./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.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/popl20-bad-three-array-sum-alt.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 20832c4ec3f8ccecbcf7cfcec0aecbbc925bfb9e6d8397db46b5825bb40681b3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:44:09,859 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:44:09,908 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:44:09,911 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:44:09,912 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:44:09,927 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:44:09,927 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:44:09,927 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:44:09,928 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:44:09,928 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:44:09,928 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:44:09,928 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:44:09,928 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:44:09,928 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:44:09,928 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:44:09,929 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:44:09,929 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:44:09,929 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:44:09,929 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:44:09,929 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:44:09,929 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:44:09,929 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:44:09,929 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:44:09,929 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:44:09,929 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:44:09,929 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:44:09,929 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:44:09,930 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:44:09,930 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:44:09,930 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:44:09,930 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:44:09,930 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:44:09,930 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:44:09,930 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:44:09,930 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:44:09,930 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:44:09,930 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:44:09,930 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:44:09,930 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:44:09,930 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:44:09,930 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:44:09,930 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:44:09,930 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:44:09,930 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:44:09,930 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:44:09,930 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 -> 20832c4ec3f8ccecbcf7cfcec0aecbbc925bfb9e6d8397db46b5825bb40681b3 [2025-03-17 19:44:10,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:44:10,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:44:10,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:44:10,202 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:44:10,202 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:44:10,204 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2025-03-17 19:44:11,394 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/789d6dd0a/fa761944156a4992a05fa7c8c543a726/FLAGf47ae8466 [2025-03-17 19:44:11,618 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:44:11,620 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2025-03-17 19:44:11,627 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/789d6dd0a/fa761944156a4992a05fa7c8c543a726/FLAGf47ae8466 [2025-03-17 19:44:11,642 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/789d6dd0a/fa761944156a4992a05fa7c8c543a726 [2025-03-17 19:44:11,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:44:11,646 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:44:11,647 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:44:11,647 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:44:11,650 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:44:11,651 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:44:11" (1/1) ... [2025-03-17 19:44:11,652 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1333d035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:11, skipping insertion in model container [2025-03-17 19:44:11,652 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:44:11" (1/1) ... [2025-03-17 19:44:11,668 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:44:11,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:44:11,818 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:44:11,839 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:44:11,853 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:44:11,854 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:11 WrapperNode [2025-03-17 19:44:11,854 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:44:11,855 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:44:11,855 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:44:11,855 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:44:11,862 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:11" (1/1) ... [2025-03-17 19:44:11,872 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:11" (1/1) ... [2025-03-17 19:44:11,897 INFO L138 Inliner]: procedures = 25, calls = 31, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 331 [2025-03-17 19:44:11,898 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:44:11,902 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:44:11,902 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:44:11,902 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:44:11,907 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:11" (1/1) ... [2025-03-17 19:44:11,908 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:11" (1/1) ... [2025-03-17 19:44:11,910 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:11" (1/1) ... [2025-03-17 19:44:11,926 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2025-03-17 19:44:11,930 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:11" (1/1) ... [2025-03-17 19:44:11,931 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:11" (1/1) ... [2025-03-17 19:44:11,938 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:11" (1/1) ... [2025-03-17 19:44:11,939 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:11" (1/1) ... [2025-03-17 19:44:11,940 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:11" (1/1) ... [2025-03-17 19:44:11,940 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:11" (1/1) ... [2025-03-17 19:44:11,942 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:44:11,943 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:44:11,943 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:44:11,943 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:44:11,944 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:11" (1/1) ... [2025-03-17 19:44:11,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:44:11,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:11,968 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 19:44:11,970 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 19:44:11,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:44:11,988 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 19:44:11,988 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 19:44:11,988 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 19:44:11,988 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 19:44:11,988 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-17 19:44:11,988 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-17 19:44:11,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:44:11,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 19:44:11,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 19:44:11,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 19:44:11,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 19:44:11,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:44:11,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:44:11,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 19:44:11,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 19:44:11,990 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 19:44:12,076 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:44:12,078 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:44:12,528 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:44:12,528 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:44:12,752 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:44:12,753 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:44:12,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:44:12 BoogieIcfgContainer [2025-03-17 19:44:12,753 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:44:12,755 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:44:12,755 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:44:12,758 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:44:12,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:44:11" (1/3) ... [2025-03-17 19:44:12,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7b7d6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:44:12, skipping insertion in model container [2025-03-17 19:44:12,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:11" (2/3) ... [2025-03-17 19:44:12,761 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7b7d6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:44:12, skipping insertion in model container [2025-03-17 19:44:12,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:44:12" (3/3) ... [2025-03-17 19:44:12,762 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-three-array-sum-alt.wvr.c [2025-03-17 19:44:12,773 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:44:12,774 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-three-array-sum-alt.wvr.c that has 4 procedures, 128 locations, 1 initial locations, 6 loop locations, and 42 error locations. [2025-03-17 19:44:12,774 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:44:12,844 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-17 19:44:12,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 143 transitions, 307 flow [2025-03-17 19:44:12,920 INFO L124 PetriNetUnfolderBase]: 16/140 cut-off events. [2025-03-17 19:44:12,923 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-17 19:44:12,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 140 events. 16/140 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 517 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2025-03-17 19:44:12,931 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 143 transitions, 307 flow [2025-03-17 19:44:12,934 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 139 transitions, 296 flow [2025-03-17 19:44:12,945 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:44:12,957 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;@1ffd41fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:44:12,957 INFO L334 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2025-03-17 19:44:12,963 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:44:12,964 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-17 19:44:12,964 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:44:12,964 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:12,965 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 19:44:12,965 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2025-03-17 19:44:12,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:12,969 INFO L85 PathProgramCache]: Analyzing trace with hash 986668, now seen corresponding path program 1 times [2025-03-17 19:44:12,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:12,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108138071] [2025-03-17 19:44:12,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:12,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:13,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:44:13,049 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:44:13,049 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:13,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:13,183 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 19:44:13,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:13,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108138071] [2025-03-17 19:44:13,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108138071] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:13,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:44:13,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:44:13,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251166143] [2025-03-17 19:44:13,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:13,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:44:13,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:13,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:44:13,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:44:13,253 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 143 [2025-03-17 19:44:13,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 139 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 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 19:44:13,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:13,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 143 [2025-03-17 19:44:13,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:14,529 INFO L124 PetriNetUnfolderBase]: 6059/13019 cut-off events. [2025-03-17 19:44:14,529 INFO L125 PetriNetUnfolderBase]: For 307/307 co-relation queries the response was YES. [2025-03-17 19:44:14,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21253 conditions, 13019 events. 6059/13019 cut-off events. For 307/307 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 121574 event pairs, 3967 based on Foata normal form. 3/10333 useless extension candidates. Maximal degree in co-relation 20182. Up to 7975 conditions per place. [2025-03-17 19:44:14,637 INFO L140 encePairwiseOnDemand]: 127/143 looper letters, 61 selfloop transitions, 10 changer transitions 0/148 dead transitions. [2025-03-17 19:44:14,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 148 transitions, 456 flow [2025-03-17 19:44:14,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:44:14,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:44:14,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 397 transitions. [2025-03-17 19:44:14,651 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6940559440559441 [2025-03-17 19:44:14,653 INFO L175 Difference]: Start difference. First operand has 133 places, 139 transitions, 296 flow. Second operand 4 states and 397 transitions. [2025-03-17 19:44:14,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 148 transitions, 456 flow [2025-03-17 19:44:14,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 148 transitions, 444 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-17 19:44:14,671 INFO L231 Difference]: Finished difference. Result has 133 places, 148 transitions, 372 flow [2025-03-17 19:44:14,673 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=372, PETRI_PLACES=133, PETRI_TRANSITIONS=148} [2025-03-17 19:44:14,677 INFO L279 CegarLoopForPetriNet]: 133 programPoint places, 0 predicate places. [2025-03-17 19:44:14,679 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 148 transitions, 372 flow [2025-03-17 19:44:14,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 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 19:44:14,680 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:14,680 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-17 19:44:14,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:44:14,680 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2025-03-17 19:44:14,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:14,681 INFO L85 PathProgramCache]: Analyzing trace with hash -670125230, now seen corresponding path program 1 times [2025-03-17 19:44:14,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:14,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546374846] [2025-03-17 19:44:14,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:14,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:14,694 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:44:14,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:44:14,709 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:14,710 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:14,812 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 19:44:14,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:14,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546374846] [2025-03-17 19:44:14,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546374846] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:14,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560594489] [2025-03-17 19:44:14,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:14,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:14,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:14,816 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 19:44:14,818 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 19:44:14,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:44:14,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:44:14,876 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:14,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:14,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:44:14,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:14,915 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 19:44:14,915 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:44:14,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560594489] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:14,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:44:14,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-17 19:44:14,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980149112] [2025-03-17 19:44:14,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:14,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:44:14,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:14,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:44:14,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:44:14,936 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 143 [2025-03-17 19:44:14,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 148 transitions, 372 flow. Second operand has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 states have internal predecessors, (485), 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 19:44:14,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:14,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 143 [2025-03-17 19:44:14,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:15,968 INFO L124 PetriNetUnfolderBase]: 6059/13016 cut-off events. [2025-03-17 19:44:15,969 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2025-03-17 19:44:16,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21103 conditions, 13016 events. 6059/13016 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 121476 event pairs, 3967 based on Foata normal form. 3/10335 useless extension candidates. Maximal degree in co-relation 21030. Up to 7960 conditions per place. [2025-03-17 19:44:16,083 INFO L140 encePairwiseOnDemand]: 130/143 looper letters, 51 selfloop transitions, 17 changer transitions 0/145 dead transitions. [2025-03-17 19:44:16,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 145 transitions, 496 flow [2025-03-17 19:44:16,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:44:16,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:44:16,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 551 transitions. [2025-03-17 19:44:16,085 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6421911421911422 [2025-03-17 19:44:16,085 INFO L175 Difference]: Start difference. First operand has 133 places, 148 transitions, 372 flow. Second operand 6 states and 551 transitions. [2025-03-17 19:44:16,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 145 transitions, 496 flow [2025-03-17 19:44:16,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 145 transitions, 496 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:44:16,088 INFO L231 Difference]: Finished difference. Result has 135 places, 145 transitions, 394 flow [2025-03-17 19:44:16,089 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=394, PETRI_PLACES=135, PETRI_TRANSITIONS=145} [2025-03-17 19:44:16,089 INFO L279 CegarLoopForPetriNet]: 133 programPoint places, 2 predicate places. [2025-03-17 19:44:16,089 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 145 transitions, 394 flow [2025-03-17 19:44:16,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 states have internal predecessors, (485), 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 19:44:16,090 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:16,090 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-17 19:44:16,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 19:44:16,294 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 19:44:16,294 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2025-03-17 19:44:16,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:16,295 INFO L85 PathProgramCache]: Analyzing trace with hash 700955171, now seen corresponding path program 1 times [2025-03-17 19:44:16,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:16,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956714971] [2025-03-17 19:44:16,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:16,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:16,305 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:44:16,319 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:44:16,319 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:16,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:16,411 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 19:44:16,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:16,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956714971] [2025-03-17 19:44:16,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956714971] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:16,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832620922] [2025-03-17 19:44:16,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:16,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:16,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:16,414 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 19:44:16,415 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 19:44:16,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:44:16,479 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:44:16,479 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:16,479 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:16,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:44:16,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:16,506 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 19:44:16,506 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:16,544 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 19:44:16,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832620922] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:16,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:16,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-17 19:44:16,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099956455] [2025-03-17 19:44:16,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:16,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 19:44:16,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:16,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 19:44:16,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:44:16,590 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 143 [2025-03-17 19:44:16,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 145 transitions, 394 flow. Second operand has 12 states, 12 states have (on average 81.08333333333333) internal successors, (973), 12 states have internal predecessors, (973), 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 19:44:16,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:16,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 143 [2025-03-17 19:44:16,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:17,578 INFO L124 PetriNetUnfolderBase]: 6068/13052 cut-off events. [2025-03-17 19:44:17,578 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2025-03-17 19:44:17,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21244 conditions, 13052 events. 6068/13052 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 121789 event pairs, 3967 based on Foata normal form. 9/10377 useless extension candidates. Maximal degree in co-relation 21032. Up to 7975 conditions per place. [2025-03-17 19:44:17,640 INFO L140 encePairwiseOnDemand]: 130/143 looper letters, 58 selfloop transitions, 37 changer transitions 0/172 dead transitions. [2025-03-17 19:44:17,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 172 transitions, 758 flow [2025-03-17 19:44:17,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:44:17,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:44:17,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 904 transitions. [2025-03-17 19:44:17,645 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6321678321678321 [2025-03-17 19:44:17,645 INFO L175 Difference]: Start difference. First operand has 135 places, 145 transitions, 394 flow. Second operand 10 states and 904 transitions. [2025-03-17 19:44:17,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 172 transitions, 758 flow [2025-03-17 19:44:17,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 172 transitions, 675 flow, removed 16 selfloop flow, removed 5 redundant places. [2025-03-17 19:44:17,651 INFO L231 Difference]: Finished difference. Result has 142 places, 172 transitions, 609 flow [2025-03-17 19:44:17,652 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=609, PETRI_PLACES=142, PETRI_TRANSITIONS=172} [2025-03-17 19:44:17,652 INFO L279 CegarLoopForPetriNet]: 133 programPoint places, 9 predicate places. [2025-03-17 19:44:17,653 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 172 transitions, 609 flow [2025-03-17 19:44:17,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 81.08333333333333) internal successors, (973), 12 states have internal predecessors, (973), 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 19:44:17,653 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:17,653 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:17,661 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 19:44:17,853 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 19:44:17,854 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2025-03-17 19:44:17,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:17,854 INFO L85 PathProgramCache]: Analyzing trace with hash -511376148, now seen corresponding path program 1 times [2025-03-17 19:44:17,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:17,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558154753] [2025-03-17 19:44:17,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:17,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:17,865 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:44:17,877 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:44:17,878 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:17,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:17,948 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 19:44:17,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:17,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558154753] [2025-03-17 19:44:17,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558154753] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:17,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:44:17,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:44:17,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511052797] [2025-03-17 19:44:17,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:17,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:44:17,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:17,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:44:17,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:44:17,968 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 143 [2025-03-17 19:44:17,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 172 transitions, 609 flow. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 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 19:44:17,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:17,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 143 [2025-03-17 19:44:17,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:19,220 INFO L124 PetriNetUnfolderBase]: 12146/21916 cut-off events. [2025-03-17 19:44:19,221 INFO L125 PetriNetUnfolderBase]: For 191/191 co-relation queries the response was YES. [2025-03-17 19:44:19,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38260 conditions, 21916 events. 12146/21916 cut-off events. For 191/191 co-relation queries the response was YES. Maximal size of possible extension queue 889. Compared 189943 event pairs, 3909 based on Foata normal form. 544/18452 useless extension candidates. Maximal degree in co-relation 38162. Up to 7368 conditions per place. [2025-03-17 19:44:19,391 INFO L140 encePairwiseOnDemand]: 135/143 looper letters, 152 selfloop transitions, 5 changer transitions 0/231 dead transitions. [2025-03-17 19:44:19,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 231 transitions, 1045 flow [2025-03-17 19:44:19,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:44:19,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:44:19,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 444 transitions. [2025-03-17 19:44:19,396 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7762237762237763 [2025-03-17 19:44:19,396 INFO L175 Difference]: Start difference. First operand has 142 places, 172 transitions, 609 flow. Second operand 4 states and 444 transitions. [2025-03-17 19:44:19,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 231 transitions, 1045 flow [2025-03-17 19:44:19,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 231 transitions, 1008 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-03-17 19:44:19,403 INFO L231 Difference]: Finished difference. Result has 145 places, 174 transitions, 606 flow [2025-03-17 19:44:19,404 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=606, PETRI_PLACES=145, PETRI_TRANSITIONS=174} [2025-03-17 19:44:19,405 INFO L279 CegarLoopForPetriNet]: 133 programPoint places, 12 predicate places. [2025-03-17 19:44:19,405 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 174 transitions, 606 flow [2025-03-17 19:44:19,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 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 19:44:19,406 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:19,406 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:19,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:44:19,407 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2025-03-17 19:44:19,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:19,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1327209559, now seen corresponding path program 1 times [2025-03-17 19:44:19,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:19,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746191814] [2025-03-17 19:44:19,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:19,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:19,417 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:44:19,429 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:44:19,429 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:19,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:19,533 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 19:44:19,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:19,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746191814] [2025-03-17 19:44:19,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746191814] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:19,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:44:19,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:44:19,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680016031] [2025-03-17 19:44:19,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:19,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:44:19,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:19,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:44:19,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:44:19,535 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 143 [2025-03-17 19:44:19,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 174 transitions, 606 flow. Second operand has 5 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 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 19:44:19,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:19,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 143 [2025-03-17 19:44:19,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:20,914 INFO L124 PetriNetUnfolderBase]: 9386/20138 cut-off events. [2025-03-17 19:44:20,914 INFO L125 PetriNetUnfolderBase]: For 3060/3444 co-relation queries the response was YES. [2025-03-17 19:44:20,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34830 conditions, 20138 events. 9386/20138 cut-off events. For 3060/3444 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 194707 event pairs, 5752 based on Foata normal form. 465/16928 useless extension candidates. Maximal degree in co-relation 34677. Up to 9601 conditions per place. [2025-03-17 19:44:21,046 INFO L140 encePairwiseOnDemand]: 133/143 looper letters, 167 selfloop transitions, 24 changer transitions 0/271 dead transitions. [2025-03-17 19:44:21,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 271 transitions, 1319 flow [2025-03-17 19:44:21,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:44:21,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:44:21,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 661 transitions. [2025-03-17 19:44:21,049 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7703962703962703 [2025-03-17 19:44:21,049 INFO L175 Difference]: Start difference. First operand has 145 places, 174 transitions, 606 flow. Second operand 6 states and 661 transitions. [2025-03-17 19:44:21,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 271 transitions, 1319 flow [2025-03-17 19:44:21,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 271 transitions, 1319 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:44:21,063 INFO L231 Difference]: Finished difference. Result has 153 places, 184 transitions, 740 flow [2025-03-17 19:44:21,064 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=740, PETRI_PLACES=153, PETRI_TRANSITIONS=184} [2025-03-17 19:44:21,065 INFO L279 CegarLoopForPetriNet]: 133 programPoint places, 20 predicate places. [2025-03-17 19:44:21,065 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 184 transitions, 740 flow [2025-03-17 19:44:21,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 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 19:44:21,065 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:21,065 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:21,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:44:21,065 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2025-03-17 19:44:21,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:21,066 INFO L85 PathProgramCache]: Analyzing trace with hash 686724109, now seen corresponding path program 1 times [2025-03-17 19:44:21,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:21,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318313456] [2025-03-17 19:44:21,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:21,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:21,075 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:44:21,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:44:21,083 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:21,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:21,144 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 19:44:21,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:21,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318313456] [2025-03-17 19:44:21,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318313456] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:21,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:44:21,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:44:21,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120237048] [2025-03-17 19:44:21,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:21,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:44:21,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:21,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:44:21,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:44:21,158 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 143 [2025-03-17 19:44:21,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 184 transitions, 740 flow. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 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 19:44:21,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:21,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 143 [2025-03-17 19:44:21,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:23,442 INFO L124 PetriNetUnfolderBase]: 20150/36696 cut-off events. [2025-03-17 19:44:23,442 INFO L125 PetriNetUnfolderBase]: For 10360/10720 co-relation queries the response was YES. [2025-03-17 19:44:23,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72669 conditions, 36696 events. 20150/36696 cut-off events. For 10360/10720 co-relation queries the response was YES. Maximal size of possible extension queue 1306. Compared 334690 event pairs, 6792 based on Foata normal form. 1106/32518 useless extension candidates. Maximal degree in co-relation 72508. Up to 12843 conditions per place. [2025-03-17 19:44:23,716 INFO L140 encePairwiseOnDemand]: 135/143 looper letters, 170 selfloop transitions, 5 changer transitions 0/249 dead transitions. [2025-03-17 19:44:23,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 249 transitions, 1288 flow [2025-03-17 19:44:23,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:44:23,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:44:23,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 442 transitions. [2025-03-17 19:44:23,718 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2025-03-17 19:44:23,718 INFO L175 Difference]: Start difference. First operand has 153 places, 184 transitions, 740 flow. Second operand 4 states and 442 transitions. [2025-03-17 19:44:23,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 249 transitions, 1288 flow [2025-03-17 19:44:23,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 249 transitions, 1284 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-03-17 19:44:23,809 INFO L231 Difference]: Finished difference. Result has 158 places, 186 transitions, 770 flow [2025-03-17 19:44:23,810 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=770, PETRI_PLACES=158, PETRI_TRANSITIONS=186} [2025-03-17 19:44:23,810 INFO L279 CegarLoopForPetriNet]: 133 programPoint places, 25 predicate places. [2025-03-17 19:44:23,810 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 186 transitions, 770 flow [2025-03-17 19:44:23,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 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 19:44:23,811 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:23,811 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:23,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 19:44:23,811 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2025-03-17 19:44:23,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:23,811 INFO L85 PathProgramCache]: Analyzing trace with hash -186388113, now seen corresponding path program 1 times [2025-03-17 19:44:23,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:23,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893430834] [2025-03-17 19:44:23,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:23,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:23,819 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:44:23,826 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:44:23,826 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:23,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:23,905 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 19:44:23,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:23,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893430834] [2025-03-17 19:44:23,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893430834] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:23,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:44:23,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:44:23,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101991493] [2025-03-17 19:44:23,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:23,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:44:23,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:23,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:44:23,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:44:23,906 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 143 [2025-03-17 19:44:23,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 186 transitions, 770 flow. Second operand has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 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 19:44:23,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:23,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 143 [2025-03-17 19:44:23,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:25,436 INFO L124 PetriNetUnfolderBase]: 9912/21860 cut-off events. [2025-03-17 19:44:25,437 INFO L125 PetriNetUnfolderBase]: For 8600/9545 co-relation queries the response was YES. [2025-03-17 19:44:25,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41761 conditions, 21860 events. 9912/21860 cut-off events. For 8600/9545 co-relation queries the response was YES. Maximal size of possible extension queue 950. Compared 222290 event pairs, 6639 based on Foata normal form. 588/18840 useless extension candidates. Maximal degree in co-relation 41597. Up to 12335 conditions per place. [2025-03-17 19:44:25,638 INFO L140 encePairwiseOnDemand]: 133/143 looper letters, 154 selfloop transitions, 24 changer transitions 0/258 dead transitions. [2025-03-17 19:44:25,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 258 transitions, 1384 flow [2025-03-17 19:44:25,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:44:25,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:44:25,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 646 transitions. [2025-03-17 19:44:25,640 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.752913752913753 [2025-03-17 19:44:25,640 INFO L175 Difference]: Start difference. First operand has 158 places, 186 transitions, 770 flow. Second operand 6 states and 646 transitions. [2025-03-17 19:44:25,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 258 transitions, 1384 flow [2025-03-17 19:44:25,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 258 transitions, 1384 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:44:25,666 INFO L231 Difference]: Finished difference. Result has 165 places, 188 transitions, 840 flow [2025-03-17 19:44:25,666 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=840, PETRI_PLACES=165, PETRI_TRANSITIONS=188} [2025-03-17 19:44:25,666 INFO L279 CegarLoopForPetriNet]: 133 programPoint places, 32 predicate places. [2025-03-17 19:44:25,668 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 188 transitions, 840 flow [2025-03-17 19:44:25,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 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 19:44:25,669 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:25,669 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:25,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 19:44:25,669 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2025-03-17 19:44:25,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:25,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1873329654, now seen corresponding path program 1 times [2025-03-17 19:44:25,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:25,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95277222] [2025-03-17 19:44:25,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:25,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:25,686 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:44:25,693 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:44:25,694 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:25,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:25,773 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 19:44:25,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:25,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95277222] [2025-03-17 19:44:25,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95277222] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:25,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:44:25,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:44:25,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750474570] [2025-03-17 19:44:25,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:25,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:44:25,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:25,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:44:25,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:44:25,808 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 143 [2025-03-17 19:44:25,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 188 transitions, 840 flow. Second operand has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 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 19:44:25,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:25,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 143 [2025-03-17 19:44:25,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:28,662 INFO L124 PetriNetUnfolderBase]: 22898/41978 cut-off events. [2025-03-17 19:44:28,662 INFO L125 PetriNetUnfolderBase]: For 23547/25320 co-relation queries the response was YES. [2025-03-17 19:44:28,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91427 conditions, 41978 events. 22898/41978 cut-off events. For 23547/25320 co-relation queries the response was YES. Maximal size of possible extension queue 1751. Compared 398701 event pairs, 7161 based on Foata normal form. 2063/38697 useless extension candidates. Maximal degree in co-relation 91256. Up to 13115 conditions per place. [2025-03-17 19:44:28,954 INFO L140 encePairwiseOnDemand]: 128/143 looper letters, 174 selfloop transitions, 10 changer transitions 0/252 dead transitions. [2025-03-17 19:44:28,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 252 transitions, 1468 flow [2025-03-17 19:44:28,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:44:28,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:44:28,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 418 transitions. [2025-03-17 19:44:28,956 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2025-03-17 19:44:28,956 INFO L175 Difference]: Start difference. First operand has 165 places, 188 transitions, 840 flow. Second operand 4 states and 418 transitions. [2025-03-17 19:44:28,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 252 transitions, 1468 flow [2025-03-17 19:44:29,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 252 transitions, 1432 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:44:29,098 INFO L231 Difference]: Finished difference. Result has 166 places, 192 transitions, 870 flow [2025-03-17 19:44:29,098 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=870, PETRI_PLACES=166, PETRI_TRANSITIONS=192} [2025-03-17 19:44:29,099 INFO L279 CegarLoopForPetriNet]: 133 programPoint places, 33 predicate places. [2025-03-17 19:44:29,099 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 192 transitions, 870 flow [2025-03-17 19:44:29,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 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 19:44:29,099 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:29,099 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:29,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 19:44:29,099 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2025-03-17 19:44:29,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:29,100 INFO L85 PathProgramCache]: Analyzing trace with hash -2056321857, now seen corresponding path program 1 times [2025-03-17 19:44:29,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:29,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828910629] [2025-03-17 19:44:29,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:29,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:29,105 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 19:44:29,109 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 19:44:29,109 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:29,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:29,166 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 19:44:29,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:29,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828910629] [2025-03-17 19:44:29,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828910629] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:29,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:44:29,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:44:29,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875023284] [2025-03-17 19:44:29,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:29,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:44:29,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:29,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:44:29,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:44:29,168 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 143 [2025-03-17 19:44:29,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 192 transitions, 870 flow. Second operand has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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 19:44:29,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:29,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 143 [2025-03-17 19:44:29,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:31,663 INFO L124 PetriNetUnfolderBase]: 13897/29780 cut-off events. [2025-03-17 19:44:31,663 INFO L125 PetriNetUnfolderBase]: For 19590/21182 co-relation queries the response was YES. [2025-03-17 19:44:31,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65058 conditions, 29780 events. 13897/29780 cut-off events. For 19590/21182 co-relation queries the response was YES. Maximal size of possible extension queue 1297. Compared 314601 event pairs, 9776 based on Foata normal form. 847/27378 useless extension candidates. Maximal degree in co-relation 64888. Up to 17787 conditions per place. [2025-03-17 19:44:31,844 INFO L140 encePairwiseOnDemand]: 133/143 looper letters, 133 selfloop transitions, 24 changer transitions 0/237 dead transitions. [2025-03-17 19:44:31,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 237 transitions, 1396 flow [2025-03-17 19:44:31,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:44:31,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:44:31,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 621 transitions. [2025-03-17 19:44:31,846 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7237762237762237 [2025-03-17 19:44:31,846 INFO L175 Difference]: Start difference. First operand has 166 places, 192 transitions, 870 flow. Second operand 6 states and 621 transitions. [2025-03-17 19:44:31,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 237 transitions, 1396 flow [2025-03-17 19:44:31,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 237 transitions, 1396 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:44:31,986 INFO L231 Difference]: Finished difference. Result has 173 places, 194 transitions, 940 flow [2025-03-17 19:44:31,986 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=940, PETRI_PLACES=173, PETRI_TRANSITIONS=194} [2025-03-17 19:44:31,987 INFO L279 CegarLoopForPetriNet]: 133 programPoint places, 40 predicate places. [2025-03-17 19:44:31,987 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 194 transitions, 940 flow [2025-03-17 19:44:31,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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 19:44:31,987 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:31,987 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-03-17 19:44:31,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 19:44:31,987 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2025-03-17 19:44:31,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:31,987 INFO L85 PathProgramCache]: Analyzing trace with hash 811970057, now seen corresponding path program 2 times [2025-03-17 19:44:31,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:31,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787026983] [2025-03-17 19:44:31,988 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:44:31,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:31,994 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-17 19:44:31,997 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-17 19:44:31,998 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:44:31,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:32,025 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 19:44:32,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:32,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787026983] [2025-03-17 19:44:32,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787026983] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:32,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426403147] [2025-03-17 19:44:32,026 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:44:32,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:32,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:32,028 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 19:44:32,030 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 19:44:32,077 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-17 19:44:32,085 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-17 19:44:32,085 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:44:32,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:32,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 19:44:32,087 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:32,113 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 19:44:32,114 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:32,136 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 19:44:32,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426403147] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:32,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:32,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-03-17 19:44:32,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642271919] [2025-03-17 19:44:32,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:32,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:44:32,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:32,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:44:32,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:44:32,147 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 143 [2025-03-17 19:44:32,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 194 transitions, 940 flow. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 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 19:44:32,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:32,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 143 [2025-03-17 19:44:32,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:34,478 INFO L124 PetriNetUnfolderBase]: 13980/30830 cut-off events. [2025-03-17 19:44:34,478 INFO L125 PetriNetUnfolderBase]: For 20623/22182 co-relation queries the response was YES. [2025-03-17 19:44:34,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67250 conditions, 30830 events. 13980/30830 cut-off events. For 20623/22182 co-relation queries the response was YES. Maximal size of possible extension queue 1426. Compared 334497 event pairs, 9883 based on Foata normal form. 822/27899 useless extension candidates. Maximal degree in co-relation 67074. Up to 18186 conditions per place. [2025-03-17 19:44:34,760 INFO L140 encePairwiseOnDemand]: 138/143 looper letters, 100 selfloop transitions, 16 changer transitions 0/193 dead transitions. [2025-03-17 19:44:34,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 193 transitions, 1162 flow [2025-03-17 19:44:34,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:44:34,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:44:34,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 379 transitions. [2025-03-17 19:44:34,762 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6625874125874126 [2025-03-17 19:44:34,762 INFO L175 Difference]: Start difference. First operand has 173 places, 194 transitions, 940 flow. Second operand 4 states and 379 transitions. [2025-03-17 19:44:34,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 193 transitions, 1162 flow [2025-03-17 19:44:34,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 193 transitions, 1126 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:44:34,913 INFO L231 Difference]: Finished difference. Result has 172 places, 193 transitions, 926 flow [2025-03-17 19:44:34,914 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=926, PETRI_PLACES=172, PETRI_TRANSITIONS=193} [2025-03-17 19:44:34,914 INFO L279 CegarLoopForPetriNet]: 133 programPoint places, 39 predicate places. [2025-03-17 19:44:34,914 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 193 transitions, 926 flow [2025-03-17 19:44:34,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 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 19:44:34,914 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:34,914 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2025-03-17 19:44:34,921 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 19:44:35,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:35,115 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2025-03-17 19:44:35,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:35,115 INFO L85 PathProgramCache]: Analyzing trace with hash 576566104, now seen corresponding path program 1 times [2025-03-17 19:44:35,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:35,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878814684] [2025-03-17 19:44:35,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:35,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:35,123 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:44:35,128 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:44:35,128 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:35,128 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:35,195 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-17 19:44:35,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:35,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878814684] [2025-03-17 19:44:35,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878814684] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:35,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:44:35,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:44:35,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819341060] [2025-03-17 19:44:35,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:35,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:44:35,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:35,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:44:35,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:44:35,196 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 143 [2025-03-17 19:44:35,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 193 transitions, 926 flow. Second operand has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 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 19:44:35,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:35,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 143 [2025-03-17 19:44:35,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:37,703 INFO L124 PetriNetUnfolderBase]: 13970/30790 cut-off events. [2025-03-17 19:44:37,703 INFO L125 PetriNetUnfolderBase]: For 20478/22037 co-relation queries the response was YES. [2025-03-17 19:44:37,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67086 conditions, 30790 events. 13970/30790 cut-off events. For 20478/22037 co-relation queries the response was YES. Maximal size of possible extension queue 1426. Compared 334128 event pairs, 9883 based on Foata normal form. 823/27861 useless extension candidates. Maximal degree in co-relation 66973. Up to 18150 conditions per place. [2025-03-17 19:44:38,024 INFO L140 encePairwiseOnDemand]: 134/143 looper letters, 92 selfloop transitions, 16 changer transitions 0/187 dead transitions. [2025-03-17 19:44:38,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 187 transitions, 1062 flow [2025-03-17 19:44:38,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:44:38,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:44:38,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 413 transitions. [2025-03-17 19:44:38,026 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.722027972027972 [2025-03-17 19:44:38,026 INFO L175 Difference]: Start difference. First operand has 172 places, 193 transitions, 926 flow. Second operand 4 states and 413 transitions. [2025-03-17 19:44:38,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 187 transitions, 1062 flow [2025-03-17 19:44:38,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 187 transitions, 1018 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 19:44:38,160 INFO L231 Difference]: Finished difference. Result has 172 places, 187 transitions, 841 flow [2025-03-17 19:44:38,160 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=841, PETRI_PLACES=172, PETRI_TRANSITIONS=187} [2025-03-17 19:44:38,160 INFO L279 CegarLoopForPetriNet]: 133 programPoint places, 39 predicate places. [2025-03-17 19:44:38,160 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 187 transitions, 841 flow [2025-03-17 19:44:38,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 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 19:44:38,161 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:38,161 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:38,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 19:44:38,161 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2025-03-17 19:44:38,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:38,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1220687544, now seen corresponding path program 1 times [2025-03-17 19:44:38,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:38,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946205854] [2025-03-17 19:44:38,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:38,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:38,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:44:38,195 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:44:38,195 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:38,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:38,656 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 19:44:38,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:38,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946205854] [2025-03-17 19:44:38,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946205854] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:38,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430619911] [2025-03-17 19:44:38,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:38,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:38,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:38,661 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 19:44:38,662 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 19:44:38,713 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:44:38,734 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:44:38,734 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:38,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:38,736 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-17 19:44:38,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:38,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2025-03-17 19:44:38,779 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 19:44:38,822 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2025-03-17 19:44:38,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2025-03-17 19:44:38,851 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 18 treesize of output 13 [2025-03-17 19:44:38,923 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2025-03-17 19:44:38,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2025-03-17 19:44:38,949 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 18 treesize of output 13 [2025-03-17 19:44:38,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-03-17 19:44:39,014 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 19:44:39,014 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:39,268 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 19:44:39,268 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2025-03-17 19:44:39,285 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 19:44:39,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 135 [2025-03-17 19:44:39,295 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 27 treesize of output 25 [2025-03-17 19:44:39,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2025-03-17 19:44:39,391 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 19:44:39,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430619911] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:39,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:39,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2025-03-17 19:44:39,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614265329] [2025-03-17 19:44:39,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:39,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-17 19:44:39,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:39,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-17 19:44:39,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=501, Unknown=3, NotChecked=0, Total=600 [2025-03-17 19:44:39,461 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 143 [2025-03-17 19:44:39,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 187 transitions, 841 flow. Second operand has 25 states, 25 states have (on average 78.72) internal successors, (1968), 25 states have internal predecessors, (1968), 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 19:44:39,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:39,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 143 [2025-03-17 19:44:39,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:48,187 INFO L124 PetriNetUnfolderBase]: 60182/99291 cut-off events. [2025-03-17 19:44:48,187 INFO L125 PetriNetUnfolderBase]: For 71933/79598 co-relation queries the response was YES. [2025-03-17 19:44:48,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240534 conditions, 99291 events. 60182/99291 cut-off events. For 71933/79598 co-relation queries the response was YES. Maximal size of possible extension queue 3321. Compared 922190 event pairs, 17497 based on Foata normal form. 4051/94905 useless extension candidates. Maximal degree in co-relation 240424. Up to 29364 conditions per place. [2025-03-17 19:44:49,014 INFO L140 encePairwiseOnDemand]: 124/143 looper letters, 271 selfloop transitions, 35 changer transitions 0/376 dead transitions. [2025-03-17 19:44:49,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 376 transitions, 2186 flow [2025-03-17 19:44:49,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-17 19:44:49,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-17 19:44:49,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1237 transitions. [2025-03-17 19:44:49,017 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6654115115653577 [2025-03-17 19:44:49,017 INFO L175 Difference]: Start difference. First operand has 172 places, 187 transitions, 841 flow. Second operand 13 states and 1237 transitions. [2025-03-17 19:44:49,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 376 transitions, 2186 flow [2025-03-17 19:44:49,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 376 transitions, 2152 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:44:49,278 INFO L231 Difference]: Finished difference. Result has 184 places, 199 transitions, 989 flow [2025-03-17 19:44:49,278 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=989, PETRI_PLACES=184, PETRI_TRANSITIONS=199} [2025-03-17 19:44:49,279 INFO L279 CegarLoopForPetriNet]: 133 programPoint places, 51 predicate places. [2025-03-17 19:44:49,279 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 199 transitions, 989 flow [2025-03-17 19:44:49,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 78.72) internal successors, (1968), 25 states have internal predecessors, (1968), 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 19:44:49,280 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:49,280 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:49,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 19:44:49,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:49,481 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2025-03-17 19:44:49,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:49,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1378508286, now seen corresponding path program 1 times [2025-03-17 19:44:49,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:49,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727211432] [2025-03-17 19:44:49,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:49,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:49,489 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:44:49,494 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:44:49,494 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:49,494 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:49,615 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-17 19:44:49,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:49,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727211432] [2025-03-17 19:44:49,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727211432] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:49,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041131489] [2025-03-17 19:44:49,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:49,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:49,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:49,620 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 19:44:49,622 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 19:44:49,669 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:44:49,683 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:44:49,683 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:49,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:49,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-17 19:44:49,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:49,762 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-17 19:44:49,763 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:49,840 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-17 19:44:49,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041131489] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:49,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:49,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2025-03-17 19:44:49,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295677612] [2025-03-17 19:44:49,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:49,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-17 19:44:49,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:49,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-17 19:44:49,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2025-03-17 19:44:49,924 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 143 [2025-03-17 19:44:49,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 199 transitions, 989 flow. Second operand has 19 states, 19 states have (on average 81.21052631578948) internal successors, (1543), 19 states have internal predecessors, (1543), 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 19:44:49,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:49,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 143 [2025-03-17 19:44:49,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand