./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-chromosome-symm.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/chl-chromosome-symm.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 23ca06a4d1d66eab783b29fc3ce31114eee62eb7d17a2452b84e2d73b8d92cfa --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:40:16,574 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:40:16,657 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:40:16,661 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:40:16,661 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:40:16,677 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:40:16,677 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:40:16,678 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:40:16,678 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:40:16,679 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:40:16,679 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:40:16,679 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:40:16,679 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:40:16,679 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:40:16,679 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:40:16,679 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:40:16,679 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:40:16,680 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:40:16,680 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:40:16,680 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:40:16,680 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:40:16,680 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:40:16,680 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:40:16,680 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:40:16,680 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:40:16,680 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:40:16,680 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:40:16,680 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:40:16,680 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:40:16,680 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:40:16,680 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:40:16,680 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:40:16,680 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:40:16,680 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:40:16,680 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:40:16,680 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:40:16,680 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:40:16,680 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:40:16,681 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:40:16,681 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:40:16,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:40:16,681 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:40:16,681 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:40:16,681 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:40:16,681 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:40:16,681 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 -> 23ca06a4d1d66eab783b29fc3ce31114eee62eb7d17a2452b84e2d73b8d92cfa [2025-03-17 19:40:16,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:40:16,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:40:16,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:40:16,928 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:40:16,928 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:40:16,929 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2025-03-17 19:40:18,140 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc0cd1327/8878c05527fb4d298265ca626e824dac/FLAGbec84dac3 [2025-03-17 19:40:18,392 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:40:18,393 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2025-03-17 19:40:18,401 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc0cd1327/8878c05527fb4d298265ca626e824dac/FLAGbec84dac3 [2025-03-17 19:40:18,416 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc0cd1327/8878c05527fb4d298265ca626e824dac [2025-03-17 19:40:18,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:40:18,420 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:40:18,421 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:40:18,422 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:40:18,425 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:40:18,427 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:40:18" (1/1) ... [2025-03-17 19:40:18,428 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c369d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:18, skipping insertion in model container [2025-03-17 19:40:18,428 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:40:18" (1/1) ... [2025-03-17 19:40:18,442 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:40:18,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:40:18,594 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:40:18,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:40:18,634 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:40:18,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:18 WrapperNode [2025-03-17 19:40:18,636 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:40:18,636 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:40:18,637 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:40:18,637 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:40:18,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:18" (1/1) ... [2025-03-17 19:40:18,646 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:18" (1/1) ... [2025-03-17 19:40:18,667 INFO L138 Inliner]: procedures = 24, calls = 28, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 217 [2025-03-17 19:40:18,668 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:40:18,668 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:40:18,668 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:40:18,668 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:40:18,674 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:18" (1/1) ... [2025-03-17 19:40:18,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:18" (1/1) ... [2025-03-17 19:40:18,677 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:18" (1/1) ... [2025-03-17 19:40:18,690 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-03-17 19:40:18,691 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:18" (1/1) ... [2025-03-17 19:40:18,691 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:18" (1/1) ... [2025-03-17 19:40:18,696 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:18" (1/1) ... [2025-03-17 19:40:18,697 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:18" (1/1) ... [2025-03-17 19:40:18,698 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:18" (1/1) ... [2025-03-17 19:40:18,699 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:18" (1/1) ... [2025-03-17 19:40:18,700 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:40:18,701 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:40:18,701 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:40:18,701 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:40:18,702 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:18" (1/1) ... [2025-03-17 19:40:18,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:40:18,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:40:18,730 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 19:40:18,732 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 19:40:18,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:40:18,751 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 19:40:18,751 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 19:40:18,752 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 19:40:18,752 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 19:40:18,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:40:18,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 19:40:18,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 19:40:18,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 19:40:18,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 19:40:18,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:40:18,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:40:18,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 19:40:18,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 19:40:18,753 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 19:40:18,830 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:40:18,832 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:40:19,168 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:40:19,168 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:40:19,396 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:40:19,396 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:40:19,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:40:19 BoogieIcfgContainer [2025-03-17 19:40:19,397 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:40:19,398 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:40:19,398 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:40:19,401 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:40:19,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:40:18" (1/3) ... [2025-03-17 19:40:19,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@128d7d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:40:19, skipping insertion in model container [2025-03-17 19:40:19,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:18" (2/3) ... [2025-03-17 19:40:19,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@128d7d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:40:19, skipping insertion in model container [2025-03-17 19:40:19,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:40:19" (3/3) ... [2025-03-17 19:40:19,403 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-chromosome-symm.wvr.c [2025-03-17 19:40:19,413 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:40:19,414 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-chromosome-symm.wvr.c that has 3 procedures, 65 locations, 1 initial locations, 4 loop locations, and 20 error locations. [2025-03-17 19:40:19,414 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:40:19,470 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-17 19:40:19,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 72 transitions, 158 flow [2025-03-17 19:40:19,524 INFO L124 PetriNetUnfolderBase]: 8/70 cut-off events. [2025-03-17 19:40:19,526 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 19:40:19,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 70 events. 8/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 224 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2025-03-17 19:40:19,529 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 72 transitions, 158 flow [2025-03-17 19:40:19,535 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 68 transitions, 145 flow [2025-03-17 19:40:19,539 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:40:19,554 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;@5a49a1d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:40:19,554 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2025-03-17 19:40:19,562 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:40:19,563 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-17 19:40:19,563 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:40:19,563 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:40:19,564 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 19:40:19,564 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-03-17 19:40:19,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:40:19,569 INFO L85 PathProgramCache]: Analyzing trace with hash 637194, now seen corresponding path program 1 times [2025-03-17 19:40:19,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:40:19,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734305281] [2025-03-17 19:40:19,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:40:19,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:40:19,635 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:40:19,658 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:40:19,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:40:19,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:19,771 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 19:40:19,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:40:19,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734305281] [2025-03-17 19:40:19,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734305281] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:40:19,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:40:19,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:40:19,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970504112] [2025-03-17 19:40:19,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:40:19,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:40:19,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:40:19,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:40:19,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:40:19,819 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2025-03-17 19:40:19,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:40:19,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:40:19,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2025-03-17 19:40:19,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:40:20,070 INFO L124 PetriNetUnfolderBase]: 281/781 cut-off events. [2025-03-17 19:40:20,071 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2025-03-17 19:40:20,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1249 conditions, 781 events. 281/781 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5045 event pairs, 172 based on Foata normal form. 2/593 useless extension candidates. Maximal degree in co-relation 1160. Up to 437 conditions per place. [2025-03-17 19:40:20,079 INFO L140 encePairwiseOnDemand]: 61/72 looper letters, 33 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2025-03-17 19:40:20,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 74 transitions, 237 flow [2025-03-17 19:40:20,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:40:20,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:40:20,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 188 transitions. [2025-03-17 19:40:20,090 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2025-03-17 19:40:20,091 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 145 flow. Second operand 4 states and 188 transitions. [2025-03-17 19:40:20,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 74 transitions, 237 flow [2025-03-17 19:40:20,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 74 transitions, 232 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:40:20,097 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 200 flow [2025-03-17 19:40:20,098 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=70, PETRI_TRANSITIONS=74} [2025-03-17 19:40:20,100 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 3 predicate places. [2025-03-17 19:40:20,100 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 200 flow [2025-03-17 19:40:20,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:40:20,101 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:40:20,101 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-17 19:40:20,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:40:20,101 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-03-17 19:40:20,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:40:20,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1803344311, now seen corresponding path program 1 times [2025-03-17 19:40:20,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:40:20,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809312037] [2025-03-17 19:40:20,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:40:20,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:40:20,111 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:40:20,130 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:40:20,130 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:40:20,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:20,230 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 19:40:20,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:40:20,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809312037] [2025-03-17 19:40:20,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809312037] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:40:20,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055696013] [2025-03-17 19:40:20,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:40:20,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:40:20,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:40:20,232 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 19:40:20,234 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 19:40:20,279 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:40:20,294 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:40:20,294 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:40:20,294 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:20,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:40:20,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:40:20,340 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 19:40:20,341 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:40:20,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055696013] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:40:20,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:40:20,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-17 19:40:20,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977653741] [2025-03-17 19:40:20,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:40:20,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:40:20,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:40:20,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:40:20,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:40:20,360 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2025-03-17 19:40:20,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 74 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 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 19:40:20,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:40:20,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2025-03-17 19:40:20,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:40:20,534 INFO L124 PetriNetUnfolderBase]: 281/779 cut-off events. [2025-03-17 19:40:20,534 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2025-03-17 19:40:20,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1260 conditions, 779 events. 281/779 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5027 event pairs, 172 based on Foata normal form. 2/594 useless extension candidates. Maximal degree in co-relation 1210. Up to 427 conditions per place. [2025-03-17 19:40:20,540 INFO L140 encePairwiseOnDemand]: 63/72 looper letters, 26 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2025-03-17 19:40:20,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 72 transitions, 268 flow [2025-03-17 19:40:20,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:40:20,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:40:20,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 256 transitions. [2025-03-17 19:40:20,545 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2025-03-17 19:40:20,545 INFO L175 Difference]: Start difference. First operand has 70 places, 74 transitions, 200 flow. Second operand 6 states and 256 transitions. [2025-03-17 19:40:20,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 72 transitions, 268 flow [2025-03-17 19:40:20,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 72 transitions, 268 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:40:20,547 INFO L231 Difference]: Finished difference. Result has 73 places, 72 transitions, 216 flow [2025-03-17 19:40:20,547 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2025-03-17 19:40:20,548 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 6 predicate places. [2025-03-17 19:40:20,548 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 216 flow [2025-03-17 19:40:20,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 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 19:40:20,548 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:40:20,548 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-17 19:40:20,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 19:40:20,753 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 19:40:20,753 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-03-17 19:40:20,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:40:20,754 INFO L85 PathProgramCache]: Analyzing trace with hash 69099363, now seen corresponding path program 1 times [2025-03-17 19:40:20,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:40:20,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718267381] [2025-03-17 19:40:20,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:40:20,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:40:20,761 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:40:20,779 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:40:20,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:40:20,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:20,868 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 19:40:20,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:40:20,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718267381] [2025-03-17 19:40:20,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718267381] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:40:20,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692320738] [2025-03-17 19:40:20,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:40:20,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:40:20,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:40:20,871 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 19:40:20,872 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 19:40:20,910 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:40:20,921 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:40:20,921 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:40:20,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:20,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:40:20,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:40:20,946 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 19:40:20,947 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:40:20,979 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 19:40:20,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692320738] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:40:20,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:40:20,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-17 19:40:20,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308319702] [2025-03-17 19:40:20,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:40:20,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 19:40:20,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:40:20,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 19:40:20,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:40:21,001 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2025-03-17 19:40:21,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 216 flow. Second operand has 12 states, 12 states have (on average 37.083333333333336) internal successors, (445), 12 states have internal predecessors, (445), 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 19:40:21,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:40:21,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2025-03-17 19:40:21,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:40:21,201 INFO L124 PetriNetUnfolderBase]: 287/803 cut-off events. [2025-03-17 19:40:21,201 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2025-03-17 19:40:21,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1354 conditions, 803 events. 287/803 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5276 event pairs, 172 based on Foata normal form. 6/621 useless extension candidates. Maximal degree in co-relation 1212. Up to 438 conditions per place. [2025-03-17 19:40:21,204 INFO L140 encePairwiseOnDemand]: 63/72 looper letters, 31 selfloop transitions, 25 changer transitions 0/90 dead transitions. [2025-03-17 19:40:21,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 90 transitions, 442 flow [2025-03-17 19:40:21,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:40:21,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:40:21,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 422 transitions. [2025-03-17 19:40:21,206 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5861111111111111 [2025-03-17 19:40:21,206 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 216 flow. Second operand 10 states and 422 transitions. [2025-03-17 19:40:21,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 90 transitions, 442 flow [2025-03-17 19:40:21,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 90 transitions, 384 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-03-17 19:40:21,209 INFO L231 Difference]: Finished difference. Result has 80 places, 90 transitions, 356 flow [2025-03-17 19:40:21,209 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=356, PETRI_PLACES=80, PETRI_TRANSITIONS=90} [2025-03-17 19:40:21,209 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2025-03-17 19:40:21,209 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 90 transitions, 356 flow [2025-03-17 19:40:21,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 37.083333333333336) internal successors, (445), 12 states have internal predecessors, (445), 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 19:40:21,210 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:40:21,210 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:40:21,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 19:40:21,414 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 19:40:21,414 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-03-17 19:40:21,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:40:21,415 INFO L85 PathProgramCache]: Analyzing trace with hash -184866873, now seen corresponding path program 1 times [2025-03-17 19:40:21,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:40:21,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219271349] [2025-03-17 19:40:21,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:40:21,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:40:21,438 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:40:21,445 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:40:21,445 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:40:21,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:21,649 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 19:40:21,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:40:21,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219271349] [2025-03-17 19:40:21,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219271349] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:40:21,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:40:21,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:40:21,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491205474] [2025-03-17 19:40:21,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:40:21,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:40:21,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:40:21,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:40:21,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:40:21,652 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 72 [2025-03-17 19:40:21,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 90 transitions, 356 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 19:40:21,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:40:21,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 72 [2025-03-17 19:40:21,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:40:21,875 INFO L124 PetriNetUnfolderBase]: 285/801 cut-off events. [2025-03-17 19:40:21,876 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2025-03-17 19:40:21,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1359 conditions, 801 events. 285/801 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5148 event pairs, 172 based on Foata normal form. 2/617 useless extension candidates. Maximal degree in co-relation 1292. Up to 447 conditions per place. [2025-03-17 19:40:21,880 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 45 selfloop transitions, 7 changer transitions 0/88 dead transitions. [2025-03-17 19:40:21,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 88 transitions, 450 flow [2025-03-17 19:40:21,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:40:21,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:40:21,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2025-03-17 19:40:21,882 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2025-03-17 19:40:21,882 INFO L175 Difference]: Start difference. First operand has 80 places, 90 transitions, 356 flow. Second operand 3 states and 156 transitions. [2025-03-17 19:40:21,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 88 transitions, 450 flow [2025-03-17 19:40:21,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 88 transitions, 420 flow, removed 6 selfloop flow, removed 3 redundant places. [2025-03-17 19:40:21,884 INFO L231 Difference]: Finished difference. Result has 79 places, 88 transitions, 330 flow [2025-03-17 19:40:21,885 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=330, PETRI_PLACES=79, PETRI_TRANSITIONS=88} [2025-03-17 19:40:21,885 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 12 predicate places. [2025-03-17 19:40:21,885 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 88 transitions, 330 flow [2025-03-17 19:40:21,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 19:40:21,885 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:40:21,887 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:40:21,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:40:21,889 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-03-17 19:40:21,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:40:21,890 INFO L85 PathProgramCache]: Analyzing trace with hash 2000056447, now seen corresponding path program 1 times [2025-03-17 19:40:21,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:40:21,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158846091] [2025-03-17 19:40:21,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:40:21,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:40:21,897 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 19:40:21,909 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 19:40:21,910 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:40:21,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:21,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 19:40:21,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:40:21,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158846091] [2025-03-17 19:40:21,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158846091] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:40:21,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:40:21,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:40:21,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908424254] [2025-03-17 19:40:21,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:40:21,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:40:21,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:40:21,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:40:21,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:40:22,026 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 72 [2025-03-17 19:40:22,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 88 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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 19:40:22,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:40:22,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 72 [2025-03-17 19:40:22,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:40:22,251 INFO L124 PetriNetUnfolderBase]: 546/1268 cut-off events. [2025-03-17 19:40:22,258 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2025-03-17 19:40:22,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2240 conditions, 1268 events. 546/1268 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8378 event pairs, 175 based on Foata normal form. 40/1043 useless extension candidates. Maximal degree in co-relation 2175. Up to 426 conditions per place. [2025-03-17 19:40:22,268 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 80 selfloop transitions, 5 changer transitions 0/115 dead transitions. [2025-03-17 19:40:22,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 115 transitions, 558 flow [2025-03-17 19:40:22,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:40:22,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:40:22,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 202 transitions. [2025-03-17 19:40:22,291 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7013888888888888 [2025-03-17 19:40:22,291 INFO L175 Difference]: Start difference. First operand has 79 places, 88 transitions, 330 flow. Second operand 4 states and 202 transitions. [2025-03-17 19:40:22,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 115 transitions, 558 flow [2025-03-17 19:40:22,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 115 transitions, 544 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:40:22,293 INFO L231 Difference]: Finished difference. Result has 82 places, 90 transitions, 350 flow [2025-03-17 19:40:22,294 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=350, PETRI_PLACES=82, PETRI_TRANSITIONS=90} [2025-03-17 19:40:22,294 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 15 predicate places. [2025-03-17 19:40:22,294 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 90 transitions, 350 flow [2025-03-17 19:40:22,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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 19:40:22,294 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:40:22,294 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:40:22,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:40:22,294 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-03-17 19:40:22,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:40:22,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1872208324, now seen corresponding path program 1 times [2025-03-17 19:40:22,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:40:22,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675187974] [2025-03-17 19:40:22,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:40:22,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:40:22,302 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 19:40:22,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 19:40:22,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:40:22,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:22,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:40:22,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:40:22,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675187974] [2025-03-17 19:40:22,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675187974] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:40:22,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669368689] [2025-03-17 19:40:22,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:40:22,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:40:22,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:40:22,466 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 19:40:22,468 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 19:40:22,514 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 19:40:22,532 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 19:40:22,532 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:40:22,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:22,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 19:40:22,534 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:40:22,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:40:22,619 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:40:22,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:40:22,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669368689] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:40:22,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:40:22,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-17 19:40:22,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43385465] [2025-03-17 19:40:22,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:40:22,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 19:40:22,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:40:22,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 19:40:22,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2025-03-17 19:40:22,678 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2025-03-17 19:40:22,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 90 transitions, 350 flow. Second operand has 11 states, 11 states have (on average 37.63636363636363) internal successors, (414), 11 states have internal predecessors, (414), 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 19:40:22,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:40:22,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2025-03-17 19:40:22,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:40:22,925 INFO L124 PetriNetUnfolderBase]: 354/1019 cut-off events. [2025-03-17 19:40:22,925 INFO L125 PetriNetUnfolderBase]: For 257/276 co-relation queries the response was YES. [2025-03-17 19:40:22,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1858 conditions, 1019 events. 354/1019 cut-off events. For 257/276 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7000 event pairs, 226 based on Foata normal form. 15/827 useless extension candidates. Maximal degree in co-relation 1790. Up to 546 conditions per place. [2025-03-17 19:40:22,932 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 31 selfloop transitions, 21 changer transitions 0/86 dead transitions. [2025-03-17 19:40:22,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 86 transitions, 434 flow [2025-03-17 19:40:22,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:40:22,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:40:22,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 298 transitions. [2025-03-17 19:40:22,934 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5912698412698413 [2025-03-17 19:40:22,934 INFO L175 Difference]: Start difference. First operand has 82 places, 90 transitions, 350 flow. Second operand 7 states and 298 transitions. [2025-03-17 19:40:22,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 86 transitions, 434 flow [2025-03-17 19:40:22,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 86 transitions, 434 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:40:22,939 INFO L231 Difference]: Finished difference. Result has 88 places, 86 transitions, 372 flow [2025-03-17 19:40:22,939 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=372, PETRI_PLACES=88, PETRI_TRANSITIONS=86} [2025-03-17 19:40:22,941 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 21 predicate places. [2025-03-17 19:40:22,941 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 86 transitions, 372 flow [2025-03-17 19:40:22,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 37.63636363636363) internal successors, (414), 11 states have internal predecessors, (414), 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 19:40:22,942 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:40:22,942 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-03-17 19:40:22,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 19:40:23,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:40:23,142 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-03-17 19:40:23,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:40:23,143 INFO L85 PathProgramCache]: Analyzing trace with hash 756252848, now seen corresponding path program 2 times [2025-03-17 19:40:23,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:40:23,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299075587] [2025-03-17 19:40:23,143 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:40:23,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:40:23,152 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-17 19:40:23,155 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-17 19:40:23,155 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:40:23,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:23,187 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 19:40:23,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:40:23,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299075587] [2025-03-17 19:40:23,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299075587] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:40:23,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034052953] [2025-03-17 19:40:23,187 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:40:23,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:40:23,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:40:23,190 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:40:23,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 19:40:23,235 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-17 19:40:23,243 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-17 19:40:23,243 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:40:23,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:23,244 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:40:23,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:40:23,283 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 19:40:23,283 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:40:23,312 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 19:40:23,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034052953] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:40:23,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:40:23,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2025-03-17 19:40:23,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660164309] [2025-03-17 19:40:23,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:40:23,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 19:40:23,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:40:23,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 19:40:23,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-17 19:40:23,327 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2025-03-17 19:40:23,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 86 transitions, 372 flow. Second operand has 7 states, 7 states have (on average 38.0) internal successors, (266), 7 states have internal predecessors, (266), 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 19:40:23,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:40:23,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2025-03-17 19:40:23,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:40:23,497 INFO L124 PetriNetUnfolderBase]: 354/1017 cut-off events. [2025-03-17 19:40:23,497 INFO L125 PetriNetUnfolderBase]: For 287/306 co-relation queries the response was YES. [2025-03-17 19:40:23,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1868 conditions, 1017 events. 354/1017 cut-off events. For 287/306 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 6970 event pairs, 226 based on Foata normal form. 13/824 useless extension candidates. Maximal degree in co-relation 1802. Up to 540 conditions per place. [2025-03-17 19:40:23,504 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 27 selfloop transitions, 23 changer transitions 0/84 dead transitions. [2025-03-17 19:40:23,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 84 transitions, 452 flow [2025-03-17 19:40:23,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:40:23,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:40:23,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 176 transitions. [2025-03-17 19:40:23,505 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2025-03-17 19:40:23,505 INFO L175 Difference]: Start difference. First operand has 88 places, 86 transitions, 372 flow. Second operand 4 states and 176 transitions. [2025-03-17 19:40:23,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 84 transitions, 452 flow [2025-03-17 19:40:23,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 84 transitions, 415 flow, removed 2 selfloop flow, removed 8 redundant places. [2025-03-17 19:40:23,509 INFO L231 Difference]: Finished difference. Result has 81 places, 84 transitions, 361 flow [2025-03-17 19:40:23,509 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=361, PETRI_PLACES=81, PETRI_TRANSITIONS=84} [2025-03-17 19:40:23,510 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 14 predicate places. [2025-03-17 19:40:23,510 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 84 transitions, 361 flow [2025-03-17 19:40:23,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 38.0) internal successors, (266), 7 states have internal predecessors, (266), 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 19:40:23,510 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:40:23,510 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:40:23,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 19:40:23,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:40:23,711 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-03-17 19:40:23,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:40:23,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1209670788, now seen corresponding path program 2 times [2025-03-17 19:40:23,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:40:23,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340484636] [2025-03-17 19:40:23,711 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:40:23,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:40:23,745 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-03-17 19:40:23,767 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-03-17 19:40:23,767 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:40:23,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:23,937 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-17 19:40:23,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:40:23,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340484636] [2025-03-17 19:40:23,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340484636] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:40:23,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143244990] [2025-03-17 19:40:23,938 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:40:23,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:40:23,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:40:23,941 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:40:23,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 19:40:23,989 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-03-17 19:40:24,010 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-03-17 19:40:24,010 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:40:24,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:24,011 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-17 19:40:24,013 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:40:24,113 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-17 19:40:24,113 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:40:24,221 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-17 19:40:24,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143244990] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:40:24,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:40:24,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2025-03-17 19:40:24,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628302601] [2025-03-17 19:40:24,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:40:24,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 19:40:24,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:40:24,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 19:40:24,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2025-03-17 19:40:24,301 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2025-03-17 19:40:24,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 84 transitions, 361 flow. Second operand has 23 states, 23 states have (on average 37.30434782608695) internal successors, (858), 23 states have internal predecessors, (858), 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 19:40:24,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:40:24,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2025-03-17 19:40:24,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:40:24,520 INFO L124 PetriNetUnfolderBase]: 352/1017 cut-off events. [2025-03-17 19:40:24,521 INFO L125 PetriNetUnfolderBase]: For 283/302 co-relation queries the response was YES. [2025-03-17 19:40:24,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1874 conditions, 1017 events. 352/1017 cut-off events. For 283/302 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 6952 event pairs, 226 based on Foata normal form. 15/827 useless extension candidates. Maximal degree in co-relation 1727. Up to 541 conditions per place. [2025-03-17 19:40:24,528 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 28 selfloop transitions, 22 changer transitions 0/84 dead transitions. [2025-03-17 19:40:24,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 84 transitions, 468 flow [2025-03-17 19:40:24,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 19:40:24,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 19:40:24,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 448 transitions. [2025-03-17 19:40:24,530 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5656565656565656 [2025-03-17 19:40:24,530 INFO L175 Difference]: Start difference. First operand has 81 places, 84 transitions, 361 flow. Second operand 11 states and 448 transitions. [2025-03-17 19:40:24,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 84 transitions, 468 flow [2025-03-17 19:40:24,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 84 transitions, 420 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:40:24,533 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 382 flow [2025-03-17 19:40:24,534 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=382, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2025-03-17 19:40:24,534 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 23 predicate places. [2025-03-17 19:40:24,535 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 382 flow [2025-03-17 19:40:24,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 37.30434782608695) internal successors, (858), 23 states have internal predecessors, (858), 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 19:40:24,536 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:40:24,536 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:40:24,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 19:40:24,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:40:24,737 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-03-17 19:40:24,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:40:24,737 INFO L85 PathProgramCache]: Analyzing trace with hash -2058799292, now seen corresponding path program 3 times [2025-03-17 19:40:24,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:40:24,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141184255] [2025-03-17 19:40:24,738 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 19:40:24,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:40:24,747 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 6 equivalence classes. [2025-03-17 19:40:24,800 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 39 of 39 statements. [2025-03-17 19:40:24,800 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-17 19:40:24,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:26,164 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 12 proven. 40 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-17 19:40:26,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:40:26,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141184255] [2025-03-17 19:40:26,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141184255] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:40:26,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130874159] [2025-03-17 19:40:26,165 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 19:40:26,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:40:26,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:40:26,167 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:40:26,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 19:40:26,218 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 6 equivalence classes. [2025-03-17 19:40:26,258 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 39 of 39 statements. [2025-03-17 19:40:26,258 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-17 19:40:26,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:26,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-03-17 19:40:26,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:40:26,316 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 19:40:26,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 19:40:26,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-03-17 19:40:26,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 19:40:26,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-03-17 19:40:26,468 INFO L349 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2025-03-17 19:40:26,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2025-03-17 19:40:26,565 INFO L349 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2025-03-17 19:40:26,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2025-03-17 19:40:26,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-17 19:40:26,682 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 3 proven. 32 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-17 19:40:26,683 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:42:02,604 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 42 treesize of output 40 [2025-03-17 19:42:02,617 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 6678 treesize of output 6646 [2025-03-17 19:42:02,865 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 33 refuted. 2 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-17 19:42:02,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130874159] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:42:02,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:42:02,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 14] total 42 [2025-03-17 19:42:02,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393342499] [2025-03-17 19:42:02,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:42:02,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-03-17 19:42:02,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:02,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-03-17 19:42:02,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1499, Unknown=23, NotChecked=0, Total=1806