./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.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 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:44:08,536 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:44:08,596 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:44:08,600 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:44:08,600 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:44:08,615 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:44:08,616 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:44:08,616 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:44:08,616 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:44:08,616 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:44:08,616 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:44:08,616 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:44:08,617 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:44:08,617 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:44:08,617 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:44:08,617 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:44:08,617 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:44:08,617 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:44:08,617 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:44:08,617 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:44:08,617 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:44:08,617 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:44:08,617 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:44:08,617 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:44:08,617 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:44:08,618 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:44:08,618 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:44:08,618 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:44:08,618 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:44:08,618 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:44:08,618 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:44:08,618 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:44:08,618 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:44:08,618 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:44:08,618 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:44:08,618 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:44:08,618 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:44:08,618 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:44:08,618 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:44:08,618 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:44:08,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:44:08,619 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:44:08,619 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:44:08,619 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:44:08,619 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:44:08,619 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 -> 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 [2025-03-17 19:44:08,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:44:08,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:44:08,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:44:08,919 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:44:08,919 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:44:08,920 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2025-03-17 19:44:10,162 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/363c2c4df/79a32dc86d66485f94ee01dfff4dbb57/FLAGfb0b38f20 [2025-03-17 19:44:10,386 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:44:10,388 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2025-03-17 19:44:10,394 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/363c2c4df/79a32dc86d66485f94ee01dfff4dbb57/FLAGfb0b38f20 [2025-03-17 19:44:10,411 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/363c2c4df/79a32dc86d66485f94ee01dfff4dbb57 [2025-03-17 19:44:10,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:44:10,417 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:44:10,418 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:44:10,419 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:44:10,421 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:44:10,422 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:44:10" (1/1) ... [2025-03-17 19:44:10,424 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65abf7d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:10, skipping insertion in model container [2025-03-17 19:44:10,424 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:44:10" (1/1) ... [2025-03-17 19:44:10,440 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:44:10,584 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:44:10,594 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:44:10,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:44:10,635 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:44:10,636 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:10 WrapperNode [2025-03-17 19:44:10,636 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:44:10,637 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:44:10,637 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:44:10,637 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:44:10,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:10" (1/1) ... [2025-03-17 19:44:10,647 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:10" (1/1) ... [2025-03-17 19:44:10,665 INFO L138 Inliner]: procedures = 24, calls = 49, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 331 [2025-03-17 19:44:10,666 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:44:10,666 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:44:10,667 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:44:10,667 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:44:10,673 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:10" (1/1) ... [2025-03-17 19:44:10,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:10" (1/1) ... [2025-03-17 19:44:10,680 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:10" (1/1) ... [2025-03-17 19:44:10,702 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2025-03-17 19:44:10,703 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:10" (1/1) ... [2025-03-17 19:44:10,703 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:10" (1/1) ... [2025-03-17 19:44:10,710 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:10" (1/1) ... [2025-03-17 19:44:10,711 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:10" (1/1) ... [2025-03-17 19:44:10,712 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:10" (1/1) ... [2025-03-17 19:44:10,713 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:10" (1/1) ... [2025-03-17 19:44:10,714 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:44:10,715 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:44:10,715 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:44:10,715 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:44:10,716 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:10" (1/1) ... [2025-03-17 19:44:10,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:44:10,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:10,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 19:44:10,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 19:44:10,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:44:10,763 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 19:44:10,763 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 19:44:10,763 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 19:44:10,763 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 19:44:10,763 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-17 19:44:10,763 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-17 19:44:10,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:44:10,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 19:44:10,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 19:44:10,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 19:44:10,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 19:44:10,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 19:44:10,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 19:44:10,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:44:10,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:44:10,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 19:44:10,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 19:44:10,764 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 19:44:10,850 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:44:10,852 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:44:11,299 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:44:11,300 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:44:11,622 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:44:11,622 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:44:11,622 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:44:11 BoogieIcfgContainer [2025-03-17 19:44:11,622 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:44:11,625 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:44:11,625 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:44:11,628 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:44:11,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:44:10" (1/3) ... [2025-03-17 19:44:11,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b9b22f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:44:11, skipping insertion in model container [2025-03-17 19:44:11,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:44:10" (2/3) ... [2025-03-17 19:44:11,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b9b22f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:44:11, skipping insertion in model container [2025-03-17 19:44:11,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:44:11" (3/3) ... [2025-03-17 19:44:11,631 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2025-03-17 19:44:11,641 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:44:11,643 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-ring-nondet.wvr.c that has 4 procedures, 81 locations, 1 initial locations, 6 loop locations, and 32 error locations. [2025-03-17 19:44:11,643 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:44:11,721 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-17 19:44:11,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 90 transitions, 201 flow [2025-03-17 19:44:11,786 INFO L124 PetriNetUnfolderBase]: 10/87 cut-off events. [2025-03-17 19:44:11,788 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-17 19:44:11,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 87 events. 10/87 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 342 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 68. Up to 3 conditions per place. [2025-03-17 19:44:11,792 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 90 transitions, 201 flow [2025-03-17 19:44:11,795 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 85 transitions, 185 flow [2025-03-17 19:44:11,806 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:44:11,815 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;@7be4d2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:44:11,815 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2025-03-17 19:44:11,818 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:44:11,818 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-17 19:44:11,818 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:44:11,818 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:11,819 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 19:44:11,819 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-03-17 19:44:11,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:11,823 INFO L85 PathProgramCache]: Analyzing trace with hash 909630, now seen corresponding path program 1 times [2025-03-17 19:44:11,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:11,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495466019] [2025-03-17 19:44:11,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:11,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:11,884 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:44:11,904 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:44:11,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:11,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:12,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:12,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:12,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495466019] [2025-03-17 19:44:12,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495466019] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:12,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:44:12,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:44:12,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387199807] [2025-03-17 19:44:12,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:12,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:44:12,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:12,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:44:12,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:44:12,075 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 90 [2025-03-17 19:44:12,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 85 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:12,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:12,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 90 [2025-03-17 19:44:12,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:13,438 INFO L124 PetriNetUnfolderBase]: 9137/14557 cut-off events. [2025-03-17 19:44:13,438 INFO L125 PetriNetUnfolderBase]: For 451/451 co-relation queries the response was YES. [2025-03-17 19:44:13,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27647 conditions, 14557 events. 9137/14557 cut-off events. For 451/451 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 104584 event pairs, 8468 based on Foata normal form. 3/8765 useless extension candidates. Maximal degree in co-relation 26874. Up to 12592 conditions per place. [2025-03-17 19:44:13,570 INFO L140 encePairwiseOnDemand]: 66/90 looper letters, 58 selfloop transitions, 10 changer transitions 0/86 dead transitions. [2025-03-17 19:44:13,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 86 transitions, 323 flow [2025-03-17 19:44:13,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:44:13,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:44:13,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 166 transitions. [2025-03-17 19:44:13,582 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2025-03-17 19:44:13,583 INFO L175 Difference]: Start difference. First operand has 85 places, 85 transitions, 185 flow. Second operand 4 states and 166 transitions. [2025-03-17 19:44:13,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 86 transitions, 323 flow [2025-03-17 19:44:13,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 86 transitions, 314 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-17 19:44:13,596 INFO L231 Difference]: Finished difference. Result has 80 places, 86 transitions, 248 flow [2025-03-17 19:44:13,598 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=248, PETRI_PLACES=80, PETRI_TRANSITIONS=86} [2025-03-17 19:44:13,600 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, -5 predicate places. [2025-03-17 19:44:13,600 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 86 transitions, 248 flow [2025-03-17 19:44:13,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:13,600 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:13,600 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-17 19:44:13,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:44:13,601 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-03-17 19:44:13,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:13,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1329797084, now seen corresponding path program 1 times [2025-03-17 19:44:13,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:13,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088200416] [2025-03-17 19:44:13,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:13,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:13,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:44:13,621 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:44:13,625 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:13,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:13,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:13,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:13,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088200416] [2025-03-17 19:44:13,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088200416] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:13,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311108848] [2025-03-17 19:44:13,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:13,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:13,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:13,724 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:13,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 19:44:13,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:44:13,804 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:44:13,804 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:13,804 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:13,806 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:44:13,809 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:13,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:13,844 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:44:13,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311108848] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:13,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:44:13,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-17 19:44:13,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408609820] [2025-03-17 19:44:13,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:13,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:44:13,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:13,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:44:13,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:44:13,862 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 90 [2025-03-17 19:44:13,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 86 transitions, 248 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:13,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:13,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 90 [2025-03-17 19:44:13,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:15,020 INFO L124 PetriNetUnfolderBase]: 9137/14554 cut-off events. [2025-03-17 19:44:15,020 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2025-03-17 19:44:15,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27545 conditions, 14554 events. 9137/14554 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 104585 event pairs, 8468 based on Foata normal form. 3/8767 useless extension candidates. Maximal degree in co-relation 27472. Up to 12577 conditions per place. [2025-03-17 19:44:15,085 INFO L140 encePairwiseOnDemand]: 77/90 looper letters, 48 selfloop transitions, 17 changer transitions 0/83 dead transitions. [2025-03-17 19:44:15,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 83 transitions, 366 flow [2025-03-17 19:44:15,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:44:15,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:44:15,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2025-03-17 19:44:15,087 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2025-03-17 19:44:15,088 INFO L175 Difference]: Start difference. First operand has 80 places, 86 transitions, 248 flow. Second operand 6 states and 194 transitions. [2025-03-17 19:44:15,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 83 transitions, 366 flow [2025-03-17 19:44:15,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 83 transitions, 366 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:44:15,091 INFO L231 Difference]: Finished difference. Result has 82 places, 83 transitions, 270 flow [2025-03-17 19:44:15,092 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=270, PETRI_PLACES=82, PETRI_TRANSITIONS=83} [2025-03-17 19:44:15,092 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, -3 predicate places. [2025-03-17 19:44:15,092 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 83 transitions, 270 flow [2025-03-17 19:44:15,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:15,093 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:15,093 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-17 19:44:15,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 19:44:15,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:15,294 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-03-17 19:44:15,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:15,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1725962540, now seen corresponding path program 1 times [2025-03-17 19:44:15,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:15,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777499349] [2025-03-17 19:44:15,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:15,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:15,304 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:44:15,311 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:44:15,311 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:15,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:15,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:15,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:15,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777499349] [2025-03-17 19:44:15,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777499349] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:15,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593885462] [2025-03-17 19:44:15,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:15,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:15,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:15,402 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:15,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 19:44:15,468 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:44:15,483 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:44:15,483 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:15,483 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:15,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:44:15,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:15,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:15,510 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:15,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:15,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593885462] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:15,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:15,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-17 19:44:15,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071377468] [2025-03-17 19:44:15,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:15,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 19:44:15,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:15,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 19:44:15,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:44:15,578 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 90 [2025-03-17 19:44:15,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 83 transitions, 270 flow. Second operand has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:15,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:15,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 90 [2025-03-17 19:44:15,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:16,618 INFO L124 PetriNetUnfolderBase]: 9146/14590 cut-off events. [2025-03-17 19:44:16,620 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2025-03-17 19:44:16,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27686 conditions, 14590 events. 9146/14590 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 105028 event pairs, 8468 based on Foata normal form. 9/8809 useless extension candidates. Maximal degree in co-relation 27474. Up to 12592 conditions per place. [2025-03-17 19:44:16,681 INFO L140 encePairwiseOnDemand]: 77/90 looper letters, 55 selfloop transitions, 37 changer transitions 0/110 dead transitions. [2025-03-17 19:44:16,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 110 transitions, 628 flow [2025-03-17 19:44:16,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:44:16,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:44:16,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 311 transitions. [2025-03-17 19:44:16,686 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34555555555555556 [2025-03-17 19:44:16,686 INFO L175 Difference]: Start difference. First operand has 82 places, 83 transitions, 270 flow. Second operand 10 states and 311 transitions. [2025-03-17 19:44:16,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 110 transitions, 628 flow [2025-03-17 19:44:16,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 110 transitions, 545 flow, removed 16 selfloop flow, removed 5 redundant places. [2025-03-17 19:44:16,691 INFO L231 Difference]: Finished difference. Result has 89 places, 110 transitions, 485 flow [2025-03-17 19:44:16,691 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=485, PETRI_PLACES=89, PETRI_TRANSITIONS=110} [2025-03-17 19:44:16,691 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 4 predicate places. [2025-03-17 19:44:16,692 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 110 transitions, 485 flow [2025-03-17 19:44:16,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:16,693 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:16,693 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:16,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 19:44:16,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-17 19:44:16,898 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-03-17 19:44:16,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:16,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1388221787, now seen corresponding path program 1 times [2025-03-17 19:44:16,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:16,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264901761] [2025-03-17 19:44:16,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:16,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:16,908 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:44:16,923 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:44:16,926 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:16,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:17,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:17,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:17,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264901761] [2025-03-17 19:44:17,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264901761] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:17,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:44:17,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:44:17,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744560700] [2025-03-17 19:44:17,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:17,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:44:17,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:17,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:44:17,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:44:17,070 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 90 [2025-03-17 19:44:17,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 110 transitions, 485 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:17,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:17,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 90 [2025-03-17 19:44:17,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:18,070 INFO L124 PetriNetUnfolderBase]: 9286/14888 cut-off events. [2025-03-17 19:44:18,070 INFO L125 PetriNetUnfolderBase]: For 281/281 co-relation queries the response was YES. [2025-03-17 19:44:18,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28341 conditions, 14888 events. 9286/14888 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 870. Compared 107068 event pairs, 8591 based on Foata normal form. 135/9195 useless extension candidates. Maximal degree in co-relation 28183. Up to 12618 conditions per place. [2025-03-17 19:44:18,157 INFO L140 encePairwiseOnDemand]: 78/90 looper letters, 125 selfloop transitions, 10 changer transitions 1/157 dead transitions. [2025-03-17 19:44:18,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 157 transitions, 1007 flow [2025-03-17 19:44:18,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:44:18,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:44:18,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 225 transitions. [2025-03-17 19:44:18,159 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-03-17 19:44:18,159 INFO L175 Difference]: Start difference. First operand has 89 places, 110 transitions, 485 flow. Second operand 5 states and 225 transitions. [2025-03-17 19:44:18,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 157 transitions, 1007 flow [2025-03-17 19:44:18,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 157 transitions, 947 flow, removed 15 selfloop flow, removed 2 redundant places. [2025-03-17 19:44:18,163 INFO L231 Difference]: Finished difference. Result has 93 places, 117 transitions, 550 flow [2025-03-17 19:44:18,164 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=550, PETRI_PLACES=93, PETRI_TRANSITIONS=117} [2025-03-17 19:44:18,165 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 8 predicate places. [2025-03-17 19:44:18,165 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 117 transitions, 550 flow [2025-03-17 19:44:18,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:18,165 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:18,165 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:18,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:44:18,165 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-03-17 19:44:18,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:18,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1106800557, now seen corresponding path program 1 times [2025-03-17 19:44:18,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:18,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657891642] [2025-03-17 19:44:18,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:18,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:18,178 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:44:18,188 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:44:18,191 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:18,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:18,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:18,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:18,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657891642] [2025-03-17 19:44:18,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657891642] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:18,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:44:18,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:44:18,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975085105] [2025-03-17 19:44:18,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:18,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:44:18,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:18,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:44:18,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:44:18,254 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 90 [2025-03-17 19:44:18,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 117 transitions, 550 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:18,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:18,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 90 [2025-03-17 19:44:18,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:19,031 INFO L124 PetriNetUnfolderBase]: 9001/14205 cut-off events. [2025-03-17 19:44:19,031 INFO L125 PetriNetUnfolderBase]: For 1123/1123 co-relation queries the response was YES. [2025-03-17 19:44:19,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29285 conditions, 14205 events. 9001/14205 cut-off events. For 1123/1123 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 99151 event pairs, 3331 based on Foata normal form. 253/8604 useless extension candidates. Maximal degree in co-relation 29129. Up to 10420 conditions per place. [2025-03-17 19:44:19,093 INFO L140 encePairwiseOnDemand]: 86/90 looper letters, 121 selfloop transitions, 2 changer transitions 1/145 dead transitions. [2025-03-17 19:44:19,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 145 transitions, 867 flow [2025-03-17 19:44:19,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:44:19,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:44:19,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 164 transitions. [2025-03-17 19:44:19,095 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6074074074074074 [2025-03-17 19:44:19,095 INFO L175 Difference]: Start difference. First operand has 93 places, 117 transitions, 550 flow. Second operand 3 states and 164 transitions. [2025-03-17 19:44:19,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 145 transitions, 867 flow [2025-03-17 19:44:19,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 145 transitions, 863 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-17 19:44:19,099 INFO L231 Difference]: Finished difference. Result has 95 places, 117 transitions, 551 flow [2025-03-17 19:44:19,099 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=551, PETRI_PLACES=95, PETRI_TRANSITIONS=117} [2025-03-17 19:44:19,099 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 10 predicate places. [2025-03-17 19:44:19,099 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 117 transitions, 551 flow [2025-03-17 19:44:19,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:19,100 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:19,100 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:19,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:44:19,100 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-03-17 19:44:19,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:19,100 INFO L85 PathProgramCache]: Analyzing trace with hash -897866041, now seen corresponding path program 1 times [2025-03-17 19:44:19,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:19,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780526614] [2025-03-17 19:44:19,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:19,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:19,109 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:44:19,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:44:19,122 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:19,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:19,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:19,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:19,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780526614] [2025-03-17 19:44:19,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780526614] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:19,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863475472] [2025-03-17 19:44:19,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:19,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:19,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:19,287 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:19,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 19:44:19,343 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:44:19,367 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:44:19,368 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:19,368 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:19,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 19:44:19,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:19,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:44:19,390 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:44:19,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863475472] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:19,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:44:19,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2025-03-17 19:44:19,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038127040] [2025-03-17 19:44:19,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:19,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:44:19,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:19,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:44:19,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 19:44:19,392 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 90 [2025-03-17 19:44:19,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 117 transitions, 551 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:19,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:19,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 90 [2025-03-17 19:44:19,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:20,045 INFO L124 PetriNetUnfolderBase]: 7533/11904 cut-off events. [2025-03-17 19:44:20,045 INFO L125 PetriNetUnfolderBase]: For 1467/1467 co-relation queries the response was YES. [2025-03-17 19:44:20,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24887 conditions, 11904 events. 7533/11904 cut-off events. For 1467/1467 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 79962 event pairs, 6642 based on Foata normal form. 0/7870 useless extension candidates. Maximal degree in co-relation 24730. Up to 10463 conditions per place. [2025-03-17 19:44:20,111 INFO L140 encePairwiseOnDemand]: 87/90 looper letters, 93 selfloop transitions, 1 changer transitions 0/115 dead transitions. [2025-03-17 19:44:20,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 115 transitions, 731 flow [2025-03-17 19:44:20,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:44:20,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:44:20,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2025-03-17 19:44:20,113 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4962962962962963 [2025-03-17 19:44:20,113 INFO L175 Difference]: Start difference. First operand has 95 places, 117 transitions, 551 flow. Second operand 3 states and 134 transitions. [2025-03-17 19:44:20,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 115 transitions, 731 flow [2025-03-17 19:44:20,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 115 transitions, 729 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:44:20,116 INFO L231 Difference]: Finished difference. Result has 94 places, 115 transitions, 543 flow [2025-03-17 19:44:20,117 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=543, PETRI_PLACES=94, PETRI_TRANSITIONS=115} [2025-03-17 19:44:20,117 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 9 predicate places. [2025-03-17 19:44:20,117 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 115 transitions, 543 flow [2025-03-17 19:44:20,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:20,118 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:20,118 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:20,130 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 19:44:20,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:20,319 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-03-17 19:44:20,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:20,319 INFO L85 PathProgramCache]: Analyzing trace with hash 412368643, now seen corresponding path program 1 times [2025-03-17 19:44:20,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:20,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629788787] [2025-03-17 19:44:20,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:20,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:20,327 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:44:20,334 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:44:20,334 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:20,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:20,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:44:20,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:20,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629788787] [2025-03-17 19:44:20,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629788787] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:20,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:44:20,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:44:20,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847280557] [2025-03-17 19:44:20,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:20,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:44:20,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:20,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:44:20,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:44:20,387 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 90 [2025-03-17 19:44:20,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 115 transitions, 543 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:20,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:20,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 90 [2025-03-17 19:44:20,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:20,960 INFO L124 PetriNetUnfolderBase]: 7113/11359 cut-off events. [2025-03-17 19:44:20,960 INFO L125 PetriNetUnfolderBase]: For 1564/1588 co-relation queries the response was YES. [2025-03-17 19:44:20,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23488 conditions, 11359 events. 7113/11359 cut-off events. For 1564/1588 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 73376 event pairs, 3508 based on Foata normal form. 72/7562 useless extension candidates. Maximal degree in co-relation 23470. Up to 9321 conditions per place. [2025-03-17 19:44:21,002 INFO L140 encePairwiseOnDemand]: 84/90 looper letters, 110 selfloop transitions, 5 changer transitions 0/136 dead transitions. [2025-03-17 19:44:21,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 136 transitions, 822 flow [2025-03-17 19:44:21,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:44:21,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:44:21,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2025-03-17 19:44:21,004 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5703703703703704 [2025-03-17 19:44:21,004 INFO L175 Difference]: Start difference. First operand has 94 places, 115 transitions, 543 flow. Second operand 3 states and 154 transitions. [2025-03-17 19:44:21,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 136 transitions, 822 flow [2025-03-17 19:44:21,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 136 transitions, 821 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:44:21,007 INFO L231 Difference]: Finished difference. Result has 96 places, 119 transitions, 577 flow [2025-03-17 19:44:21,007 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=577, PETRI_PLACES=96, PETRI_TRANSITIONS=119} [2025-03-17 19:44:21,007 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 11 predicate places. [2025-03-17 19:44:21,007 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 119 transitions, 577 flow [2025-03-17 19:44:21,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:21,007 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:21,007 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:21,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 19:44:21,008 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-03-17 19:44:21,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:21,008 INFO L85 PathProgramCache]: Analyzing trace with hash 730986768, now seen corresponding path program 1 times [2025-03-17 19:44:21,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:21,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83286279] [2025-03-17 19:44:21,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:21,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:21,015 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 19:44:21,021 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 19:44:21,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:21,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:21,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:44:21,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:21,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83286279] [2025-03-17 19:44:21,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83286279] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:21,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:44:21,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:44:21,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216791434] [2025-03-17 19:44:21,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:21,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:44:21,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:21,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:44:21,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:44:21,063 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 90 [2025-03-17 19:44:21,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 119 transitions, 577 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:21,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:21,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 90 [2025-03-17 19:44:21,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:21,623 INFO L124 PetriNetUnfolderBase]: 6584/10696 cut-off events. [2025-03-17 19:44:21,623 INFO L125 PetriNetUnfolderBase]: For 2649/2685 co-relation queries the response was YES. [2025-03-17 19:44:21,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23367 conditions, 10696 events. 6584/10696 cut-off events. For 2649/2685 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 70274 event pairs, 3038 based on Foata normal form. 0/7366 useless extension candidates. Maximal degree in co-relation 23347. Up to 9070 conditions per place. [2025-03-17 19:44:21,666 INFO L140 encePairwiseOnDemand]: 85/90 looper letters, 98 selfloop transitions, 8 changer transitions 0/127 dead transitions. [2025-03-17 19:44:21,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 127 transitions, 815 flow [2025-03-17 19:44:21,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:44:21,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:44:21,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 141 transitions. [2025-03-17 19:44:21,667 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2025-03-17 19:44:21,667 INFO L175 Difference]: Start difference. First operand has 96 places, 119 transitions, 577 flow. Second operand 3 states and 141 transitions. [2025-03-17 19:44:21,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 127 transitions, 815 flow [2025-03-17 19:44:21,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 127 transitions, 809 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:44:21,671 INFO L231 Difference]: Finished difference. Result has 97 places, 120 transitions, 608 flow [2025-03-17 19:44:21,671 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=608, PETRI_PLACES=97, PETRI_TRANSITIONS=120} [2025-03-17 19:44:21,671 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 12 predicate places. [2025-03-17 19:44:21,671 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 120 transitions, 608 flow [2025-03-17 19:44:21,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:21,672 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:21,672 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:21,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 19:44:21,672 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-03-17 19:44:21,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:21,672 INFO L85 PathProgramCache]: Analyzing trace with hash 730986769, now seen corresponding path program 1 times [2025-03-17 19:44:21,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:21,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530663542] [2025-03-17 19:44:21,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:21,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:21,680 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 19:44:21,686 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 19:44:21,686 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:21,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:21,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:21,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:21,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530663542] [2025-03-17 19:44:21,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530663542] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:21,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051212678] [2025-03-17 19:44:21,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:21,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:21,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:21,804 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:21,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 19:44:21,868 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 19:44:21,886 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 19:44:21,886 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:21,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:21,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:44:21,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:21,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:44:21,933 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:44:21,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051212678] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:21,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:44:21,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2025-03-17 19:44:21,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837559484] [2025-03-17 19:44:21,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:21,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:44:21,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:21,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:44:21,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 19:44:21,936 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 90 [2025-03-17 19:44:21,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 120 transitions, 608 flow. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:21,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:21,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 90 [2025-03-17 19:44:21,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:22,726 INFO L124 PetriNetUnfolderBase]: 6384/10510 cut-off events. [2025-03-17 19:44:22,726 INFO L125 PetriNetUnfolderBase]: For 4157/4157 co-relation queries the response was YES. [2025-03-17 19:44:22,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23742 conditions, 10510 events. 6384/10510 cut-off events. For 4157/4157 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 70079 event pairs, 1572 based on Foata normal form. 206/7652 useless extension candidates. Maximal degree in co-relation 23720. Up to 5126 conditions per place. [2025-03-17 19:44:22,775 INFO L140 encePairwiseOnDemand]: 82/90 looper letters, 107 selfloop transitions, 16 changer transitions 0/144 dead transitions. [2025-03-17 19:44:22,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 144 transitions, 925 flow [2025-03-17 19:44:22,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:44:22,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:44:22,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 182 transitions. [2025-03-17 19:44:22,777 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5055555555555555 [2025-03-17 19:44:22,777 INFO L175 Difference]: Start difference. First operand has 97 places, 120 transitions, 608 flow. Second operand 4 states and 182 transitions. [2025-03-17 19:44:22,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 144 transitions, 925 flow [2025-03-17 19:44:22,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 144 transitions, 917 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:44:22,782 INFO L231 Difference]: Finished difference. Result has 100 places, 121 transitions, 677 flow [2025-03-17 19:44:22,782 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=677, PETRI_PLACES=100, PETRI_TRANSITIONS=121} [2025-03-17 19:44:22,783 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 15 predicate places. [2025-03-17 19:44:22,783 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 121 transitions, 677 flow [2025-03-17 19:44:22,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:22,783 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:22,783 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:22,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 19:44:22,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:22,987 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-03-17 19:44:22,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:22,987 INFO L85 PathProgramCache]: Analyzing trace with hash 730986770, now seen corresponding path program 1 times [2025-03-17 19:44:22,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:22,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323781388] [2025-03-17 19:44:22,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:22,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:22,994 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 19:44:22,998 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 19:44:22,998 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:22,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:23,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:44:23,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:23,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323781388] [2025-03-17 19:44:23,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323781388] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:23,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:44:23,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:44:23,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871031350] [2025-03-17 19:44:23,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:23,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:44:23,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:23,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:44:23,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:44:23,035 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 90 [2025-03-17 19:44:23,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 121 transitions, 677 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:23,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:23,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 90 [2025-03-17 19:44:23,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:23,766 INFO L124 PetriNetUnfolderBase]: 7937/12781 cut-off events. [2025-03-17 19:44:23,767 INFO L125 PetriNetUnfolderBase]: For 12441/12525 co-relation queries the response was YES. [2025-03-17 19:44:23,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32138 conditions, 12781 events. 7937/12781 cut-off events. For 12441/12525 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 86744 event pairs, 5872 based on Foata normal form. 0/9089 useless extension candidates. Maximal degree in co-relation 32113. Up to 9288 conditions per place. [2025-03-17 19:44:23,821 INFO L140 encePairwiseOnDemand]: 86/90 looper letters, 130 selfloop transitions, 2 changer transitions 0/153 dead transitions. [2025-03-17 19:44:23,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 153 transitions, 1016 flow [2025-03-17 19:44:23,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:44:23,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:44:23,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 167 transitions. [2025-03-17 19:44:23,823 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6185185185185185 [2025-03-17 19:44:23,823 INFO L175 Difference]: Start difference. First operand has 100 places, 121 transitions, 677 flow. Second operand 3 states and 167 transitions. [2025-03-17 19:44:23,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 153 transitions, 1016 flow [2025-03-17 19:44:23,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 153 transitions, 1015 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:44:23,834 INFO L231 Difference]: Finished difference. Result has 101 places, 119 transitions, 664 flow [2025-03-17 19:44:23,834 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=664, PETRI_PLACES=101, PETRI_TRANSITIONS=119} [2025-03-17 19:44:23,838 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 16 predicate places. [2025-03-17 19:44:23,838 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 119 transitions, 664 flow [2025-03-17 19:44:23,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:23,838 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:23,838 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:23,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 19:44:23,838 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-03-17 19:44:23,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:23,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1185755374, now seen corresponding path program 1 times [2025-03-17 19:44:23,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:23,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883512551] [2025-03-17 19:44:23,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:23,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:23,847 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 19:44:23,853 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 19:44:23,854 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:23,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:23,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:44:23,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:23,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883512551] [2025-03-17 19:44:23,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883512551] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:23,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:44:23,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:44:23,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258402214] [2025-03-17 19:44:23,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:23,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:44:23,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:23,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:44:23,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:44:23,912 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 90 [2025-03-17 19:44:23,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 119 transitions, 664 flow. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:23,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:23,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 90 [2025-03-17 19:44:23,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:24,918 INFO L124 PetriNetUnfolderBase]: 10855/17354 cut-off events. [2025-03-17 19:44:24,918 INFO L125 PetriNetUnfolderBase]: For 17784/18012 co-relation queries the response was YES. [2025-03-17 19:44:24,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45028 conditions, 17354 events. 10855/17354 cut-off events. For 17784/18012 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 119770 event pairs, 8801 based on Foata normal form. 290/12868 useless extension candidates. Maximal degree in co-relation 45003. Up to 10957 conditions per place. [2025-03-17 19:44:24,993 INFO L140 encePairwiseOnDemand]: 79/90 looper letters, 122 selfloop transitions, 12 changer transitions 0/155 dead transitions. [2025-03-17 19:44:24,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 155 transitions, 1102 flow [2025-03-17 19:44:24,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:44:24,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:44:24,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 197 transitions. [2025-03-17 19:44:24,994 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5472222222222223 [2025-03-17 19:44:24,994 INFO L175 Difference]: Start difference. First operand has 101 places, 119 transitions, 664 flow. Second operand 4 states and 197 transitions. [2025-03-17 19:44:24,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 155 transitions, 1102 flow [2025-03-17 19:44:24,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 155 transitions, 1098 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:44:25,000 INFO L231 Difference]: Finished difference. Result has 104 places, 119 transitions, 703 flow [2025-03-17 19:44:25,000 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=703, PETRI_PLACES=104, PETRI_TRANSITIONS=119} [2025-03-17 19:44:25,001 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 19 predicate places. [2025-03-17 19:44:25,001 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 119 transitions, 703 flow [2025-03-17 19:44:25,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:25,001 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:25,001 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-03-17 19:44:25,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 19:44:25,001 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-03-17 19:44:25,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:25,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1293393102, now seen corresponding path program 2 times [2025-03-17 19:44:25,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:25,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150047741] [2025-03-17 19:44:25,002 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:44:25,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:25,008 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-17 19:44:25,011 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-17 19:44:25,011 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:44:25,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:25,035 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 19:44:25,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:25,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150047741] [2025-03-17 19:44:25,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150047741] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:25,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866005931] [2025-03-17 19:44:25,036 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:44:25,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:25,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:25,039 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:25,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 19:44:25,092 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-17 19:44:25,099 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-17 19:44:25,100 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:44:25,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:25,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 19:44:25,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:25,123 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 19:44:25,123 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:25,142 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 19:44:25,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866005931] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:25,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:25,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-03-17 19:44:25,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33909432] [2025-03-17 19:44:25,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:25,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:44:25,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:25,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:44:25,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:44:25,158 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 90 [2025-03-17 19:44:25,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 119 transitions, 703 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:25,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:25,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 90 [2025-03-17 19:44:25,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:26,276 INFO L124 PetriNetUnfolderBase]: 10882/17448 cut-off events. [2025-03-17 19:44:26,276 INFO L125 PetriNetUnfolderBase]: For 18339/18579 co-relation queries the response was YES. [2025-03-17 19:44:26,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46966 conditions, 17448 events. 10882/17448 cut-off events. For 18339/18579 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 121451 event pairs, 8817 based on Foata normal form. 1/12664 useless extension candidates. Maximal degree in co-relation 46940. Up to 15280 conditions per place. [2025-03-17 19:44:26,358 INFO L140 encePairwiseOnDemand]: 85/90 looper letters, 84 selfloop transitions, 16 changer transitions 0/118 dead transitions. [2025-03-17 19:44:26,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 118 transitions, 893 flow [2025-03-17 19:44:26,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:44:26,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:44:26,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2025-03-17 19:44:26,359 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2025-03-17 19:44:26,359 INFO L175 Difference]: Start difference. First operand has 104 places, 119 transitions, 703 flow. Second operand 4 states and 136 transitions. [2025-03-17 19:44:26,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 118 transitions, 893 flow [2025-03-17 19:44:26,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 118 transitions, 882 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:44:26,369 INFO L231 Difference]: Finished difference. Result has 105 places, 118 transitions, 714 flow [2025-03-17 19:44:26,369 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=714, PETRI_PLACES=105, PETRI_TRANSITIONS=118} [2025-03-17 19:44:26,370 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 20 predicate places. [2025-03-17 19:44:26,370 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 118 transitions, 714 flow [2025-03-17 19:44:26,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:26,370 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:26,370 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:26,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-17 19:44:26,570 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,SelfDestructingSolverStorable11 [2025-03-17 19:44:26,571 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-03-17 19:44:26,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:26,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1448056295, now seen corresponding path program 1 times [2025-03-17 19:44:26,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:26,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541127614] [2025-03-17 19:44:26,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:26,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:26,578 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 19:44:26,585 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 19:44:26,585 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:26,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:26,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:44:26,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:26,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541127614] [2025-03-17 19:44:26,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541127614] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:26,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:44:26,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:44:26,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726377688] [2025-03-17 19:44:26,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:26,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:44:26,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:26,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:44:26,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:44:26,682 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 90 [2025-03-17 19:44:26,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 118 transitions, 714 flow. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:26,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:26,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 90 [2025-03-17 19:44:26,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:28,110 INFO L124 PetriNetUnfolderBase]: 12242/19885 cut-off events. [2025-03-17 19:44:28,110 INFO L125 PetriNetUnfolderBase]: For 21805/22165 co-relation queries the response was YES. [2025-03-17 19:44:28,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53989 conditions, 19885 events. 12242/19885 cut-off events. For 21805/22165 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 139592 event pairs, 9944 based on Foata normal form. 328/15096 useless extension candidates. Maximal degree in co-relation 53962. Up to 15278 conditions per place. [2025-03-17 19:44:28,239 INFO L140 encePairwiseOnDemand]: 81/90 looper letters, 127 selfloop transitions, 11 changer transitions 6/164 dead transitions. [2025-03-17 19:44:28,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 164 transitions, 1300 flow [2025-03-17 19:44:28,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:44:28,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:44:28,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 221 transitions. [2025-03-17 19:44:28,241 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4911111111111111 [2025-03-17 19:44:28,241 INFO L175 Difference]: Start difference. First operand has 105 places, 118 transitions, 714 flow. Second operand 5 states and 221 transitions. [2025-03-17 19:44:28,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 164 transitions, 1300 flow [2025-03-17 19:44:28,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 164 transitions, 1268 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:44:28,254 INFO L231 Difference]: Finished difference. Result has 108 places, 121 transitions, 763 flow [2025-03-17 19:44:28,254 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=763, PETRI_PLACES=108, PETRI_TRANSITIONS=121} [2025-03-17 19:44:28,254 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 23 predicate places. [2025-03-17 19:44:28,254 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 121 transitions, 763 flow [2025-03-17 19:44:28,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:28,254 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:28,255 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2025-03-17 19:44:28,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 19:44:28,255 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-03-17 19:44:28,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:28,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1220886073, now seen corresponding path program 1 times [2025-03-17 19:44:28,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:28,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752946461] [2025-03-17 19:44:28,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:28,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:28,263 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:44:28,270 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:44:28,271 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:28,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:28,382 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:28,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:28,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752946461] [2025-03-17 19:44:28,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752946461] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:28,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182426126] [2025-03-17 19:44:28,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:28,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:28,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:28,385 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:44:28,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 19:44:28,444 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:44:28,460 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:44:28,461 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:28,461 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:28,462 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-17 19:44:28,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:28,506 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:28,506 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:28,639 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:28,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182426126] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:28,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:28,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-03-17 19:44:28,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969830612] [2025-03-17 19:44:28,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:28,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-17 19:44:28,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:28,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-17 19:44:28,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-03-17 19:44:28,690 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 90 [2025-03-17 19:44:28,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 121 transitions, 763 flow. Second operand has 24 states, 24 states have (on average 22.083333333333332) internal successors, (530), 24 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:28,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:28,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 90 [2025-03-17 19:44:28,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:30,396 INFO L124 PetriNetUnfolderBase]: 12284/20003 cut-off events. [2025-03-17 19:44:30,396 INFO L125 PetriNetUnfolderBase]: For 23093/23549 co-relation queries the response was YES. [2025-03-17 19:44:30,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56681 conditions, 20003 events. 12284/20003 cut-off events. For 23093/23549 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 141452 event pairs, 9944 based on Foata normal form. 36/14819 useless extension candidates. Maximal degree in co-relation 56653. Up to 17414 conditions per place. [2025-03-17 19:44:30,501 INFO L140 encePairwiseOnDemand]: 78/90 looper letters, 57 selfloop transitions, 106 changer transitions 0/181 dead transitions. [2025-03-17 19:44:30,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 181 transitions, 1575 flow [2025-03-17 19:44:30,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-17 19:44:30,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-03-17 19:44:30,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 615 transitions. [2025-03-17 19:44:30,503 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3106060606060606 [2025-03-17 19:44:30,503 INFO L175 Difference]: Start difference. First operand has 108 places, 121 transitions, 763 flow. Second operand 22 states and 615 transitions. [2025-03-17 19:44:30,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 181 transitions, 1575 flow [2025-03-17 19:44:30,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 181 transitions, 1520 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-17 19:44:30,515 INFO L231 Difference]: Finished difference. Result has 133 places, 181 transitions, 1480 flow [2025-03-17 19:44:30,515 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1480, PETRI_PLACES=133, PETRI_TRANSITIONS=181} [2025-03-17 19:44:30,515 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 48 predicate places. [2025-03-17 19:44:30,516 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 181 transitions, 1480 flow [2025-03-17 19:44:30,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 22.083333333333332) internal successors, (530), 24 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:30,516 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:30,516 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:30,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-17 19:44:30,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:30,720 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-03-17 19:44:30,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:30,720 INFO L85 PathProgramCache]: Analyzing trace with hash 789045613, now seen corresponding path program 1 times [2025-03-17 19:44:30,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:30,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506395107] [2025-03-17 19:44:30,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:30,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:30,731 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:44:30,738 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:44:30,739 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:30,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:30,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 19:44:30,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:30,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506395107] [2025-03-17 19:44:30,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506395107] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:30,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017334542] [2025-03-17 19:44:30,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:30,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:30,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:30,849 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) [2025-03-17 19:44:30,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 19:44:30,908 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:44:30,929 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:44:30,930 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:30,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:30,931 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:44:30,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:30,949 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 19:44:30,949 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:44:30,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017334542] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:30,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:44:30,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2025-03-17 19:44:30,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399166456] [2025-03-17 19:44:30,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:30,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:44:30,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:30,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:44:30,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 19:44:30,951 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 90 [2025-03-17 19:44:30,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 181 transitions, 1480 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:30,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:30,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 90 [2025-03-17 19:44:30,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:32,057 INFO L124 PetriNetUnfolderBase]: 11184/18407 cut-off events. [2025-03-17 19:44:32,057 INFO L125 PetriNetUnfolderBase]: For 21969/22425 co-relation queries the response was YES. [2025-03-17 19:44:32,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52347 conditions, 18407 events. 11184/18407 cut-off events. For 21969/22425 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 129442 event pairs, 8986 based on Foata normal form. 0/13892 useless extension candidates. Maximal degree in co-relation 52313. Up to 16030 conditions per place. [2025-03-17 19:44:32,188 INFO L140 encePairwiseOnDemand]: 87/90 looper letters, 158 selfloop transitions, 1 changer transitions 0/179 dead transitions. [2025-03-17 19:44:32,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 179 transitions, 1790 flow [2025-03-17 19:44:32,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:44:32,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:44:32,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2025-03-17 19:44:32,189 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2025-03-17 19:44:32,189 INFO L175 Difference]: Start difference. First operand has 133 places, 181 transitions, 1480 flow. Second operand 3 states and 130 transitions. [2025-03-17 19:44:32,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 179 transitions, 1790 flow [2025-03-17 19:44:32,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 179 transitions, 1528 flow, removed 67 selfloop flow, removed 9 redundant places. [2025-03-17 19:44:32,204 INFO L231 Difference]: Finished difference. Result has 124 places, 179 transitions, 1212 flow [2025-03-17 19:44:32,204 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=1210, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1212, PETRI_PLACES=124, PETRI_TRANSITIONS=179} [2025-03-17 19:44:32,205 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 39 predicate places. [2025-03-17 19:44:32,205 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 179 transitions, 1212 flow [2025-03-17 19:44:32,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:32,205 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:32,205 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:32,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-17 19:44:32,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:32,406 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-03-17 19:44:32,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:32,406 INFO L85 PathProgramCache]: Analyzing trace with hash 789045614, now seen corresponding path program 1 times [2025-03-17 19:44:32,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:32,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647540997] [2025-03-17 19:44:32,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:32,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:32,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:44:32,428 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:44:32,429 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:32,429 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:32,523 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 19:44:32,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:32,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647540997] [2025-03-17 19:44:32,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647540997] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:32,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:44:32,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:44:32,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201652749] [2025-03-17 19:44:32,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:32,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:44:32,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:32,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:44:32,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:44:32,531 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 90 [2025-03-17 19:44:32,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 179 transitions, 1212 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:32,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:32,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 90 [2025-03-17 19:44:32,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:34,098 INFO L124 PetriNetUnfolderBase]: 15270/24673 cut-off events. [2025-03-17 19:44:34,099 INFO L125 PetriNetUnfolderBase]: For 21375/21375 co-relation queries the response was YES. [2025-03-17 19:44:34,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68009 conditions, 24673 events. 15270/24673 cut-off events. For 21375/21375 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 174263 event pairs, 5004 based on Foata normal form. 438/19410 useless extension candidates. Maximal degree in co-relation 67975. Up to 8002 conditions per place. [2025-03-17 19:44:34,326 INFO L140 encePairwiseOnDemand]: 85/90 looper letters, 223 selfloop transitions, 6 changer transitions 0/247 dead transitions. [2025-03-17 19:44:34,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 247 transitions, 1945 flow [2025-03-17 19:44:34,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:44:34,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:44:34,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 241 transitions. [2025-03-17 19:44:34,328 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5355555555555556 [2025-03-17 19:44:34,328 INFO L175 Difference]: Start difference. First operand has 124 places, 179 transitions, 1212 flow. Second operand 5 states and 241 transitions. [2025-03-17 19:44:34,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 247 transitions, 1945 flow [2025-03-17 19:44:34,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 247 transitions, 1944 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:44:34,396 INFO L231 Difference]: Finished difference. Result has 130 places, 184 transitions, 1258 flow [2025-03-17 19:44:34,396 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=1211, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1258, PETRI_PLACES=130, PETRI_TRANSITIONS=184} [2025-03-17 19:44:34,398 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 45 predicate places. [2025-03-17 19:44:34,398 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 184 transitions, 1258 flow [2025-03-17 19:44:34,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:34,399 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:34,399 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:34,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-17 19:44:34,399 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-03-17 19:44:34,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:34,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1122691389, now seen corresponding path program 1 times [2025-03-17 19:44:34,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:34,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691881056] [2025-03-17 19:44:34,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:34,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:34,407 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:44:34,430 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:44:34,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:34,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:34,844 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:34,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:34,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691881056] [2025-03-17 19:44:34,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691881056] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:34,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517520122] [2025-03-17 19:44:34,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:34,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:34,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:34,848 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) [2025-03-17 19:44:34,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 19:44:34,907 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:44:34,929 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:44:34,929 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:34,929 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:34,931 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-17 19:44:34,933 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:34,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 19:44:34,984 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:44:34,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517520122] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:34,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:44:34,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 12 [2025-03-17 19:44:34,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989418788] [2025-03-17 19:44:34,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:34,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:44:34,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:34,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:44:34,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-17 19:44:35,002 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 90 [2025-03-17 19:44:35,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 184 transitions, 1258 flow. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:35,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:35,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 90 [2025-03-17 19:44:35,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:36,732 INFO L124 PetriNetUnfolderBase]: 15689/25206 cut-off events. [2025-03-17 19:44:36,732 INFO L125 PetriNetUnfolderBase]: For 26389/26757 co-relation queries the response was YES. [2025-03-17 19:44:36,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72611 conditions, 25206 events. 15689/25206 cut-off events. For 26389/26757 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 180190 event pairs, 4572 based on Foata normal form. 32/19756 useless extension candidates. Maximal degree in co-relation 72573. Up to 15213 conditions per place. [2025-03-17 19:44:36,932 INFO L140 encePairwiseOnDemand]: 83/90 looper letters, 213 selfloop transitions, 8 changer transitions 0/242 dead transitions. [2025-03-17 19:44:36,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 242 transitions, 1936 flow [2025-03-17 19:44:36,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:44:36,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:44:36,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 234 transitions. [2025-03-17 19:44:36,933 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.52 [2025-03-17 19:44:36,933 INFO L175 Difference]: Start difference. First operand has 130 places, 184 transitions, 1258 flow. Second operand 5 states and 234 transitions. [2025-03-17 19:44:36,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 242 transitions, 1936 flow [2025-03-17 19:44:36,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 242 transitions, 1936 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:44:36,976 INFO L231 Difference]: Finished difference. Result has 136 places, 188 transitions, 1309 flow [2025-03-17 19:44:36,976 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1309, PETRI_PLACES=136, PETRI_TRANSITIONS=188} [2025-03-17 19:44:36,976 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 51 predicate places. [2025-03-17 19:44:36,976 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 188 transitions, 1309 flow [2025-03-17 19:44:36,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:36,977 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:36,977 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:36,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-17 19:44:37,177 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,SelfDestructingSolverStorable16 [2025-03-17 19:44:37,177 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-03-17 19:44:37,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:37,178 INFO L85 PathProgramCache]: Analyzing trace with hash -2069497416, now seen corresponding path program 1 times [2025-03-17 19:44:37,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:37,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730938619] [2025-03-17 19:44:37,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:37,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:37,189 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:44:37,196 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:44:37,198 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:37,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:37,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 19:44:37,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:37,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730938619] [2025-03-17 19:44:37,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730938619] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:37,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348499070] [2025-03-17 19:44:37,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:37,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:37,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:37,307 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) [2025-03-17 19:44:37,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-17 19:44:37,370 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:44:37,390 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:44:37,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:37,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:37,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 19:44:37,394 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:37,413 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 19:44:37,413 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:44:37,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348499070] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:37,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:44:37,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2025-03-17 19:44:37,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139595065] [2025-03-17 19:44:37,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:37,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:44:37,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:37,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:44:37,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 19:44:37,415 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 90 [2025-03-17 19:44:37,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 188 transitions, 1309 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:37,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:37,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 90 [2025-03-17 19:44:37,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:38,729 INFO L124 PetriNetUnfolderBase]: 10866/18268 cut-off events. [2025-03-17 19:44:38,729 INFO L125 PetriNetUnfolderBase]: For 29239/30025 co-relation queries the response was YES. [2025-03-17 19:44:38,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55854 conditions, 18268 events. 10866/18268 cut-off events. For 29239/30025 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 131278 event pairs, 8762 based on Foata normal form. 984/16731 useless extension candidates. Maximal degree in co-relation 55812. Up to 15678 conditions per place. [2025-03-17 19:44:38,871 INFO L140 encePairwiseOnDemand]: 87/90 looper letters, 162 selfloop transitions, 1 changer transitions 0/186 dead transitions. [2025-03-17 19:44:38,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 186 transitions, 1627 flow [2025-03-17 19:44:38,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:44:38,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:44:38,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2025-03-17 19:44:38,872 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4740740740740741 [2025-03-17 19:44:38,872 INFO L175 Difference]: Start difference. First operand has 136 places, 188 transitions, 1309 flow. Second operand 3 states and 128 transitions. [2025-03-17 19:44:38,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 186 transitions, 1627 flow [2025-03-17 19:44:38,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 186 transitions, 1619 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-03-17 19:44:38,909 INFO L231 Difference]: Finished difference. Result has 135 places, 186 transitions, 1295 flow [2025-03-17 19:44:38,909 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=1293, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1295, PETRI_PLACES=135, PETRI_TRANSITIONS=186} [2025-03-17 19:44:38,909 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 50 predicate places. [2025-03-17 19:44:38,910 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 186 transitions, 1295 flow [2025-03-17 19:44:38,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:38,910 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:38,910 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:38,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-17 19:44:39,110 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,SelfDestructingSolverStorable17 [2025-03-17 19:44:39,111 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-03-17 19:44:39,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:39,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1122691388, now seen corresponding path program 1 times [2025-03-17 19:44:39,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:39,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024703791] [2025-03-17 19:44:39,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:39,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:39,121 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:44:39,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:44:39,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:39,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:39,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:44:39,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:39,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024703791] [2025-03-17 19:44:39,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024703791] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:39,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213476437] [2025-03-17 19:44:39,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:39,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:39,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:39,430 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) [2025-03-17 19:44:39,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-17 19:44:39,492 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:44:39,512 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:44:39,512 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:39,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:39,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-17 19:44:39,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:39,561 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 19:44:39,561 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:44:39,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213476437] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:39,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:44:39,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 11 [2025-03-17 19:44:39,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733163330] [2025-03-17 19:44:39,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:39,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:44:39,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:39,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:44:39,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:44:39,572 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 90 [2025-03-17 19:44:39,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 186 transitions, 1295 flow. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:39,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:39,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 90 [2025-03-17 19:44:39,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:40,973 INFO L124 PetriNetUnfolderBase]: 12300/20071 cut-off events. [2025-03-17 19:44:40,973 INFO L125 PetriNetUnfolderBase]: For 29566/29910 co-relation queries the response was YES. [2025-03-17 19:44:41,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61504 conditions, 20071 events. 12300/20071 cut-off events. For 29566/29910 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 137488 event pairs, 4368 based on Foata normal form. 138/17236 useless extension candidates. Maximal degree in co-relation 61461. Up to 10006 conditions per place. [2025-03-17 19:44:41,107 INFO L140 encePairwiseOnDemand]: 82/90 looper letters, 208 selfloop transitions, 7 changer transitions 0/235 dead transitions. [2025-03-17 19:44:41,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 235 transitions, 1922 flow [2025-03-17 19:44:41,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:44:41,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:44:41,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 223 transitions. [2025-03-17 19:44:41,108 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4955555555555556 [2025-03-17 19:44:41,108 INFO L175 Difference]: Start difference. First operand has 135 places, 186 transitions, 1295 flow. Second operand 5 states and 223 transitions. [2025-03-17 19:44:41,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 235 transitions, 1922 flow [2025-03-17 19:44:41,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 235 transitions, 1916 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:44:41,145 INFO L231 Difference]: Finished difference. Result has 138 places, 185 transitions, 1301 flow [2025-03-17 19:44:41,146 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=1279, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1301, PETRI_PLACES=138, PETRI_TRANSITIONS=185} [2025-03-17 19:44:41,146 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 53 predicate places. [2025-03-17 19:44:41,146 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 185 transitions, 1301 flow [2025-03-17 19:44:41,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:41,146 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:41,146 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:41,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-17 19:44:41,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:41,347 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-03-17 19:44:41,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:41,347 INFO L85 PathProgramCache]: Analyzing trace with hash 270090521, now seen corresponding path program 1 times [2025-03-17 19:44:41,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:41,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69518914] [2025-03-17 19:44:41,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:41,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:41,356 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:44:41,362 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:44:41,362 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:41,362 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:41,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 19:44:41,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:41,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69518914] [2025-03-17 19:44:41,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69518914] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:41,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:44:41,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:44:41,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274602930] [2025-03-17 19:44:41,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:41,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:44:41,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:41,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:44:41,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:44:41,415 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 90 [2025-03-17 19:44:41,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 185 transitions, 1301 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:41,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:41,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 90 [2025-03-17 19:44:41,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:43,134 INFO L124 PetriNetUnfolderBase]: 15807/24408 cut-off events. [2025-03-17 19:44:43,134 INFO L125 PetriNetUnfolderBase]: For 31846/32220 co-relation queries the response was YES. [2025-03-17 19:44:43,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75908 conditions, 24408 events. 15807/24408 cut-off events. For 31846/32220 co-relation queries the response was YES. Maximal size of possible extension queue 670. Compared 165325 event pairs, 6812 based on Foata normal form. 538/20631 useless extension candidates. Maximal degree in co-relation 75864. Up to 16434 conditions per place. [2025-03-17 19:44:43,316 INFO L140 encePairwiseOnDemand]: 85/90 looper letters, 214 selfloop transitions, 4 changer transitions 0/238 dead transitions. [2025-03-17 19:44:43,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 238 transitions, 2034 flow [2025-03-17 19:44:43,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:44:43,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:44:43,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 189 transitions. [2025-03-17 19:44:43,317 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.525 [2025-03-17 19:44:43,317 INFO L175 Difference]: Start difference. First operand has 138 places, 185 transitions, 1301 flow. Second operand 4 states and 189 transitions. [2025-03-17 19:44:43,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 238 transitions, 2034 flow [2025-03-17 19:44:43,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 238 transitions, 2022 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:44:43,354 INFO L231 Difference]: Finished difference. Result has 141 places, 187 transitions, 1323 flow [2025-03-17 19:44:43,354 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1323, PETRI_PLACES=141, PETRI_TRANSITIONS=187} [2025-03-17 19:44:43,355 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 56 predicate places. [2025-03-17 19:44:43,355 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 187 transitions, 1323 flow [2025-03-17 19:44:43,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:43,355 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:43,355 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:43,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-17 19:44:43,355 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-03-17 19:44:43,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:43,355 INFO L85 PathProgramCache]: Analyzing trace with hash -270327061, now seen corresponding path program 1 times [2025-03-17 19:44:43,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:43,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545701428] [2025-03-17 19:44:43,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:43,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:43,361 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:44:43,366 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:44:43,367 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:43,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:43,397 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 19:44:43,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:43,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545701428] [2025-03-17 19:44:43,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545701428] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:43,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603397263] [2025-03-17 19:44:43,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:43,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:43,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:43,399 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) [2025-03-17 19:44:43,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-17 19:44:43,460 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:44:43,478 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:44:43,478 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:43,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:43,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-17 19:44:43,480 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:43,549 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:43,549 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:43,637 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:43,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603397263] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:44:43,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:44:43,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 15 [2025-03-17 19:44:43,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577324971] [2025-03-17 19:44:43,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:44:43,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-17 19:44:43,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:43,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-17 19:44:43,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2025-03-17 19:44:43,702 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 90 [2025-03-17 19:44:43,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 187 transitions, 1323 flow. Second operand has 15 states, 15 states have (on average 23.733333333333334) internal successors, (356), 15 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:43,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:43,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 90 [2025-03-17 19:44:43,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:47,057 INFO L124 PetriNetUnfolderBase]: 20735/35472 cut-off events. [2025-03-17 19:44:47,057 INFO L125 PetriNetUnfolderBase]: For 70020/71784 co-relation queries the response was YES. [2025-03-17 19:44:47,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112851 conditions, 35472 events. 20735/35472 cut-off events. For 70020/71784 co-relation queries the response was YES. Maximal size of possible extension queue 813. Compared 281921 event pairs, 8428 based on Foata normal form. 1352/32653 useless extension candidates. Maximal degree in co-relation 112805. Up to 12532 conditions per place. [2025-03-17 19:44:47,438 INFO L140 encePairwiseOnDemand]: 74/90 looper letters, 340 selfloop transitions, 85 changer transitions 12/458 dead transitions. [2025-03-17 19:44:47,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 458 transitions, 3926 flow [2025-03-17 19:44:47,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-17 19:44:47,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-17 19:44:47,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 568 transitions. [2025-03-17 19:44:47,440 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3712418300653595 [2025-03-17 19:44:47,440 INFO L175 Difference]: Start difference. First operand has 141 places, 187 transitions, 1323 flow. Second operand 17 states and 568 transitions. [2025-03-17 19:44:47,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 458 transitions, 3926 flow [2025-03-17 19:44:47,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 458 transitions, 3907 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:44:47,539 INFO L231 Difference]: Finished difference. Result has 164 places, 243 transitions, 2183 flow [2025-03-17 19:44:47,539 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=1319, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2183, PETRI_PLACES=164, PETRI_TRANSITIONS=243} [2025-03-17 19:44:47,540 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 79 predicate places. [2025-03-17 19:44:47,540 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 243 transitions, 2183 flow [2025-03-17 19:44:47,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 23.733333333333334) internal successors, (356), 15 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:47,540 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:47,540 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:47,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-17 19:44:47,740 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,SelfDestructingSolverStorable20 [2025-03-17 19:44:47,740 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-03-17 19:44:47,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:47,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1384561095, now seen corresponding path program 1 times [2025-03-17 19:44:47,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:47,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107044968] [2025-03-17 19:44:47,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:47,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:47,748 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-17 19:44:47,763 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 19:44:47,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:47,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:48,049 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:48,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:48,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107044968] [2025-03-17 19:44:48,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107044968] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:48,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941039316] [2025-03-17 19:44:48,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:44:48,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:44:48,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:44:48,054 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) [2025-03-17 19:44:48,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-17 19:44:48,134 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-17 19:44:48,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 19:44:48,159 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:44:48,159 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:48,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-03-17 19:44:48,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:44:48,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 19:44:48,204 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 [2025-03-17 19:44:48,333 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-17 19:44:48,333 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 11 treesize of output 11 [2025-03-17 19:44:48,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2025-03-17 19:44:48,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:44:48,599 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:44:48,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 19:44:48,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941039316] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-17 19:44:48,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-17 19:44:48,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 9] total 22 [2025-03-17 19:44:48,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420835339] [2025-03-17 19:44:48,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:48,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:44:48,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:48,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:44:48,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2025-03-17 19:44:48,819 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 90 [2025-03-17 19:44:48,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 243 transitions, 2183 flow. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:48,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:48,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 90 [2025-03-17 19:44:48,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:53,021 INFO L124 PetriNetUnfolderBase]: 27649/45228 cut-off events. [2025-03-17 19:44:53,021 INFO L125 PetriNetUnfolderBase]: For 105130/106100 co-relation queries the response was YES. [2025-03-17 19:44:53,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147243 conditions, 45228 events. 27649/45228 cut-off events. For 105130/106100 co-relation queries the response was YES. Maximal size of possible extension queue 1143. Compared 355476 event pairs, 11418 based on Foata normal form. 926/41226 useless extension candidates. Maximal degree in co-relation 147188. Up to 33173 conditions per place. [2025-03-17 19:44:53,461 INFO L140 encePairwiseOnDemand]: 78/90 looper letters, 275 selfloop transitions, 35 changer transitions 0/331 dead transitions. [2025-03-17 19:44:53,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 331 transitions, 3355 flow [2025-03-17 19:44:53,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:44:53,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:44:53,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 270 transitions. [2025-03-17 19:44:53,463 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-03-17 19:44:53,463 INFO L175 Difference]: Start difference. First operand has 164 places, 243 transitions, 2183 flow. Second operand 6 states and 270 transitions. [2025-03-17 19:44:53,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 331 transitions, 3355 flow [2025-03-17 19:44:53,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 331 transitions, 3310 flow, removed 15 selfloop flow, removed 2 redundant places. [2025-03-17 19:44:53,602 INFO L231 Difference]: Finished difference. Result has 170 places, 259 transitions, 2461 flow [2025-03-17 19:44:53,603 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=2162, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2461, PETRI_PLACES=170, PETRI_TRANSITIONS=259} [2025-03-17 19:44:53,603 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 85 predicate places. [2025-03-17 19:44:53,603 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 259 transitions, 2461 flow [2025-03-17 19:44:53,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:53,603 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:44:53,603 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:44:53,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-17 19:44:53,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2025-03-17 19:44:53,804 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-03-17 19:44:53,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:44:53,804 INFO L85 PathProgramCache]: Analyzing trace with hash 974581033, now seen corresponding path program 2 times [2025-03-17 19:44:53,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:44:53,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032962766] [2025-03-17 19:44:53,804 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:44:53,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:44:53,811 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-03-17 19:44:53,822 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 21 statements. [2025-03-17 19:44:53,822 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:44:53,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:44:53,890 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 19:44:53,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:44:53,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032962766] [2025-03-17 19:44:53,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032962766] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:44:53,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:44:53,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 19:44:53,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782354745] [2025-03-17 19:44:53,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:44:53,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:44:53,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:44:53,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:44:53,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:44:53,910 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 90 [2025-03-17 19:44:53,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 259 transitions, 2461 flow. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:44:53,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:44:53,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 90 [2025-03-17 19:44:53,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:44:59,341 INFO L124 PetriNetUnfolderBase]: 29777/48666 cut-off events. [2025-03-17 19:44:59,342 INFO L125 PetriNetUnfolderBase]: For 118375/118857 co-relation queries the response was YES. [2025-03-17 19:44:59,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163088 conditions, 48666 events. 29777/48666 cut-off events. For 118375/118857 co-relation queries the response was YES. Maximal size of possible extension queue 1204. Compared 383211 event pairs, 14582 based on Foata normal form. 250/43700 useless extension candidates. Maximal degree in co-relation 163029. Up to 37863 conditions per place. [2025-03-17 19:44:59,879 INFO L140 encePairwiseOnDemand]: 84/90 looper letters, 257 selfloop transitions, 22 changer transitions 1/300 dead transitions. [2025-03-17 19:44:59,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 300 transitions, 3161 flow [2025-03-17 19:44:59,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:44:59,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:44:59,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 239 transitions. [2025-03-17 19:44:59,881 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4425925925925926 [2025-03-17 19:44:59,881 INFO L175 Difference]: Start difference. First operand has 170 places, 259 transitions, 2461 flow. Second operand 6 states and 239 transitions. [2025-03-17 19:44:59,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 300 transitions, 3161 flow [2025-03-17 19:45:00,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 300 transitions, 3161 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:45:00,094 INFO L231 Difference]: Finished difference. Result has 177 places, 260 transitions, 2531 flow [2025-03-17 19:45:00,094 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=2461, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2531, PETRI_PLACES=177, PETRI_TRANSITIONS=260} [2025-03-17 19:45:00,094 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 92 predicate places. [2025-03-17 19:45:00,094 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 260 transitions, 2531 flow [2025-03-17 19:45:00,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:00,095 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:00,095 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:45:00,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-17 19:45:00,095 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-03-17 19:45:00,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:00,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1313850762, now seen corresponding path program 1 times [2025-03-17 19:45:00,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:00,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960646589] [2025-03-17 19:45:00,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:00,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:00,101 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-17 19:45:00,108 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 19:45:00,109 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:00,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:00,351 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:45:00,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:00,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960646589] [2025-03-17 19:45:00,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960646589] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:45:00,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927318335] [2025-03-17 19:45:00,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:00,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:00,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:45:00,354 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) [2025-03-17 19:45:00,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-17 19:45:00,419 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-17 19:45:00,439 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 19:45:00,440 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:00,440 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:00,442 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-17 19:45:00,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:45:00,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 19:45:00,480 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 [2025-03-17 19:45:00,524 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-17 19:45:00,524 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 11 treesize of output 11 [2025-03-17 19:45:00,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-17 19:45:00,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-17 19:45:00,678 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:00,678 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:45:00,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 19:45:00,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927318335] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-17 19:45:00,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-17 19:45:00,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10, 10] total 26 [2025-03-17 19:45:00,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78794410] [2025-03-17 19:45:00,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:45:00,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 19:45:00,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:00,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 19:45:00,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2025-03-17 19:45:00,841 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 90 [2025-03-17 19:45:00,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 260 transitions, 2531 flow. Second operand has 7 states, 7 states have (on average 27.857142857142858) internal successors, (195), 7 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:00,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:00,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 90 [2025-03-17 19:45:00,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:05,388 INFO L124 PetriNetUnfolderBase]: 26259/42846 cut-off events. [2025-03-17 19:45:05,388 INFO L125 PetriNetUnfolderBase]: For 95165/97501 co-relation queries the response was YES. [2025-03-17 19:45:05,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145682 conditions, 42846 events. 26259/42846 cut-off events. For 95165/97501 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 320626 event pairs, 5568 based on Foata normal form. 876/39626 useless extension candidates. Maximal degree in co-relation 145619. Up to 25190 conditions per place. [2025-03-17 19:45:05,819 INFO L140 encePairwiseOnDemand]: 78/90 looper letters, 273 selfloop transitions, 36 changer transitions 0/329 dead transitions. [2025-03-17 19:45:05,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 329 transitions, 3520 flow [2025-03-17 19:45:05,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:45:05,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:45:05,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 262 transitions. [2025-03-17 19:45:05,821 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48518518518518516 [2025-03-17 19:45:05,821 INFO L175 Difference]: Start difference. First operand has 177 places, 260 transitions, 2531 flow. Second operand 6 states and 262 transitions. [2025-03-17 19:45:05,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 329 transitions, 3520 flow [2025-03-17 19:45:06,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 329 transitions, 3479 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:45:06,152 INFO L231 Difference]: Finished difference. Result has 182 places, 263 transitions, 2624 flow [2025-03-17 19:45:06,152 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=2479, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2624, PETRI_PLACES=182, PETRI_TRANSITIONS=263} [2025-03-17 19:45:06,153 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 97 predicate places. [2025-03-17 19:45:06,153 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 263 transitions, 2624 flow [2025-03-17 19:45:06,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.857142857142858) internal successors, (195), 7 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:06,153 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:06,153 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:45:06,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-17 19:45:06,353 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,SelfDestructingSolverStorable23 [2025-03-17 19:45:06,354 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-03-17 19:45:06,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:06,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1770546791, now seen corresponding path program 1 times [2025-03-17 19:45:06,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:06,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384817318] [2025-03-17 19:45:06,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:06,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:06,360 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-17 19:45:06,370 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 19:45:06,370 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:06,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:06,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:06,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:06,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384817318] [2025-03-17 19:45:06,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384817318] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:45:06,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583714935] [2025-03-17 19:45:06,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:06,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:06,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:45:06,697 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) [2025-03-17 19:45:06,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-17 19:45:06,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-17 19:45:06,772 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 19:45:06,772 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:06,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:06,773 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-17 19:45:06,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:45:06,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 19:45:06,799 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 [2025-03-17 19:45:06,847 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-17 19:45:06,848 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 11 treesize of output 11 [2025-03-17 19:45:06,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-17 19:45:06,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-17 19:45:06,982 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:06,982 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:45:07,110 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 19:45:07,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583714935] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-17 19:45:07,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-17 19:45:07,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 10] total 27 [2025-03-17 19:45:07,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630783050] [2025-03-17 19:45:07,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:45:07,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 19:45:07,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:07,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 19:45:07,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2025-03-17 19:45:07,127 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 90 [2025-03-17 19:45:07,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 263 transitions, 2624 flow. Second operand has 7 states, 7 states have (on average 27.857142857142858) internal successors, (195), 7 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:07,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:07,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 90 [2025-03-17 19:45:07,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:11,848 INFO L124 PetriNetUnfolderBase]: 25155/41422 cut-off events. [2025-03-17 19:45:11,848 INFO L125 PetriNetUnfolderBase]: For 105357/106995 co-relation queries the response was YES. [2025-03-17 19:45:12,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148673 conditions, 41422 events. 25155/41422 cut-off events. For 105357/106995 co-relation queries the response was YES. Maximal size of possible extension queue 930. Compared 315746 event pairs, 5956 based on Foata normal form. 316/37894 useless extension candidates. Maximal degree in co-relation 148607. Up to 22978 conditions per place. [2025-03-17 19:45:12,285 INFO L140 encePairwiseOnDemand]: 78/90 looper letters, 275 selfloop transitions, 35 changer transitions 0/331 dead transitions. [2025-03-17 19:45:12,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 331 transitions, 3628 flow [2025-03-17 19:45:12,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:45:12,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:45:12,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 265 transitions. [2025-03-17 19:45:12,286 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2025-03-17 19:45:12,286 INFO L175 Difference]: Start difference. First operand has 182 places, 263 transitions, 2624 flow. Second operand 6 states and 265 transitions. [2025-03-17 19:45:12,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 331 transitions, 3628 flow [2025-03-17 19:45:12,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 331 transitions, 3610 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:45:12,537 INFO L231 Difference]: Finished difference. Result has 187 places, 263 transitions, 2707 flow [2025-03-17 19:45:12,537 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=2595, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2707, PETRI_PLACES=187, PETRI_TRANSITIONS=263} [2025-03-17 19:45:12,537 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 102 predicate places. [2025-03-17 19:45:12,537 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 263 transitions, 2707 flow [2025-03-17 19:45:12,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.857142857142858) internal successors, (195), 7 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:12,538 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:12,538 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:45:12,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-17 19:45:12,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:12,738 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-03-17 19:45:12,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:12,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1762278412, now seen corresponding path program 1 times [2025-03-17 19:45:12,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:12,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918097268] [2025-03-17 19:45:12,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:12,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:12,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-17 19:45:12,746 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-17 19:45:12,747 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:12,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:12,767 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-17 19:45:12,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:12,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918097268] [2025-03-17 19:45:12,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918097268] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:45:12,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:45:12,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:45:12,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609217854] [2025-03-17 19:45:12,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:45:12,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:45:12,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:12,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:45:12,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:45:12,770 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 90 [2025-03-17 19:45:12,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 263 transitions, 2707 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:12,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:12,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 90 [2025-03-17 19:45:12,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:16,707 INFO L124 PetriNetUnfolderBase]: 19419/34350 cut-off events. [2025-03-17 19:45:16,708 INFO L125 PetriNetUnfolderBase]: For 120739/122085 co-relation queries the response was YES. [2025-03-17 19:45:16,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124543 conditions, 34350 events. 19419/34350 cut-off events. For 120739/122085 co-relation queries the response was YES. Maximal size of possible extension queue 835. Compared 283373 event pairs, 8880 based on Foata normal form. 838/31638 useless extension candidates. Maximal degree in co-relation 124475. Up to 27668 conditions per place. [2025-03-17 19:45:17,047 INFO L140 encePairwiseOnDemand]: 88/90 looper letters, 242 selfloop transitions, 2 changer transitions 0/268 dead transitions. [2025-03-17 19:45:17,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 268 transitions, 3201 flow [2025-03-17 19:45:17,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:45:17,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:45:17,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 133 transitions. [2025-03-17 19:45:17,048 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4925925925925926 [2025-03-17 19:45:17,048 INFO L175 Difference]: Start difference. First operand has 187 places, 263 transitions, 2707 flow. Second operand 3 states and 133 transitions. [2025-03-17 19:45:17,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 268 transitions, 3201 flow [2025-03-17 19:45:17,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 268 transitions, 3153 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:45:17,245 INFO L231 Difference]: Finished difference. Result has 185 places, 261 transitions, 2641 flow [2025-03-17 19:45:17,245 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=2637, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2641, PETRI_PLACES=185, PETRI_TRANSITIONS=261} [2025-03-17 19:45:17,245 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 100 predicate places. [2025-03-17 19:45:17,245 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 261 transitions, 2641 flow [2025-03-17 19:45:17,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:17,245 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:17,245 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:45:17,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-17 19:45:17,245 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2025-03-17 19:45:17,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:17,246 INFO L85 PathProgramCache]: Analyzing trace with hash 37951187, now seen corresponding path program 1 times [2025-03-17 19:45:17,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:17,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445968057] [2025-03-17 19:45:17,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:17,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:17,251 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-17 19:45:17,260 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-17 19:45:17,260 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:17,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:17,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:17,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:17,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445968057] [2025-03-17 19:45:17,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445968057] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:45:17,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251517913] [2025-03-17 19:45:17,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:17,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:17,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:45:17,557 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:45:17,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-17 19:45:17,625 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-17 19:45:17,649 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-17 19:45:17,649 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:17,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:17,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-17 19:45:17,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:45:17,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 19:45:17,685 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 [2025-03-17 19:45:17,728 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-17 19:45:17,728 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 11 treesize of output 11 [2025-03-17 19:45:17,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-17 19:45:17,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-17 19:45:17,873 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:17,873 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:45:18,044 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 19:45:18,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251517913] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-17 19:45:18,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-17 19:45:18,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 11] total 27 [2025-03-17 19:45:18,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180950138] [2025-03-17 19:45:18,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:45:18,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 19:45:18,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:18,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 19:45:18,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=672, Unknown=0, NotChecked=0, Total=756 [2025-03-17 19:45:18,064 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 90 [2025-03-17 19:45:18,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 261 transitions, 2641 flow. Second operand has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:18,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:18,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 90 [2025-03-17 19:45:18,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand