./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-send-receive.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 798a7b37 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-send-receive.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 4eda2bf92bccdcc8638b67653fb7fdefc015ff9c815b317ad1009deb61d04585 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 15:30:07,730 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 15:30:07,785 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-04 15:30:07,791 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 15:30:07,791 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 15:30:07,812 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 15:30:07,812 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 15:30:07,813 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 15:30:07,813 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 15:30:07,813 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 15:30:07,813 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 15:30:07,813 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 15:30:07,813 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 15:30:07,813 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 15:30:07,814 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 15:30:07,814 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 15:30:07,814 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 15:30:07,814 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 15:30:07,814 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 15:30:07,814 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 15:30:07,814 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 15:30:07,814 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 15:30:07,814 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 15:30:07,814 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 15:30:07,814 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 15:30:07,814 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 15:30:07,814 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 15:30:07,815 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 15:30:07,815 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 15:30:07,815 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 15:30:07,815 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 15:30:07,815 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 15:30:07,815 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 15:30:07,815 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 15:30:07,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:30:07,815 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 15:30:07,815 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 15:30:07,815 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 15:30:07,815 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 15:30:07,816 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 15:30:07,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 15:30:07,816 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 15:30:07,816 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 15:30:07,816 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 15:30:07,816 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 15:30:07,816 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 -> 4eda2bf92bccdcc8638b67653fb7fdefc015ff9c815b317ad1009deb61d04585 [2025-03-04 15:30:08,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 15:30:08,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 15:30:08,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 15:30:08,035 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 15:30:08,035 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 15:30:08,036 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-send-receive.wvr.c [2025-03-04 15:30:09,163 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ed29dfd6/683a1d02de8e4acd92970310af225151/FLAG1516d0fa0 [2025-03-04 15:30:09,400 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 15:30:09,400 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-send-receive.wvr.c [2025-03-04 15:30:09,408 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ed29dfd6/683a1d02de8e4acd92970310af225151/FLAG1516d0fa0 [2025-03-04 15:30:09,738 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ed29dfd6/683a1d02de8e4acd92970310af225151 [2025-03-04 15:30:09,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 15:30:09,741 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 15:30:09,742 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 15:30:09,742 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 15:30:09,745 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 15:30:09,745 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:30:09" (1/1) ... [2025-03-04 15:30:09,746 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f72b880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:30:09, skipping insertion in model container [2025-03-04 15:30:09,746 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:30:09" (1/1) ... [2025-03-04 15:30:09,757 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 15:30:09,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:30:09,895 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 15:30:09,918 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:30:09,931 INFO L204 MainTranslator]: Completed translation [2025-03-04 15:30:09,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:30:09 WrapperNode [2025-03-04 15:30:09,932 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 15:30:09,933 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 15:30:09,933 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 15:30:09,933 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 15:30:09,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:30:09" (1/1) ... [2025-03-04 15:30:09,949 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:30:09" (1/1) ... [2025-03-04 15:30:09,969 INFO L138 Inliner]: procedures = 24, calls = 38, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 151 [2025-03-04 15:30:09,969 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 15:30:09,970 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 15:30:09,970 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 15:30:09,970 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 15:30:09,976 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:30:09" (1/1) ... [2025-03-04 15:30:09,976 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:30:09" (1/1) ... [2025-03-04 15:30:09,979 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:30:09" (1/1) ... [2025-03-04 15:30:09,997 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-03-04 15:30:09,997 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:30:09" (1/1) ... [2025-03-04 15:30:09,997 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:30:09" (1/1) ... [2025-03-04 15:30:10,004 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:30:09" (1/1) ... [2025-03-04 15:30:10,008 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:30:09" (1/1) ... [2025-03-04 15:30:10,009 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:30:09" (1/1) ... [2025-03-04 15:30:10,009 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:30:09" (1/1) ... [2025-03-04 15:30:10,010 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 15:30:10,011 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 15:30:10,011 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 15:30:10,011 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 15:30:10,012 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:30:09" (1/1) ... [2025-03-04 15:30:10,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:30:10,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:30:10,035 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) [2025-03-04 15:30:10,037 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 [2025-03-04 15:30:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 15:30:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-04 15:30:10,053 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-04 15:30:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-04 15:30:10,053 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-04 15:30:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-04 15:30:10,053 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-04 15:30:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 15:30:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 15:30:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 15:30:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 15:30:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-04 15:30:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-04 15:30:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 15:30:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 15:30:10,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 15:30:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 15:30:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 15:30:10,054 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 15:30:10,125 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 15:30:10,126 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 15:30:10,348 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 15:30:10,348 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 15:30:10,492 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 15:30:10,493 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 15:30:10,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:30:10 BoogieIcfgContainer [2025-03-04 15:30:10,493 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 15:30:10,495 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 15:30:10,496 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 15:30:10,499 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 15:30:10,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 03:30:09" (1/3) ... [2025-03-04 15:30:10,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7093e0f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:30:10, skipping insertion in model container [2025-03-04 15:30:10,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:30:09" (2/3) ... [2025-03-04 15:30:10,500 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7093e0f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:30:10, skipping insertion in model container [2025-03-04 15:30:10,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:30:10" (3/3) ... [2025-03-04 15:30:10,501 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-send-receive.wvr.c [2025-03-04 15:30:10,511 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 15:30:10,512 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-send-receive.wvr.c that has 4 procedures, 44 locations, 1 initial locations, 3 loop locations, and 10 error locations. [2025-03-04 15:30:10,512 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 15:30:10,568 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-04 15:30:10,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 47 transitions, 115 flow [2025-03-04 15:30:10,623 INFO L124 PetriNetUnfolderBase]: 4/44 cut-off events. [2025-03-04 15:30:10,626 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-04 15:30:10,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 4/44 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 107 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2025-03-04 15:30:10,633 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 47 transitions, 115 flow [2025-03-04 15:30:10,635 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 41 transitions, 94 flow [2025-03-04 15:30:10,640 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:30:10,650 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;@5c3e2b3d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:30:10,650 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-03-04 15:30:10,654 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:30:10,654 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-04 15:30:10,654 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:30:10,654 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:10,654 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-04 15:30:10,655 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-04 15:30:10,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:10,659 INFO L85 PathProgramCache]: Analyzing trace with hash 408282, now seen corresponding path program 1 times [2025-03-04 15:30:10,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:10,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675886783] [2025-03-04 15:30:10,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:10,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:10,721 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 15:30:10,743 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 15:30:10,744 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:10,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:10,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:10,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:10,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675886783] [2025-03-04 15:30:10,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675886783] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:30:10,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:30:10,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:30:10,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888837435] [2025-03-04 15:30:10,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:30:10,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:30:10,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:10,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:30:10,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:30:10,921 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2025-03-04 15:30:10,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2025-03-04 15:30:10,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:10,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2025-03-04 15:30:10,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:11,241 INFO L124 PetriNetUnfolderBase]: 1316/2071 cut-off events. [2025-03-04 15:30:11,241 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2025-03-04 15:30:11,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4189 conditions, 2071 events. 1316/2071 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 11698 event pairs, 1114 based on Foata normal form. 1/1463 useless extension candidates. Maximal degree in co-relation 3964. Up to 1926 conditions per place. [2025-03-04 15:30:11,255 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 32 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2025-03-04 15:30:11,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 43 transitions, 170 flow [2025-03-04 15:30:11,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:30:11,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:30:11,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2025-03-04 15:30:11,265 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42021276595744683 [2025-03-04 15:30:11,266 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 94 flow. Second operand 4 states and 79 transitions. [2025-03-04 15:30:11,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 43 transitions, 170 flow [2025-03-04 15:30:11,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 164 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-04 15:30:11,274 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 115 flow [2025-03-04 15:30:11,276 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=115, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2025-03-04 15:30:11,280 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 0 predicate places. [2025-03-04 15:30:11,280 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 115 flow [2025-03-04 15:30:11,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2025-03-04 15:30:11,280 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:11,280 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-04 15:30:11,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 15:30:11,281 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-04 15:30:11,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:11,281 INFO L85 PathProgramCache]: Analyzing trace with hash -721407789, now seen corresponding path program 1 times [2025-03-04 15:30:11,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:11,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013547771] [2025-03-04 15:30:11,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:11,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:11,289 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 15:30:11,305 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 15:30:11,305 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:11,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:11,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:11,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:11,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013547771] [2025-03-04 15:30:11,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013547771] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:30:11,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795010671] [2025-03-04 15:30:11,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:11,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:11,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:30:11,408 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) [2025-03-04 15:30:11,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 15:30:11,461 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 15:30:11,472 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 15:30:11,472 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:11,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:11,474 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:30:11,476 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:30:11,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:11,514 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:30:11,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795010671] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:30:11,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:30:11,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-04 15:30:11,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653984301] [2025-03-04 15:30:11,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:30:11,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:30:11,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:11,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:30:11,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-04 15:30:11,522 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2025-03-04 15:30:11,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 115 flow. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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) [2025-03-04 15:30:11,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:11,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2025-03-04 15:30:11,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:11,741 INFO L124 PetriNetUnfolderBase]: 1316/2070 cut-off events. [2025-03-04 15:30:11,741 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2025-03-04 15:30:11,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4167 conditions, 2070 events. 1316/2070 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 11693 event pairs, 1114 based on Foata normal form. 1/1463 useless extension candidates. Maximal degree in co-relation 4140. Up to 1921 conditions per place. [2025-03-04 15:30:11,752 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 28 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2025-03-04 15:30:11,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 181 flow [2025-03-04 15:30:11,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:30:11,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:30:11,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2025-03-04 15:30:11,755 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3404255319148936 [2025-03-04 15:30:11,755 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 115 flow. Second operand 6 states and 96 transitions. [2025-03-04 15:30:11,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 181 flow [2025-03-04 15:30:11,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 42 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:30:11,756 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 122 flow [2025-03-04 15:30:11,756 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=122, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2025-03-04 15:30:11,756 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 3 predicate places. [2025-03-04 15:30:11,756 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 122 flow [2025-03-04 15:30:11,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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) [2025-03-04 15:30:11,757 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:11,757 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-04 15:30:11,764 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 15:30:11,957 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 [2025-03-04 15:30:11,957 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-04 15:30:11,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:11,958 INFO L85 PathProgramCache]: Analyzing trace with hash -888804613, now seen corresponding path program 1 times [2025-03-04 15:30:11,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:11,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559253925] [2025-03-04 15:30:11,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:11,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:11,963 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:30:11,968 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:30:11,968 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:11,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:12,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:12,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:12,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559253925] [2025-03-04 15:30:12,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559253925] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:30:12,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612660756] [2025-03-04 15:30:12,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:12,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:12,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:30:12,060 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) [2025-03-04 15:30:12,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 15:30:12,099 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:30:12,107 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:30:12,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:12,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:12,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:30:12,108 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:30:12,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:12,128 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:30:12,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:12,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612660756] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:30:12,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:30:12,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-04 15:30:12,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279154967] [2025-03-04 15:30:12,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:30:12,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-04 15:30:12,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:12,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-04 15:30:12,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-04 15:30:12,183 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2025-03-04 15:30:12,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 122 flow. Second operand has 12 states, 12 states have (on average 11.083333333333334) internal successors, (133), 12 states have internal predecessors, (133), 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) [2025-03-04 15:30:12,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:12,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2025-03-04 15:30:12,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:12,380 INFO L124 PetriNetUnfolderBase]: 1319/2082 cut-off events. [2025-03-04 15:30:12,380 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2025-03-04 15:30:12,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4211 conditions, 2082 events. 1319/2082 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 11804 event pairs, 1114 based on Foata normal form. 3/1475 useless extension candidates. Maximal degree in co-relation 4141. Up to 1928 conditions per place. [2025-03-04 15:30:12,388 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 31 selfloop transitions, 13 changer transitions 0/51 dead transitions. [2025-03-04 15:30:12,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 51 transitions, 264 flow [2025-03-04 15:30:12,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 15:30:12,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 15:30:12,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2025-03-04 15:30:12,389 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3127659574468085 [2025-03-04 15:30:12,389 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 122 flow. Second operand 10 states and 147 transitions. [2025-03-04 15:30:12,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 51 transitions, 264 flow [2025-03-04 15:30:12,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 51 transitions, 218 flow, removed 8 selfloop flow, removed 5 redundant places. [2025-03-04 15:30:12,391 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 174 flow [2025-03-04 15:30:12,391 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=174, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2025-03-04 15:30:12,391 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 10 predicate places. [2025-03-04 15:30:12,393 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 174 flow [2025-03-04 15:30:12,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.083333333333334) internal successors, (133), 12 states have internal predecessors, (133), 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) [2025-03-04 15:30:12,393 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:12,393 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:30:12,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-04 15:30:12,593 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 [2025-03-04 15:30:12,594 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-04 15:30:12,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:12,594 INFO L85 PathProgramCache]: Analyzing trace with hash -812878162, now seen corresponding path program 1 times [2025-03-04 15:30:12,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:12,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200138083] [2025-03-04 15:30:12,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:12,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:12,598 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:30:12,603 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:30:12,603 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:12,604 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:12,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:12,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:12,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200138083] [2025-03-04 15:30:12,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200138083] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:30:12,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:30:12,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 15:30:12,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419136753] [2025-03-04 15:30:12,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:30:12,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:30:12,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:12,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:30:12,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:30:12,651 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2025-03-04 15:30:12,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2025-03-04 15:30:12,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:12,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2025-03-04 15:30:12,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:12,823 INFO L124 PetriNetUnfolderBase]: 1520/2447 cut-off events. [2025-03-04 15:30:12,823 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2025-03-04 15:30:12,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4912 conditions, 2447 events. 1520/2447 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 13489 event pairs, 634 based on Foata normal form. 73/1816 useless extension candidates. Maximal degree in co-relation 4878. Up to 1578 conditions per place. [2025-03-04 15:30:12,835 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 55 selfloop transitions, 3 changer transitions 1/67 dead transitions. [2025-03-04 15:30:12,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 67 transitions, 327 flow [2025-03-04 15:30:12,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:30:12,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:30:12,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2025-03-04 15:30:12,839 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2025-03-04 15:30:12,839 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 174 flow. Second operand 3 states and 87 transitions. [2025-03-04 15:30:12,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 67 transitions, 327 flow [2025-03-04 15:30:12,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 67 transitions, 316 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-04 15:30:12,842 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 188 flow [2025-03-04 15:30:12,843 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2025-03-04 15:30:12,843 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 11 predicate places. [2025-03-04 15:30:12,845 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 188 flow [2025-03-04 15:30:12,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2025-03-04 15:30:12,845 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:12,845 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:30:12,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 15:30:12,845 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-04 15:30:12,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:12,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1303044135, now seen corresponding path program 1 times [2025-03-04 15:30:12,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:12,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828388068] [2025-03-04 15:30:12,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:12,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:12,853 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 15:30:12,860 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 15:30:12,860 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:12,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:12,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:12,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:12,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828388068] [2025-03-04 15:30:12,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828388068] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:30:12,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:30:12,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:30:12,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656414072] [2025-03-04 15:30:12,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:30:12,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:30:12,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:12,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:30:12,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:30:12,908 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2025-03-04 15:30:12,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2025-03-04 15:30:12,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:12,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2025-03-04 15:30:12,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:13,048 INFO L124 PetriNetUnfolderBase]: 1176/1949 cut-off events. [2025-03-04 15:30:13,050 INFO L125 PetriNetUnfolderBase]: For 267/267 co-relation queries the response was YES. [2025-03-04 15:30:13,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4274 conditions, 1949 events. 1176/1949 cut-off events. For 267/267 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10493 event pairs, 330 based on Foata normal form. 0/1628 useless extension candidates. Maximal degree in co-relation 4239. Up to 1436 conditions per place. [2025-03-04 15:30:13,060 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 51 selfloop transitions, 1 changer transitions 1/61 dead transitions. [2025-03-04 15:30:13,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 313 flow [2025-03-04 15:30:13,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:30:13,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:30:13,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2025-03-04 15:30:13,061 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5460992907801419 [2025-03-04 15:30:13,061 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 188 flow. Second operand 3 states and 77 transitions. [2025-03-04 15:30:13,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 313 flow [2025-03-04 15:30:13,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 61 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:30:13,065 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 188 flow [2025-03-04 15:30:13,065 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2025-03-04 15:30:13,065 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 11 predicate places. [2025-03-04 15:30:13,066 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 188 flow [2025-03-04 15:30:13,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2025-03-04 15:30:13,066 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:13,066 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:30:13,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 15:30:13,066 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-04 15:30:13,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:13,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1303044136, now seen corresponding path program 1 times [2025-03-04 15:30:13,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:13,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602801417] [2025-03-04 15:30:13,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:13,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:13,071 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 15:30:13,079 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 15:30:13,079 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:13,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:13,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:13,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:13,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602801417] [2025-03-04 15:30:13,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602801417] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:30:13,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:30:13,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:30:13,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101835365] [2025-03-04 15:30:13,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:30:13,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:30:13,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:13,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:30:13,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:30:13,147 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2025-03-04 15:30:13,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:30:13,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:13,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2025-03-04 15:30:13,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:13,340 INFO L124 PetriNetUnfolderBase]: 1345/2214 cut-off events. [2025-03-04 15:30:13,340 INFO L125 PetriNetUnfolderBase]: For 346/346 co-relation queries the response was YES. [2025-03-04 15:30:13,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4913 conditions, 2214 events. 1345/2214 cut-off events. For 346/346 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11649 event pairs, 1148 based on Foata normal form. 27/2009 useless extension candidates. Maximal degree in co-relation 4878. Up to 1734 conditions per place. [2025-03-04 15:30:13,351 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 41 selfloop transitions, 2 changer transitions 15/66 dead transitions. [2025-03-04 15:30:13,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 66 transitions, 338 flow [2025-03-04 15:30:13,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:30:13,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:30:13,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2025-03-04 15:30:13,352 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5053191489361702 [2025-03-04 15:30:13,352 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 188 flow. Second operand 4 states and 95 transitions. [2025-03-04 15:30:13,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 66 transitions, 338 flow [2025-03-04 15:30:13,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 66 transitions, 338 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 15:30:13,354 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 191 flow [2025-03-04 15:30:13,354 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=191, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2025-03-04 15:30:13,355 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 15 predicate places. [2025-03-04 15:30:13,355 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 191 flow [2025-03-04 15:30:13,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:30:13,358 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:13,358 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:30:13,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 15:30:13,359 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-04 15:30:13,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:13,359 INFO L85 PathProgramCache]: Analyzing trace with hash 679997455, now seen corresponding path program 1 times [2025-03-04 15:30:13,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:13,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282592827] [2025-03-04 15:30:13,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:13,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:13,365 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 15:30:13,371 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 15:30:13,371 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:13,371 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:13,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:13,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:13,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282592827] [2025-03-04 15:30:13,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282592827] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:30:13,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092956449] [2025-03-04 15:30:13,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:13,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:13,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:30:13,462 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) [2025-03-04 15:30:13,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 15:30:13,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 15:30:13,518 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 15:30:13,519 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:13,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:13,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 15:30:13,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:30:13,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:30:13,554 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:30:13,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092956449] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:30:13,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:30:13,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2025-03-04 15:30:13,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68559853] [2025-03-04 15:30:13,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:30:13,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:30:13,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:13,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:30:13,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-04 15:30:13,559 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2025-03-04 15:30:13,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:30:13,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:13,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2025-03-04 15:30:13,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:13,683 INFO L124 PetriNetUnfolderBase]: 755/1299 cut-off events. [2025-03-04 15:30:13,683 INFO L125 PetriNetUnfolderBase]: For 317/317 co-relation queries the response was YES. [2025-03-04 15:30:13,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2920 conditions, 1299 events. 755/1299 cut-off events. For 317/317 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6480 event pairs, 443 based on Foata normal form. 156/1302 useless extension candidates. Maximal degree in co-relation 2896. Up to 878 conditions per place. [2025-03-04 15:30:13,689 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 41 selfloop transitions, 7 changer transitions 4/60 dead transitions. [2025-03-04 15:30:13,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 60 transitions, 320 flow [2025-03-04 15:30:13,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:30:13,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:30:13,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2025-03-04 15:30:13,691 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4787234042553192 [2025-03-04 15:30:13,691 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 191 flow. Second operand 4 states and 90 transitions. [2025-03-04 15:30:13,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 60 transitions, 320 flow [2025-03-04 15:30:13,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 60 transitions, 314 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-03-04 15:30:13,694 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 186 flow [2025-03-04 15:30:13,694 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=58, PETRI_TRANSITIONS=46} [2025-03-04 15:30:13,695 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 11 predicate places. [2025-03-04 15:30:13,695 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 186 flow [2025-03-04 15:30:13,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:30:13,696 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:13,696 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-03-04 15:30:13,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-04 15:30:13,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:13,899 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-04 15:30:13,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:13,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1137499924, now seen corresponding path program 2 times [2025-03-04 15:30:13,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:13,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817355895] [2025-03-04 15:30:13,900 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:30:13,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:13,907 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-04 15:30:13,909 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-04 15:30:13,910 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:30:13,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:13,929 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 15:30:13,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:13,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817355895] [2025-03-04 15:30:13,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817355895] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:30:13,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767837087] [2025-03-04 15:30:13,930 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:30:13,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:13,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:30:13,932 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) [2025-03-04 15:30:13,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 15:30:13,971 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-04 15:30:13,976 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-04 15:30:13,976 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:30:13,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:13,977 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 15:30:13,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:30:13,995 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 15:30:13,996 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:30:14,013 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 15:30:14,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767837087] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:30:14,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:30:14,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-03-04 15:30:14,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833501243] [2025-03-04 15:30:14,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:30:14,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:30:14,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:14,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:30:14,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:30:14,017 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2025-03-04 15:30:14,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2025-03-04 15:30:14,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:14,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2025-03-04 15:30:14,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:14,093 INFO L124 PetriNetUnfolderBase]: 533/915 cut-off events. [2025-03-04 15:30:14,093 INFO L125 PetriNetUnfolderBase]: For 516/516 co-relation queries the response was YES. [2025-03-04 15:30:14,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2251 conditions, 915 events. 533/915 cut-off events. For 516/516 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4206 event pairs, 401 based on Foata normal form. 1/792 useless extension candidates. Maximal degree in co-relation 2225. Up to 778 conditions per place. [2025-03-04 15:30:14,097 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 23 selfloop transitions, 15 changer transitions 0/45 dead transitions. [2025-03-04 15:30:14,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 45 transitions, 252 flow [2025-03-04 15:30:14,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:30:14,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:30:14,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2025-03-04 15:30:14,097 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34574468085106386 [2025-03-04 15:30:14,097 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 186 flow. Second operand 4 states and 65 transitions. [2025-03-04 15:30:14,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 45 transitions, 252 flow [2025-03-04 15:30:14,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 228 flow, removed 1 selfloop flow, removed 7 redundant places. [2025-03-04 15:30:14,099 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 182 flow [2025-03-04 15:30:14,100 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2025-03-04 15:30:14,100 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 4 predicate places. [2025-03-04 15:30:14,100 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 182 flow [2025-03-04 15:30:14,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2025-03-04 15:30:14,100 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:14,100 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:30:14,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-04 15:30:14,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:14,301 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-04 15:30:14,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:14,301 INFO L85 PathProgramCache]: Analyzing trace with hash -690237195, now seen corresponding path program 1 times [2025-03-04 15:30:14,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:14,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745732561] [2025-03-04 15:30:14,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:14,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:14,306 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 15:30:14,311 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 15:30:14,311 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:14,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:14,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:30:14,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:14,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745732561] [2025-03-04 15:30:14,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745732561] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:30:14,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:30:14,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:30:14,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545652643] [2025-03-04 15:30:14,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:30:14,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:30:14,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:14,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:30:14,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:30:14,349 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2025-03-04 15:30:14,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2025-03-04 15:30:14,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:14,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2025-03-04 15:30:14,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:14,439 INFO L124 PetriNetUnfolderBase]: 772/1209 cut-off events. [2025-03-04 15:30:14,439 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2025-03-04 15:30:14,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2827 conditions, 1209 events. 772/1209 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5602 event pairs, 305 based on Foata normal form. 16/1108 useless extension candidates. Maximal degree in co-relation 2752. Up to 879 conditions per place. [2025-03-04 15:30:14,445 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 48 selfloop transitions, 2 changer transitions 1/56 dead transitions. [2025-03-04 15:30:14,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 56 transitions, 312 flow [2025-03-04 15:30:14,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:30:14,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:30:14,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2025-03-04 15:30:14,448 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2025-03-04 15:30:14,449 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 182 flow. Second operand 3 states and 71 transitions. [2025-03-04 15:30:14,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 56 transitions, 312 flow [2025-03-04 15:30:14,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 56 transitions, 282 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:30:14,451 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 160 flow [2025-03-04 15:30:14,451 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2025-03-04 15:30:14,452 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 4 predicate places. [2025-03-04 15:30:14,453 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 160 flow [2025-03-04 15:30:14,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2025-03-04 15:30:14,453 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:14,453 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:30:14,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-04 15:30:14,453 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-04 15:30:14,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:14,454 INFO L85 PathProgramCache]: Analyzing trace with hash -690238249, now seen corresponding path program 1 times [2025-03-04 15:30:14,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:14,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572989745] [2025-03-04 15:30:14,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:14,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:14,460 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 15:30:14,473 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 15:30:14,475 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:14,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:14,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:14,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:14,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572989745] [2025-03-04 15:30:14,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572989745] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:30:14,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559420304] [2025-03-04 15:30:14,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:14,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:14,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:30:14,983 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) [2025-03-04 15:30:14,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 15:30:15,022 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 15:30:15,035 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 15:30:15,035 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:15,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:15,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-04 15:30:15,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:30:15,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-03-04 15:30:15,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:15,419 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:30:15,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2025-03-04 15:30:15,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2025-03-04 15:30:15,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:15,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559420304] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:30:15,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:30:15,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2025-03-04 15:30:15,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87519318] [2025-03-04 15:30:15,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:30:15,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-04 15:30:15,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:15,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-04 15:30:15,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2025-03-04 15:30:15,722 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2025-03-04 15:30:15,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 160 flow. Second operand has 18 states, 18 states have (on average 12.166666666666666) internal successors, (219), 18 states have internal predecessors, (219), 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) [2025-03-04 15:30:15,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:15,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2025-03-04 15:30:15,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:16,953 INFO L124 PetriNetUnfolderBase]: 1799/3117 cut-off events. [2025-03-04 15:30:16,954 INFO L125 PetriNetUnfolderBase]: For 657/657 co-relation queries the response was YES. [2025-03-04 15:30:16,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7262 conditions, 3117 events. 1799/3117 cut-off events. For 657/657 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 18633 event pairs, 562 based on Foata normal form. 8/2894 useless extension candidates. Maximal degree in co-relation 3487. Up to 819 conditions per place. [2025-03-04 15:30:16,967 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 100 selfloop transitions, 27 changer transitions 2/137 dead transitions. [2025-03-04 15:30:16,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 137 transitions, 678 flow [2025-03-04 15:30:16,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-04 15:30:16,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-04 15:30:16,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 278 transitions. [2025-03-04 15:30:16,968 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3943262411347518 [2025-03-04 15:30:16,968 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 160 flow. Second operand 15 states and 278 transitions. [2025-03-04 15:30:16,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 137 transitions, 678 flow [2025-03-04 15:30:16,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 137 transitions, 674 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:30:16,970 INFO L231 Difference]: Finished difference. Result has 71 places, 60 transitions, 340 flow [2025-03-04 15:30:16,970 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=340, PETRI_PLACES=71, PETRI_TRANSITIONS=60} [2025-03-04 15:30:16,971 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 24 predicate places. [2025-03-04 15:30:16,971 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 60 transitions, 340 flow [2025-03-04 15:30:16,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.166666666666666) internal successors, (219), 18 states have internal predecessors, (219), 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) [2025-03-04 15:30:16,971 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:16,971 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:30:16,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-04 15:30:17,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-04 15:30:17,172 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-04 15:30:17,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:17,172 INFO L85 PathProgramCache]: Analyzing trace with hash -2079488304, now seen corresponding path program 1 times [2025-03-04 15:30:17,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:17,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512067760] [2025-03-04 15:30:17,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:17,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:17,178 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 15:30:17,189 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 15:30:17,189 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:17,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:17,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:17,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:17,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512067760] [2025-03-04 15:30:17,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512067760] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:30:17,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330534972] [2025-03-04 15:30:17,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:17,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:17,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:30:17,537 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:30:17,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 15:30:17,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 15:30:17,594 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 15:30:17,594 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:17,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:17,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-04 15:30:17,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:30:17,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-03-04 15:30:17,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:17,893 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:30:18,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2025-03-04 15:30:18,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2025-03-04 15:30:18,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:18,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330534972] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:30:18,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:30:18,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2025-03-04 15:30:18,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570566087] [2025-03-04 15:30:18,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:30:18,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-04 15:30:18,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:18,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-04 15:30:18,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2025-03-04 15:30:18,144 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2025-03-04 15:30:18,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 60 transitions, 340 flow. Second operand has 17 states, 17 states have (on average 12.294117647058824) internal successors, (209), 17 states have internal predecessors, (209), 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) [2025-03-04 15:30:18,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:18,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2025-03-04 15:30:18,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:18,941 INFO L124 PetriNetUnfolderBase]: 1924/3328 cut-off events. [2025-03-04 15:30:18,941 INFO L125 PetriNetUnfolderBase]: For 5791/5791 co-relation queries the response was YES. [2025-03-04 15:30:18,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9605 conditions, 3328 events. 1924/3328 cut-off events. For 5791/5791 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 19923 event pairs, 541 based on Foata normal form. 88/3412 useless extension candidates. Maximal degree in co-relation 5950. Up to 1470 conditions per place. [2025-03-04 15:30:18,954 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 95 selfloop transitions, 21 changer transitions 2/126 dead transitions. [2025-03-04 15:30:18,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 126 transitions, 800 flow [2025-03-04 15:30:18,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-04 15:30:18,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-04 15:30:18,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 233 transitions. [2025-03-04 15:30:18,956 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.381342062193126 [2025-03-04 15:30:18,956 INFO L175 Difference]: Start difference. First operand has 71 places, 60 transitions, 340 flow. Second operand 13 states and 233 transitions. [2025-03-04 15:30:18,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 126 transitions, 800 flow [2025-03-04 15:30:18,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 126 transitions, 771 flow, removed 10 selfloop flow, removed 4 redundant places. [2025-03-04 15:30:18,965 INFO L231 Difference]: Finished difference. Result has 82 places, 64 transitions, 411 flow [2025-03-04 15:30:18,965 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=411, PETRI_PLACES=82, PETRI_TRANSITIONS=64} [2025-03-04 15:30:18,965 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 35 predicate places. [2025-03-04 15:30:18,965 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 64 transitions, 411 flow [2025-03-04 15:30:18,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 12.294117647058824) internal successors, (209), 17 states have internal predecessors, (209), 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) [2025-03-04 15:30:18,966 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:18,966 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:30:18,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-04 15:30:19,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:19,166 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-04 15:30:19,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:19,167 INFO L85 PathProgramCache]: Analyzing trace with hash 572712301, now seen corresponding path program 1 times [2025-03-04 15:30:19,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:19,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508895830] [2025-03-04 15:30:19,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:19,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:19,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 15:30:19,177 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 15:30:19,178 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:19,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:19,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:19,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:19,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508895830] [2025-03-04 15:30:19,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508895830] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:30:19,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157583688] [2025-03-04 15:30:19,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:19,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:19,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:30:19,271 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:30:19,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 15:30:19,312 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 15:30:19,326 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 15:30:19,326 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:19,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:19,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 15:30:19,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:30:19,357 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:30:19,357 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:30:19,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157583688] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:30:19,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:30:19,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2025-03-04 15:30:19,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728458034] [2025-03-04 15:30:19,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:30:19,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:30:19,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:19,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:30:19,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-04 15:30:19,358 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2025-03-04 15:30:19,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 64 transitions, 411 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2025-03-04 15:30:19,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:19,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2025-03-04 15:30:19,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:19,636 INFO L124 PetriNetUnfolderBase]: 2770/4814 cut-off events. [2025-03-04 15:30:19,636 INFO L125 PetriNetUnfolderBase]: For 13164/13164 co-relation queries the response was YES. [2025-03-04 15:30:19,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14569 conditions, 4814 events. 2770/4814 cut-off events. For 13164/13164 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 30448 event pairs, 681 based on Foata normal form. 208/5012 useless extension candidates. Maximal degree in co-relation 11108. Up to 1889 conditions per place. [2025-03-04 15:30:19,652 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 74 selfloop transitions, 15 changer transitions 1/98 dead transitions. [2025-03-04 15:30:19,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 98 transitions, 773 flow [2025-03-04 15:30:19,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:30:19,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:30:19,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2025-03-04 15:30:19,653 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2025-03-04 15:30:19,653 INFO L175 Difference]: Start difference. First operand has 82 places, 64 transitions, 411 flow. Second operand 4 states and 102 transitions. [2025-03-04 15:30:19,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 98 transitions, 773 flow [2025-03-04 15:30:19,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 98 transitions, 751 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-03-04 15:30:19,666 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 547 flow [2025-03-04 15:30:19,666 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=547, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2025-03-04 15:30:19,666 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 32 predicate places. [2025-03-04 15:30:19,666 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 547 flow [2025-03-04 15:30:19,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2025-03-04 15:30:19,666 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:19,666 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:30:19,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-04 15:30:19,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:19,867 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-04 15:30:19,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:19,867 INFO L85 PathProgramCache]: Analyzing trace with hash 2144645168, now seen corresponding path program 2 times [2025-03-04 15:30:19,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:19,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111005750] [2025-03-04 15:30:19,867 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:30:19,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:19,872 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-03-04 15:30:19,888 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 23 statements. [2025-03-04 15:30:19,888 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:30:19,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:19,934 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-04 15:30:19,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:19,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111005750] [2025-03-04 15:30:19,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111005750] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:30:19,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:30:19,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:30:19,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332820428] [2025-03-04 15:30:19,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:30:19,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:30:19,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:19,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:30:19,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:30:19,936 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2025-03-04 15:30:19,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 547 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:30:19,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:19,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2025-03-04 15:30:19,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:20,220 INFO L124 PetriNetUnfolderBase]: 2879/4939 cut-off events. [2025-03-04 15:30:20,220 INFO L125 PetriNetUnfolderBase]: For 18500/18500 co-relation queries the response was YES. [2025-03-04 15:30:20,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16608 conditions, 4939 events. 2879/4939 cut-off events. For 18500/18500 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 30544 event pairs, 511 based on Foata normal form. 128/5057 useless extension candidates. Maximal degree in co-relation 11780. Up to 2447 conditions per place. [2025-03-04 15:30:20,241 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 76 selfloop transitions, 9 changer transitions 1/94 dead transitions. [2025-03-04 15:30:20,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 94 transitions, 821 flow [2025-03-04 15:30:20,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:30:20,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:30:20,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2025-03-04 15:30:20,242 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-03-04 15:30:20,242 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 547 flow. Second operand 4 states and 94 transitions. [2025-03-04 15:30:20,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 94 transitions, 821 flow [2025-03-04 15:30:20,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 94 transitions, 817 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-03-04 15:30:20,255 INFO L231 Difference]: Finished difference. Result has 83 places, 75 transitions, 597 flow [2025-03-04 15:30:20,255 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=597, PETRI_PLACES=83, PETRI_TRANSITIONS=75} [2025-03-04 15:30:20,255 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 36 predicate places. [2025-03-04 15:30:20,255 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 75 transitions, 597 flow [2025-03-04 15:30:20,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:30:20,255 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:20,256 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:30:20,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-04 15:30:20,256 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-04 15:30:20,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:20,256 INFO L85 PathProgramCache]: Analyzing trace with hash -2053854169, now seen corresponding path program 1 times [2025-03-04 15:30:20,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:20,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672576925] [2025-03-04 15:30:20,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:20,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:20,264 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-04 15:30:20,268 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-04 15:30:20,268 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:20,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:20,389 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:30:20,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:20,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672576925] [2025-03-04 15:30:20,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672576925] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:30:20,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148079077] [2025-03-04 15:30:20,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:20,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:20,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:30:20,392 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:30:20,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-04 15:30:20,432 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-04 15:30:20,447 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-04 15:30:20,447 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:20,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:20,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-04 15:30:20,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:30:20,542 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:30:20,542 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:30:20,647 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:30:20,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148079077] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:30:20,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:30:20,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2025-03-04 15:30:20,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278381337] [2025-03-04 15:30:20,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:30:20,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-04 15:30:20,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:20,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-04 15:30:20,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2025-03-04 15:30:20,669 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2025-03-04 15:30:20,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 75 transitions, 597 flow. Second operand has 18 states, 18 states have (on average 12.11111111111111) internal successors, (218), 18 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:30:20,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:20,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2025-03-04 15:30:20,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:21,050 INFO L124 PetriNetUnfolderBase]: 1911/3303 cut-off events. [2025-03-04 15:30:21,050 INFO L125 PetriNetUnfolderBase]: For 11884/11884 co-relation queries the response was YES. [2025-03-04 15:30:21,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11099 conditions, 3303 events. 1911/3303 cut-off events. For 11884/11884 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 19128 event pairs, 1375 based on Foata normal form. 32/3323 useless extension candidates. Maximal degree in co-relation 11077. Up to 2396 conditions per place. [2025-03-04 15:30:21,065 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 36 selfloop transitions, 10 changer transitions 31/85 dead transitions. [2025-03-04 15:30:21,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 85 transitions, 632 flow [2025-03-04 15:30:21,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 15:30:21,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-04 15:30:21,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2025-03-04 15:30:21,066 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3546099290780142 [2025-03-04 15:30:21,066 INFO L175 Difference]: Start difference. First operand has 83 places, 75 transitions, 597 flow. Second operand 9 states and 150 transitions. [2025-03-04 15:30:21,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 85 transitions, 632 flow [2025-03-04 15:30:21,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 85 transitions, 580 flow, removed 13 selfloop flow, removed 8 redundant places. [2025-03-04 15:30:21,081 INFO L231 Difference]: Finished difference. Result has 80 places, 54 transitions, 341 flow [2025-03-04 15:30:21,082 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=341, PETRI_PLACES=80, PETRI_TRANSITIONS=54} [2025-03-04 15:30:21,083 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 33 predicate places. [2025-03-04 15:30:21,083 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 54 transitions, 341 flow [2025-03-04 15:30:21,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.11111111111111) internal successors, (218), 18 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:30:21,083 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:21,083 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:30:21,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-04 15:30:21,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-04 15:30:21,287 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-04 15:30:21,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:21,287 INFO L85 PathProgramCache]: Analyzing trace with hash 980580391, now seen corresponding path program 1 times [2025-03-04 15:30:21,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:21,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639536619] [2025-03-04 15:30:21,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:21,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:21,292 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-04 15:30:21,300 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-04 15:30:21,300 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:21,300 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:21,373 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-04 15:30:21,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:21,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639536619] [2025-03-04 15:30:21,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639536619] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:30:21,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:30:21,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 15:30:21,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938255175] [2025-03-04 15:30:21,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:30:21,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:30:21,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:21,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:30:21,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:30:21,377 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2025-03-04 15:30:21,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 54 transitions, 341 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:30:21,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:21,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2025-03-04 15:30:21,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:21,674 INFO L124 PetriNetUnfolderBase]: 3514/5347 cut-off events. [2025-03-04 15:30:21,674 INFO L125 PetriNetUnfolderBase]: For 14483/14483 co-relation queries the response was YES. [2025-03-04 15:30:21,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17672 conditions, 5347 events. 3514/5347 cut-off events. For 14483/14483 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 28899 event pairs, 778 based on Foata normal form. 256/5601 useless extension candidates. Maximal degree in co-relation 17654. Up to 2600 conditions per place. [2025-03-04 15:30:21,697 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 71 selfloop transitions, 4 changer transitions 0/79 dead transitions. [2025-03-04 15:30:21,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 79 transitions, 636 flow [2025-03-04 15:30:21,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:30:21,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:30:21,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2025-03-04 15:30:21,700 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4521276595744681 [2025-03-04 15:30:21,700 INFO L175 Difference]: Start difference. First operand has 80 places, 54 transitions, 341 flow. Second operand 4 states and 85 transitions. [2025-03-04 15:30:21,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 79 transitions, 636 flow [2025-03-04 15:30:21,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 79 transitions, 601 flow, removed 3 selfloop flow, removed 8 redundant places. [2025-03-04 15:30:21,707 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 331 flow [2025-03-04 15:30:21,707 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=331, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2025-03-04 15:30:21,707 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 23 predicate places. [2025-03-04 15:30:21,707 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 331 flow [2025-03-04 15:30:21,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:30:21,708 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:21,708 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:30:21,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-04 15:30:21,708 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-04 15:30:21,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:21,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1098106615, now seen corresponding path program 1 times [2025-03-04 15:30:21,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:21,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723388042] [2025-03-04 15:30:21,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:21,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:21,717 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-04 15:30:21,734 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-04 15:30:21,734 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:21,734 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:22,258 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:22,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:22,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723388042] [2025-03-04 15:30:22,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723388042] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:30:22,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880031608] [2025-03-04 15:30:22,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:22,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:22,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:30:22,261 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:30:22,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-04 15:30:22,302 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-04 15:30:22,317 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-04 15:30:22,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:22,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:22,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-03-04 15:30:22,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:30:22,803 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:22,803 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:30:22,986 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 15:30:22,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 54 [2025-03-04 15:30:23,277 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:23,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880031608] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:30:23,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:30:23,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 31 [2025-03-04 15:30:23,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4071258] [2025-03-04 15:30:23,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:30:23,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-03-04 15:30:23,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:23,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-03-04 15:30:23,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=861, Unknown=0, NotChecked=0, Total=1056 [2025-03-04 15:30:23,359 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2025-03-04 15:30:23,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 331 flow. Second operand has 33 states, 33 states have (on average 11.818181818181818) internal successors, (390), 33 states have internal predecessors, (390), 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) [2025-03-04 15:30:23,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:23,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2025-03-04 15:30:23,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:25,865 INFO L124 PetriNetUnfolderBase]: 9215/15584 cut-off events. [2025-03-04 15:30:25,866 INFO L125 PetriNetUnfolderBase]: For 54491/54491 co-relation queries the response was YES. [2025-03-04 15:30:25,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51510 conditions, 15584 events. 9215/15584 cut-off events. For 54491/54491 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 111731 event pairs, 568 based on Foata normal form. 480/16060 useless extension candidates. Maximal degree in co-relation 51492. Up to 3817 conditions per place. [2025-03-04 15:30:25,942 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 278 selfloop transitions, 116 changer transitions 3/406 dead transitions. [2025-03-04 15:30:25,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 406 transitions, 2747 flow [2025-03-04 15:30:25,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-03-04 15:30:25,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2025-03-04 15:30:25,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 735 transitions. [2025-03-04 15:30:25,944 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43439716312056736 [2025-03-04 15:30:25,944 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 331 flow. Second operand 36 states and 735 transitions. [2025-03-04 15:30:25,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 406 transitions, 2747 flow [2025-03-04 15:30:25,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 406 transitions, 2741 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-03-04 15:30:25,961 INFO L231 Difference]: Finished difference. Result has 115 places, 169 transitions, 1752 flow [2025-03-04 15:30:25,961 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=1752, PETRI_PLACES=115, PETRI_TRANSITIONS=169} [2025-03-04 15:30:25,961 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 68 predicate places. [2025-03-04 15:30:25,961 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 169 transitions, 1752 flow [2025-03-04 15:30:25,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 11.818181818181818) internal successors, (390), 33 states have internal predecessors, (390), 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) [2025-03-04 15:30:25,962 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:25,962 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:30:25,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-04 15:30:26,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-04 15:30:26,166 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-04 15:30:26,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:26,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1793336442, now seen corresponding path program 1 times [2025-03-04 15:30:26,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:26,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250969366] [2025-03-04 15:30:26,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:26,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:26,175 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-04 15:30:26,185 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-04 15:30:26,185 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:26,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:26,641 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:26,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:26,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250969366] [2025-03-04 15:30:26,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250969366] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:30:26,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116123287] [2025-03-04 15:30:26,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:26,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:26,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:30:26,643 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:30:26,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-04 15:30:26,684 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-04 15:30:26,700 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-04 15:30:26,700 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:26,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:26,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-03-04 15:30:26,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:30:27,118 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:27,118 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:30:27,239 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 15:30:27,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 53 [2025-03-04 15:30:27,510 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:27,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116123287] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:30:27,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:30:27,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 32 [2025-03-04 15:30:27,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030312624] [2025-03-04 15:30:27,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:30:27,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-03-04 15:30:27,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:27,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-03-04 15:30:27,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=937, Unknown=0, NotChecked=0, Total=1122 [2025-03-04 15:30:27,553 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2025-03-04 15:30:27,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 169 transitions, 1752 flow. Second operand has 34 states, 34 states have (on average 11.764705882352942) internal successors, (400), 34 states have internal predecessors, (400), 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) [2025-03-04 15:30:27,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:27,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2025-03-04 15:30:27,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:30,456 INFO L124 PetriNetUnfolderBase]: 12697/21514 cut-off events. [2025-03-04 15:30:30,456 INFO L125 PetriNetUnfolderBase]: For 168770/168770 co-relation queries the response was YES. [2025-03-04 15:30:30,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88218 conditions, 21514 events. 12697/21514 cut-off events. For 168770/168770 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 162184 event pairs, 1304 based on Foata normal form. 256/21719 useless extension candidates. Maximal degree in co-relation 88189. Up to 8081 conditions per place. [2025-03-04 15:30:30,611 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 350 selfloop transitions, 128 changer transitions 6/493 dead transitions. [2025-03-04 15:30:30,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 493 transitions, 4874 flow [2025-03-04 15:30:30,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-03-04 15:30:30,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2025-03-04 15:30:30,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 613 transitions. [2025-03-04 15:30:30,614 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40757978723404253 [2025-03-04 15:30:30,614 INFO L175 Difference]: Start difference. First operand has 115 places, 169 transitions, 1752 flow. Second operand 32 states and 613 transitions. [2025-03-04 15:30:30,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 493 transitions, 4874 flow [2025-03-04 15:30:30,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 493 transitions, 3965 flow, removed 448 selfloop flow, removed 6 redundant places. [2025-03-04 15:30:30,745 INFO L231 Difference]: Finished difference. Result has 152 places, 249 transitions, 2516 flow [2025-03-04 15:30:30,745 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2516, PETRI_PLACES=152, PETRI_TRANSITIONS=249} [2025-03-04 15:30:30,746 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 105 predicate places. [2025-03-04 15:30:30,746 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 249 transitions, 2516 flow [2025-03-04 15:30:30,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 11.764705882352942) internal successors, (400), 34 states have internal predecessors, (400), 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) [2025-03-04 15:30:30,746 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:30,746 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:30:30,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-04 15:30:30,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-04 15:30:30,947 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-04 15:30:30,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:30,947 INFO L85 PathProgramCache]: Analyzing trace with hash 811869114, now seen corresponding path program 2 times [2025-03-04 15:30:30,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:30,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469840472] [2025-03-04 15:30:30,947 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:30:30,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:30,952 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-03-04 15:30:30,975 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-03-04 15:30:30,975 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:30:30,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:31,049 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-04 15:30:31,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:31,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469840472] [2025-03-04 15:30:31,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469840472] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:30:31,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626791638] [2025-03-04 15:30:31,050 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:30:31,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:31,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:30:31,051 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:30:31,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-04 15:30:31,094 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-03-04 15:30:31,110 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-03-04 15:30:31,110 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:30:31,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:31,111 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-04 15:30:31,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:30:31,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-03-04 15:30:31,458 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:31,458 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:30:31,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2025-03-04 15:30:31,758 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-03-04 15:30:31,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 47 [2025-03-04 15:30:31,850 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:31,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626791638] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:30:31,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:30:31,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 11, 11] total 26 [2025-03-04 15:30:31,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890573474] [2025-03-04 15:30:31,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:30:31,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-04 15:30:31,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:31,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-04 15:30:31,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=632, Unknown=0, NotChecked=0, Total=756 [2025-03-04 15:30:31,884 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2025-03-04 15:30:31,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 249 transitions, 2516 flow. Second operand has 28 states, 28 states have (on average 12.071428571428571) internal successors, (338), 28 states have internal predecessors, (338), 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) [2025-03-04 15:30:31,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:31,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2025-03-04 15:30:31,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:36,849 INFO L124 PetriNetUnfolderBase]: 19168/32473 cut-off events. [2025-03-04 15:30:36,849 INFO L125 PetriNetUnfolderBase]: For 364310/364310 co-relation queries the response was YES. [2025-03-04 15:30:37,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137262 conditions, 32473 events. 19168/32473 cut-off events. For 364310/364310 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 242350 event pairs, 1562 based on Foata normal form. 1224/33694 useless extension candidates. Maximal degree in co-relation 137220. Up to 5753 conditions per place. [2025-03-04 15:30:37,195 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 475 selfloop transitions, 211 changer transitions 14/709 dead transitions. [2025-03-04 15:30:37,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 709 transitions, 7230 flow [2025-03-04 15:30:37,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-03-04 15:30:37,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2025-03-04 15:30:37,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 898 transitions. [2025-03-04 15:30:37,198 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42458628841607565 [2025-03-04 15:30:37,198 INFO L175 Difference]: Start difference. First operand has 152 places, 249 transitions, 2516 flow. Second operand 45 states and 898 transitions. [2025-03-04 15:30:37,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 709 transitions, 7230 flow [2025-03-04 15:30:38,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 709 transitions, 6754 flow, removed 150 selfloop flow, removed 17 redundant places. [2025-03-04 15:30:38,036 INFO L231 Difference]: Finished difference. Result has 198 places, 349 transitions, 4539 flow [2025-03-04 15:30:38,036 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1745, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=4539, PETRI_PLACES=198, PETRI_TRANSITIONS=349} [2025-03-04 15:30:38,037 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 151 predicate places. [2025-03-04 15:30:38,037 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 349 transitions, 4539 flow [2025-03-04 15:30:38,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 12.071428571428571) internal successors, (338), 28 states have internal predecessors, (338), 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) [2025-03-04 15:30:38,037 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:38,037 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:30:38,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-04 15:30:38,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-04 15:30:38,241 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-04 15:30:38,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:38,241 INFO L85 PathProgramCache]: Analyzing trace with hash 811869113, now seen corresponding path program 2 times [2025-03-04 15:30:38,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:38,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752479275] [2025-03-04 15:30:38,242 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:30:38,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:38,246 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-03-04 15:30:38,264 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-03-04 15:30:38,267 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:30:38,267 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:38,771 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:38,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:38,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752479275] [2025-03-04 15:30:38,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752479275] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:30:38,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255636819] [2025-03-04 15:30:38,772 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:30:38,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:38,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:30:38,774 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:30:38,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-04 15:30:38,818 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-03-04 15:30:38,834 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-03-04 15:30:38,834 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:30:38,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:38,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-03-04 15:30:38,839 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:30:38,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-03-04 15:30:39,166 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:39,166 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:30:39,512 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 80 treesize of output 72 [2025-03-04 15:30:39,527 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 15:30:39,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 146 treesize of output 143 [2025-03-04 15:30:39,903 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:39,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255636819] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:30:39,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:30:39,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2025-03-04 15:30:39,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022393635] [2025-03-04 15:30:39,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:30:39,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-03-04 15:30:39,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:39,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-03-04 15:30:39,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1019, Unknown=0, NotChecked=0, Total=1190 [2025-03-04 15:30:39,967 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2025-03-04 15:30:39,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 349 transitions, 4539 flow. Second operand has 35 states, 35 states have (on average 11.714285714285714) internal successors, (410), 35 states have internal predecessors, (410), 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) [2025-03-04 15:30:39,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:39,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2025-03-04 15:30:39,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:50,117 INFO L124 PetriNetUnfolderBase]: 30451/52626 cut-off events. [2025-03-04 15:30:50,117 INFO L125 PetriNetUnfolderBase]: For 1318598/1318598 co-relation queries the response was YES. [2025-03-04 15:30:50,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263191 conditions, 52626 events. 30451/52626 cut-off events. For 1318598/1318598 co-relation queries the response was YES. Maximal size of possible extension queue 1059. Compared 430665 event pairs, 3102 based on Foata normal form. 4120/56615 useless extension candidates. Maximal degree in co-relation 263126. Up to 9561 conditions per place. [2025-03-04 15:30:50,682 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 486 selfloop transitions, 438 changer transitions 19/952 dead transitions. [2025-03-04 15:30:50,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 952 transitions, 12158 flow [2025-03-04 15:30:50,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2025-03-04 15:30:50,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2025-03-04 15:30:50,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 1077 transitions. [2025-03-04 15:30:50,684 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41663442940038686 [2025-03-04 15:30:50,684 INFO L175 Difference]: Start difference. First operand has 198 places, 349 transitions, 4539 flow. Second operand 55 states and 1077 transitions. [2025-03-04 15:30:50,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 952 transitions, 12158 flow [2025-03-04 15:30:54,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 952 transitions, 10611 flow, removed 737 selfloop flow, removed 12 redundant places. [2025-03-04 15:30:54,196 INFO L231 Difference]: Finished difference. Result has 268 places, 595 transitions, 9619 flow [2025-03-04 15:30:54,196 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3106, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=9619, PETRI_PLACES=268, PETRI_TRANSITIONS=595} [2025-03-04 15:30:54,197 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 221 predicate places. [2025-03-04 15:30:54,197 INFO L471 AbstractCegarLoop]: Abstraction has has 268 places, 595 transitions, 9619 flow [2025-03-04 15:30:54,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 11.714285714285714) internal successors, (410), 35 states have internal predecessors, (410), 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) [2025-03-04 15:30:54,197 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:54,197 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:30:54,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-04 15:30:54,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:54,398 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-04 15:30:54,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:54,399 INFO L85 PathProgramCache]: Analyzing trace with hash -2119871935, now seen corresponding path program 3 times [2025-03-04 15:30:54,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:54,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252347062] [2025-03-04 15:30:54,399 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 15:30:54,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:54,405 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 4 equivalence classes. [2025-03-04 15:30:54,412 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 25 of 31 statements. [2025-03-04 15:30:54,413 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-04 15:30:54,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:54,531 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-04 15:30:54,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:54,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252347062] [2025-03-04 15:30:54,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252347062] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:30:54,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559945568] [2025-03-04 15:30:54,531 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 15:30:54,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:54,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:30:54,534 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:30:54,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-04 15:30:54,581 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 4 equivalence classes. [2025-03-04 15:30:54,601 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 25 of 31 statements. [2025-03-04 15:30:54,601 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-04 15:30:54,601 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:54,602 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-04 15:30:54,605 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:30:54,690 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-04 15:30:54,691 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:30:54,746 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-03-04 15:30:54,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2025-03-04 15:30:54,775 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-04 15:30:54,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559945568] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:30:54,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:30:54,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-04 15:30:54,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018693215] [2025-03-04 15:30:54,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:30:54,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-04 15:30:54,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:54,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-04 15:30:54,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2025-03-04 15:30:54,777 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2025-03-04 15:30:54,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 595 transitions, 9619 flow. Second operand has 12 states, 12 states have (on average 15.416666666666666) internal successors, (185), 12 states have internal predecessors, (185), 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) [2025-03-04 15:30:54,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:54,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2025-03-04 15:30:54,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:31:05,012 INFO L124 PetriNetUnfolderBase]: 32674/56433 cut-off events. [2025-03-04 15:31:05,013 INFO L125 PetriNetUnfolderBase]: For 1437522/1437522 co-relation queries the response was YES. [2025-03-04 15:31:05,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296664 conditions, 56433 events. 32674/56433 cut-off events. For 1437522/1437522 co-relation queries the response was YES. Maximal size of possible extension queue 1091. Compared 462421 event pairs, 4612 based on Foata normal form. 672/57087 useless extension candidates. Maximal degree in co-relation 296573. Up to 30233 conditions per place. [2025-03-04 15:31:05,879 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 624 selfloop transitions, 150 changer transitions 4/787 dead transitions. [2025-03-04 15:31:05,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 787 transitions, 14017 flow [2025-03-04 15:31:05,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-04 15:31:05,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-04 15:31:05,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 359 transitions. [2025-03-04 15:31:05,880 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5092198581560283 [2025-03-04 15:31:05,880 INFO L175 Difference]: Start difference. First operand has 268 places, 595 transitions, 9619 flow. Second operand 15 states and 359 transitions. [2025-03-04 15:31:05,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 787 transitions, 14017 flow [2025-03-04 15:31:16,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 787 transitions, 10434 flow, removed 1766 selfloop flow, removed 17 redundant places. [2025-03-04 15:31:16,119 INFO L231 Difference]: Finished difference. Result has 269 places, 616 transitions, 8137 flow [2025-03-04 15:31:16,120 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7122, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=8137, PETRI_PLACES=269, PETRI_TRANSITIONS=616} [2025-03-04 15:31:16,120 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 222 predicate places. [2025-03-04 15:31:16,120 INFO L471 AbstractCegarLoop]: Abstraction has has 269 places, 616 transitions, 8137 flow [2025-03-04 15:31:16,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.416666666666666) internal successors, (185), 12 states have internal predecessors, (185), 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) [2025-03-04 15:31:16,120 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:31:16,120 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:31:16,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-04 15:31:16,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2025-03-04 15:31:16,321 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-04 15:31:16,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:31:16,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1191597920, now seen corresponding path program 3 times [2025-03-04 15:31:16,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:31:16,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075983156] [2025-03-04 15:31:16,321 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 15:31:16,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:31:16,326 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 4 equivalence classes. [2025-03-04 15:31:16,333 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 25 of 31 statements. [2025-03-04 15:31:16,334 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-04 15:31:16,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:31:16,440 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-04 15:31:16,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:31:16,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075983156] [2025-03-04 15:31:16,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075983156] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:31:16,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798527534] [2025-03-04 15:31:16,441 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 15:31:16,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:31:16,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:31:16,444 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:31:16,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-04 15:31:16,492 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 4 equivalence classes. [2025-03-04 15:31:16,524 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 25 of 31 statements. [2025-03-04 15:31:16,524 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-04 15:31:16,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:31:16,526 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-04 15:31:16,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:31:16,647 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-04 15:31:16,647 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:31:16,730 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 15:31:16,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 54 [2025-03-04 15:31:16,798 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-04 15:31:16,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798527534] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:31:16,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:31:16,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2025-03-04 15:31:16,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669660672] [2025-03-04 15:31:16,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:31:16,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-04 15:31:16,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:31:16,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-04 15:31:16,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2025-03-04 15:31:16,799 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2025-03-04 15:31:16,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 616 transitions, 8137 flow. Second operand has 14 states, 14 states have (on average 15.857142857142858) internal successors, (222), 14 states have internal predecessors, (222), 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) [2025-03-04 15:31:16,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:31:16,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2025-03-04 15:31:16,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand