./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 faddac23864cc4e42f962ac43a8d0f59593853dbb1d55e3baabe0c76b2187dd4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:42:45,465 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:42:45,518 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:42:45,524 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:42:45,527 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:42:45,541 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:42:45,542 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:42:45,542 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:42:45,542 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:42:45,542 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:42:45,542 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:42:45,542 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:42:45,542 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:42:45,542 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:42:45,542 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:42:45,543 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:42:45,543 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:42:45,543 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:42:45,543 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:42:45,543 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:42:45,543 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:42:45,543 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:42:45,543 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:42:45,543 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:42:45,543 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:42:45,543 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:42:45,543 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:42:45,543 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:42:45,543 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:42:45,543 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:42:45,543 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:42:45,543 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:42:45,543 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:42:45,543 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:42:45,543 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:42:45,544 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:42:45,544 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:42:45,544 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:42:45,544 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:42:45,544 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:42:45,544 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:42:45,544 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:42:45,544 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:42:45,544 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:42:45,544 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:42:45,544 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> faddac23864cc4e42f962ac43a8d0f59593853dbb1d55e3baabe0c76b2187dd4 [2025-03-17 19:42:45,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:42:45,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:42:45,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:42:45,784 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:42:45,784 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:42:45,786 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2025-03-17 19:42:46,935 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ead45cc5/1adc4f9cfe7d4fd38a6b030c40ee05ff/FLAG6b3df3552 [2025-03-17 19:42:47,180 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:42:47,180 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2025-03-17 19:42:47,187 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ead45cc5/1adc4f9cfe7d4fd38a6b030c40ee05ff/FLAG6b3df3552 [2025-03-17 19:42:47,512 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ead45cc5/1adc4f9cfe7d4fd38a6b030c40ee05ff [2025-03-17 19:42:47,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:42:47,515 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:42:47,516 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:42:47,516 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:42:47,518 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:42:47,519 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:42:47" (1/1) ... [2025-03-17 19:42:47,519 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a8cba8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:47, skipping insertion in model container [2025-03-17 19:42:47,519 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:42:47" (1/1) ... [2025-03-17 19:42:47,530 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:42:47,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:42:47,658 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:42:47,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:42:47,693 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:42:47,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:47 WrapperNode [2025-03-17 19:42:47,694 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:42:47,695 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:42:47,695 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:42:47,695 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:42:47,699 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:47" (1/1) ... [2025-03-17 19:42:47,706 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:47" (1/1) ... [2025-03-17 19:42:47,725 INFO L138 Inliner]: procedures = 22, calls = 32, calls flagged for inlining = 18, calls inlined = 32, statements flattened = 388 [2025-03-17 19:42:47,726 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:42:47,726 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:42:47,726 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:42:47,726 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:42:47,732 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:47" (1/1) ... [2025-03-17 19:42:47,732 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:47" (1/1) ... [2025-03-17 19:42:47,735 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:47" (1/1) ... [2025-03-17 19:42:47,750 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 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]. [2025-03-17 19:42:47,750 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:47" (1/1) ... [2025-03-17 19:42:47,750 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:47" (1/1) ... [2025-03-17 19:42:47,756 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:47" (1/1) ... [2025-03-17 19:42:47,757 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:47" (1/1) ... [2025-03-17 19:42:47,758 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:47" (1/1) ... [2025-03-17 19:42:47,759 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:47" (1/1) ... [2025-03-17 19:42:47,761 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:42:47,761 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:42:47,761 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:42:47,761 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:42:47,762 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:47" (1/1) ... [2025-03-17 19:42:47,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:42:47,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:42:47,791 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 19:42:47,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 19:42:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:42:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 19:42:47,810 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 19:42:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 19:42:47,811 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 19:42:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:42:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 19:42:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 19:42:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 19:42:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 19:42:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:42:47,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:42:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 19:42:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 19:42:47,812 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 19:42:47,901 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:42:47,902 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:42:48,373 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:42:48,373 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:42:48,624 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:42:48,624 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:42:48,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:42:48 BoogieIcfgContainer [2025-03-17 19:42:48,625 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:42:48,627 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:42:48,627 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:42:48,630 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:42:48,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:42:47" (1/3) ... [2025-03-17 19:42:48,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4103752c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:42:48, skipping insertion in model container [2025-03-17 19:42:48,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:47" (2/3) ... [2025-03-17 19:42:48,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4103752c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:42:48, skipping insertion in model container [2025-03-17 19:42:48,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:42:48" (3/3) ... [2025-03-17 19:42:48,633 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2025-03-17 19:42:48,644 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:42:48,645 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-misc-1.wvr.c that has 3 procedures, 160 locations, 1 initial locations, 3 loop locations, and 54 error locations. [2025-03-17 19:42:48,646 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:42:48,716 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-17 19:42:48,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 180 transitions, 374 flow [2025-03-17 19:42:48,800 INFO L124 PetriNetUnfolderBase]: 21/178 cut-off events. [2025-03-17 19:42:48,801 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 19:42:48,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 178 events. 21/178 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 838 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 169. Up to 2 conditions per place. [2025-03-17 19:42:48,807 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 180 transitions, 374 flow [2025-03-17 19:42:48,813 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 176 transitions, 361 flow [2025-03-17 19:42:48,820 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:42:48,831 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;@8998ae2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:42:48,831 INFO L334 AbstractCegarLoop]: Starting to check reachability of 108 error locations. [2025-03-17 19:42:48,836 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:42:48,836 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-17 19:42:48,836 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:42:48,836 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:48,836 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 19:42:48,837 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-17 19:42:48,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:48,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1149423, now seen corresponding path program 1 times [2025-03-17 19:42:48,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:48,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298775175] [2025-03-17 19:42:48,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:48,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:48,900 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:42:48,920 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:42:48,921 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:48,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:49,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:49,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:49,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298775175] [2025-03-17 19:42:49,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298775175] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:49,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:49,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:42:49,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513653862] [2025-03-17 19:42:49,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:49,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:49,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:49,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:49,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:49,096 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 180 [2025-03-17 19:42:49,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 176 transitions, 361 flow. Second operand has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:42:49,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:49,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 180 [2025-03-17 19:42:49,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:49,684 INFO L124 PetriNetUnfolderBase]: 2273/5775 cut-off events. [2025-03-17 19:42:49,684 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2025-03-17 19:42:49,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9099 conditions, 5775 events. 2273/5775 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 53334 event pairs, 1252 based on Foata normal form. 1/4378 useless extension candidates. Maximal degree in co-relation 8938. Up to 3254 conditions per place. [2025-03-17 19:42:49,714 INFO L140 encePairwiseOnDemand]: 174/180 looper letters, 60 selfloop transitions, 4 changer transitions 0/179 dead transitions. [2025-03-17 19:42:49,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 179 transitions, 495 flow [2025-03-17 19:42:49,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:49,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:49,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 534 transitions. [2025-03-17 19:42:49,729 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7416666666666667 [2025-03-17 19:42:49,731 INFO L175 Difference]: Start difference. First operand has 162 places, 176 transitions, 361 flow. Second operand 4 states and 534 transitions. [2025-03-17 19:42:49,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 179 transitions, 495 flow [2025-03-17 19:42:49,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 179 transitions, 490 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:42:49,739 INFO L231 Difference]: Finished difference. Result has 164 places, 179 transitions, 385 flow [2025-03-17 19:42:49,741 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=385, PETRI_PLACES=164, PETRI_TRANSITIONS=179} [2025-03-17 19:42:49,744 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 2 predicate places. [2025-03-17 19:42:49,745 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 179 transitions, 385 flow [2025-03-17 19:42:49,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:42:49,746 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:49,746 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-17 19:42:49,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:42:49,746 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-17 19:42:49,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:49,747 INFO L85 PathProgramCache]: Analyzing trace with hash -116276346, now seen corresponding path program 1 times [2025-03-17 19:42:49,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:49,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989968973] [2025-03-17 19:42:49,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:49,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:49,756 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:42:49,771 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:42:49,774 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:49,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:49,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:49,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:49,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989968973] [2025-03-17 19:42:49,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989968973] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:42:49,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924920845] [2025-03-17 19:42:49,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:49,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:42:49,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:42:49,883 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:42:49,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 19:42:49,929 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:42:49,939 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:42:49,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:49,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:49,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:42:49,947 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:42:49,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:49,987 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:42:49,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924920845] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:49,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:42:49,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-17 19:42:49,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834853444] [2025-03-17 19:42:49,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:49,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:42:49,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:49,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:42:49,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:42:49,998 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 180 [2025-03-17 19:42:49,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 179 transitions, 385 flow. Second operand has 6 states, 6 states have (on average 117.83333333333333) internal successors, (707), 6 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:42:50,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:50,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 180 [2025-03-17 19:42:50,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:50,492 INFO L124 PetriNetUnfolderBase]: 2273/5774 cut-off events. [2025-03-17 19:42:50,492 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2025-03-17 19:42:50,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9087 conditions, 5774 events. 2273/5774 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 53264 event pairs, 1252 based on Foata normal form. 1/4378 useless extension candidates. Maximal degree in co-relation 9060. Up to 3249 conditions per place. [2025-03-17 19:42:50,516 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 56 selfloop transitions, 7 changer transitions 0/178 dead transitions. [2025-03-17 19:42:50,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 178 transitions, 507 flow [2025-03-17 19:42:50,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:42:50,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:42:50,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 766 transitions. [2025-03-17 19:42:50,519 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7092592592592593 [2025-03-17 19:42:50,519 INFO L175 Difference]: Start difference. First operand has 164 places, 179 transitions, 385 flow. Second operand 6 states and 766 transitions. [2025-03-17 19:42:50,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 178 transitions, 507 flow [2025-03-17 19:42:50,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 178 transitions, 504 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:42:50,522 INFO L231 Difference]: Finished difference. Result has 167 places, 178 transitions, 392 flow [2025-03-17 19:42:50,522 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=392, PETRI_PLACES=167, PETRI_TRANSITIONS=178} [2025-03-17 19:42:50,522 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 5 predicate places. [2025-03-17 19:42:50,523 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 178 transitions, 392 flow [2025-03-17 19:42:50,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.83333333333333) internal successors, (707), 6 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:42:50,523 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:50,523 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-17 19:42:50,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 19:42:50,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:42:50,724 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-17 19:42:50,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:50,724 INFO L85 PathProgramCache]: Analyzing trace with hash 690401574, now seen corresponding path program 1 times [2025-03-17 19:42:50,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:50,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610679270] [2025-03-17 19:42:50,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:50,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:50,733 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:42:50,760 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:42:50,760 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:50,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:50,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:50,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:50,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610679270] [2025-03-17 19:42:50,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610679270] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:42:50,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196690661] [2025-03-17 19:42:50,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:50,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:42:50,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:42:50,840 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:42:50,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 19:42:50,887 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:42:50,900 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:42:50,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:50,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:50,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:42:50,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:42:50,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:50,929 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:42:50,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:50,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196690661] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:42:50,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:42:50,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-17 19:42:50,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92843336] [2025-03-17 19:42:50,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:42:50,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 19:42:50,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:50,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 19:42:50,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:42:50,976 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 180 [2025-03-17 19:42:50,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 178 transitions, 392 flow. Second operand has 12 states, 12 states have (on average 118.08333333333333) internal successors, (1417), 12 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:42:50,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:50,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 180 [2025-03-17 19:42:50,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:51,485 INFO L124 PetriNetUnfolderBase]: 2276/5786 cut-off events. [2025-03-17 19:42:51,485 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2025-03-17 19:42:51,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9131 conditions, 5786 events. 2276/5786 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 53323 event pairs, 1252 based on Foata normal form. 3/4390 useless extension candidates. Maximal degree in co-relation 9061. Up to 3256 conditions per place. [2025-03-17 19:42:51,512 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 59 selfloop transitions, 13 changer transitions 0/187 dead transitions. [2025-03-17 19:42:51,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 187 transitions, 590 flow [2025-03-17 19:42:51,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:42:51,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:42:51,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1245 transitions. [2025-03-17 19:42:51,517 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6916666666666667 [2025-03-17 19:42:51,518 INFO L175 Difference]: Start difference. First operand has 167 places, 178 transitions, 392 flow. Second operand 10 states and 1245 transitions. [2025-03-17 19:42:51,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 187 transitions, 590 flow [2025-03-17 19:42:51,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 187 transitions, 544 flow, removed 8 selfloop flow, removed 5 redundant places. [2025-03-17 19:42:51,523 INFO L231 Difference]: Finished difference. Result has 174 places, 187 transitions, 444 flow [2025-03-17 19:42:51,524 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=444, PETRI_PLACES=174, PETRI_TRANSITIONS=187} [2025-03-17 19:42:51,525 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 12 predicate places. [2025-03-17 19:42:51,525 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 187 transitions, 444 flow [2025-03-17 19:42:51,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 118.08333333333333) internal successors, (1417), 12 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:42:51,527 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:51,527 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:51,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 19:42:51,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-17 19:42:51,731 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-17 19:42:51,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:51,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1030428064, now seen corresponding path program 1 times [2025-03-17 19:42:51,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:51,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297982661] [2025-03-17 19:42:51,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:51,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:51,737 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:42:51,741 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:42:51,742 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:51,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:51,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:51,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:51,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297982661] [2025-03-17 19:42:51,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297982661] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:51,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:51,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:42:51,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3669090] [2025-03-17 19:42:51,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:51,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:51,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:51,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:51,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:51,826 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 180 [2025-03-17 19:42:51,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 187 transitions, 444 flow. Second operand has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:42:51,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:51,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 180 [2025-03-17 19:42:51,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:52,732 INFO L124 PetriNetUnfolderBase]: 5797/12626 cut-off events. [2025-03-17 19:42:52,733 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2025-03-17 19:42:52,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21269 conditions, 12626 events. 5797/12626 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 112080 event pairs, 1342 based on Foata normal form. 0/10160 useless extension candidates. Maximal degree in co-relation 21235. Up to 4264 conditions per place. [2025-03-17 19:42:52,787 INFO L140 encePairwiseOnDemand]: 165/180 looper letters, 175 selfloop transitions, 23 changer transitions 0/306 dead transitions. [2025-03-17 19:42:52,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 306 transitions, 1085 flow [2025-03-17 19:42:52,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:42:52,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:42:52,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 743 transitions. [2025-03-17 19:42:52,790 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8255555555555556 [2025-03-17 19:42:52,790 INFO L175 Difference]: Start difference. First operand has 174 places, 187 transitions, 444 flow. Second operand 5 states and 743 transitions. [2025-03-17 19:42:52,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 306 transitions, 1085 flow [2025-03-17 19:42:52,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 306 transitions, 1074 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-17 19:42:52,795 INFO L231 Difference]: Finished difference. Result has 180 places, 203 transitions, 585 flow [2025-03-17 19:42:52,796 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=585, PETRI_PLACES=180, PETRI_TRANSITIONS=203} [2025-03-17 19:42:52,797 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 18 predicate places. [2025-03-17 19:42:52,797 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 203 transitions, 585 flow [2025-03-17 19:42:52,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:42:52,797 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:52,798 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:52,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:42:52,799 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-17 19:42:52,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:52,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1030429090, now seen corresponding path program 1 times [2025-03-17 19:42:52,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:52,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74643965] [2025-03-17 19:42:52,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:52,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:52,807 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:42:52,811 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:42:52,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:52,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:52,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:52,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:52,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74643965] [2025-03-17 19:42:52,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74643965] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:52,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:52,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:42:52,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312345213] [2025-03-17 19:42:52,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:52,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:52,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:52,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:52,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:52,921 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 180 [2025-03-17 19:42:52,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 203 transitions, 585 flow. Second operand has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:42:52,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:52,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 180 [2025-03-17 19:42:52,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:54,085 INFO L124 PetriNetUnfolderBase]: 9221/19239 cut-off events. [2025-03-17 19:42:54,085 INFO L125 PetriNetUnfolderBase]: For 1756/1756 co-relation queries the response was YES. [2025-03-17 19:42:54,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35986 conditions, 19239 events. 9221/19239 cut-off events. For 1756/1756 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 179050 event pairs, 1993 based on Foata normal form. 624/16544 useless extension candidates. Maximal degree in co-relation 35947. Up to 5916 conditions per place. [2025-03-17 19:42:54,171 INFO L140 encePairwiseOnDemand]: 148/180 looper letters, 149 selfloop transitions, 27 changer transitions 0/268 dead transitions. [2025-03-17 19:42:54,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 268 transitions, 1079 flow [2025-03-17 19:42:54,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:54,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:54,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 543 transitions. [2025-03-17 19:42:54,173 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7541666666666667 [2025-03-17 19:42:54,173 INFO L175 Difference]: Start difference. First operand has 180 places, 203 transitions, 585 flow. Second operand 4 states and 543 transitions. [2025-03-17 19:42:54,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 268 transitions, 1079 flow [2025-03-17 19:42:54,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 268 transitions, 1079 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:42:54,196 INFO L231 Difference]: Finished difference. Result has 181 places, 208 transitions, 727 flow [2025-03-17 19:42:54,196 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=727, PETRI_PLACES=181, PETRI_TRANSITIONS=208} [2025-03-17 19:42:54,197 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 19 predicate places. [2025-03-17 19:42:54,197 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 208 transitions, 727 flow [2025-03-17 19:42:54,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:42:54,197 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:54,197 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:54,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:42:54,197 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-17 19:42:54,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:54,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1878531870, now seen corresponding path program 1 times [2025-03-17 19:42:54,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:54,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418532276] [2025-03-17 19:42:54,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:54,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:54,203 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:42:54,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:42:54,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:54,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:54,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:54,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:54,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418532276] [2025-03-17 19:42:54,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418532276] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:54,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:54,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:42:54,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802287946] [2025-03-17 19:42:54,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:54,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:54,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:54,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:54,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:54,294 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 180 [2025-03-17 19:42:54,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 208 transitions, 727 flow. Second operand has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:42:54,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:54,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 180 [2025-03-17 19:42:54,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:55,272 INFO L124 PetriNetUnfolderBase]: 5516/14477 cut-off events. [2025-03-17 19:42:55,273 INFO L125 PetriNetUnfolderBase]: For 7175/7457 co-relation queries the response was YES. [2025-03-17 19:42:55,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27928 conditions, 14477 events. 5516/14477 cut-off events. For 7175/7457 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 146846 event pairs, 3258 based on Foata normal form. 165/12022 useless extension candidates. Maximal degree in co-relation 27887. Up to 5975 conditions per place. [2025-03-17 19:42:55,354 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 113 selfloop transitions, 5 changer transitions 0/238 dead transitions. [2025-03-17 19:42:55,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 238 transitions, 1033 flow [2025-03-17 19:42:55,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:55,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:55,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 569 transitions. [2025-03-17 19:42:55,359 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7902777777777777 [2025-03-17 19:42:55,359 INFO L175 Difference]: Start difference. First operand has 181 places, 208 transitions, 727 flow. Second operand 4 states and 569 transitions. [2025-03-17 19:42:55,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 238 transitions, 1033 flow [2025-03-17 19:42:55,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 238 transitions, 1014 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:42:55,388 INFO L231 Difference]: Finished difference. Result has 185 places, 209 transitions, 738 flow [2025-03-17 19:42:55,389 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=738, PETRI_PLACES=185, PETRI_TRANSITIONS=209} [2025-03-17 19:42:55,389 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 23 predicate places. [2025-03-17 19:42:55,389 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 209 transitions, 738 flow [2025-03-17 19:42:55,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:42:55,390 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:55,390 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:55,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 19:42:55,390 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-17 19:42:55,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:55,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1896069880, now seen corresponding path program 1 times [2025-03-17 19:42:55,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:55,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850561297] [2025-03-17 19:42:55,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:55,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:55,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:42:55,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:42:55,404 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:55,405 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:55,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:55,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:55,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850561297] [2025-03-17 19:42:55,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850561297] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:55,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:55,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:42:55,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063817125] [2025-03-17 19:42:55,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:55,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:55,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:55,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:55,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:55,514 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 180 [2025-03-17 19:42:55,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 209 transitions, 738 flow. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 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) [2025-03-17 19:42:55,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:55,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 180 [2025-03-17 19:42:55,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:56,710 INFO L124 PetriNetUnfolderBase]: 7840/17130 cut-off events. [2025-03-17 19:42:56,710 INFO L125 PetriNetUnfolderBase]: For 8622/8672 co-relation queries the response was YES. [2025-03-17 19:42:56,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35782 conditions, 17130 events. 7840/17130 cut-off events. For 8622/8672 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 159798 event pairs, 1208 based on Foata normal form. 154/14751 useless extension candidates. Maximal degree in co-relation 35739. Up to 5464 conditions per place. [2025-03-17 19:42:56,785 INFO L140 encePairwiseOnDemand]: 164/180 looper letters, 187 selfloop transitions, 30 changer transitions 0/321 dead transitions. [2025-03-17 19:42:56,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 321 transitions, 1457 flow [2025-03-17 19:42:56,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:42:56,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:42:56,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 703 transitions. [2025-03-17 19:42:56,787 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7811111111111111 [2025-03-17 19:42:56,788 INFO L175 Difference]: Start difference. First operand has 185 places, 209 transitions, 738 flow. Second operand 5 states and 703 transitions. [2025-03-17 19:42:56,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 321 transitions, 1457 flow [2025-03-17 19:42:56,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 321 transitions, 1454 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:42:56,834 INFO L231 Difference]: Finished difference. Result has 190 places, 218 transitions, 876 flow [2025-03-17 19:42:56,835 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=876, PETRI_PLACES=190, PETRI_TRANSITIONS=218} [2025-03-17 19:42:56,835 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 28 predicate places. [2025-03-17 19:42:56,835 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 218 transitions, 876 flow [2025-03-17 19:42:56,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 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) [2025-03-17 19:42:56,835 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:56,836 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:56,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 19:42:56,836 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-17 19:42:56,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:56,836 INFO L85 PathProgramCache]: Analyzing trace with hash 235669496, now seen corresponding path program 1 times [2025-03-17 19:42:56,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:56,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789037556] [2025-03-17 19:42:56,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:56,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:56,843 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:42:56,847 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:42:56,848 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:56,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:56,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:56,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:56,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789037556] [2025-03-17 19:42:56,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789037556] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:56,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:56,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:42:56,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861839458] [2025-03-17 19:42:56,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:56,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:56,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:56,873 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:56,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:56,926 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 180 [2025-03-17 19:42:56,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 218 transitions, 876 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:42:56,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:56,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 180 [2025-03-17 19:42:56,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:59,143 INFO L124 PetriNetUnfolderBase]: 15511/34259 cut-off events. [2025-03-17 19:42:59,143 INFO L125 PetriNetUnfolderBase]: For 31175/32332 co-relation queries the response was YES. [2025-03-17 19:42:59,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73615 conditions, 34259 events. 15511/34259 cut-off events. For 31175/32332 co-relation queries the response was YES. Maximal size of possible extension queue 959. Compared 347633 event pairs, 2847 based on Foata normal form. 1058/29504 useless extension candidates. Maximal degree in co-relation 73568. Up to 8887 conditions per place. [2025-03-17 19:42:59,333 INFO L140 encePairwiseOnDemand]: 162/180 looper letters, 263 selfloop transitions, 18 changer transitions 0/393 dead transitions. [2025-03-17 19:42:59,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 393 transitions, 2349 flow [2025-03-17 19:42:59,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:42:59,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:42:59,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 712 transitions. [2025-03-17 19:42:59,335 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7911111111111111 [2025-03-17 19:42:59,335 INFO L175 Difference]: Start difference. First operand has 190 places, 218 transitions, 876 flow. Second operand 5 states and 712 transitions. [2025-03-17 19:42:59,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 393 transitions, 2349 flow [2025-03-17 19:42:59,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 393 transitions, 2349 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:42:59,410 INFO L231 Difference]: Finished difference. Result has 197 places, 231 transitions, 992 flow [2025-03-17 19:42:59,410 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=992, PETRI_PLACES=197, PETRI_TRANSITIONS=231} [2025-03-17 19:42:59,410 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 35 predicate places. [2025-03-17 19:42:59,411 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 231 transitions, 992 flow [2025-03-17 19:42:59,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:42:59,411 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:59,411 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:59,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 19:42:59,411 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err25ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-17 19:42:59,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:59,412 INFO L85 PathProgramCache]: Analyzing trace with hash 235670522, now seen corresponding path program 1 times [2025-03-17 19:42:59,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:59,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631082129] [2025-03-17 19:42:59,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:59,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:59,418 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:42:59,422 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:42:59,422 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:59,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:59,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:59,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:59,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631082129] [2025-03-17 19:42:59,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631082129] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:59,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:59,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:42:59,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728451511] [2025-03-17 19:42:59,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:59,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:59,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:59,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:59,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:59,517 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 180 [2025-03-17 19:42:59,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 231 transitions, 992 flow. Second operand has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:42:59,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:59,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 180 [2025-03-17 19:42:59,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:03,053 INFO L124 PetriNetUnfolderBase]: 23703/50633 cut-off events. [2025-03-17 19:43:03,053 INFO L125 PetriNetUnfolderBase]: For 56331/57924 co-relation queries the response was YES. [2025-03-17 19:43:03,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119307 conditions, 50633 events. 23703/50633 cut-off events. For 56331/57924 co-relation queries the response was YES. Maximal size of possible extension queue 1293. Compared 530585 event pairs, 5671 based on Foata normal form. 3218/48209 useless extension candidates. Maximal degree in co-relation 119257. Up to 16514 conditions per place. [2025-03-17 19:43:03,345 INFO L140 encePairwiseOnDemand]: 148/180 looper letters, 209 selfloop transitions, 29 changer transitions 0/342 dead transitions. [2025-03-17 19:43:03,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 342 transitions, 2102 flow [2025-03-17 19:43:03,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:43:03,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:43:03,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 541 transitions. [2025-03-17 19:43:03,346 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7513888888888889 [2025-03-17 19:43:03,346 INFO L175 Difference]: Start difference. First operand has 197 places, 231 transitions, 992 flow. Second operand 4 states and 541 transitions. [2025-03-17 19:43:03,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 342 transitions, 2102 flow [2025-03-17 19:43:03,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 342 transitions, 2102 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:43:03,586 INFO L231 Difference]: Finished difference. Result has 199 places, 246 transitions, 1230 flow [2025-03-17 19:43:03,587 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=980, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1230, PETRI_PLACES=199, PETRI_TRANSITIONS=246} [2025-03-17 19:43:03,587 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 37 predicate places. [2025-03-17 19:43:03,587 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 246 transitions, 1230 flow [2025-03-17 19:43:03,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:03,588 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:03,588 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:03,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 19:43:03,588 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-17 19:43:03,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:03,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1351377026, now seen corresponding path program 1 times [2025-03-17 19:43:03,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:03,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998521472] [2025-03-17 19:43:03,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:03,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:03,592 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:43:03,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:43:03,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:03,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:03,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:03,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:03,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998521472] [2025-03-17 19:43:03,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998521472] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:43:03,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:43:03,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:43:03,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425994466] [2025-03-17 19:43:03,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:43:03,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:43:03,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:03,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:43:03,626 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:43:03,686 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 180 [2025-03-17 19:43:03,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 246 transitions, 1230 flow. Second operand has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:03,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:03,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 180 [2025-03-17 19:43:03,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:07,422 INFO L124 PetriNetUnfolderBase]: 21423/46880 cut-off events. [2025-03-17 19:43:07,422 INFO L125 PetriNetUnfolderBase]: For 67561/69430 co-relation queries the response was YES. [2025-03-17 19:43:07,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119156 conditions, 46880 events. 21423/46880 cut-off events. For 67561/69430 co-relation queries the response was YES. Maximal size of possible extension queue 1130. Compared 492628 event pairs, 5909 based on Foata normal form. 2190/44612 useless extension candidates. Maximal degree in co-relation 119103. Up to 12580 conditions per place. [2025-03-17 19:43:07,750 INFO L140 encePairwiseOnDemand]: 160/180 looper letters, 200 selfloop transitions, 26 changer transitions 0/330 dead transitions. [2025-03-17 19:43:07,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 330 transitions, 2092 flow [2025-03-17 19:43:07,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:43:07,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:43:07,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 531 transitions. [2025-03-17 19:43:07,752 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7375 [2025-03-17 19:43:07,752 INFO L175 Difference]: Start difference. First operand has 199 places, 246 transitions, 1230 flow. Second operand 4 states and 531 transitions. [2025-03-17 19:43:07,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 330 transitions, 2092 flow [2025-03-17 19:43:08,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 330 transitions, 2056 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:43:08,167 INFO L231 Difference]: Finished difference. Result has 200 places, 238 transitions, 1176 flow [2025-03-17 19:43:08,168 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1176, PETRI_PLACES=200, PETRI_TRANSITIONS=238} [2025-03-17 19:43:08,168 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 38 predicate places. [2025-03-17 19:43:08,168 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 238 transitions, 1176 flow [2025-03-17 19:43:08,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:08,169 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:08,169 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:08,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 19:43:08,169 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-17 19:43:08,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:08,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1351376033, now seen corresponding path program 1 times [2025-03-17 19:43:08,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:08,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689342523] [2025-03-17 19:43:08,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:08,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:08,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:43:08,179 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:43:08,179 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:08,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:08,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:08,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:08,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689342523] [2025-03-17 19:43:08,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689342523] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:43:08,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:43:08,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:43:08,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844199256] [2025-03-17 19:43:08,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:43:08,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:43:08,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:08,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:43:08,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:43:08,314 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 180 [2025-03-17 19:43:08,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 238 transitions, 1176 flow. Second operand has 5 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:08,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:08,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 180 [2025-03-17 19:43:08,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:14,564 INFO L124 PetriNetUnfolderBase]: 36406/77340 cut-off events. [2025-03-17 19:43:14,564 INFO L125 PetriNetUnfolderBase]: For 91077/94488 co-relation queries the response was YES. [2025-03-17 19:43:14,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198108 conditions, 77340 events. 36406/77340 cut-off events. For 91077/94488 co-relation queries the response was YES. Maximal size of possible extension queue 1332. Compared 822331 event pairs, 8409 based on Foata normal form. 2494/75261 useless extension candidates. Maximal degree in co-relation 198056. Up to 20269 conditions per place. [2025-03-17 19:43:15,208 INFO L140 encePairwiseOnDemand]: 159/180 looper letters, 358 selfloop transitions, 42 changer transitions 0/512 dead transitions. [2025-03-17 19:43:15,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 512 transitions, 3409 flow [2025-03-17 19:43:15,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:43:15,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:43:15,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 988 transitions. [2025-03-17 19:43:15,211 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7841269841269841 [2025-03-17 19:43:15,211 INFO L175 Difference]: Start difference. First operand has 200 places, 238 transitions, 1176 flow. Second operand 7 states and 988 transitions. [2025-03-17 19:43:15,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 512 transitions, 3409 flow [2025-03-17 19:43:15,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 512 transitions, 3348 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:43:15,546 INFO L231 Difference]: Finished difference. Result has 208 places, 260 transitions, 1417 flow [2025-03-17 19:43:15,546 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1417, PETRI_PLACES=208, PETRI_TRANSITIONS=260} [2025-03-17 19:43:15,547 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 46 predicate places. [2025-03-17 19:43:15,547 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 260 transitions, 1417 flow [2025-03-17 19:43:15,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:15,547 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:15,547 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:15,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 19:43:15,547 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-17 19:43:15,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:15,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1284147176, now seen corresponding path program 1 times [2025-03-17 19:43:15,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:15,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646893168] [2025-03-17 19:43:15,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:15,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:15,553 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:43:15,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:43:15,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:15,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:15,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:15,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:15,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646893168] [2025-03-17 19:43:15,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646893168] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:43:15,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:43:15,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:43:15,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949678038] [2025-03-17 19:43:15,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:43:15,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:43:15,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:15,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:43:15,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:43:15,612 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 180 [2025-03-17 19:43:15,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 260 transitions, 1417 flow. Second operand has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:15,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:15,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 180 [2025-03-17 19:43:15,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:20,592 INFO L124 PetriNetUnfolderBase]: 22729/58415 cut-off events. [2025-03-17 19:43:20,593 INFO L125 PetriNetUnfolderBase]: For 88034/90731 co-relation queries the response was YES. [2025-03-17 19:43:20,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147882 conditions, 58415 events. 22729/58415 cut-off events. For 88034/90731 co-relation queries the response was YES. Maximal size of possible extension queue 1048. Compared 678858 event pairs, 13147 based on Foata normal form. 1345/53690 useless extension candidates. Maximal degree in co-relation 147825. Up to 24507 conditions per place. [2025-03-17 19:43:21,225 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 170 selfloop transitions, 5 changer transitions 0/319 dead transitions. [2025-03-17 19:43:21,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 319 transitions, 2165 flow [2025-03-17 19:43:21,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:43:21,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:43:21,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 570 transitions. [2025-03-17 19:43:21,227 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2025-03-17 19:43:21,227 INFO L175 Difference]: Start difference. First operand has 208 places, 260 transitions, 1417 flow. Second operand 4 states and 570 transitions. [2025-03-17 19:43:21,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 319 transitions, 2165 flow [2025-03-17 19:43:21,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 319 transitions, 2165 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:43:21,563 INFO L231 Difference]: Finished difference. Result has 213 places, 261 transitions, 1448 flow [2025-03-17 19:43:21,563 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1417, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1448, PETRI_PLACES=213, PETRI_TRANSITIONS=261} [2025-03-17 19:43:21,563 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 51 predicate places. [2025-03-17 19:43:21,563 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 261 transitions, 1448 flow [2025-03-17 19:43:21,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:21,564 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:21,564 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:21,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 19:43:21,564 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-17 19:43:21,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:21,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1284178986, now seen corresponding path program 1 times [2025-03-17 19:43:21,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:21,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481502509] [2025-03-17 19:43:21,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:21,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:21,569 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:43:21,574 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:43:21,574 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:21,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:21,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:21,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:21,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481502509] [2025-03-17 19:43:21,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481502509] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:43:21,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:43:21,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:43:21,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577120525] [2025-03-17 19:43:21,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:43:21,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:43:21,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:21,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:43:21,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:43:21,657 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 180 [2025-03-17 19:43:21,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 261 transitions, 1448 flow. Second operand has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:21,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:21,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 180 [2025-03-17 19:43:21,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:28,188 INFO L124 PetriNetUnfolderBase]: 30181/73609 cut-off events. [2025-03-17 19:43:28,188 INFO L125 PetriNetUnfolderBase]: For 122400/126281 co-relation queries the response was YES. [2025-03-17 19:43:28,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184993 conditions, 73609 events. 30181/73609 cut-off events. For 122400/126281 co-relation queries the response was YES. Maximal size of possible extension queue 1408. Compared 856762 event pairs, 4837 based on Foata normal form. 2190/68524 useless extension candidates. Maximal degree in co-relation 184934. Up to 17481 conditions per place. [2025-03-17 19:43:28,944 INFO L140 encePairwiseOnDemand]: 163/180 looper letters, 304 selfloop transitions, 28 changer transitions 0/464 dead transitions. [2025-03-17 19:43:28,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 464 transitions, 3409 flow [2025-03-17 19:43:28,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:43:28,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:43:28,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 726 transitions. [2025-03-17 19:43:28,946 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8066666666666666 [2025-03-17 19:43:28,946 INFO L175 Difference]: Start difference. First operand has 213 places, 261 transitions, 1448 flow. Second operand 5 states and 726 transitions. [2025-03-17 19:43:28,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 464 transitions, 3409 flow [2025-03-17 19:43:29,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 464 transitions, 3406 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:43:29,253 INFO L231 Difference]: Finished difference. Result has 219 places, 271 transitions, 1606 flow [2025-03-17 19:43:29,253 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1606, PETRI_PLACES=219, PETRI_TRANSITIONS=271} [2025-03-17 19:43:29,254 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 57 predicate places. [2025-03-17 19:43:29,254 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 271 transitions, 1606 flow [2025-03-17 19:43:29,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:29,254 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:29,254 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:29,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 19:43:29,254 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-17 19:43:29,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:29,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1558137831, now seen corresponding path program 1 times [2025-03-17 19:43:29,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:29,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959300760] [2025-03-17 19:43:29,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:29,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:29,259 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:43:29,265 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:43:29,265 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:29,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:29,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:29,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:29,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959300760] [2025-03-17 19:43:29,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959300760] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:43:29,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113723252] [2025-03-17 19:43:29,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:29,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:29,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:43:29,466 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:43:29,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 19:43:29,509 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:43:29,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:43:29,523 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:29,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:29,524 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-17 19:43:29,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:43:29,553 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 [2025-03-17 19:43:29,598 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 [2025-03-17 19:43:29,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:29,609 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:43:29,660 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 16 treesize of output 14 [2025-03-17 19:43:29,667 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 22 treesize of output 20 [2025-03-17 19:43:29,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:29,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113723252] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:43:29,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:43:29,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2025-03-17 19:43:29,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401180051] [2025-03-17 19:43:29,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:43:29,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 19:43:29,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:29,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 19:43:29,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-17 19:43:29,853 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 180 [2025-03-17 19:43:29,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 271 transitions, 1606 flow. Second operand has 10 states, 10 states have (on average 108.5) internal successors, (1085), 10 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:29,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:29,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 180 [2025-03-17 19:43:29,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand