:34:27,215 INFO L125 PetriNetUnfolderBase]: For 480/488 co-relation queries the response was YES. [2024-11-27 20:34:27,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5173 conditions, 1995 events. 1300/1995 cut-off events. For 480/488 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10403 event pairs, 284 based on Foata normal form. 30/1580 useless extension candidates. Maximal degree in co-relation 5134. Up to 1554 conditions per place. [2024-11-27 20:34:27,238 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 111 selfloop transitions, 2 changer transitions 2/136 dead transitions. [2024-11-27 20:34:27,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 136 transitions, 904 flow [2024-11-27 20:34:27,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:34:27,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:34:27,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2024-11-27 20:34:27,239 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5887445887445888 [2024-11-27 20:34:27,239 INFO L175 Difference]: Start difference. First operand has 87 places, 126 transitions, 648 flow. Second operand 3 states and 136 transitions. [2024-11-27 20:34:27,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 136 transitions, 904 flow [2024-11-27 20:34:27,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 136 transitions, 902 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:34:27,249 INFO L231 Difference]: Finished difference. Result has 89 places, 126 transitions, 654 flow [2024-11-27 20:34:27,249 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=654, PETRI_PLACES=89, PETRI_TRANSITIONS=126} [2024-11-27 20:34:27,250 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 16 predicate places. [2024-11-27 20:34:27,250 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 126 transitions, 654 flow [2024-11-27 20:34:27,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:27,252 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:27,253 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:27,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 20:34:27,253 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:34:27,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:27,254 INFO L85 PathProgramCache]: Analyzing trace with hash -298367233, now seen corresponding path program 1 times [2024-11-27 20:34:27,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:27,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900454032] [2024-11-27 20:34:27,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:27,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:27,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:27,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:27,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900454032] [2024-11-27 20:34:27,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900454032] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:27,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64956980] [2024-11-27 20:34:27,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:27,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:27,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:27,453 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:27,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:34:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:27,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:34:27,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:27,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:27,709 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:34:27,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64956980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:27,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:34:27,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-27 20:34:27,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320937055] [2024-11-27 20:34:27,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:27,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:34:27,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:27,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:34:27,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:34:27,722 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-11-27 20:34:27,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 126 transitions, 654 flow. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:27,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:27,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-11-27 20:34:27,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:28,251 INFO L124 PetriNetUnfolderBase]: 991/1664 cut-off events. [2024-11-27 20:34:28,252 INFO L125 PetriNetUnfolderBase]: For 518/518 co-relation queries the response was YES. [2024-11-27 20:34:28,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4368 conditions, 1664 events. 991/1664 cut-off events. For 518/518 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10018 event pairs, 721 based on Foata normal form. 2/1364 useless extension candidates. Maximal degree in co-relation 4328. Up to 1462 conditions per place. [2024-11-27 20:34:28,265 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 100 selfloop transitions, 17 changer transitions 0/136 dead transitions. [2024-11-27 20:34:28,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 136 transitions, 940 flow [2024-11-27 20:34:28,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:34:28,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 20:34:28,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 204 transitions. [2024-11-27 20:34:28,267 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-11-27 20:34:28,267 INFO L175 Difference]: Start difference. First operand has 89 places, 126 transitions, 654 flow. Second operand 6 states and 204 transitions. [2024-11-27 20:34:28,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 136 transitions, 940 flow [2024-11-27 20:34:28,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 136 transitions, 936 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 20:34:28,274 INFO L231 Difference]: Finished difference. Result has 91 places, 125 transitions, 680 flow [2024-11-27 20:34:28,275 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=680, PETRI_PLACES=91, PETRI_TRANSITIONS=125} [2024-11-27 20:34:28,276 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 18 predicate places. [2024-11-27 20:34:28,276 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 125 transitions, 680 flow [2024-11-27 20:34:28,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:28,276 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:28,276 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:28,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:34:28,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:28,477 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:34:28,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:28,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1126836413, now seen corresponding path program 1 times [2024-11-27 20:34:28,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:28,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553829263] [2024-11-27 20:34:28,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:28,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:28,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:34:28,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:28,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553829263] [2024-11-27 20:34:28,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553829263] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:28,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840684332] [2024-11-27 20:34:28,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:28,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:28,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:28,631 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:28,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:34:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:28,813 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:34:28,815 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:28,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:34:28,849 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:34:28,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840684332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:28,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:34:28,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-27 20:34:28,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526913777] [2024-11-27 20:34:28,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:28,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:34:28,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:28,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:34:28,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:34:28,861 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-11-27 20:34:28,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 125 transitions, 680 flow. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:28,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:28,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-11-27 20:34:28,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:29,365 INFO L124 PetriNetUnfolderBase]: 991/1663 cut-off events. [2024-11-27 20:34:29,365 INFO L125 PetriNetUnfolderBase]: For 501/501 co-relation queries the response was YES. [2024-11-27 20:34:29,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4365 conditions, 1663 events. 991/1663 cut-off events. For 501/501 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10001 event pairs, 721 based on Foata normal form. 1/1363 useless extension candidates. Maximal degree in co-relation 4325. Up to 1519 conditions per place. [2024-11-27 20:34:29,377 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 89 selfloop transitions, 17 changer transitions 0/124 dead transitions. [2024-11-27 20:34:29,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 124 transitions, 888 flow [2024-11-27 20:34:29,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:34:29,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 20:34:29,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 201 transitions. [2024-11-27 20:34:29,379 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43506493506493504 [2024-11-27 20:34:29,379 INFO L175 Difference]: Start difference. First operand has 91 places, 125 transitions, 680 flow. Second operand 6 states and 201 transitions. [2024-11-27 20:34:29,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 124 transitions, 888 flow [2024-11-27 20:34:29,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 124 transitions, 847 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-27 20:34:29,408 INFO L231 Difference]: Finished difference. Result has 91 places, 124 transitions, 669 flow [2024-11-27 20:34:29,408 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=669, PETRI_PLACES=91, PETRI_TRANSITIONS=124} [2024-11-27 20:34:29,409 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 18 predicate places. [2024-11-27 20:34:29,409 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 124 transitions, 669 flow [2024-11-27 20:34:29,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:29,409 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:29,409 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:29,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:34:29,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:29,610 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:34:29,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:29,611 INFO L85 PathProgramCache]: Analyzing trace with hash -659448255, now seen corresponding path program 1 times [2024-11-27 20:34:29,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:29,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817006107] [2024-11-27 20:34:29,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:29,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:29,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:29,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:29,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817006107] [2024-11-27 20:34:29,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817006107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:29,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013708112] [2024-11-27 20:34:29,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:29,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:29,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:29,777 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:29,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:34:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:29,961 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:34:29,963 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:30,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:30,005 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:34:30,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:30,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013708112] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:34:30,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:34:30,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-27 20:34:30,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733339565] [2024-11-27 20:34:30,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:34:30,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:34:30,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:30,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:34:30,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:34:30,096 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-11-27 20:34:30,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 124 transitions, 669 flow. Second operand has 12 states, 12 states have (on average 27.833333333333332) internal successors, (334), 12 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:30,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:30,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-11-27 20:34:30,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:30,874 INFO L124 PetriNetUnfolderBase]: 1027/1813 cut-off events. [2024-11-27 20:34:30,874 INFO L125 PetriNetUnfolderBase]: For 606/606 co-relation queries the response was YES. [2024-11-27 20:34:30,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4797 conditions, 1813 events. 1027/1813 cut-off events. For 606/606 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 11071 event pairs, 721 based on Foata normal form. 6/1518 useless extension candidates. Maximal degree in co-relation 4755. Up to 1506 conditions per place. [2024-11-27 20:34:30,886 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 140 selfloop transitions, 31 changer transitions 0/189 dead transitions. [2024-11-27 20:34:30,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 189 transitions, 1355 flow [2024-11-27 20:34:30,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:34:30,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:34:30,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 328 transitions. [2024-11-27 20:34:30,888 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42597402597402595 [2024-11-27 20:34:30,889 INFO L175 Difference]: Start difference. First operand has 91 places, 124 transitions, 669 flow. Second operand 10 states and 328 transitions. [2024-11-27 20:34:30,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 189 transitions, 1355 flow [2024-11-27 20:34:30,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 189 transitions, 1293 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-27 20:34:30,902 INFO L231 Difference]: Finished difference. Result has 98 places, 145 transitions, 827 flow [2024-11-27 20:34:30,903 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=827, PETRI_PLACES=98, PETRI_TRANSITIONS=145} [2024-11-27 20:34:30,903 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 25 predicate places. [2024-11-27 20:34:30,903 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 145 transitions, 827 flow [2024-11-27 20:34:30,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.833333333333332) internal successors, (334), 12 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:30,905 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:30,905 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:30,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 20:34:31,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-27 20:34:31,106 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:34:31,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:31,106 INFO L85 PathProgramCache]: Analyzing trace with hash -572189031, now seen corresponding path program 1 times [2024-11-27 20:34:31,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:31,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397926667] [2024-11-27 20:34:31,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:31,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:31,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:34:31,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:31,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397926667] [2024-11-27 20:34:31,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397926667] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:31,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875028596] [2024-11-27 20:34:31,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:31,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:31,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:31,242 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:31,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:34:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:31,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:34:31,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:31,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:34:31,454 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:34:31,507 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:34:31,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875028596] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:34:31,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:34:31,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-27 20:34:31,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103013976] [2024-11-27 20:34:31,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:34:31,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:34:31,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:31,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:34:31,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:34:31,530 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-11-27 20:34:31,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 145 transitions, 827 flow. Second operand has 12 states, 12 states have (on average 27.5) internal successors, (330), 12 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:31,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:31,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-11-27 20:34:31,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:32,119 INFO L124 PetriNetUnfolderBase]: 1030/1825 cut-off events. [2024-11-27 20:34:32,119 INFO L125 PetriNetUnfolderBase]: For 728/728 co-relation queries the response was YES. [2024-11-27 20:34:32,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4885 conditions, 1825 events. 1030/1825 cut-off events. For 728/728 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 11178 event pairs, 721 based on Foata normal form. 3/1528 useless extension candidates. Maximal degree in co-relation 4813. Up to 1634 conditions per place. [2024-11-27 20:34:32,132 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 113 selfloop transitions, 23 changer transitions 0/154 dead transitions. [2024-11-27 20:34:32,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 154 transitions, 1138 flow [2024-11-27 20:34:32,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:34:32,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:34:32,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 316 transitions. [2024-11-27 20:34:32,136 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4103896103896104 [2024-11-27 20:34:32,137 INFO L175 Difference]: Start difference. First operand has 98 places, 145 transitions, 827 flow. Second operand 10 states and 316 transitions. [2024-11-27 20:34:32,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 154 transitions, 1138 flow [2024-11-27 20:34:32,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 154 transitions, 1114 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-27 20:34:32,148 INFO L231 Difference]: Finished difference. Result has 108 places, 154 transitions, 906 flow [2024-11-27 20:34:32,148 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=906, PETRI_PLACES=108, PETRI_TRANSITIONS=154} [2024-11-27 20:34:32,150 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 35 predicate places. [2024-11-27 20:34:32,151 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 154 transitions, 906 flow [2024-11-27 20:34:32,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.5) internal successors, (330), 12 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:32,152 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:32,152 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-27 20:34:32,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 20:34:32,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-27 20:34:32,356 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:34:32,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:32,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1074455432, now seen corresponding path program 2 times [2024-11-27 20:34:32,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:32,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865693270] [2024-11-27 20:34:32,357 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:34:32,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:32,377 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:34:32,377 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:32,428 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-27 20:34:32,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:32,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865693270] [2024-11-27 20:34:32,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865693270] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:32,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14311157] [2024-11-27 20:34:32,428 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:34:32,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:32,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:32,431 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:32,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:34:32,587 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:34:32,588 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:32,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:34:32,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:32,627 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-27 20:34:32,627 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:34:32,662 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-27 20:34:32,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14311157] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:34:32,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:34:32,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-27 20:34:32,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591231324] [2024-11-27 20:34:32,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:34:32,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:34:32,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:32,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:34:32,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:34:32,698 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-11-27 20:34:32,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 154 transitions, 906 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:32,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:32,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-11-27 20:34:32,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:33,267 INFO L124 PetriNetUnfolderBase]: 1030/1824 cut-off events. [2024-11-27 20:34:33,268 INFO L125 PetriNetUnfolderBase]: For 774/774 co-relation queries the response was YES. [2024-11-27 20:34:33,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4906 conditions, 1824 events. 1030/1824 cut-off events. For 774/774 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 11232 event pairs, 721 based on Foata normal form. 1/1525 useless extension candidates. Maximal degree in co-relation 4857. Up to 1652 conditions per place. [2024-11-27 20:34:33,282 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 122 selfloop transitions, 16 changer transitions 0/153 dead transitions. [2024-11-27 20:34:33,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 153 transitions, 1172 flow [2024-11-27 20:34:33,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:34:33,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:34:33,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-11-27 20:34:33,284 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4025974025974026 [2024-11-27 20:34:33,284 INFO L175 Difference]: Start difference. First operand has 108 places, 154 transitions, 906 flow. Second operand 4 states and 124 transitions. [2024-11-27 20:34:33,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 153 transitions, 1172 flow [2024-11-27 20:34:33,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 153 transitions, 1151 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-27 20:34:33,295 INFO L231 Difference]: Finished difference. Result has 108 places, 153 transitions, 907 flow [2024-11-27 20:34:33,295 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=907, PETRI_PLACES=108, PETRI_TRANSITIONS=153} [2024-11-27 20:34:33,297 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 35 predicate places. [2024-11-27 20:34:33,298 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 153 transitions, 907 flow [2024-11-27 20:34:33,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:33,298 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:33,298 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:33,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-27 20:34:33,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:33,503 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:34:33,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:33,503 INFO L85 PathProgramCache]: Analyzing trace with hash -629467728, now seen corresponding path program 1 times [2024-11-27 20:34:33,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:33,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181829443] [2024-11-27 20:34:33,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:33,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:33,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:33,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:33,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:33,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181829443] [2024-11-27 20:34:33,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181829443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:33,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:33,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:34:33,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808033006] [2024-11-27 20:34:33,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:33,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:34:33,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:33,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:34:33,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:34:33,679 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-27 20:34:33,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 153 transitions, 907 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:33,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:33,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-27 20:34:33,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:34,261 INFO L124 PetriNetUnfolderBase]: 1170/2311 cut-off events. [2024-11-27 20:34:34,261 INFO L125 PetriNetUnfolderBase]: For 1151/1151 co-relation queries the response was YES. [2024-11-27 20:34:34,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6300 conditions, 2311 events. 1170/2311 cut-off events. For 1151/1151 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 15435 event pairs, 783 based on Foata normal form. 36/2050 useless extension candidates. Maximal degree in co-relation 6224. Up to 1647 conditions per place. [2024-11-27 20:34:34,278 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 224 selfloop transitions, 3 changer transitions 15/260 dead transitions. [2024-11-27 20:34:34,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 260 transitions, 2055 flow [2024-11-27 20:34:34,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:34:34,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:34:34,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 182 transitions. [2024-11-27 20:34:34,279 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-11-27 20:34:34,279 INFO L175 Difference]: Start difference. First operand has 108 places, 153 transitions, 907 flow. Second operand 4 states and 182 transitions. [2024-11-27 20:34:34,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 260 transitions, 2055 flow [2024-11-27 20:34:34,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 260 transitions, 2023 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 20:34:34,295 INFO L231 Difference]: Finished difference. Result has 109 places, 153 transitions, 886 flow [2024-11-27 20:34:34,295 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=886, PETRI_PLACES=109, PETRI_TRANSITIONS=153} [2024-11-27 20:34:34,297 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 36 predicate places. [2024-11-27 20:34:34,297 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 153 transitions, 886 flow [2024-11-27 20:34:34,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:34,297 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:34,297 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2024-11-27 20:34:34,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 20:34:34,298 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:34:34,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:34,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1603380619, now seen corresponding path program 1 times [2024-11-27 20:34:34,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:34,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355983137] [2024-11-27 20:34:34,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:34,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:34,556 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:34,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:34,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355983137] [2024-11-27 20:34:34,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355983137] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:34,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371245757] [2024-11-27 20:34:34,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:34,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:34,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:34,561 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:34,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:34:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:34,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 20:34:34,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:34,811 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:34,811 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:34:35,032 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:35,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371245757] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:34:35,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:34:35,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-27 20:34:35,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678713184] [2024-11-27 20:34:35,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:34:35,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-27 20:34:35,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:35,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-27 20:34:35,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-27 20:34:35,128 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-11-27 20:34:35,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 153 transitions, 886 flow. Second operand has 24 states, 24 states have (on average 21.083333333333332) internal successors, (506), 24 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:35,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:35,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-11-27 20:34:35,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:36,438 INFO L124 PetriNetUnfolderBase]: 1332/2959 cut-off events. [2024-11-27 20:34:36,438 INFO L125 PetriNetUnfolderBase]: For 3802/3802 co-relation queries the response was YES. [2024-11-27 20:34:36,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8583 conditions, 2959 events. 1332/2959 cut-off events. For 3802/3802 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 20235 event pairs, 783 based on Foata normal form. 156/2788 useless extension candidates. Maximal degree in co-relation 8506. Up to 1962 conditions per place. [2024-11-27 20:34:36,453 INFO L140 encePairwiseOnDemand]: 60/77 looper letters, 68 selfloop transitions, 172 changer transitions 0/255 dead transitions. [2024-11-27 20:34:36,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 255 transitions, 2020 flow [2024-11-27 20:34:36,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-27 20:34:36,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-27 20:34:36,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 621 transitions. [2024-11-27 20:34:36,458 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3665879574970484 [2024-11-27 20:34:36,458 INFO L175 Difference]: Start difference. First operand has 109 places, 153 transitions, 886 flow. Second operand 22 states and 621 transitions. [2024-11-27 20:34:36,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 255 transitions, 2020 flow [2024-11-27 20:34:36,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 255 transitions, 2016 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-27 20:34:36,481 INFO L231 Difference]: Finished difference. Result has 135 places, 255 transitions, 1994 flow [2024-11-27 20:34:36,482 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1994, PETRI_PLACES=135, PETRI_TRANSITIONS=255} [2024-11-27 20:34:36,482 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 62 predicate places. [2024-11-27 20:34:36,482 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 255 transitions, 1994 flow [2024-11-27 20:34:36,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 21.083333333333332) internal successors, (506), 24 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:36,483 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:36,483 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:36,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 20:34:36,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:36,687 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:34:36,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:36,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1735855466, now seen corresponding path program 1 times [2024-11-27 20:34:36,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:36,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124839901] [2024-11-27 20:34:36,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:36,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:36,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:34:36,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:36,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124839901] [2024-11-27 20:34:36,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124839901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:36,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:36,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:34:36,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275960844] [2024-11-27 20:34:36,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:36,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:34:36,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:36,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:34:36,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:34:36,824 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-27 20:34:36,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 255 transitions, 1994 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 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) [2024-11-27 20:34:36,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:36,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-27 20:34:36,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:37,718 INFO L124 PetriNetUnfolderBase]: 1650/3611 cut-off events. [2024-11-27 20:34:37,718 INFO L125 PetriNetUnfolderBase]: For 4286/4286 co-relation queries the response was YES. [2024-11-27 20:34:37,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11277 conditions, 3611 events. 1650/3611 cut-off events. For 4286/4286 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 26188 event pairs, 1091 based on Foata normal form. 88/3340 useless extension candidates. Maximal degree in co-relation 11194. Up to 2351 conditions per place. [2024-11-27 20:34:37,743 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 268 selfloop transitions, 8 changer transitions 2/296 dead transitions. [2024-11-27 20:34:37,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 296 transitions, 2782 flow [2024-11-27 20:34:37,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:34:37,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:34:37,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 179 transitions. [2024-11-27 20:34:37,744 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5811688311688312 [2024-11-27 20:34:37,744 INFO L175 Difference]: Start difference. First operand has 135 places, 255 transitions, 1994 flow. Second operand 4 states and 179 transitions. [2024-11-27 20:34:37,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 296 transitions, 2782 flow [2024-11-27 20:34:37,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 296 transitions, 2267 flow, removed 149 selfloop flow, removed 10 redundant places. [2024-11-27 20:34:37,789 INFO L231 Difference]: Finished difference. Result has 129 places, 255 transitions, 1564 flow [2024-11-27 20:34:37,790 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1564, PETRI_PLACES=129, PETRI_TRANSITIONS=255} [2024-11-27 20:34:37,790 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 56 predicate places. [2024-11-27 20:34:37,791 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 255 transitions, 1564 flow [2024-11-27 20:34:37,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 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) [2024-11-27 20:34:37,791 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:37,791 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:37,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 20:34:37,791 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:34:37,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:37,792 INFO L85 PathProgramCache]: Analyzing trace with hash 658101066, now seen corresponding path program 1 times [2024-11-27 20:34:37,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:37,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606027728] [2024-11-27 20:34:37,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:37,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:38,051 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:34:38,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:38,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606027728] [2024-11-27 20:34:38,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606027728] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:38,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084608396] [2024-11-27 20:34:38,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:38,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:38,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:38,055 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:38,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:34:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:38,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 20:34:38,249 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:38,304 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:34:38,304 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:34:38,364 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:34:38,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084608396] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:38,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:34:38,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2024-11-27 20:34:38,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342540944] [2024-11-27 20:34:38,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:38,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:34:38,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:38,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:34:38,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:34:38,367 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-27 20:34:38,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 255 transitions, 1564 flow. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:38,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:38,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-27 20:34:38,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:39,341 INFO L124 PetriNetUnfolderBase]: 1648/3609 cut-off events. [2024-11-27 20:34:39,341 INFO L125 PetriNetUnfolderBase]: For 3281/3281 co-relation queries the response was YES. [2024-11-27 20:34:39,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10561 conditions, 3609 events. 1648/3609 cut-off events. For 3281/3281 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 25827 event pairs, 1091 based on Foata normal form. 2/3252 useless extension candidates. Maximal degree in co-relation 10475. Up to 2228 conditions per place. [2024-11-27 20:34:39,364 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 323 selfloop transitions, 33 changer transitions 4/378 dead transitions. [2024-11-27 20:34:39,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 378 transitions, 3075 flow [2024-11-27 20:34:39,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:34:39,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:34:39,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 208 transitions. [2024-11-27 20:34:39,367 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5402597402597402 [2024-11-27 20:34:39,368 INFO L175 Difference]: Start difference. First operand has 129 places, 255 transitions, 1564 flow. Second operand 5 states and 208 transitions. [2024-11-27 20:34:39,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 378 transitions, 3075 flow [2024-11-27 20:34:39,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 378 transitions, 3059 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 20:34:39,408 INFO L231 Difference]: Finished difference. Result has 131 places, 254 transitions, 1608 flow [2024-11-27 20:34:39,409 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1608, PETRI_PLACES=131, PETRI_TRANSITIONS=254} [2024-11-27 20:34:39,409 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 58 predicate places. [2024-11-27 20:34:39,409 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 254 transitions, 1608 flow [2024-11-27 20:34:39,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:39,410 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:39,410 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:39,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 20:34:39,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 20:34:39,614 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:34:39,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:39,615 INFO L85 PathProgramCache]: Analyzing trace with hash 658755771, now seen corresponding path program 2 times [2024-11-27 20:34:39,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:39,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604336111] [2024-11-27 20:34:39,615 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:34:39,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:39,661 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:34:39,661 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:39,992 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-27 20:34:39,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:39,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604336111] [2024-11-27 20:34:39,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604336111] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:39,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360362441] [2024-11-27 20:34:39,993 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:34:39,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:39,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:39,995 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:39,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 20:34:40,219 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:34:40,219 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:40,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:34:40,225 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:40,311 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-27 20:34:40,311 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:34:40,378 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-27 20:34:40,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360362441] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:34:40,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:34:40,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 3, 3] total 10 [2024-11-27 20:34:40,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491999628] [2024-11-27 20:34:40,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:34:40,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:34:40,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:40,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:34:40,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:34:40,461 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 77 [2024-11-27 20:34:40,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 254 transitions, 1608 flow. Second operand has 11 states, 11 states have (on average 19.818181818181817) internal successors, (218), 11 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:40,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:40,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 77 [2024-11-27 20:34:40,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:41,831 INFO L124 PetriNetUnfolderBase]: 2941/6077 cut-off events. [2024-11-27 20:34:41,831 INFO L125 PetriNetUnfolderBase]: For 5771/5771 co-relation queries the response was YES. [2024-11-27 20:34:41,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17852 conditions, 6077 events. 2941/6077 cut-off events. For 5771/5771 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 47004 event pairs, 2000 based on Foata normal form. 4/5388 useless extension candidates. Maximal degree in co-relation 17718. Up to 2944 conditions per place. [2024-11-27 20:34:41,862 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 319 selfloop transitions, 79 changer transitions 0/412 dead transitions. [2024-11-27 20:34:41,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 412 transitions, 3469 flow [2024-11-27 20:34:41,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:34:41,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-27 20:34:41,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 284 transitions. [2024-11-27 20:34:41,864 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33530106257378983 [2024-11-27 20:34:41,864 INFO L175 Difference]: Start difference. First operand has 131 places, 254 transitions, 1608 flow. Second operand 11 states and 284 transitions. [2024-11-27 20:34:41,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 412 transitions, 3469 flow [2024-11-27 20:34:41,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 412 transitions, 3397 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-27 20:34:41,924 INFO L231 Difference]: Finished difference. Result has 134 places, 278 transitions, 1884 flow [2024-11-27 20:34:41,925 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1556, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1884, PETRI_PLACES=134, PETRI_TRANSITIONS=278} [2024-11-27 20:34:41,925 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 61 predicate places. [2024-11-27 20:34:41,926 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 278 transitions, 1884 flow [2024-11-27 20:34:41,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.818181818181817) internal successors, (218), 11 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:41,926 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:41,926 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:41,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-27 20:34:42,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-27 20:34:42,131 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:34:42,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:42,132 INFO L85 PathProgramCache]: Analyzing trace with hash 97979488, now seen corresponding path program 1 times [2024-11-27 20:34:42,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:42,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409670123] [2024-11-27 20:34:42,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:42,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:42,262 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-27 20:34:42,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:42,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409670123] [2024-11-27 20:34:42,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409670123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:42,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935700374] [2024-11-27 20:34:42,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:42,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:42,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:42,265 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:42,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 20:34:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:42,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:34:42,473 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:42,605 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-27 20:34:42,605 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:34:42,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935700374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:42,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:34:42,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-27 20:34:42,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501137024] [2024-11-27 20:34:42,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:42,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:34:42,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:42,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:34:42,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:34:42,618 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-27 20:34:42,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 278 transitions, 1884 flow. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:42,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:42,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-27 20:34:42,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:44,247 INFO L124 PetriNetUnfolderBase]: 3668/6905 cut-off events. [2024-11-27 20:34:44,247 INFO L125 PetriNetUnfolderBase]: For 6506/6684 co-relation queries the response was YES. [2024-11-27 20:34:44,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20510 conditions, 6905 events. 3668/6905 cut-off events. For 6506/6684 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 47902 event pairs, 850 based on Foata normal form. 3/6012 useless extension candidates. Maximal degree in co-relation 19254. Up to 3156 conditions per place. [2024-11-27 20:34:44,292 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 270 selfloop transitions, 7 changer transitions 0/294 dead transitions. [2024-11-27 20:34:44,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 294 transitions, 2496 flow [2024-11-27 20:34:44,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:34:44,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:34:44,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 172 transitions. [2024-11-27 20:34:44,293 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5584415584415584 [2024-11-27 20:34:44,293 INFO L175 Difference]: Start difference. First operand has 134 places, 278 transitions, 1884 flow. Second operand 4 states and 172 transitions. [2024-11-27 20:34:44,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 294 transitions, 2496 flow [2024-11-27 20:34:44,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 294 transitions, 2467 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-27 20:34:44,365 INFO L231 Difference]: Finished difference. Result has 134 places, 281 transitions, 1910 flow [2024-11-27 20:34:44,366 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1847, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1910, PETRI_PLACES=134, PETRI_TRANSITIONS=281} [2024-11-27 20:34:44,366 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 61 predicate places. [2024-11-27 20:34:44,366 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 281 transitions, 1910 flow [2024-11-27 20:34:44,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:44,367 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:44,367 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:44,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-27 20:34:44,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:44,568 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:34:44,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:44,568 INFO L85 PathProgramCache]: Analyzing trace with hash 97979495, now seen corresponding path program 1 times [2024-11-27 20:34:44,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:44,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767720819] [2024-11-27 20:34:44,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:44,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:44,759 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-27 20:34:44,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:44,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767720819] [2024-11-27 20:34:44,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767720819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:44,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929946347] [2024-11-27 20:34:44,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:44,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:44,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:44,762 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:44,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 20:34:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:45,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:34:45,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:45,056 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-27 20:34:45,056 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:34:45,114 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-27 20:34:45,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929946347] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:34:45,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:34:45,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-27 20:34:45,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708610340] [2024-11-27 20:34:45,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:34:45,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:34:45,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:45,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:34:45,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:34:45,131 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-27 20:34:45,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 281 transitions, 1910 flow. Second operand has 7 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:45,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:45,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-27 20:34:45,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:47,796 INFO L124 PetriNetUnfolderBase]: 8428/14141 cut-off events. [2024-11-27 20:34:47,796 INFO L125 PetriNetUnfolderBase]: For 26624/27230 co-relation queries the response was YES. [2024-11-27 20:34:47,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44479 conditions, 14141 events. 8428/14141 cut-off events. For 26624/27230 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 100389 event pairs, 1062 based on Foata normal form. 250/13849 useless extension candidates. Maximal degree in co-relation 43223. Up to 3655 conditions per place. [2024-11-27 20:34:47,907 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 318 selfloop transitions, 9 changer transitions 2/346 dead transitions. [2024-11-27 20:34:47,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 346 transitions, 2834 flow [2024-11-27 20:34:47,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:34:47,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 20:34:47,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 278 transitions. [2024-11-27 20:34:47,909 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6017316017316018 [2024-11-27 20:34:47,909 INFO L175 Difference]: Start difference. First operand has 134 places, 281 transitions, 1910 flow. Second operand 6 states and 278 transitions. [2024-11-27 20:34:47,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 346 transitions, 2834 flow [2024-11-27 20:34:47,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 346 transitions, 2805 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-11-27 20:34:47,981 INFO L231 Difference]: Finished difference. Result has 142 places, 288 transitions, 2009 flow [2024-11-27 20:34:47,982 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1899, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2009, PETRI_PLACES=142, PETRI_TRANSITIONS=288} [2024-11-27 20:34:47,982 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 69 predicate places. [2024-11-27 20:34:47,982 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 288 transitions, 2009 flow [2024-11-27 20:34:47,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:47,983 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:47,983 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:47,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 20:34:48,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:48,187 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:34:48,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:48,187 INFO L85 PathProgramCache]: Analyzing trace with hash 97979489, now seen corresponding path program 1 times [2024-11-27 20:34:48,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:48,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266662266] [2024-11-27 20:34:48,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:48,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:48,460 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-27 20:34:48,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:48,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266662266] [2024-11-27 20:34:48,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266662266] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:48,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756193474] [2024-11-27 20:34:48,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:48,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:48,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:48,463 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:48,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 20:34:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:48,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:34:48,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:48,779 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-27 20:34:48,779 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:34:48,851 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-27 20:34:48,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756193474] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:34:48,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:34:48,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 2, 2] total 6 [2024-11-27 20:34:48,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874294756] [2024-11-27 20:34:48,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:34:48,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:34:48,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:48,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:34:48,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:34:48,871 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-27 20:34:48,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 288 transitions, 2009 flow. Second operand has 7 states, 7 states have (on average 32.857142857142854) internal successors, (230), 7 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:48,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:48,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-27 20:34:48,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:51,312 INFO L124 PetriNetUnfolderBase]: 6238/12609 cut-off events. [2024-11-27 20:34:51,312 INFO L125 PetriNetUnfolderBase]: For 33720/34136 co-relation queries the response was YES. [2024-11-27 20:34:51,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38622 conditions, 12609 events. 6238/12609 cut-off events. For 33720/34136 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 102490 event pairs, 3656 based on Foata normal form. 1544/14046 useless extension candidates. Maximal degree in co-relation 36408. Up to 8738 conditions per place. [2024-11-27 20:34:51,387 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 360 selfloop transitions, 16 changer transitions 18/411 dead transitions. [2024-11-27 20:34:51,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 411 transitions, 3648 flow [2024-11-27 20:34:51,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:34:51,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:34:51,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 202 transitions. [2024-11-27 20:34:51,389 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5246753246753246 [2024-11-27 20:34:51,389 INFO L175 Difference]: Start difference. First operand has 142 places, 288 transitions, 2009 flow. Second operand 5 states and 202 transitions. [2024-11-27 20:34:51,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 411 transitions, 3648 flow [2024-11-27 20:34:51,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 411 transitions, 3642 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-27 20:34:51,508 INFO L231 Difference]: Finished difference. Result has 143 places, 281 transitions, 1987 flow [2024-11-27 20:34:51,508 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1955, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1987, PETRI_PLACES=143, PETRI_TRANSITIONS=281} [2024-11-27 20:34:51,509 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 70 predicate places. [2024-11-27 20:34:51,509 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 281 transitions, 1987 flow [2024-11-27 20:34:51,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.857142857142854) internal successors, (230), 7 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:51,509 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:51,509 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:51,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-27 20:34:51,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-27 20:34:51,709 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:34:51,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:51,710 INFO L85 PathProgramCache]: Analyzing trace with hash -464471683, now seen corresponding path program 2 times [2024-11-27 20:34:51,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:51,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925135575] [2024-11-27 20:34:51,710 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:34:51,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:51,754 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:34:51,754 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:51,889 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-27 20:34:51,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:51,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925135575] [2024-11-27 20:34:51,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925135575] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:51,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583886096] [2024-11-27 20:34:51,890 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:34:51,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:51,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:51,893 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:51,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 20:34:52,199 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:34:52,200 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:52,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:34:52,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:52,255 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-27 20:34:52,255 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:34:52,316 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-27 20:34:52,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583886096] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:34:52,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:34:52,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-27 20:34:52,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017302149] [2024-11-27 20:34:52,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:34:52,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:34:52,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:52,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:34:52,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:34:52,327 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-11-27 20:34:52,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 281 transitions, 1987 flow. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:52,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:52,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-11-27 20:34:52,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:54,625 INFO L124 PetriNetUnfolderBase]: 4316/9463 cut-off events. [2024-11-27 20:34:54,625 INFO L125 PetriNetUnfolderBase]: For 20246/20390 co-relation queries the response was YES. [2024-11-27 20:34:54,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30314 conditions, 9463 events. 4316/9463 cut-off events. For 20246/20390 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 75648 event pairs, 2232 based on Foata normal form. 28/9393 useless extension candidates. Maximal degree in co-relation 28097. Up to 5722 conditions per place. [2024-11-27 20:34:54,698 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 193 selfloop transitions, 72 changer transitions 0/281 dead transitions. [2024-11-27 20:34:54,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 281 transitions, 2511 flow [2024-11-27 20:34:54,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:34:54,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:34:54,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2024-11-27 20:34:54,700 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43116883116883115 [2024-11-27 20:34:54,700 INFO L175 Difference]: Start difference. First operand has 143 places, 281 transitions, 1987 flow. Second operand 5 states and 166 transitions. [2024-11-27 20:34:54,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 281 transitions, 2511 flow [2024-11-27 20:34:55,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 281 transitions, 2447 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-11-27 20:34:55,016 INFO L231 Difference]: Finished difference. Result has 139 places, 281 transitions, 2080 flow [2024-11-27 20:34:55,017 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1913, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2080, PETRI_PLACES=139, PETRI_TRANSITIONS=281} [2024-11-27 20:34:55,017 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 66 predicate places. [2024-11-27 20:34:55,017 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 281 transitions, 2080 flow [2024-11-27 20:34:55,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:55,017 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:55,017 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 1, 1, 1] [2024-11-27 20:34:55,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-27 20:34:55,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-27 20:34:55,218 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:34:55,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:55,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1003577621, now seen corresponding path program 2 times [2024-11-27 20:34:55,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:55,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897167122] [2024-11-27 20:34:55,219 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:34:55,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:55,256 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:34:55,260 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:55,370 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-27 20:34:55,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:55,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897167122] [2024-11-27 20:34:55,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897167122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:55,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076812882] [2024-11-27 20:34:55,371 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:34:55,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:55,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:55,374 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:55,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-27 20:34:55,624 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:34:55,624 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:55,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:34:55,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:55,696 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-27 20:34:55,697 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:34:55,766 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-27 20:34:55,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076812882] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:34:55,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:34:55,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-27 20:34:55,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277433523] [2024-11-27 20:34:55,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:34:55,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:34:55,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:55,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:34:55,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:34:55,797 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-11-27 20:34:55,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 281 transitions, 2080 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:55,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:55,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-11-27 20:34:55,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:57,625 INFO L124 PetriNetUnfolderBase]: 4316/9461 cut-off events. [2024-11-27 20:34:57,625 INFO L125 PetriNetUnfolderBase]: For 21368/21512 co-relation queries the response was YES. [2024-11-27 20:34:57,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31201 conditions, 9461 events. 4316/9461 cut-off events. For 21368/21512 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 75760 event pairs, 2232 based on Foata normal form. 18/9379 useless extension candidates. Maximal degree in co-relation 28883. Up to 7786 conditions per place. [2024-11-27 20:34:57,677 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 211 selfloop transitions, 56 changer transitions 0/280 dead transitions. [2024-11-27 20:34:57,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 280 transitions, 2592 flow [2024-11-27 20:34:57,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:34:57,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:34:57,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-11-27 20:34:57,678 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35324675324675325 [2024-11-27 20:34:57,680 INFO L175 Difference]: Start difference. First operand has 139 places, 281 transitions, 2080 flow. Second operand 5 states and 136 transitions. [2024-11-27 20:34:57,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 280 transitions, 2592 flow [2024-11-27 20:34:57,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 280 transitions, 2465 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 20:34:57,757 INFO L231 Difference]: Finished difference. Result has 139 places, 280 transitions, 2043 flow [2024-11-27 20:34:57,757 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1931, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2043, PETRI_PLACES=139, PETRI_TRANSITIONS=280} [2024-11-27 20:34:57,758 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 66 predicate places. [2024-11-27 20:34:57,758 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 280 transitions, 2043 flow [2024-11-27 20:34:57,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:57,758 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:57,758 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 1, 1, 1, 1] [2024-11-27 20:34:57,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-27 20:34:57,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-27 20:34:57,958 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:34:57,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:57,959 INFO L85 PathProgramCache]: Analyzing trace with hash 2091944621, now seen corresponding path program 1 times [2024-11-27 20:34:57,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:57,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651948541] [2024-11-27 20:34:57,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:57,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:58,590 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:34:58,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:58,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651948541] [2024-11-27 20:34:58,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651948541] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:58,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057151722] [2024-11-27 20:34:58,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:58,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:58,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:58,594 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:58,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-27 20:34:58,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:58,852 INFO L256 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-27 20:34:58,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:58,967 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:34:58,967 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:34:59,747 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:34:59,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057151722] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:34:59,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:34:59,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2024-11-27 20:34:59,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286371931] [2024-11-27 20:34:59,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:34:59,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-27 20:34:59,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:59,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-27 20:34:59,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2024-11-27 20:34:59,952 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-11-27 20:34:59,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 280 transitions, 2043 flow. Second operand has 48 states, 48 states have (on average 21.0625) internal successors, (1011), 48 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:59,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:59,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-11-27 20:34:59,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:35:03,465 INFO L124 PetriNetUnfolderBase]: 5144/12773 cut-off events. [2024-11-27 20:35:03,465 INFO L125 PetriNetUnfolderBase]: For 67177/67321 co-relation queries the response was YES. [2024-11-27 20:35:03,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41250 conditions, 12773 events. 5144/12773 cut-off events. For 67177/67321 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 105247 event pairs, 2232 based on Foata normal form. 808/13457 useless extension candidates. Maximal degree in co-relation 30488. Up to 7252 conditions per place. [2024-11-27 20:35:03,557 INFO L140 encePairwiseOnDemand]: 61/77 looper letters, 84 selfloop transitions, 399 changer transitions 0/496 dead transitions. [2024-11-27 20:35:03,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 496 transitions, 4569 flow [2024-11-27 20:35:03,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-27 20:35:03,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-11-27 20:35:03,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 1243 transitions. [2024-11-27 20:35:03,562 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35093167701863354 [2024-11-27 20:35:03,562 INFO L175 Difference]: Start difference. First operand has 139 places, 280 transitions, 2043 flow. Second operand 46 states and 1243 transitions. [2024-11-27 20:35:03,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 496 transitions, 4569 flow [2024-11-27 20:35:03,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 496 transitions, 4360 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 20:35:03,683 INFO L231 Difference]: Finished difference. Result has 193 places, 496 transitions, 4368 flow [2024-11-27 20:35:03,683 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1942, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=4368, PETRI_PLACES=193, PETRI_TRANSITIONS=496} [2024-11-27 20:35:03,684 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 120 predicate places. [2024-11-27 20:35:03,684 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 496 transitions, 4368 flow [2024-11-27 20:35:03,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 21.0625) internal successors, (1011), 48 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:35:03,684 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:35:03,685 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:35:03,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-27 20:35:03,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:35:03,885 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:35:03,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:35:03,886 INFO L85 PathProgramCache]: Analyzing trace with hash 152373559, now seen corresponding path program 1 times [2024-11-27 20:35:03,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:35:03,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337918916] [2024-11-27 20:35:03,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:35:03,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:35:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:35:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 20:35:04,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:35:04,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337918916] [2024-11-27 20:35:04,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337918916] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:35:04,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553095829] [2024-11-27 20:35:04,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:35:04,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:35:04,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:35:04,100 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:35:04,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-27 20:35:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:35:04,374 INFO L256 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 20:35:04,376 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:35:04,446 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 20:35:04,446 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:35:04,577 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 20:35:04,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553095829] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:35:04,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:35:04,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-27 20:35:04,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210602901] [2024-11-27 20:35:04,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:35:04,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 20:35:04,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:35:04,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 20:35:04,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:35:04,615 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-27 20:35:04,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 496 transitions, 4368 flow. Second operand has 13 states, 13 states have (on average 33.53846153846154) internal successors, (436), 13 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:35:04,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:35:04,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-27 20:35:04,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:35:10,453 INFO L124 PetriNetUnfolderBase]: 12206/24089 cut-off events. [2024-11-27 20:35:10,453 INFO L125 PetriNetUnfolderBase]: For 75705/76145 co-relation queries the response was YES. [2024-11-27 20:35:10,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82252 conditions, 24089 events. 12206/24089 cut-off events. For 75705/76145 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 195314 event pairs, 900 based on Foata normal form. 1103/24946 useless extension candidates. Maximal degree in co-relation 78840. Up to 6714 conditions per place. [2024-11-27 20:35:10,646 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 574 selfloop transitions, 46 changer transitions 0/635 dead transitions. [2024-11-27 20:35:10,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 635 transitions, 6288 flow [2024-11-27 20:35:10,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 20:35:10,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-27 20:35:10,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 499 transitions. [2024-11-27 20:35:10,649 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.54004329004329 [2024-11-27 20:35:10,649 INFO L175 Difference]: Start difference. First operand has 193 places, 496 transitions, 4368 flow. Second operand 12 states and 499 transitions. [2024-11-27 20:35:10,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 635 transitions, 6288 flow [2024-11-27 20:35:11,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 635 transitions, 5362 flow, removed 256 selfloop flow, removed 21 redundant places. [2024-11-27 20:35:11,020 INFO L231 Difference]: Finished difference. Result has 193 places, 535 transitions, 4040 flow [2024-11-27 20:35:11,021 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=3442, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4040, PETRI_PLACES=193, PETRI_TRANSITIONS=535} [2024-11-27 20:35:11,021 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 120 predicate places. [2024-11-27 20:35:11,021 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 535 transitions, 4040 flow [2024-11-27 20:35:11,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 33.53846153846154) internal successors, (436), 13 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:35:11,022 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:35:11,022 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:35:11,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-27 20:35:11,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-27 20:35:11,222 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:35:11,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:35:11,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1049297593, now seen corresponding path program 2 times [2024-11-27 20:35:11,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:35:11,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977847840] [2024-11-27 20:35:11,223 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:35:11,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:35:11,282 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:35:11,283 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:35:11,760 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 4 proven. 200 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 20:35:11,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:35:11,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977847840] [2024-11-27 20:35:11,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977847840] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:35:11,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012621699] [2024-11-27 20:35:11,761 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:35:11,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:35:11,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:35:11,763 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:35:11,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-27 20:35:12,077 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:35:12,077 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:35:12,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 20:35:12,082 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:35:12,205 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 4 proven. 200 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 20:35:12,205 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:35:12,567 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 4 proven. 200 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 20:35:12,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012621699] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:35:12,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:35:12,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-27 20:35:12,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3051318] [2024-11-27 20:35:12,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:35:12,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-27 20:35:12,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:35:12,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-27 20:35:12,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-27 20:35:12,644 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-27 20:35:12,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 535 transitions, 4040 flow. Second operand has 25 states, 25 states have (on average 32.32) internal successors, (808), 25 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:35:12,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:35:12,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-27 20:35:12,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:35:29,070 INFO L124 PetriNetUnfolderBase]: 36194/62061 cut-off events. [2024-11-27 20:35:29,071 INFO L125 PetriNetUnfolderBase]: For 404835/405541 co-relation queries the response was YES. [2024-11-27 20:35:29,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212628 conditions, 62061 events. 36194/62061 cut-off events. For 404835/405541 co-relation queries the response was YES. Maximal size of possible extension queue 848. Compared 490412 event pairs, 2338 based on Foata normal form. 2291/63388 useless extension candidates. Maximal degree in co-relation 209620. Up to 11927 conditions per place. [2024-11-27 20:35:29,748 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 694 selfloop transitions, 206 changer transitions 0/915 dead transitions. [2024-11-27 20:35:29,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 915 transitions, 8505 flow [2024-11-27 20:35:29,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-27 20:35:29,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-27 20:35:29,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 991 transitions. [2024-11-27 20:35:29,751 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5362554112554112 [2024-11-27 20:35:29,751 INFO L175 Difference]: Start difference. First operand has 193 places, 535 transitions, 4040 flow. Second operand 24 states and 991 transitions. [2024-11-27 20:35:29,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 915 transitions, 8505 flow [2024-11-27 20:35:30,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 915 transitions, 8035 flow, removed 235 selfloop flow, removed 0 redundant places. [2024-11-27 20:35:30,561 INFO L231 Difference]: Finished difference. Result has 238 places, 695 transitions, 6469 flow [2024-11-27 20:35:30,562 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=3938, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=6469, PETRI_PLACES=238, PETRI_TRANSITIONS=695} [2024-11-27 20:35:30,562 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 165 predicate places. [2024-11-27 20:35:30,562 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 695 transitions, 6469 flow [2024-11-27 20:35:30,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 32.32) internal successors, (808), 25 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:35:30,563 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:35:30,563 INFO L206 CegarLoopForPetriNet]: trace histogram [23, 23, 22, 1, 1, 1, 1] [2024-11-27 20:35:30,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-27 20:35:30,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-27 20:35:30,763 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-27 20:35:30,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:35:30,764 INFO L85 PathProgramCache]: Analyzing trace with hash 417909101, now seen corresponding path program 2 times [2024-11-27 20:35:30,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:35:30,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612128599] [2024-11-27 20:35:30,764 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:35:30,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:35:30,808 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:35:30,808 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:35:30,966 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 1 proven. 44 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-11-27 20:35:30,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:35:30,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612128599] [2024-11-27 20:35:30,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612128599] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:35:30,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934521092] [2024-11-27 20:35:30,967 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:35:30,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:35:30,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:35:30,970 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:35:30,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f33370d-caaf-47ec-9bc1-7bc47edb9006/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-27 20:35:31,339 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:35:31,339 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:35:31,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:35:31,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:35:31,463 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 1 proven. 44 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-11-27 20:35:31,463 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:35:31,607 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 1 proven. 44 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-11-27 20:35:31,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934521092] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:35:31,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:35:31,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-27 20:35:31,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929231] [2024-11-27 20:35:31,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:35:31,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:35:31,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:35:31,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:35:31,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:35:31,645 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-11-27 20:35:31,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 695 transitions, 6469 flow. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:35:31,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:35:31,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-11-27 20:35:31,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand