./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd --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 8c3fe688d0e9a9929009fc24c8ef56c8fc1bfa15613131b287e178eb7d2f1f1e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:56:23,646 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:56:23,735 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-13 15:56:23,746 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:56:23,746 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:56:23,795 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:56:23,796 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:56:23,797 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:56:23,797 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:56:23,797 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:56:23,798 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:56:23,798 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:56:23,799 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:56:23,799 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:56:23,799 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:56:23,799 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:56:23,799 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:56:23,799 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:56:23,800 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:56:23,800 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:56:23,800 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:56:23,800 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:56:23,802 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:56:23,802 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:56:23,802 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:56:23,802 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-13 15:56:23,802 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 15:56:23,802 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:56:23,802 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:56:23,803 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:56:23,803 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:56:23,803 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:56:23,803 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:56:23,803 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:56:23,803 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:56:23,804 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:56:23,804 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:56:23,805 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:56:23,805 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:56:23,805 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:56:23,805 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:56:23,805 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:56:23,805 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:56:23,805 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:56:23,805 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_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! 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 -> 8c3fe688d0e9a9929009fc24c8ef56c8fc1bfa15613131b287e178eb7d2f1f1e [2024-11-13 15:56:24,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:56:24,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:56:24,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:56:24,132 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:56:24,132 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:56:24,133 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c Unable to find full path for "g++" [2024-11-13 15:56:26,401 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:56:26,639 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:56:26,640 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2024-11-13 15:56:26,652 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/data/a8dc9143e/274a311adeee4bea8521c99e7e6fd2a8/FLAG6a1f8f5ab [2024-11-13 15:56:26,667 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/data/a8dc9143e/274a311adeee4bea8521c99e7e6fd2a8 [2024-11-13 15:56:26,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:56:26,671 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:56:26,675 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:56:26,675 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:56:26,681 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:56:26,682 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:56:26" (1/1) ... [2024-11-13 15:56:26,683 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43e2b6ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:56:26, skipping insertion in model container [2024-11-13 15:56:26,683 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:56:26" (1/1) ... [2024-11-13 15:56:26,705 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:56:26,953 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:56:26,968 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:56:27,009 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:56:27,028 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:56:27,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:56:27 WrapperNode [2024-11-13 15:56:27,029 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:56:27,030 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:56:27,030 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:56:27,030 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:56:27,038 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:56:27" (1/1) ... [2024-11-13 15:56:27,044 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:56:27" (1/1) ... [2024-11-13 15:56:27,066 INFO L138 Inliner]: procedures = 23, calls = 30, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 160 [2024-11-13 15:56:27,066 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:56:27,067 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:56:27,067 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:56:27,067 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:56:27,077 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:56:27" (1/1) ... [2024-11-13 15:56:27,077 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:56:27" (1/1) ... [2024-11-13 15:56:27,080 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:56:27" (1/1) ... [2024-11-13 15:56:27,100 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-13 15:56:27,101 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:56:27" (1/1) ... [2024-11-13 15:56:27,101 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:56:27" (1/1) ... [2024-11-13 15:56:27,116 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:56:27" (1/1) ... [2024-11-13 15:56:27,123 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:56:27" (1/1) ... [2024-11-13 15:56:27,125 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:56:27" (1/1) ... [2024-11-13 15:56:27,126 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:56:27" (1/1) ... [2024-11-13 15:56:27,128 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:56:27,129 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:56:27,129 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:56:27,129 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:56:27,130 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:56:27" (1/1) ... [2024-11-13 15:56:27,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:56:27,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:56:27,172 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:56:27,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:56:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:56:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 15:56:27,206 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 15:56:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 15:56:27,206 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 15:56:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:56:27,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 15:56:27,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 15:56:27,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 15:56:27,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-13 15:56:27,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-13 15:56:27,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 15:56:27,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:56:27,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:56:27,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 15:56:27,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 15:56:27,209 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 15:56:27,332 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:56:27,335 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:56:27,688 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 15:56:27,688 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:56:28,065 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:56:28,066 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-13 15:56:28,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:56:28 BoogieIcfgContainer [2024-11-13 15:56:28,066 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:56:28,070 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:56:28,070 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:56:28,076 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:56:28,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:56:26" (1/3) ... [2024-11-13 15:56:28,078 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@683b23ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:56:28, skipping insertion in model container [2024-11-13 15:56:28,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:56:27" (2/3) ... [2024-11-13 15:56:28,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@683b23ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:56:28, skipping insertion in model container [2024-11-13 15:56:28,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:56:28" (3/3) ... [2024-11-13 15:56:28,080 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-2.wvr.c [2024-11-13 15:56:28,098 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:56:28,100 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-queue-add-2.wvr.c that has 3 procedures, 41 locations, 1 initial locations, 3 loop locations, and 12 error locations. [2024-11-13 15:56:28,100 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 15:56:28,174 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-13 15:56:28,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 44 transitions, 102 flow [2024-11-13 15:56:28,276 INFO L124 PetriNetUnfolderBase]: 4/42 cut-off events. [2024-11-13 15:56:28,283 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 15:56:28,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 42 events. 4/42 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 100 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-13 15:56:28,291 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 44 transitions, 102 flow [2024-11-13 15:56:28,296 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 40 transitions, 89 flow [2024-11-13 15:56:28,313 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:56:28,336 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;@615435c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:56:28,337 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2024-11-13 15:56:28,348 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 15:56:28,348 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-13 15:56:28,349 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 15:56:28,349 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:56:28,350 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 15:56:28,350 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:56:28,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:56:28,356 INFO L85 PathProgramCache]: Analyzing trace with hash 514246, now seen corresponding path program 1 times [2024-11-13 15:56:28,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:56:28,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507881556] [2024-11-13 15:56:28,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:28,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:56:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:28,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:56:28,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:56:28,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507881556] [2024-11-13 15:56:28,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507881556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:56:28,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:56:28,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:56:28,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518176880] [2024-11-13 15:56:28,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:56:28,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:56:28,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:56:28,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:56:28,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:56:28,754 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-11-13 15:56:28,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 89 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:28,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:56:28,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-11-13 15:56:28,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:56:29,041 INFO L124 PetriNetUnfolderBase]: 165/363 cut-off events. [2024-11-13 15:56:29,041 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-13 15:56:29,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 664 conditions, 363 events. 165/363 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1720 event pairs, 136 based on Foata normal form. 18/296 useless extension candidates. Maximal degree in co-relation 617. Up to 270 conditions per place. [2024-11-13 15:56:29,051 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 19 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2024-11-13 15:56:29,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 125 flow [2024-11-13 15:56:29,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:56:29,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:56:29,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-11-13 15:56:29,072 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-11-13 15:56:29,076 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 89 flow. Second operand 4 states and 84 transitions. [2024-11-13 15:56:29,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 125 flow [2024-11-13 15:56:29,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 120 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 15:56:29,090 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 82 flow [2024-11-13 15:56:29,093 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2024-11-13 15:56:29,098 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -4 predicate places. [2024-11-13 15:56:29,098 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 82 flow [2024-11-13 15:56:29,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:29,098 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:56:29,098 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-13 15:56:29,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:56:29,099 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:56:29,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:56:29,101 INFO L85 PathProgramCache]: Analyzing trace with hash 15942140, now seen corresponding path program 1 times [2024-11-13 15:56:29,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:56:29,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702634769] [2024-11-13 15:56:29,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:29,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:56:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:29,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:56:29,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:56:29,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702634769] [2024-11-13 15:56:29,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702634769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:56:29,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:56:29,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:56:29,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294584224] [2024-11-13 15:56:29,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:56:29,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:56:29,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:56:29,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:56:29,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:56:29,268 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-11-13 15:56:29,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:29,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:56:29,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-11-13 15:56:29,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:56:29,518 INFO L124 PetriNetUnfolderBase]: 166/367 cut-off events. [2024-11-13 15:56:29,518 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 15:56:29,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 670 conditions, 367 events. 166/367 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1732 event pairs, 136 based on Foata normal form. 1/283 useless extension candidates. Maximal degree in co-relation 642. Up to 275 conditions per place. [2024-11-13 15:56:29,523 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 22 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2024-11-13 15:56:29,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 38 transitions, 146 flow [2024-11-13 15:56:29,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:56:29,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:56:29,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2024-11-13 15:56:29,525 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4715909090909091 [2024-11-13 15:56:29,525 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 82 flow. Second operand 4 states and 83 transitions. [2024-11-13 15:56:29,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 38 transitions, 146 flow [2024-11-13 15:56:29,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 38 transitions, 132 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 15:56:29,528 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 101 flow [2024-11-13 15:56:29,528 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=101, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2024-11-13 15:56:29,529 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -2 predicate places. [2024-11-13 15:56:29,529 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 101 flow [2024-11-13 15:56:29,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:29,530 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:56:29,530 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 15:56:29,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:56:29,530 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:56:29,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:56:29,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1856437339, now seen corresponding path program 1 times [2024-11-13 15:56:29,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:56:29,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548103507] [2024-11-13 15:56:29,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:29,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:56:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:29,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:56:29,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:56:29,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548103507] [2024-11-13 15:56:29,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548103507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:56:29,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:56:29,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:56:29,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888577656] [2024-11-13 15:56:29,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:56:29,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:56:29,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:56:29,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:56:29,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:56:29,825 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2024-11-13 15:56:29,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:29,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:56:29,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2024-11-13 15:56:29,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:56:29,986 INFO L124 PetriNetUnfolderBase]: 178/405 cut-off events. [2024-11-13 15:56:29,986 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 15:56:29,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 751 conditions, 405 events. 178/405 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1880 event pairs, 149 based on Foata normal form. 17/341 useless extension candidates. Maximal degree in co-relation 654. Up to 273 conditions per place. [2024-11-13 15:56:29,990 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 22 selfloop transitions, 2 changer transitions 8/45 dead transitions. [2024-11-13 15:56:29,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 45 transitions, 182 flow [2024-11-13 15:56:29,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:56:29,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:56:29,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-11-13 15:56:29,992 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5795454545454546 [2024-11-13 15:56:29,992 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 101 flow. Second operand 4 states and 102 transitions. [2024-11-13 15:56:29,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 45 transitions, 182 flow [2024-11-13 15:56:29,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 45 transitions, 179 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:56:29,994 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 110 flow [2024-11-13 15:56:29,994 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-11-13 15:56:29,995 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-11-13 15:56:29,995 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 110 flow [2024-11-13 15:56:29,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:29,996 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:56:29,996 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-13 15:56:29,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 15:56:29,996 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:56:29,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:56:29,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1808566714, now seen corresponding path program 1 times [2024-11-13 15:56:29,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:56:29,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211033454] [2024-11-13 15:56:29,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:29,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:56:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:30,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:56:30,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:56:30,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211033454] [2024-11-13 15:56:30,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211033454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:56:30,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109463997] [2024-11-13 15:56:30,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:30,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:56:30,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:56:30,091 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:56:30,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:56:30,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:30,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 15:56:30,174 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:56:30,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:56:30,240 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:56:30,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:56:30,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109463997] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:56:30,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:56:30,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-13 15:56:30,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692651554] [2024-11-13 15:56:30,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:56:30,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 15:56:30,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:56:30,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 15:56:30,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:56:30,347 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-11-13 15:56:30,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 110 flow. Second operand has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:30,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:56:30,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-11-13 15:56:30,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:56:30,668 INFO L124 PetriNetUnfolderBase]: 168/378 cut-off events. [2024-11-13 15:56:30,668 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-11-13 15:56:30,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 794 conditions, 378 events. 168/378 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1803 event pairs, 136 based on Foata normal form. 0/290 useless extension candidates. Maximal degree in co-relation 775. Up to 277 conditions per place. [2024-11-13 15:56:30,674 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 22 selfloop transitions, 12 changer transitions 0/46 dead transitions. [2024-11-13 15:56:30,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 46 transitions, 214 flow [2024-11-13 15:56:30,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:56:30,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 15:56:30,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-11-13 15:56:30,679 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4022727272727273 [2024-11-13 15:56:30,680 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 110 flow. Second operand 10 states and 177 transitions. [2024-11-13 15:56:30,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 46 transitions, 214 flow [2024-11-13 15:56:30,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:56:30,684 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 184 flow [2024-11-13 15:56:30,685 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=184, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-11-13 15:56:30,686 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-11-13 15:56:30,687 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 184 flow [2024-11-13 15:56:30,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:30,687 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:56:30,687 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:56:30,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:56:30,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:56:30,888 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:56:30,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:56:30,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1432178031, now seen corresponding path program 1 times [2024-11-13 15:56:30,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:56:30,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238252557] [2024-11-13 15:56:30,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:30,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:56:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:31,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:56:31,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:56:31,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238252557] [2024-11-13 15:56:31,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238252557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:56:31,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117919334] [2024-11-13 15:56:31,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:31,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:56:31,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:56:31,234 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:56:31,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:56:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:31,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:56:31,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:56:31,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:56:31,394 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:56:31,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117919334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:56:31,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:56:31,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-13 15:56:31,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245886734] [2024-11-13 15:56:31,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:56:31,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:56:31,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:56:31,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:56:31,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:56:31,397 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2024-11-13 15:56:31,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:31,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:56:31,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2024-11-13 15:56:31,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:56:31,506 INFO L124 PetriNetUnfolderBase]: 109/258 cut-off events. [2024-11-13 15:56:31,506 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-11-13 15:56:31,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 258 events. 109/258 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1067 event pairs, 83 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 505. Up to 187 conditions per place. [2024-11-13 15:56:31,512 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 29 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2024-11-13 15:56:31,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 43 transitions, 232 flow [2024-11-13 15:56:31,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:56:31,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:56:31,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-11-13 15:56:31,516 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303 [2024-11-13 15:56:31,516 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 184 flow. Second operand 3 states and 70 transitions. [2024-11-13 15:56:31,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 43 transitions, 232 flow [2024-11-13 15:56:31,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 204 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-11-13 15:56:31,522 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 146 flow [2024-11-13 15:56:31,523 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2024-11-13 15:56:31,523 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2024-11-13 15:56:31,523 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 146 flow [2024-11-13 15:56:31,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:31,524 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:56:31,524 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:56:31,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 15:56:31,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:56:31,726 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:56:31,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:56:31,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1933570130, now seen corresponding path program 1 times [2024-11-13 15:56:31,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:56:31,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745092099] [2024-11-13 15:56:31,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:31,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:56:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:31,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:56:31,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:56:31,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745092099] [2024-11-13 15:56:31,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745092099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:56:31,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:56:31,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:56:31,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47100777] [2024-11-13 15:56:31,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:56:31,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:56:31,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:56:31,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:56:31,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:56:31,821 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-13 15:56:31,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:31,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:56:31,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-13 15:56:31,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:56:31,996 INFO L124 PetriNetUnfolderBase]: 211/464 cut-off events. [2024-11-13 15:56:31,996 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-11-13 15:56:31,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 945 conditions, 464 events. 211/464 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2195 event pairs, 128 based on Foata normal form. 12/436 useless extension candidates. Maximal degree in co-relation 932. Up to 281 conditions per place. [2024-11-13 15:56:32,000 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 47 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2024-11-13 15:56:32,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 61 transitions, 294 flow [2024-11-13 15:56:32,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:56:32,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:56:32,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-11-13 15:56:32,002 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2024-11-13 15:56:32,002 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 146 flow. Second operand 4 states and 94 transitions. [2024-11-13 15:56:32,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 61 transitions, 294 flow [2024-11-13 15:56:32,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 61 transitions, 293 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:56:32,005 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 174 flow [2024-11-13 15:56:32,006 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-11-13 15:56:32,006 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-11-13 15:56:32,006 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 174 flow [2024-11-13 15:56:32,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:32,007 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:56:32,007 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:56:32,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 15:56:32,007 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:56:32,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:56:32,008 INFO L85 PathProgramCache]: Analyzing trace with hash -876585827, now seen corresponding path program 1 times [2024-11-13 15:56:32,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:56:32,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134408402] [2024-11-13 15:56:32,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:32,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:56:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:32,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:56:32,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:56:32,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134408402] [2024-11-13 15:56:32,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134408402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:56:32,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:56:32,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:56:32,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438917537] [2024-11-13 15:56:32,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:56:32,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:56:32,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:56:32,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:56:32,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:56:32,076 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2024-11-13 15:56:32,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:32,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:56:32,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2024-11-13 15:56:32,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:56:32,174 INFO L124 PetriNetUnfolderBase]: 133/334 cut-off events. [2024-11-13 15:56:32,174 INFO L125 PetriNetUnfolderBase]: For 108/126 co-relation queries the response was YES. [2024-11-13 15:56:32,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 334 events. 133/334 cut-off events. For 108/126 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1550 event pairs, 40 based on Foata normal form. 12/316 useless extension candidates. Maximal degree in co-relation 748. Up to 184 conditions per place. [2024-11-13 15:56:32,177 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 35 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2024-11-13 15:56:32,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 52 transitions, 268 flow [2024-11-13 15:56:32,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:56:32,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:56:32,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-11-13 15:56:32,178 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2024-11-13 15:56:32,179 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 174 flow. Second operand 3 states and 75 transitions. [2024-11-13 15:56:32,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 52 transitions, 268 flow [2024-11-13 15:56:32,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 52 transitions, 265 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:56:32,182 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 194 flow [2024-11-13 15:56:32,182 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2024-11-13 15:56:32,183 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2024-11-13 15:56:32,183 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 194 flow [2024-11-13 15:56:32,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:32,183 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:56:32,183 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:56:32,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 15:56:32,184 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:56:32,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:56:32,184 INFO L85 PathProgramCache]: Analyzing trace with hash -734327893, now seen corresponding path program 1 times [2024-11-13 15:56:32,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:56:32,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449633676] [2024-11-13 15:56:32,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:32,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:56:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:32,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:56:32,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:56:32,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449633676] [2024-11-13 15:56:32,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449633676] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:56:32,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102010500] [2024-11-13 15:56:32,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:32,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:56:32,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:56:32,894 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:56:32,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:56:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:33,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 15:56:33,023 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:56:33,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-13 15:56:33,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-13 15:56:33,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:56:33,882 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:56:34,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-11-13 15:56:34,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2024-11-13 15:56:34,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:56:34,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102010500] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:56:34,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:56:34,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 17 [2024-11-13 15:56:34,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497997544] [2024-11-13 15:56:34,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:56:34,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 15:56:34,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:56:34,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 15:56:34,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-11-13 15:56:34,785 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-11-13 15:56:34,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 194 flow. Second operand has 19 states, 19 states have (on average 11.894736842105264) internal successors, (226), 19 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:34,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:56:34,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-11-13 15:56:34,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:56:36,615 INFO L124 PetriNetUnfolderBase]: 465/993 cut-off events. [2024-11-13 15:56:36,615 INFO L125 PetriNetUnfolderBase]: For 536/591 co-relation queries the response was YES. [2024-11-13 15:56:36,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2510 conditions, 993 events. 465/993 cut-off events. For 536/591 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5544 event pairs, 57 based on Foata normal form. 21/960 useless extension candidates. Maximal degree in co-relation 2493. Up to 289 conditions per place. [2024-11-13 15:56:36,624 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 87 selfloop transitions, 24 changer transitions 0/120 dead transitions. [2024-11-13 15:56:36,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 120 transitions, 679 flow [2024-11-13 15:56:36,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 15:56:36,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-13 15:56:36,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 242 transitions. [2024-11-13 15:56:36,626 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-11-13 15:56:36,626 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 194 flow. Second operand 14 states and 242 transitions. [2024-11-13 15:56:36,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 120 transitions, 679 flow [2024-11-13 15:56:36,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 120 transitions, 630 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-11-13 15:56:36,632 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 305 flow [2024-11-13 15:56:36,632 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=305, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2024-11-13 15:56:36,633 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 27 predicate places. [2024-11-13 15:56:36,633 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 305 flow [2024-11-13 15:56:36,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.894736842105264) internal successors, (226), 19 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:36,634 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:56:36,634 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-13 15:56:36,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 15:56:36,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:56:36,834 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:56:36,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:56:36,835 INFO L85 PathProgramCache]: Analyzing trace with hash 528726396, now seen corresponding path program 2 times [2024-11-13 15:56:36,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:56:36,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690329446] [2024-11-13 15:56:36,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:36,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:56:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:37,030 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:56:37,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:56:37,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690329446] [2024-11-13 15:56:37,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690329446] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:56:37,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734497935] [2024-11-13 15:56:37,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:56:37,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:56:37,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:56:37,033 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:56:37,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:56:37,126 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:56:37,127 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:56:37,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:56:37,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:56:37,194 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 15:56:37,194 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:56:37,237 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 15:56:37,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734497935] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:56:37,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:56:37,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-13 15:56:37,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328653981] [2024-11-13 15:56:37,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:56:37,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 15:56:37,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:56:37,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 15:56:37,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:56:37,264 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-11-13 15:56:37,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 305 flow. Second operand has 14 states, 14 states have (on average 15.142857142857142) internal successors, (212), 14 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:37,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:56:37,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-11-13 15:56:37,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:56:37,641 INFO L124 PetriNetUnfolderBase]: 324/752 cut-off events. [2024-11-13 15:56:37,641 INFO L125 PetriNetUnfolderBase]: For 662/713 co-relation queries the response was YES. [2024-11-13 15:56:37,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2013 conditions, 752 events. 324/752 cut-off events. For 662/713 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4297 event pairs, 212 based on Foata normal form. 14/723 useless extension candidates. Maximal degree in co-relation 1992. Up to 551 conditions per place. [2024-11-13 15:56:37,648 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 29 selfloop transitions, 18 changer transitions 0/61 dead transitions. [2024-11-13 15:56:37,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 61 transitions, 409 flow [2024-11-13 15:56:37,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 15:56:37,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-13 15:56:37,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 231 transitions. [2024-11-13 15:56:37,650 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-11-13 15:56:37,650 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 305 flow. Second operand 14 states and 231 transitions. [2024-11-13 15:56:37,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 61 transitions, 409 flow [2024-11-13 15:56:37,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 61 transitions, 384 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-11-13 15:56:37,661 INFO L231 Difference]: Finished difference. Result has 74 places, 61 transitions, 326 flow [2024-11-13 15:56:37,661 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=326, PETRI_PLACES=74, PETRI_TRANSITIONS=61} [2024-11-13 15:56:37,664 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 31 predicate places. [2024-11-13 15:56:37,664 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 61 transitions, 326 flow [2024-11-13 15:56:37,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.142857142857142) internal successors, (212), 14 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:37,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:56:37,665 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:56:37,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 15:56:37,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:56:37,865 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:56:37,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:56:37,866 INFO L85 PathProgramCache]: Analyzing trace with hash 799710900, now seen corresponding path program 1 times [2024-11-13 15:56:37,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:56:37,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77760916] [2024-11-13 15:56:37,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:37,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:56:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:38,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:56:38,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:56:38,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77760916] [2024-11-13 15:56:38,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77760916] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:56:38,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029745942] [2024-11-13 15:56:38,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:38,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:56:38,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:56:38,564 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:56:38,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:56:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:38,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 15:56:38,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:56:38,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-13 15:56:39,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 15:56:39,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:56:39,169 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:56:39,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-13 15:56:39,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-13 15:56:39,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:56:39,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029745942] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:56:39,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:56:39,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-11-13 15:56:39,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513004877] [2024-11-13 15:56:39,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:56:39,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 15:56:39,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:56:39,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 15:56:39,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-11-13 15:56:40,164 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-13 15:56:40,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 61 transitions, 326 flow. Second operand has 20 states, 20 states have (on average 12.8) internal successors, (256), 20 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:40,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:56:40,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-13 15:56:40,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:56:42,023 INFO L124 PetriNetUnfolderBase]: 377/865 cut-off events. [2024-11-13 15:56:42,024 INFO L125 PetriNetUnfolderBase]: For 643/693 co-relation queries the response was YES. [2024-11-13 15:56:42,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2336 conditions, 865 events. 377/865 cut-off events. For 643/693 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4923 event pairs, 57 based on Foata normal form. 52/913 useless extension candidates. Maximal degree in co-relation 2318. Up to 304 conditions per place. [2024-11-13 15:56:42,032 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 82 selfloop transitions, 26 changer transitions 0/119 dead transitions. [2024-11-13 15:56:42,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 119 transitions, 745 flow [2024-11-13 15:56:42,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 15:56:42,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-13 15:56:42,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 250 transitions. [2024-11-13 15:56:42,035 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40584415584415584 [2024-11-13 15:56:42,035 INFO L175 Difference]: Start difference. First operand has 74 places, 61 transitions, 326 flow. Second operand 14 states and 250 transitions. [2024-11-13 15:56:42,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 119 transitions, 745 flow [2024-11-13 15:56:42,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 119 transitions, 676 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-11-13 15:56:42,046 INFO L231 Difference]: Finished difference. Result has 78 places, 62 transitions, 333 flow [2024-11-13 15:56:42,046 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=333, PETRI_PLACES=78, PETRI_TRANSITIONS=62} [2024-11-13 15:56:42,047 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 35 predicate places. [2024-11-13 15:56:42,047 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 62 transitions, 333 flow [2024-11-13 15:56:42,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 12.8) internal successors, (256), 20 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:42,047 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:56:42,047 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:56:42,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 15:56:42,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:56:42,248 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:56:42,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:56:42,249 INFO L85 PathProgramCache]: Analyzing trace with hash -239631537, now seen corresponding path program 1 times [2024-11-13 15:56:42,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:56:42,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093933872] [2024-11-13 15:56:42,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:42,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:56:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:42,450 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:56:42,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:56:42,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093933872] [2024-11-13 15:56:42,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093933872] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:56:42,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229193252] [2024-11-13 15:56:42,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:42,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:56:42,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:56:42,453 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:56:42,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:56:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:42,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 15:56:42,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:56:42,666 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:56:42,666 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:56:42,816 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:56:42,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229193252] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:56:42,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:56:42,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-13 15:56:42,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416604756] [2024-11-13 15:56:42,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:56:42,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 15:56:42,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:56:42,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 15:56:42,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-13 15:56:42,851 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-11-13 15:56:42,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 62 transitions, 333 flow. Second operand has 15 states, 15 states have (on average 15.533333333333333) internal successors, (233), 15 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:42,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:56:42,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-11-13 15:56:42,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:56:43,144 INFO L124 PetriNetUnfolderBase]: 333/803 cut-off events. [2024-11-13 15:56:43,144 INFO L125 PetriNetUnfolderBase]: For 1197/1248 co-relation queries the response was YES. [2024-11-13 15:56:43,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2316 conditions, 803 events. 333/803 cut-off events. For 1197/1248 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4742 event pairs, 203 based on Foata normal form. 54/810 useless extension candidates. Maximal degree in co-relation 2297. Up to 391 conditions per place. [2024-11-13 15:56:43,151 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 47 selfloop transitions, 15 changer transitions 1/77 dead transitions. [2024-11-13 15:56:43,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 77 transitions, 490 flow [2024-11-13 15:56:43,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:56:43,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-13 15:56:43,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-11-13 15:56:43,153 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-11-13 15:56:43,153 INFO L175 Difference]: Start difference. First operand has 78 places, 62 transitions, 333 flow. Second operand 8 states and 158 transitions. [2024-11-13 15:56:43,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 77 transitions, 490 flow [2024-11-13 15:56:43,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 77 transitions, 452 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-11-13 15:56:43,166 INFO L231 Difference]: Finished difference. Result has 72 places, 59 transitions, 302 flow [2024-11-13 15:56:43,166 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=302, PETRI_PLACES=72, PETRI_TRANSITIONS=59} [2024-11-13 15:56:43,167 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 29 predicate places. [2024-11-13 15:56:43,168 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 59 transitions, 302 flow [2024-11-13 15:56:43,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 15.533333333333333) internal successors, (233), 15 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:43,168 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:56:43,169 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:56:43,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 15:56:43,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 15:56:43,372 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:56:43,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:56:43,373 INFO L85 PathProgramCache]: Analyzing trace with hash 875141273, now seen corresponding path program 2 times [2024-11-13 15:56:43,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:56:43,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544093564] [2024-11-13 15:56:43,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:43,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:56:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:43,480 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:56:43,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:56:43,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544093564] [2024-11-13 15:56:43,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544093564] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:56:43,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857993494] [2024-11-13 15:56:43,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:56:43,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:56:43,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:56:43,484 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:56:43,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 15:56:43,574 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:56:43,574 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:56:43,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:56:43,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:56:43,617 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:56:43,617 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:56:43,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857993494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:56:43,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:56:43,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-13 15:56:43,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082674545] [2024-11-13 15:56:43,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:56:43,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:56:43,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:56:43,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:56:43,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:56:43,634 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-11-13 15:56:43,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 59 transitions, 302 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:43,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:56:43,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-11-13 15:56:43,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:56:43,868 INFO L124 PetriNetUnfolderBase]: 508/1106 cut-off events. [2024-11-13 15:56:43,868 INFO L125 PetriNetUnfolderBase]: For 1266/1290 co-relation queries the response was YES. [2024-11-13 15:56:43,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3181 conditions, 1106 events. 508/1106 cut-off events. For 1266/1290 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6355 event pairs, 154 based on Foata normal form. 30/1087 useless extension candidates. Maximal degree in co-relation 3162. Up to 349 conditions per place. [2024-11-13 15:56:43,876 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 63 selfloop transitions, 7 changer transitions 1/80 dead transitions. [2024-11-13 15:56:43,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 80 transitions, 556 flow [2024-11-13 15:56:43,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:56:43,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:56:43,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-11-13 15:56:43,877 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48295454545454547 [2024-11-13 15:56:43,877 INFO L175 Difference]: Start difference. First operand has 72 places, 59 transitions, 302 flow. Second operand 4 states and 85 transitions. [2024-11-13 15:56:43,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 80 transitions, 556 flow [2024-11-13 15:56:43,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 80 transitions, 528 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-13 15:56:43,886 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 284 flow [2024-11-13 15:56:43,887 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-11-13 15:56:43,889 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2024-11-13 15:56:43,889 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 284 flow [2024-11-13 15:56:43,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:43,889 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:56:43,890 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-13 15:56:43,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-13 15:56:44,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 15:56:44,091 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:56:44,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:56:44,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1359576225, now seen corresponding path program 1 times [2024-11-13 15:56:44,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:56:44,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853983115] [2024-11-13 15:56:44,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:44,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:56:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:44,172 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:56:44,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:56:44,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853983115] [2024-11-13 15:56:44,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853983115] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:56:44,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616679376] [2024-11-13 15:56:44,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:44,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:56:44,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:56:44,175 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:56:44,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 15:56:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:44,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 15:56:44,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:56:44,318 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:56:44,319 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:56:44,376 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:56:44,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616679376] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:56:44,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:56:44,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-13 15:56:44,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020968289] [2024-11-13 15:56:44,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:56:44,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 15:56:44,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:56:44,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 15:56:44,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-13 15:56:44,416 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-13 15:56:44,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 284 flow. Second operand has 12 states, 12 states have (on average 14.916666666666666) internal successors, (179), 12 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:44,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:56:44,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-13 15:56:44,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:56:44,912 INFO L124 PetriNetUnfolderBase]: 728/1590 cut-off events. [2024-11-13 15:56:44,913 INFO L125 PetriNetUnfolderBase]: For 2569/2665 co-relation queries the response was YES. [2024-11-13 15:56:44,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4864 conditions, 1590 events. 728/1590 cut-off events. For 2569/2665 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 8959 event pairs, 198 based on Foata normal form. 82/1641 useless extension candidates. Maximal degree in co-relation 4846. Up to 615 conditions per place. [2024-11-13 15:56:44,929 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 125 selfloop transitions, 13 changer transitions 0/148 dead transitions. [2024-11-13 15:56:44,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 148 transitions, 1032 flow [2024-11-13 15:56:44,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:56:44,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 15:56:44,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 226 transitions. [2024-11-13 15:56:44,931 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5136363636363637 [2024-11-13 15:56:44,932 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 284 flow. Second operand 10 states and 226 transitions. [2024-11-13 15:56:44,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 148 transitions, 1032 flow [2024-11-13 15:56:44,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 148 transitions, 1000 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 15:56:44,944 INFO L231 Difference]: Finished difference. Result has 77 places, 67 transitions, 350 flow [2024-11-13 15:56:44,944 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=350, PETRI_PLACES=77, PETRI_TRANSITIONS=67} [2024-11-13 15:56:44,945 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 34 predicate places. [2024-11-13 15:56:44,945 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 67 transitions, 350 flow [2024-11-13 15:56:44,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.916666666666666) internal successors, (179), 12 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:44,946 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:56:44,946 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:56:44,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-13 15:56:45,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 15:56:45,151 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:56:45,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:56:45,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1808818940, now seen corresponding path program 1 times [2024-11-13 15:56:45,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:56:45,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216567943] [2024-11-13 15:56:45,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:45,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:56:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:45,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:56:45,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:56:45,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216567943] [2024-11-13 15:56:45,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216567943] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:56:45,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080048772] [2024-11-13 15:56:45,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:45,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:56:45,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:56:45,382 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:56:45,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 15:56:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:45,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 15:56:45,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:56:45,605 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:56:45,606 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:56:45,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:56:45,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080048772] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:56:45,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:56:45,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 15 [2024-11-13 15:56:45,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41900906] [2024-11-13 15:56:45,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:56:45,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 15:56:45,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:56:45,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 15:56:45,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-13 15:56:45,831 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-11-13 15:56:45,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 67 transitions, 350 flow. Second operand has 16 states, 16 states have (on average 15.75) internal successors, (252), 16 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:45,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:56:45,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-11-13 15:56:45,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:56:46,312 INFO L124 PetriNetUnfolderBase]: 544/1314 cut-off events. [2024-11-13 15:56:46,312 INFO L125 PetriNetUnfolderBase]: For 2121/2134 co-relation queries the response was YES. [2024-11-13 15:56:46,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4050 conditions, 1314 events. 544/1314 cut-off events. For 2121/2134 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7506 event pairs, 131 based on Foata normal form. 13/1272 useless extension candidates. Maximal degree in co-relation 4029. Up to 662 conditions per place. [2024-11-13 15:56:46,325 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 34 selfloop transitions, 16 changer transitions 26/92 dead transitions. [2024-11-13 15:56:46,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 92 transitions, 585 flow [2024-11-13 15:56:46,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:56:46,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 15:56:46,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-11-13 15:56:46,327 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44772727272727275 [2024-11-13 15:56:46,327 INFO L175 Difference]: Start difference. First operand has 77 places, 67 transitions, 350 flow. Second operand 10 states and 197 transitions. [2024-11-13 15:56:46,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 92 transitions, 585 flow [2024-11-13 15:56:46,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 92 transitions, 545 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-11-13 15:56:46,338 INFO L231 Difference]: Finished difference. Result has 84 places, 62 transitions, 321 flow [2024-11-13 15:56:46,339 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=321, PETRI_PLACES=84, PETRI_TRANSITIONS=62} [2024-11-13 15:56:46,339 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 41 predicate places. [2024-11-13 15:56:46,339 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 62 transitions, 321 flow [2024-11-13 15:56:46,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.75) internal successors, (252), 16 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:46,340 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:56:46,340 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:56:46,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 15:56:46,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:56:46,541 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:56:46,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:56:46,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1982730219, now seen corresponding path program 2 times [2024-11-13 15:56:46,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:56:46,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092857705] [2024-11-13 15:56:46,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:46,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:56:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:47,801 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:56:47,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:56:47,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092857705] [2024-11-13 15:56:47,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092857705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:56:47,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68786515] [2024-11-13 15:56:47,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:56:47,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:56:47,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:56:47,803 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:56:47,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 15:56:47,885 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:56:47,885 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:56:47,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 15:56:47,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:56:48,032 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 15:56:48,032 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:56:48,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68786515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:56:48,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:56:48,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 13 [2024-11-13 15:56:48,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863668711] [2024-11-13 15:56:48,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:56:48,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:56:48,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:56:48,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:56:48,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-13 15:56:48,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-11-13 15:56:48,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 62 transitions, 321 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:48,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:56:48,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-11-13 15:56:48,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:56:48,365 INFO L124 PetriNetUnfolderBase]: 657/1509 cut-off events. [2024-11-13 15:56:48,365 INFO L125 PetriNetUnfolderBase]: For 2395/2421 co-relation queries the response was YES. [2024-11-13 15:56:48,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4618 conditions, 1509 events. 657/1509 cut-off events. For 2395/2421 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 8673 event pairs, 44 based on Foata normal form. 52/1558 useless extension candidates. Maximal degree in co-relation 4595. Up to 435 conditions per place. [2024-11-13 15:56:48,378 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 80 selfloop transitions, 8 changer transitions 0/102 dead transitions. [2024-11-13 15:56:48,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 102 transitions, 687 flow [2024-11-13 15:56:48,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:56:48,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:56:48,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-11-13 15:56:48,380 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-11-13 15:56:48,380 INFO L175 Difference]: Start difference. First operand has 84 places, 62 transitions, 321 flow. Second operand 5 states and 120 transitions. [2024-11-13 15:56:48,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 102 transitions, 687 flow [2024-11-13 15:56:48,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 102 transitions, 636 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-11-13 15:56:48,389 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 336 flow [2024-11-13 15:56:48,390 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=336, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2024-11-13 15:56:48,391 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 30 predicate places. [2024-11-13 15:56:48,391 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 336 flow [2024-11-13 15:56:48,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:48,391 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:56:48,392 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:56:48,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 15:56:48,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:56:48,592 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:56:48,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:56:48,593 INFO L85 PathProgramCache]: Analyzing trace with hash 172153577, now seen corresponding path program 1 times [2024-11-13 15:56:48,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:56:48,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090987143] [2024-11-13 15:56:48,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:48,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:56:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:49,839 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:56:49,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:56:49,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090987143] [2024-11-13 15:56:49,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090987143] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:56:49,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343154090] [2024-11-13 15:56:49,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:49,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:56:49,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:56:49,844 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:56:49,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 15:56:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:49,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 15:56:49,971 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:56:50,299 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:56:50,299 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:56:50,379 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:56:50,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2024-11-13 15:56:50,492 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 15:56:50,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343154090] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 15:56:50,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:56:50,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10, 7] total 20 [2024-11-13 15:56:50,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052349951] [2024-11-13 15:56:50,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:56:50,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:56:50,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:56:50,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:56:50,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2024-11-13 15:56:50,511 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-11-13 15:56:50,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 336 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:50,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:56:50,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-11-13 15:56:50,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:56:50,924 INFO L124 PetriNetUnfolderBase]: 883/1751 cut-off events. [2024-11-13 15:56:50,928 INFO L125 PetriNetUnfolderBase]: For 2436/2478 co-relation queries the response was YES. [2024-11-13 15:56:50,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5363 conditions, 1751 events. 883/1751 cut-off events. For 2436/2478 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 9553 event pairs, 26 based on Foata normal form. 7/1756 useless extension candidates. Maximal degree in co-relation 5342. Up to 511 conditions per place. [2024-11-13 15:56:50,959 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 76 selfloop transitions, 12 changer transitions 0/99 dead transitions. [2024-11-13 15:56:50,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 99 transitions, 657 flow [2024-11-13 15:56:50,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:56:50,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:56:50,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2024-11-13 15:56:50,960 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4863636363636364 [2024-11-13 15:56:50,960 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 336 flow. Second operand 5 states and 107 transitions. [2024-11-13 15:56:50,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 99 transitions, 657 flow [2024-11-13 15:56:50,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 99 transitions, 652 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:56:50,970 INFO L231 Difference]: Finished difference. Result has 79 places, 67 transitions, 393 flow [2024-11-13 15:56:50,970 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=393, PETRI_PLACES=79, PETRI_TRANSITIONS=67} [2024-11-13 15:56:50,971 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2024-11-13 15:56:50,971 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 67 transitions, 393 flow [2024-11-13 15:56:50,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:50,971 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:56:50,971 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:56:50,990 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 15:56:51,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 15:56:51,175 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:56:51,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:56:51,176 INFO L85 PathProgramCache]: Analyzing trace with hash -709138572, now seen corresponding path program 2 times [2024-11-13 15:56:51,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:56:51,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441295303] [2024-11-13 15:56:51,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:51,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:56:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:52,306 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:56:52,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:56:52,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441295303] [2024-11-13 15:56:52,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441295303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:56:52,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874651662] [2024-11-13 15:56:52,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:56:52,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:56:52,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:56:52,309 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:56:52,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 15:56:52,395 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:56:52,395 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:56:52,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 15:56:52,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:56:52,557 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 15:56:52,557 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:56:52,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874651662] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:56:52,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:56:52,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 13 [2024-11-13 15:56:52,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361423089] [2024-11-13 15:56:52,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:56:52,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:56:52,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:56:52,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:56:52,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-13 15:56:52,578 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-11-13 15:56:52,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 67 transitions, 393 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:52,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:56:52,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-11-13 15:56:52,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:56:52,875 INFO L124 PetriNetUnfolderBase]: 672/1505 cut-off events. [2024-11-13 15:56:52,876 INFO L125 PetriNetUnfolderBase]: For 3562/3588 co-relation queries the response was YES. [2024-11-13 15:56:52,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4956 conditions, 1505 events. 672/1505 cut-off events. For 3562/3588 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 8498 event pairs, 47 based on Foata normal form. 27/1526 useless extension candidates. Maximal degree in co-relation 4931. Up to 548 conditions per place. [2024-11-13 15:56:52,897 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 80 selfloop transitions, 9 changer transitions 0/104 dead transitions. [2024-11-13 15:56:52,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 104 transitions, 734 flow [2024-11-13 15:56:52,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:56:52,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:56:52,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-11-13 15:56:52,902 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5363636363636364 [2024-11-13 15:56:52,902 INFO L175 Difference]: Start difference. First operand has 79 places, 67 transitions, 393 flow. Second operand 5 states and 118 transitions. [2024-11-13 15:56:52,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 104 transitions, 734 flow [2024-11-13 15:56:52,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 104 transitions, 718 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-13 15:56:52,912 INFO L231 Difference]: Finished difference. Result has 82 places, 69 transitions, 428 flow [2024-11-13 15:56:52,912 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=428, PETRI_PLACES=82, PETRI_TRANSITIONS=69} [2024-11-13 15:56:52,913 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 39 predicate places. [2024-11-13 15:56:52,913 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 69 transitions, 428 flow [2024-11-13 15:56:52,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:52,913 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:56:52,913 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:56:52,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-13 15:56:53,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 15:56:53,117 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:56:53,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:56:53,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1041794140, now seen corresponding path program 1 times [2024-11-13 15:56:53,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:56:53,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675272664] [2024-11-13 15:56:53,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:53,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:56:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:54,489 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:56:54,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:56:54,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675272664] [2024-11-13 15:56:54,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675272664] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:56:54,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728413123] [2024-11-13 15:56:54,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:54,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:56:54,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:56:54,492 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:56:54,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 15:56:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:54,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 15:56:54,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:56:54,890 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:56:54,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:56:54,990 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:56:54,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2024-11-13 15:56:55,117 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 15:56:55,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728413123] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 15:56:55,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:56:55,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10, 7] total 20 [2024-11-13 15:56:55,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28907662] [2024-11-13 15:56:55,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:56:55,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:56:55,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:56:55,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:56:55,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-11-13 15:56:55,138 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-13 15:56:55,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 69 transitions, 428 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:55,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:56:55,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-13 15:56:55,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:56:55,499 INFO L124 PetriNetUnfolderBase]: 706/1526 cut-off events. [2024-11-13 15:56:55,500 INFO L125 PetriNetUnfolderBase]: For 4353/4389 co-relation queries the response was YES. [2024-11-13 15:56:55,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5215 conditions, 1526 events. 706/1526 cut-off events. For 4353/4389 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 8486 event pairs, 185 based on Foata normal form. 7/1501 useless extension candidates. Maximal degree in co-relation 5188. Up to 947 conditions per place. [2024-11-13 15:56:55,516 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 70 selfloop transitions, 10 changer transitions 0/94 dead transitions. [2024-11-13 15:56:55,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 94 transitions, 686 flow [2024-11-13 15:56:55,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:56:55,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:56:55,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2024-11-13 15:56:55,518 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-13 15:56:55,518 INFO L175 Difference]: Start difference. First operand has 82 places, 69 transitions, 428 flow. Second operand 5 states and 110 transitions. [2024-11-13 15:56:55,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 94 transitions, 686 flow [2024-11-13 15:56:55,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 94 transitions, 663 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 15:56:55,531 INFO L231 Difference]: Finished difference. Result has 83 places, 70 transitions, 446 flow [2024-11-13 15:56:55,532 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=446, PETRI_PLACES=83, PETRI_TRANSITIONS=70} [2024-11-13 15:56:55,532 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2024-11-13 15:56:55,532 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 70 transitions, 446 flow [2024-11-13 15:56:55,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:55,532 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:56:55,532 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:56:55,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 15:56:55,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 15:56:55,733 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:56:55,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:56:55,733 INFO L85 PathProgramCache]: Analyzing trace with hash -41948106, now seen corresponding path program 2 times [2024-11-13 15:56:55,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:56:55,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36480512] [2024-11-13 15:56:55,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:55,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:56:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:55,808 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:56:55,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:56:55,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36480512] [2024-11-13 15:56:55,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36480512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:56:55,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:56:55,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:56:55,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682266392] [2024-11-13 15:56:55,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:56:55,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:56:55,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:56:55,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:56:55,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:56:55,811 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2024-11-13 15:56:55,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 70 transitions, 446 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:55,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:56:55,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2024-11-13 15:56:55,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:56:56,132 INFO L124 PetriNetUnfolderBase]: 807/1989 cut-off events. [2024-11-13 15:56:56,132 INFO L125 PetriNetUnfolderBase]: For 6114/6282 co-relation queries the response was YES. [2024-11-13 15:56:56,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6688 conditions, 1989 events. 807/1989 cut-off events. For 6114/6282 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 12255 event pairs, 135 based on Foata normal form. 47/2013 useless extension candidates. Maximal degree in co-relation 6661. Up to 717 conditions per place. [2024-11-13 15:56:56,146 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 79 selfloop transitions, 11 changer transitions 7/114 dead transitions. [2024-11-13 15:56:56,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 114 transitions, 895 flow [2024-11-13 15:56:56,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:56:56,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:56:56,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-11-13 15:56:56,149 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6193181818181818 [2024-11-13 15:56:56,149 INFO L175 Difference]: Start difference. First operand has 83 places, 70 transitions, 446 flow. Second operand 4 states and 109 transitions. [2024-11-13 15:56:56,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 114 transitions, 895 flow [2024-11-13 15:56:56,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 114 transitions, 862 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-13 15:56:56,161 INFO L231 Difference]: Finished difference. Result has 85 places, 71 transitions, 478 flow [2024-11-13 15:56:56,162 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=478, PETRI_PLACES=85, PETRI_TRANSITIONS=71} [2024-11-13 15:56:56,163 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 42 predicate places. [2024-11-13 15:56:56,163 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 71 transitions, 478 flow [2024-11-13 15:56:56,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:56,163 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:56:56,163 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:56:56,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 15:56:56,163 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:56:56,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:56:56,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1048220843, now seen corresponding path program 1 times [2024-11-13 15:56:56,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:56:56,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659419721] [2024-11-13 15:56:56,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:56,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:56:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:57,180 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:56:57,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:56:57,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659419721] [2024-11-13 15:56:57,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659419721] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:56:57,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679697318] [2024-11-13 15:56:57,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:57,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:56:57,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:56:57,183 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:56:57,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 15:56:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:57,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 15:56:57,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:56:58,063 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:56:58,064 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:56:58,589 INFO L349 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2024-11-13 15:56:58,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 42 [2024-11-13 15:56:59,270 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:56:59,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679697318] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:56:59,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:56:59,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 34 [2024-11-13 15:56:59,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350417873] [2024-11-13 15:56:59,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:56:59,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-13 15:56:59,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:56:59,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-13 15:56:59,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1043, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 15:56:59,617 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-11-13 15:56:59,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 71 transitions, 478 flow. Second operand has 36 states, 36 states have (on average 11.61111111111111) internal successors, (418), 36 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:56:59,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:56:59,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-11-13 15:56:59,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:57:03,389 INFO L124 PetriNetUnfolderBase]: 1993/4181 cut-off events. [2024-11-13 15:57:03,389 INFO L125 PetriNetUnfolderBase]: For 15404/15662 co-relation queries the response was YES. [2024-11-13 15:57:03,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15016 conditions, 4181 events. 1993/4181 cut-off events. For 15404/15662 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 28591 event pairs, 218 based on Foata normal form. 255/4425 useless extension candidates. Maximal degree in co-relation 14987. Up to 1122 conditions per place. [2024-11-13 15:57:03,419 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 283 selfloop transitions, 75 changer transitions 6/375 dead transitions. [2024-11-13 15:57:03,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 375 transitions, 2902 flow [2024-11-13 15:57:03,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-13 15:57:03,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-11-13 15:57:03,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 686 transitions. [2024-11-13 15:57:03,422 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3802660753880266 [2024-11-13 15:57:03,422 INFO L175 Difference]: Start difference. First operand has 85 places, 71 transitions, 478 flow. Second operand 41 states and 686 transitions. [2024-11-13 15:57:03,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 375 transitions, 2902 flow [2024-11-13 15:57:03,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 375 transitions, 2799 flow, removed 45 selfloop flow, removed 3 redundant places. [2024-11-13 15:57:03,460 INFO L231 Difference]: Finished difference. Result has 141 places, 137 transitions, 1423 flow [2024-11-13 15:57:03,460 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=1423, PETRI_PLACES=141, PETRI_TRANSITIONS=137} [2024-11-13 15:57:03,461 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 98 predicate places. [2024-11-13 15:57:03,461 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 137 transitions, 1423 flow [2024-11-13 15:57:03,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 11.61111111111111) internal successors, (418), 36 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:57:03,461 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:57:03,462 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:57:03,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 15:57:03,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:03,665 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:57:03,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:57:03,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1714559711, now seen corresponding path program 2 times [2024-11-13 15:57:03,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:57:03,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512484148] [2024-11-13 15:57:03,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:57:03,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:57:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:04,733 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:57:04,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:57:04,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512484148] [2024-11-13 15:57:04,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512484148] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:57:04,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135221219] [2024-11-13 15:57:04,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:57:04,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:04,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:57:04,736 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:57:04,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 15:57:04,853 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:57:04,853 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:57:04,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 15:57:04,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:57:05,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-13 15:57:05,579 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-13 15:57:05,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-13 15:57:05,623 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:57:05,623 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:57:06,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2024-11-13 15:57:06,745 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-13 15:57:06,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 47 [2024-11-13 15:57:07,093 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:57:07,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135221219] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:57:07,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:57:07,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 36 [2024-11-13 15:57:07,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275739385] [2024-11-13 15:57:07,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:57:07,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-13 15:57:07,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:57:07,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-13 15:57:07,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1256, Unknown=0, NotChecked=0, Total=1406 [2024-11-13 15:57:07,356 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-11-13 15:57:07,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 137 transitions, 1423 flow. Second operand has 38 states, 38 states have (on average 11.526315789473685) internal successors, (438), 38 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:57:07,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:57:07,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-11-13 15:57:07,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:57:13,262 INFO L124 PetriNetUnfolderBase]: 4179/8690 cut-off events. [2024-11-13 15:57:13,262 INFO L125 PetriNetUnfolderBase]: For 76835/77342 co-relation queries the response was YES. [2024-11-13 15:57:13,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38672 conditions, 8690 events. 4179/8690 cut-off events. For 76835/77342 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 64662 event pairs, 602 based on Foata normal form. 423/9079 useless extension candidates. Maximal degree in co-relation 38624. Up to 1389 conditions per place. [2024-11-13 15:57:13,363 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 439 selfloop transitions, 150 changer transitions 22/622 dead transitions. [2024-11-13 15:57:13,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 622 transitions, 6328 flow [2024-11-13 15:57:13,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-13 15:57:13,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2024-11-13 15:57:13,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 980 transitions. [2024-11-13 15:57:13,367 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4202401372212693 [2024-11-13 15:57:13,367 INFO L175 Difference]: Start difference. First operand has 141 places, 137 transitions, 1423 flow. Second operand 53 states and 980 transitions. [2024-11-13 15:57:13,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 622 transitions, 6328 flow [2024-11-13 15:57:13,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 622 transitions, 6016 flow, removed 132 selfloop flow, removed 10 redundant places. [2024-11-13 15:57:13,651 INFO L231 Difference]: Finished difference. Result has 207 places, 268 transitions, 3710 flow [2024-11-13 15:57:13,651 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1123, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=3710, PETRI_PLACES=207, PETRI_TRANSITIONS=268} [2024-11-13 15:57:13,651 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 164 predicate places. [2024-11-13 15:57:13,652 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 268 transitions, 3710 flow [2024-11-13 15:57:13,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 11.526315789473685) internal successors, (438), 38 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:57:13,652 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:57:13,652 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:57:13,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 15:57:13,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-13 15:57:13,854 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:57:13,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:57:13,856 INFO L85 PathProgramCache]: Analyzing trace with hash 718515791, now seen corresponding path program 1 times [2024-11-13 15:57:13,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:57:13,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524846690] [2024-11-13 15:57:13,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:57:13,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:57:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:14,756 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:57:14,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:57:14,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524846690] [2024-11-13 15:57:14,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524846690] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:57:14,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779363488] [2024-11-13 15:57:14,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:57:14,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:14,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:57:14,759 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:57:14,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 15:57:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:14,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 15:57:14,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:57:15,588 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:57:15,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:57:16,063 INFO L349 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2024-11-13 15:57:16,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 42 [2024-11-13 15:57:16,731 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:57:16,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779363488] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:57:16,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:57:16,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 34 [2024-11-13 15:57:16,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889262037] [2024-11-13 15:57:16,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:57:16,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-13 15:57:16,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:57:16,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-13 15:57:16,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1026, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 15:57:17,011 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-11-13 15:57:17,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 268 transitions, 3710 flow. Second operand has 36 states, 36 states have (on average 11.694444444444445) internal successors, (421), 36 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:57:17,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:57:17,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-11-13 15:57:17,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:57:21,320 INFO L124 PetriNetUnfolderBase]: 4201/8797 cut-off events. [2024-11-13 15:57:21,321 INFO L125 PetriNetUnfolderBase]: For 137335/137807 co-relation queries the response was YES. [2024-11-13 15:57:21,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45295 conditions, 8797 events. 4201/8797 cut-off events. For 137335/137807 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 65883 event pairs, 629 based on Foata normal form. 49/8817 useless extension candidates. Maximal degree in co-relation 45219. Up to 3357 conditions per place. [2024-11-13 15:57:21,508 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 361 selfloop transitions, 124 changer transitions 3/499 dead transitions. [2024-11-13 15:57:21,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 499 transitions, 6270 flow [2024-11-13 15:57:21,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-13 15:57:21,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-13 15:57:21,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 549 transitions. [2024-11-13 15:57:21,518 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3669786096256685 [2024-11-13 15:57:21,518 INFO L175 Difference]: Start difference. First operand has 207 places, 268 transitions, 3710 flow. Second operand 34 states and 549 transitions. [2024-11-13 15:57:21,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 499 transitions, 6270 flow [2024-11-13 15:57:22,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 499 transitions, 5392 flow, removed 424 selfloop flow, removed 10 redundant places. [2024-11-13 15:57:22,500 INFO L231 Difference]: Finished difference. Result has 236 places, 287 transitions, 3742 flow [2024-11-13 15:57:22,501 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3038, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3742, PETRI_PLACES=236, PETRI_TRANSITIONS=287} [2024-11-13 15:57:22,501 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 193 predicate places. [2024-11-13 15:57:22,501 INFO L471 AbstractCegarLoop]: Abstraction has has 236 places, 287 transitions, 3742 flow [2024-11-13 15:57:22,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 11.694444444444445) internal successors, (421), 36 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:57:22,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:57:22,502 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:57:22,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-13 15:57:22,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-13 15:57:22,702 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:57:22,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:57:22,702 INFO L85 PathProgramCache]: Analyzing trace with hash -2119061276, now seen corresponding path program 1 times [2024-11-13 15:57:22,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:57:22,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062610624] [2024-11-13 15:57:22,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:57:22,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:57:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:23,789 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:57:23,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:57:23,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062610624] [2024-11-13 15:57:23,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062610624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:57:23,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600961592] [2024-11-13 15:57:23,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:57:23,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:23,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:57:23,793 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:57:23,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 15:57:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:23,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 15:57:23,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:57:24,767 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:57:24,767 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:57:25,273 INFO L349 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2024-11-13 15:57:25,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 41 [2024-11-13 15:57:25,980 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:57:25,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600961592] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:57:25,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:57:25,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 34 [2024-11-13 15:57:25,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725829083] [2024-11-13 15:57:25,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:57:25,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-13 15:57:25,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:57:25,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-13 15:57:25,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1036, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 15:57:26,597 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-13 15:57:26,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 287 transitions, 3742 flow. Second operand has 36 states, 36 states have (on average 12.527777777777779) internal successors, (451), 36 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:57:26,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:57:26,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-13 15:57:26,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:57:30,524 INFO L124 PetriNetUnfolderBase]: 3729/8559 cut-off events. [2024-11-13 15:57:30,524 INFO L125 PetriNetUnfolderBase]: For 134907/135364 co-relation queries the response was YES. [2024-11-13 15:57:30,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43121 conditions, 8559 events. 3729/8559 cut-off events. For 134907/135364 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 68715 event pairs, 338 based on Foata normal form. 150/8680 useless extension candidates. Maximal degree in co-relation 43038. Up to 4392 conditions per place. [2024-11-13 15:57:30,656 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 301 selfloop transitions, 69 changer transitions 31/462 dead transitions. [2024-11-13 15:57:30,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 462 transitions, 5865 flow [2024-11-13 15:57:30,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-13 15:57:30,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-13 15:57:30,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 471 transitions. [2024-11-13 15:57:30,659 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3823051948051948 [2024-11-13 15:57:30,659 INFO L175 Difference]: Start difference. First operand has 236 places, 287 transitions, 3742 flow. Second operand 28 states and 471 transitions. [2024-11-13 15:57:30,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 462 transitions, 5865 flow [2024-11-13 15:57:31,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 462 transitions, 5697 flow, removed 38 selfloop flow, removed 22 redundant places. [2024-11-13 15:57:31,565 INFO L231 Difference]: Finished difference. Result has 248 places, 298 transitions, 3984 flow [2024-11-13 15:57:31,565 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3605, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=3984, PETRI_PLACES=248, PETRI_TRANSITIONS=298} [2024-11-13 15:57:31,566 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 205 predicate places. [2024-11-13 15:57:31,566 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 298 transitions, 3984 flow [2024-11-13 15:57:31,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 12.527777777777779) internal successors, (451), 36 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:57:31,566 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:57:31,566 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:57:31,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 15:57:31,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:31,770 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:57:31,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:57:31,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1611742940, now seen corresponding path program 2 times [2024-11-13 15:57:31,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:57:31,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731618970] [2024-11-13 15:57:31,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:57:31,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:57:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:32,757 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:57:32,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:57:32,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731618970] [2024-11-13 15:57:32,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731618970] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:57:32,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480828475] [2024-11-13 15:57:32,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:57:32,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:32,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:57:32,760 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:57:32,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 15:57:32,856 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:57:32,856 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:57:32,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-13 15:57:32,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:57:33,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:57:33,606 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:57:33,606 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:57:34,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 69 [2024-11-13 15:57:34,447 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:57:34,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 138 treesize of output 135 [2024-11-13 15:57:35,268 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:57:35,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480828475] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:57:35,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:57:35,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 34 [2024-11-13 15:57:35,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450440094] [2024-11-13 15:57:35,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:57:35,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-13 15:57:35,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:57:35,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-13 15:57:35,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1088, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 15:57:35,812 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-13 15:57:35,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 298 transitions, 3984 flow. Second operand has 36 states, 36 states have (on average 12.527777777777779) internal successors, (451), 36 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:57:35,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:57:35,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-13 15:57:35,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:57:40,858 INFO L124 PetriNetUnfolderBase]: 3843/8672 cut-off events. [2024-11-13 15:57:40,858 INFO L125 PetriNetUnfolderBase]: For 171242/171727 co-relation queries the response was YES. [2024-11-13 15:57:40,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46774 conditions, 8672 events. 3843/8672 cut-off events. For 171242/171727 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 69564 event pairs, 631 based on Foata normal form. 194/8783 useless extension candidates. Maximal degree in co-relation 46683. Up to 4122 conditions per place. [2024-11-13 15:57:40,963 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 373 selfloop transitions, 83 changer transitions 11/527 dead transitions. [2024-11-13 15:57:40,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 527 transitions, 6599 flow [2024-11-13 15:57:40,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-13 15:57:40,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-13 15:57:40,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 644 transitions. [2024-11-13 15:57:40,965 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3955773955773956 [2024-11-13 15:57:40,965 INFO L175 Difference]: Start difference. First operand has 248 places, 298 transitions, 3984 flow. Second operand 37 states and 644 transitions. [2024-11-13 15:57:40,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 527 transitions, 6599 flow [2024-11-13 15:57:41,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 527 transitions, 6409 flow, removed 53 selfloop flow, removed 23 redundant places. [2024-11-13 15:57:41,955 INFO L231 Difference]: Finished difference. Result has 262 places, 312 transitions, 4404 flow [2024-11-13 15:57:41,955 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3819, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=4404, PETRI_PLACES=262, PETRI_TRANSITIONS=312} [2024-11-13 15:57:41,955 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 219 predicate places. [2024-11-13 15:57:41,955 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 312 transitions, 4404 flow [2024-11-13 15:57:41,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 12.527777777777779) internal successors, (451), 36 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:57:41,956 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:57:41,956 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:57:41,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 15:57:42,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:42,157 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:57:42,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:57:42,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1703474163, now seen corresponding path program 3 times [2024-11-13 15:57:42,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:57:42,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820616667] [2024-11-13 15:57:42,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:57:42,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:57:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:43,557 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:57:43,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:57:43,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820616667] [2024-11-13 15:57:43,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820616667] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:57:43,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266598097] [2024-11-13 15:57:43,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:57:43,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:43,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:57:43,560 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:57:43,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 15:57:43,663 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 15:57:43,663 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:57:43,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 15:57:43,666 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:57:43,906 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 15:57:43,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:57:44,009 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:57:44,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2024-11-13 15:57:44,077 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 15:57:44,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266598097] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:57:44,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:57:44,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6] total 24 [2024-11-13 15:57:44,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442813900] [2024-11-13 15:57:44,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:57:44,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 15:57:44,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:57:44,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 15:57:44,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2024-11-13 15:57:44,277 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-11-13 15:57:44,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 312 transitions, 4404 flow. Second operand has 26 states, 26 states have (on average 11.653846153846153) internal successors, (303), 26 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:57:44,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:57:44,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-11-13 15:57:44,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:57:49,402 INFO L124 PetriNetUnfolderBase]: 5757/12100 cut-off events. [2024-11-13 15:57:49,402 INFO L125 PetriNetUnfolderBase]: For 244885/245551 co-relation queries the response was YES. [2024-11-13 15:57:49,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66406 conditions, 12100 events. 5757/12100 cut-off events. For 244885/245551 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 97535 event pairs, 826 based on Foata normal form. 353/12404 useless extension candidates. Maximal degree in co-relation 66311. Up to 4571 conditions per place. [2024-11-13 15:57:49,592 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 436 selfloop transitions, 228 changer transitions 12/687 dead transitions. [2024-11-13 15:57:49,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 687 transitions, 9505 flow [2024-11-13 15:57:49,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-13 15:57:49,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-13 15:57:49,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 685 transitions. [2024-11-13 15:57:49,594 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3991841491841492 [2024-11-13 15:57:49,594 INFO L175 Difference]: Start difference. First operand has 262 places, 312 transitions, 4404 flow. Second operand 39 states and 685 transitions. [2024-11-13 15:57:49,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 687 transitions, 9505 flow [2024-11-13 15:57:51,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 687 transitions, 9278 flow, removed 77 selfloop flow, removed 17 redundant places. [2024-11-13 15:57:51,359 INFO L231 Difference]: Finished difference. Result has 296 places, 400 transitions, 6550 flow [2024-11-13 15:57:51,359 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4205, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=6550, PETRI_PLACES=296, PETRI_TRANSITIONS=400} [2024-11-13 15:57:51,360 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 253 predicate places. [2024-11-13 15:57:51,360 INFO L471 AbstractCegarLoop]: Abstraction has has 296 places, 400 transitions, 6550 flow [2024-11-13 15:57:51,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.653846153846153) internal successors, (303), 26 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:57:51,360 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:57:51,360 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:57:51,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 15:57:51,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-13 15:57:51,561 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:57:51,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:57:51,562 INFO L85 PathProgramCache]: Analyzing trace with hash 472917213, now seen corresponding path program 4 times [2024-11-13 15:57:51,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:57:51,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280713133] [2024-11-13 15:57:51,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:57:51,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:57:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:52,757 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:57:52,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:57:52,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280713133] [2024-11-13 15:57:52,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280713133] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:57:52,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305031873] [2024-11-13 15:57:52,757 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:57:52,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:52,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:57:52,759 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:57:52,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 15:57:52,864 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:57:52,865 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:57:52,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 15:57:52,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:57:53,140 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 15:57:53,140 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:57:53,298 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-13 15:57:53,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 13 [2024-11-13 15:57:53,340 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 15:57:53,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305031873] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:57:53,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:57:53,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 6] total 26 [2024-11-13 15:57:53,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181681619] [2024-11-13 15:57:53,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:57:53,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 15:57:53,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:57:53,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 15:57:53,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2024-11-13 15:57:53,586 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-11-13 15:57:53,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 400 transitions, 6550 flow. Second operand has 28 states, 28 states have (on average 11.642857142857142) internal successors, (326), 28 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:57:53,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:57:53,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-11-13 15:57:53,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:58:01,689 INFO L124 PetriNetUnfolderBase]: 8280/17455 cut-off events. [2024-11-13 15:58:01,689 INFO L125 PetriNetUnfolderBase]: For 456916/457774 co-relation queries the response was YES. [2024-11-13 15:58:01,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105203 conditions, 17455 events. 8280/17455 cut-off events. For 456916/457774 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 151836 event pairs, 542 based on Foata normal form. 453/17864 useless extension candidates. Maximal degree in co-relation 105090. Up to 4003 conditions per place. [2024-11-13 15:58:02,039 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 530 selfloop transitions, 364 changer transitions 21/926 dead transitions. [2024-11-13 15:58:02,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 926 transitions, 15134 flow [2024-11-13 15:58:02,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-13 15:58:02,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-13 15:58:02,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 791 transitions. [2024-11-13 15:58:02,042 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40857438016528924 [2024-11-13 15:58:02,042 INFO L175 Difference]: Start difference. First operand has 296 places, 400 transitions, 6550 flow. Second operand 44 states and 791 transitions. [2024-11-13 15:58:02,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 926 transitions, 15134 flow [2024-11-13 15:58:05,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 926 transitions, 14274 flow, removed 268 selfloop flow, removed 11 redundant places. [2024-11-13 15:58:05,551 INFO L231 Difference]: Finished difference. Result has 356 places, 539 transitions, 9950 flow [2024-11-13 15:58:05,551 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6121, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=9950, PETRI_PLACES=356, PETRI_TRANSITIONS=539} [2024-11-13 15:58:05,552 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 313 predicate places. [2024-11-13 15:58:05,552 INFO L471 AbstractCegarLoop]: Abstraction has has 356 places, 539 transitions, 9950 flow [2024-11-13 15:58:05,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.642857142857142) internal successors, (326), 28 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:05,552 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:58:05,552 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:05,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 15:58:05,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-13 15:58:05,753 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:58:05,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:05,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1923636075, now seen corresponding path program 5 times [2024-11-13 15:58:05,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:05,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300958027] [2024-11-13 15:58:05,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:05,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:06,977 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:06,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:06,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300958027] [2024-11-13 15:58:06,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300958027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:06,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60072729] [2024-11-13 15:58:06,977 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:58:06,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:06,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:06,979 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:06,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 15:58:07,076 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-13 15:58:07,076 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:58:07,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 15:58:07,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:07,622 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:58:07,622 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:08,123 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:58:08,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 105 treesize of output 73 [2024-11-13 15:58:08,260 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 15:58:08,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60072729] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:08,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:58:08,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 7] total 32 [2024-11-13 15:58:08,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10707462] [2024-11-13 15:58:08,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:08,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-13 15:58:08,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:08,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-13 15:58:08,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1010, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 15:58:08,469 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-13 15:58:08,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 539 transitions, 9950 flow. Second operand has 34 states, 34 states have (on average 10.823529411764707) internal successors, (368), 34 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:08,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:58:08,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-13 15:58:08,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:58:19,455 INFO L124 PetriNetUnfolderBase]: 10348/20998 cut-off events. [2024-11-13 15:58:19,456 INFO L125 PetriNetUnfolderBase]: For 648007/648493 co-relation queries the response was YES. [2024-11-13 15:58:19,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123670 conditions, 20998 events. 10348/20998 cut-off events. For 648007/648493 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 182194 event pairs, 838 based on Foata normal form. 402/21291 useless extension candidates. Maximal degree in co-relation 123530. Up to 3331 conditions per place. [2024-11-13 15:58:20,016 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 509 selfloop transitions, 351 changer transitions 10/880 dead transitions. [2024-11-13 15:58:20,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 880 transitions, 15733 flow [2024-11-13 15:58:20,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-13 15:58:20,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-13 15:58:20,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 639 transitions. [2024-11-13 15:58:20,023 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3723776223776224 [2024-11-13 15:58:20,024 INFO L175 Difference]: Start difference. First operand has 356 places, 539 transitions, 9950 flow. Second operand 39 states and 639 transitions. [2024-11-13 15:58:20,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 880 transitions, 15733 flow [2024-11-13 15:58:24,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 880 transitions, 15062 flow, removed 211 selfloop flow, removed 17 redundant places. [2024-11-13 15:58:24,496 INFO L231 Difference]: Finished difference. Result has 382 places, 577 transitions, 11456 flow [2024-11-13 15:58:24,497 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=9186, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=11456, PETRI_PLACES=382, PETRI_TRANSITIONS=577} [2024-11-13 15:58:24,497 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 339 predicate places. [2024-11-13 15:58:24,497 INFO L471 AbstractCegarLoop]: Abstraction has has 382 places, 577 transitions, 11456 flow [2024-11-13 15:58:24,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 10.823529411764707) internal successors, (368), 34 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:24,498 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:58:24,498 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:24,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-13 15:58:24,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-13 15:58:24,698 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:58:24,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:24,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1987081442, now seen corresponding path program 3 times [2024-11-13 15:58:24,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:24,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435850974] [2024-11-13 15:58:24,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:24,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:26,515 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:26,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:26,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435850974] [2024-11-13 15:58:26,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435850974] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:26,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937158377] [2024-11-13 15:58:26,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:58:26,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:26,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:26,519 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:26,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 15:58:26,647 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 15:58:26,647 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:58:26,649 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 15:58:26,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:27,241 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 15:58:27,241 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:27,740 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:58:27,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 51 [2024-11-13 15:58:27,927 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 15:58:27,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937158377] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:27,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:58:27,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6] total 26 [2024-11-13 15:58:27,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875095899] [2024-11-13 15:58:27,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:27,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 15:58:27,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:27,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 15:58:27,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2024-11-13 15:58:28,453 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-13 15:58:28,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 577 transitions, 11456 flow. Second operand has 28 states, 28 states have (on average 12.892857142857142) internal successors, (361), 28 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:28,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:58:28,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-13 15:58:28,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:58:37,966 INFO L124 PetriNetUnfolderBase]: 8623/19997 cut-off events. [2024-11-13 15:58:37,966 INFO L125 PetriNetUnfolderBase]: For 626142/627295 co-relation queries the response was YES. [2024-11-13 15:58:38,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134814 conditions, 19997 events. 8623/19997 cut-off events. For 626142/627295 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 194084 event pairs, 740 based on Foata normal form. 650/20422 useless extension candidates. Maximal degree in co-relation 134669. Up to 7915 conditions per place. [2024-11-13 15:58:38,422 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 650 selfloop transitions, 298 changer transitions 19/1053 dead transitions. [2024-11-13 15:58:38,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 1053 transitions, 19625 flow [2024-11-13 15:58:38,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-13 15:58:38,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-13 15:58:38,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 670 transitions. [2024-11-13 15:58:38,424 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4007177033492823 [2024-11-13 15:58:38,424 INFO L175 Difference]: Start difference. First operand has 382 places, 577 transitions, 11456 flow. Second operand 38 states and 670 transitions. [2024-11-13 15:58:38,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 1053 transitions, 19625 flow [2024-11-13 15:58:44,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 1053 transitions, 19053 flow, removed 130 selfloop flow, removed 20 redundant places. [2024-11-13 15:58:44,303 INFO L231 Difference]: Finished difference. Result has 408 places, 701 transitions, 14968 flow [2024-11-13 15:58:44,304 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=11050, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=14968, PETRI_PLACES=408, PETRI_TRANSITIONS=701} [2024-11-13 15:58:44,305 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 365 predicate places. [2024-11-13 15:58:44,305 INFO L471 AbstractCegarLoop]: Abstraction has has 408 places, 701 transitions, 14968 flow [2024-11-13 15:58:44,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 12.892857142857142) internal successors, (361), 28 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:44,305 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:58:44,305 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:44,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-13 15:58:44,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-13 15:58:44,506 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:58:44,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:44,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1411652152, now seen corresponding path program 1 times [2024-11-13 15:58:44,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:44,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482056509] [2024-11-13 15:58:44,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:44,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:45,303 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:45,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:45,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482056509] [2024-11-13 15:58:45,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482056509] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:45,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843558528] [2024-11-13 15:58:45,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:45,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:45,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:45,306 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:45,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 15:58:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:45,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 15:58:45,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:45,995 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:58:45,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:46,346 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:58:46,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 51 [2024-11-13 15:58:46,524 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 15:58:46,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843558528] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:46,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:58:46,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 6] total 29 [2024-11-13 15:58:46,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425953766] [2024-11-13 15:58:46,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:46,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-13 15:58:46,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:46,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-13 15:58:46,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=838, Unknown=0, NotChecked=0, Total=930 [2024-11-13 15:58:46,999 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-11-13 15:58:47,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 701 transitions, 14968 flow. Second operand has 31 states, 31 states have (on average 12.0) internal successors, (372), 31 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:47,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:58:47,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-11-13 15:58:47,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:58:57,742 INFO L124 PetriNetUnfolderBase]: 11245/23875 cut-off events. [2024-11-13 15:58:57,743 INFO L125 PetriNetUnfolderBase]: For 760457/761285 co-relation queries the response was YES. [2024-11-13 15:58:58,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161325 conditions, 23875 events. 11245/23875 cut-off events. For 760457/761285 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 223629 event pairs, 2464 based on Foata normal form. 125/23821 useless extension candidates. Maximal degree in co-relation 161179. Up to 14986 conditions per place. [2024-11-13 15:58:58,609 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 600 selfloop transitions, 116 changer transitions 51/851 dead transitions. [2024-11-13 15:58:58,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 851 transitions, 17727 flow [2024-11-13 15:58:58,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-13 15:58:58,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-13 15:58:58,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 440 transitions. [2024-11-13 15:58:58,610 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-11-13 15:58:58,611 INFO L175 Difference]: Start difference. First operand has 408 places, 701 transitions, 14968 flow. Second operand 28 states and 440 transitions. [2024-11-13 15:58:58,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 851 transitions, 17727 flow [2024-11-13 15:59:07,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 851 transitions, 17075 flow, removed 274 selfloop flow, removed 15 redundant places. [2024-11-13 15:59:07,167 INFO L231 Difference]: Finished difference. Result has 421 places, 688 transitions, 14409 flow [2024-11-13 15:59:07,168 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=14408, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=14409, PETRI_PLACES=421, PETRI_TRANSITIONS=688} [2024-11-13 15:59:07,169 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 378 predicate places. [2024-11-13 15:59:07,169 INFO L471 AbstractCegarLoop]: Abstraction has has 421 places, 688 transitions, 14409 flow [2024-11-13 15:59:07,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 12.0) internal successors, (372), 31 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:07,169 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:59:07,169 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:07,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-13 15:59:07,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-13 15:59:07,370 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:59:07,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:07,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1683736900, now seen corresponding path program 6 times [2024-11-13 15:59:07,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:07,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155747639] [2024-11-13 15:59:07,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:07,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:07,579 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:59:07,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:07,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155747639] [2024-11-13 15:59:07,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155747639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:07,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155959920] [2024-11-13 15:59:07,579 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:59:07,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:07,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:07,581 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:07,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 15:59:07,694 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-13 15:59:07,694 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:59:07,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 15:59:07,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:08,054 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:08,054 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:08,534 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:08,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155959920] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:08,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:59:08,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 30 [2024-11-13 15:59:08,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108867397] [2024-11-13 15:59:08,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:08,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-13 15:59:08,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:08,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-13 15:59:08,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=741, Unknown=0, NotChecked=0, Total=930 [2024-11-13 15:59:08,592 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-11-13 15:59:08,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 688 transitions, 14409 flow. Second operand has 31 states, 31 states have (on average 15.838709677419354) internal successors, (491), 31 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:08,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:59:08,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-11-13 15:59:08,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:59:15,143 INFO L124 PetriNetUnfolderBase]: 6826/16393 cut-off events. [2024-11-13 15:59:15,143 INFO L125 PetriNetUnfolderBase]: For 524109/525794 co-relation queries the response was YES. [2024-11-13 15:59:15,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122434 conditions, 16393 events. 6826/16393 cut-off events. For 524109/525794 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 158124 event pairs, 753 based on Foata normal form. 450/16631 useless extension candidates. Maximal degree in co-relation 122286. Up to 5049 conditions per place. [2024-11-13 15:59:15,567 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 379 selfloop transitions, 319 changer transitions 38/791 dead transitions. [2024-11-13 15:59:15,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 791 transitions, 17268 flow [2024-11-13 15:59:15,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 15:59:15,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-13 15:59:15,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 373 transitions. [2024-11-13 15:59:15,569 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47095959595959597 [2024-11-13 15:59:15,569 INFO L175 Difference]: Start difference. First operand has 421 places, 688 transitions, 14409 flow. Second operand 18 states and 373 transitions. [2024-11-13 15:59:15,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 791 transitions, 17268 flow [2024-11-13 15:59:21,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 791 transitions, 16326 flow, removed 190 selfloop flow, removed 56 redundant places. [2024-11-13 15:59:21,335 INFO L231 Difference]: Finished difference. Result has 338 places, 621 transitions, 13582 flow [2024-11-13 15:59:21,335 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=11393, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=13582, PETRI_PLACES=338, PETRI_TRANSITIONS=621} [2024-11-13 15:59:21,336 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 295 predicate places. [2024-11-13 15:59:21,336 INFO L471 AbstractCegarLoop]: Abstraction has has 338 places, 621 transitions, 13582 flow [2024-11-13 15:59:21,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 15.838709677419354) internal successors, (491), 31 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:21,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:59:21,337 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-13 15:59:21,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 15:59:21,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:21,537 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:59:21,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:21,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1752997614, now seen corresponding path program 2 times [2024-11-13 15:59:21,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:21,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735941014] [2024-11-13 15:59:21,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:21,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:21,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:21,715 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 17 proven. 29 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 15:59:21,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:21,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735941014] [2024-11-13 15:59:21,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735941014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:21,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372237288] [2024-11-13 15:59:21,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:59:21,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:21,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:21,719 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:21,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 15:59:21,829 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:59:21,830 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:59:21,830 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:59:21,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:21,902 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-13 15:59:21,902 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:21,969 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-13 15:59:21,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372237288] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:21,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:59:21,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 3, 3] total 12 [2024-11-13 15:59:21,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326875386] [2024-11-13 15:59:21,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:21,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 15:59:21,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:21,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 15:59:21,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-13 15:59:22,022 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-11-13 15:59:22,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 621 transitions, 13582 flow. Second operand has 13 states, 13 states have (on average 12.846153846153847) internal successors, (167), 13 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) [2024-11-13 15:59:22,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:59:22,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-11-13 15:59:22,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:59:28,392 INFO L124 PetriNetUnfolderBase]: 8851/17784 cut-off events. [2024-11-13 15:59:28,392 INFO L125 PetriNetUnfolderBase]: For 497581/500400 co-relation queries the response was YES. [2024-11-13 15:59:28,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134599 conditions, 17784 events. 8851/17784 cut-off events. For 497581/500400 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 150655 event pairs, 1866 based on Foata normal form. 874/18500 useless extension candidates. Maximal degree in co-relation 134492. Up to 7382 conditions per place. [2024-11-13 15:59:28,772 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 952 selfloop transitions, 18 changer transitions 55/1065 dead transitions. [2024-11-13 15:59:28,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 1065 transitions, 26593 flow [2024-11-13 15:59:28,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 15:59:28,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-13 15:59:28,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 275 transitions. [2024-11-13 15:59:28,774 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-11-13 15:59:28,774 INFO L175 Difference]: Start difference. First operand has 338 places, 621 transitions, 13582 flow. Second operand 18 states and 275 transitions. [2024-11-13 15:59:28,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 1065 transitions, 26593 flow [2024-11-13 15:59:33,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 1065 transitions, 24664 flow, removed 302 selfloop flow, removed 33 redundant places. [2024-11-13 15:59:33,063 INFO L231 Difference]: Finished difference. Result has 299 places, 570 transitions, 11559 flow [2024-11-13 15:59:33,063 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=11589, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=11559, PETRI_PLACES=299, PETRI_TRANSITIONS=570} [2024-11-13 15:59:33,064 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 256 predicate places. [2024-11-13 15:59:33,064 INFO L471 AbstractCegarLoop]: Abstraction has has 299 places, 570 transitions, 11559 flow [2024-11-13 15:59:33,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.846153846153847) internal successors, (167), 13 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) [2024-11-13 15:59:33,064 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:59:33,064 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:33,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-13 15:59:33,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-13 15:59:33,265 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:59:33,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:33,265 INFO L85 PathProgramCache]: Analyzing trace with hash 358593665, now seen corresponding path program 7 times [2024-11-13 15:59:33,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:33,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987430259] [2024-11-13 15:59:33,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:33,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:34,143 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:34,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:34,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987430259] [2024-11-13 15:59:34,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987430259] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:34,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873337287] [2024-11-13 15:59:34,144 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:59:34,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:34,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:34,146 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:34,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 15:59:34,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:34,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 15:59:34,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:34,992 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-13 15:59:34,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-13 15:59:35,028 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:35,029 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:35,114 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:59:35,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2024-11-13 15:59:36,353 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:36,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873337287] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:36,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:59:36,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 48 [2024-11-13 15:59:36,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13474482] [2024-11-13 15:59:36,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:36,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-13 15:59:36,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:36,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-13 15:59:36,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=2138, Unknown=0, NotChecked=0, Total=2450 [2024-11-13 15:59:36,622 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-11-13 15:59:36,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 570 transitions, 11559 flow. Second operand has 50 states, 50 states have (on average 11.56) internal successors, (578), 50 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:36,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:59:36,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-11-13 15:59:36,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:59:50,156 INFO L124 PetriNetUnfolderBase]: 11630/24725 cut-off events. [2024-11-13 15:59:50,156 INFO L125 PetriNetUnfolderBase]: For 602957/603577 co-relation queries the response was YES. [2024-11-13 15:59:50,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168556 conditions, 24725 events. 11630/24725 cut-off events. For 602957/603577 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 234279 event pairs, 478 based on Foata normal form. 831/25416 useless extension candidates. Maximal degree in co-relation 168460. Up to 4469 conditions per place. [2024-11-13 15:59:51,019 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 603 selfloop transitions, 689 changer transitions 22/1326 dead transitions. [2024-11-13 15:59:51,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 1326 transitions, 26841 flow [2024-11-13 15:59:51,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-13 15:59:51,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2024-11-13 15:59:51,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 1063 transitions. [2024-11-13 15:59:51,022 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40265151515151515 [2024-11-13 15:59:51,022 INFO L175 Difference]: Start difference. First operand has 299 places, 570 transitions, 11559 flow. Second operand 60 states and 1063 transitions. [2024-11-13 15:59:51,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 1326 transitions, 26841 flow [2024-11-13 15:59:57,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 1326 transitions, 25341 flow, removed 288 selfloop flow, removed 13 redundant places. [2024-11-13 15:59:57,445 INFO L231 Difference]: Finished difference. Result has 347 places, 892 transitions, 20661 flow [2024-11-13 15:59:57,446 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=10915, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=405, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=20661, PETRI_PLACES=347, PETRI_TRANSITIONS=892} [2024-11-13 15:59:57,446 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 304 predicate places. [2024-11-13 15:59:57,446 INFO L471 AbstractCegarLoop]: Abstraction has has 347 places, 892 transitions, 20661 flow [2024-11-13 15:59:57,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 11.56) internal successors, (578), 50 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:57,447 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:59:57,447 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:57,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-13 15:59:57,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:57,648 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-13 15:59:57,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:57,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1321586631, now seen corresponding path program 8 times [2024-11-13 15:59:57,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:57,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506685140] [2024-11-13 15:59:57,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:57,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:58,513 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:58,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:58,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506685140] [2024-11-13 15:59:58,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506685140] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:58,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575309645] [2024-11-13 15:59:58,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:59:58,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:58,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:58,515 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:58,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf791875-a593-42b1-8dd7-94a3802d7f5d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 15:59:58,642 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:59:58,642 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:59:58,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-13 15:59:58,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:58,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-13 15:59:59,690 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-13 15:59:59,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-13 15:59:59,732 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:59,732 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:00:01,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2024-11-13 16:00:01,265 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-13 16:00:01,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 47 [2024-11-13 16:00:01,741 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:01,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575309645] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:00:01,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:00:01,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 48 [2024-11-13 16:00:01,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128261219] [2024-11-13 16:00:01,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:00:01,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-13 16:00:01,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:00:01,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-13 16:00:01,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=2162, Unknown=0, NotChecked=0, Total=2450 [2024-11-13 16:00:02,086 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-11-13 16:00:02,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 892 transitions, 20661 flow. Second operand has 50 states, 50 states have (on average 11.56) internal successors, (578), 50 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:00:02,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:00:02,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-11-13 16:00:02,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand