./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-max-array-hom.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 25cf9c0a16564c460f6e824f90a2df4185d2e5d2c682a221258efaf06dec8ca4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 15:29:24,866 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 15:29:24,929 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-04 15:29:24,933 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 15:29:24,934 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 15:29:24,956 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 15:29:24,958 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 15:29:24,958 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 15:29:24,958 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 15:29:24,958 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 15:29:24,959 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 15:29:24,959 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 15:29:24,959 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 15:29:24,959 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 15:29:24,959 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 15:29:24,960 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 15:29:24,960 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 15:29:24,960 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 15:29:24,960 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 15:29:24,960 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 15:29:24,960 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 15:29:24,960 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 15:29:24,960 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 15:29:24,961 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 15:29:24,961 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 15:29:24,961 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 15:29:24,961 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 15:29:24,961 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 15:29:24,961 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 15:29:24,961 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 15:29:24,961 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 15:29:24,961 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 15:29:24,961 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 15:29:24,961 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 15:29:24,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:29:24,962 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 15:29:24,962 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 15:29:24,962 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 15:29:24,962 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 15:29:24,962 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 15:29:24,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 15:29:24,962 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 15:29:24,962 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 15:29:24,962 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 15:29:24,963 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 15:29:24,963 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 -> 25cf9c0a16564c460f6e824f90a2df4185d2e5d2c682a221258efaf06dec8ca4 [2025-03-04 15:29:25,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 15:29:25,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 15:29:25,205 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 15:29:25,206 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 15:29:25,206 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 15:29:25,207 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c [2025-03-04 15:29:26,330 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/793a6c23e/13c0a2daf65041dcb329b44fe5ecaed0/FLAG49b2b1148 [2025-03-04 15:29:26,560 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 15:29:26,561 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c [2025-03-04 15:29:26,584 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/793a6c23e/13c0a2daf65041dcb329b44fe5ecaed0/FLAG49b2b1148 [2025-03-04 15:29:26,905 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/793a6c23e/13c0a2daf65041dcb329b44fe5ecaed0 [2025-03-04 15:29:26,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 15:29:26,908 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 15:29:26,909 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 15:29:26,909 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 15:29:26,913 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 15:29:26,914 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:29:26" (1/1) ... [2025-03-04 15:29:26,916 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@94bf333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:26, skipping insertion in model container [2025-03-04 15:29:26,916 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:29:26" (1/1) ... [2025-03-04 15:29:26,932 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 15:29:27,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:29:27,086 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 15:29:27,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:29:27,116 INFO L204 MainTranslator]: Completed translation [2025-03-04 15:29:27,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:27 WrapperNode [2025-03-04 15:29:27,117 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 15:29:27,119 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 15:29:27,119 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 15:29:27,119 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 15:29:27,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:27" (1/1) ... [2025-03-04 15:29:27,133 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:27" (1/1) ... [2025-03-04 15:29:27,152 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 88 [2025-03-04 15:29:27,154 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 15:29:27,154 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 15:29:27,154 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 15:29:27,154 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 15:29:27,160 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:27" (1/1) ... [2025-03-04 15:29:27,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:27" (1/1) ... [2025-03-04 15:29:27,163 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:27" (1/1) ... [2025-03-04 15:29:27,180 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-03-04 15:29:27,180 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:27" (1/1) ... [2025-03-04 15:29:27,180 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:27" (1/1) ... [2025-03-04 15:29:27,187 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:27" (1/1) ... [2025-03-04 15:29:27,191 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:27" (1/1) ... [2025-03-04 15:29:27,192 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:27" (1/1) ... [2025-03-04 15:29:27,192 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:27" (1/1) ... [2025-03-04 15:29:27,193 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 15:29:27,194 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 15:29:27,194 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 15:29:27,194 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 15:29:27,195 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:27" (1/1) ... [2025-03-04 15:29:27,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:29:27,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:29:27,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 15:29:27,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 15:29:27,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 15:29:27,248 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-04 15:29:27,248 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-04 15:29:27,248 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-04 15:29:27,248 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-04 15:29:27,248 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-04 15:29:27,249 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-04 15:29:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 15:29:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 15:29:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 15:29:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 15:29:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-04 15:29:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-04 15:29:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 15:29:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 15:29:27,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 15:29:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 15:29:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 15:29:27,250 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 15:29:27,320 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 15:29:27,321 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 15:29:27,569 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 15:29:27,569 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 15:29:27,723 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 15:29:27,723 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 15:29:27,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:29:27 BoogieIcfgContainer [2025-03-04 15:29:27,724 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 15:29:27,725 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 15:29:27,726 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 15:29:27,729 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 15:29:27,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 03:29:26" (1/3) ... [2025-03-04 15:29:27,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18458a4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:29:27, skipping insertion in model container [2025-03-04 15:29:27,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:27" (2/3) ... [2025-03-04 15:29:27,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18458a4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:29:27, skipping insertion in model container [2025-03-04 15:29:27,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:29:27" (3/3) ... [2025-03-04 15:29:27,734 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array-hom.wvr.c [2025-03-04 15:29:27,743 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 15:29:27,744 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-max-array-hom.wvr.c that has 4 procedures, 44 locations, 1 initial locations, 4 loop locations, and 8 error locations. [2025-03-04 15:29:27,744 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 15:29:27,806 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-04 15:29:27,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 47 transitions, 115 flow [2025-03-04 15:29:27,854 INFO L124 PetriNetUnfolderBase]: 4/44 cut-off events. [2025-03-04 15:29:27,856 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-04 15:29:27,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 4/44 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 96 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2025-03-04 15:29:27,859 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 47 transitions, 115 flow [2025-03-04 15:29:27,861 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 42 transitions, 99 flow [2025-03-04 15:29:27,867 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:29:27,875 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;@316aa05b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:29:27,876 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2025-03-04 15:29:27,879 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:29:27,880 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-04 15:29:27,880 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:29:27,880 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:27,880 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-04 15:29:27,882 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-03-04 15:29:27,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:27,888 INFO L85 PathProgramCache]: Analyzing trace with hash 383464, now seen corresponding path program 1 times [2025-03-04 15:29:27,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:27,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469691737] [2025-03-04 15:29:27,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:27,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:27,962 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 15:29:27,980 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 15:29:27,980 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:27,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:28,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:28,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:28,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469691737] [2025-03-04 15:29:28,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469691737] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:29:28,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:29:28,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:29:28,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457072778] [2025-03-04 15:29:28,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:29:28,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:29:28,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:28,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:29:28,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:29:28,126 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2025-03-04 15:29:28,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:28,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:28,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2025-03-04 15:29:28,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:28,326 INFO L124 PetriNetUnfolderBase]: 431/833 cut-off events. [2025-03-04 15:29:28,326 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2025-03-04 15:29:28,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1526 conditions, 833 events. 431/833 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4365 event pairs, 306 based on Foata normal form. 1/766 useless extension candidates. Maximal degree in co-relation 1365. Up to 625 conditions per place. [2025-03-04 15:29:28,335 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 25 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2025-03-04 15:29:28,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 163 flow [2025-03-04 15:29:28,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:29:28,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:29:28,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2025-03-04 15:29:28,348 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5691489361702128 [2025-03-04 15:29:28,350 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 99 flow. Second operand 4 states and 107 transitions. [2025-03-04 15:29:28,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 163 flow [2025-03-04 15:29:28,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 154 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-04 15:29:28,357 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 119 flow [2025-03-04 15:29:28,359 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2025-03-04 15:29:28,362 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2025-03-04 15:29:28,362 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 119 flow [2025-03-04 15:29:28,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:28,362 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:28,363 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-04 15:29:28,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 15:29:28,363 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-03-04 15:29:28,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:28,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1460814475, now seen corresponding path program 1 times [2025-03-04 15:29:28,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:28,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110654261] [2025-03-04 15:29:28,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:28,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:28,376 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 15:29:28,386 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 15:29:28,386 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:28,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:28,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:28,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:28,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110654261] [2025-03-04 15:29:28,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110654261] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:29:28,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266165004] [2025-03-04 15:29:28,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:28,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:29:28,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:29:28,500 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:29:28,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 15:29:28,552 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 15:29:28,564 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 15:29:28,564 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:28,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:28,566 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:29:28,568 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:29:28,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:28,604 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:29:28,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266165004] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:29:28,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:29:28,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-04 15:29:28,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952205906] [2025-03-04 15:29:28,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:29:28,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:29:28,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:28,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:29:28,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-04 15:29:28,612 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2025-03-04 15:29:28,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:28,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:28,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2025-03-04 15:29:28,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:28,765 INFO L124 PetriNetUnfolderBase]: 431/832 cut-off events. [2025-03-04 15:29:28,765 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2025-03-04 15:29:28,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1510 conditions, 832 events. 431/832 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4368 event pairs, 306 based on Foata normal form. 1/766 useless extension candidates. Maximal degree in co-relation 1483. Up to 620 conditions per place. [2025-03-04 15:29:28,771 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 21 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2025-03-04 15:29:28,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 171 flow [2025-03-04 15:29:28,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:29:28,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:29:28,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2025-03-04 15:29:28,772 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5070921985815603 [2025-03-04 15:29:28,773 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 119 flow. Second operand 6 states and 143 transitions. [2025-03-04 15:29:28,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 171 flow [2025-03-04 15:29:28,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:29:28,774 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 126 flow [2025-03-04 15:29:28,774 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=126, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2025-03-04 15:29:28,775 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 3 predicate places. [2025-03-04 15:29:28,775 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 126 flow [2025-03-04 15:29:28,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:28,775 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:28,775 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-04 15:29:28,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 15:29:28,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:29:28,976 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-03-04 15:29:28,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:28,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1959391843, now seen corresponding path program 1 times [2025-03-04 15:29:28,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:28,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499229959] [2025-03-04 15:29:28,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:28,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:28,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:29:28,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:29:28,995 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:28,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:29,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:29,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:29,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499229959] [2025-03-04 15:29:29,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499229959] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:29:29,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690292689] [2025-03-04 15:29:29,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:29,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:29:29,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:29:29,089 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:29:29,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 15:29:29,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:29:29,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:29:29,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:29,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:29,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:29:29,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:29:29,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:29,163 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:29:29,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:29,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690292689] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:29:29,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:29:29,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-04 15:29:29,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483894000] [2025-03-04 15:29:29,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:29:29,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-04 15:29:29,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:29,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-04 15:29:29,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-04 15:29:29,221 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2025-03-04 15:29:29,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 126 flow. Second operand has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:29,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:29,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2025-03-04 15:29:29,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:29,420 INFO L124 PetriNetUnfolderBase]: 434/844 cut-off events. [2025-03-04 15:29:29,420 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2025-03-04 15:29:29,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1554 conditions, 844 events. 434/844 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4455 event pairs, 306 based on Foata normal form. 3/778 useless extension candidates. Maximal degree in co-relation 1484. Up to 627 conditions per place. [2025-03-04 15:29:29,426 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 24 selfloop transitions, 13 changer transitions 0/53 dead transitions. [2025-03-04 15:29:29,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 53 transitions, 254 flow [2025-03-04 15:29:29,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 15:29:29,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 15:29:29,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 230 transitions. [2025-03-04 15:29:29,430 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2025-03-04 15:29:29,430 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 126 flow. Second operand 10 states and 230 transitions. [2025-03-04 15:29:29,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 53 transitions, 254 flow [2025-03-04 15:29:29,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 208 flow, removed 8 selfloop flow, removed 5 redundant places. [2025-03-04 15:29:29,433 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 178 flow [2025-03-04 15:29:29,434 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=178, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2025-03-04 15:29:29,435 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 10 predicate places. [2025-03-04 15:29:29,435 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 178 flow [2025-03-04 15:29:29,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:29,435 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:29,435 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:29:29,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-04 15:29:29,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-04 15:29:29,639 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-03-04 15:29:29,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:29,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1650262515, now seen corresponding path program 1 times [2025-03-04 15:29:29,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:29,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276468413] [2025-03-04 15:29:29,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:29,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:29,645 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 15:29:29,648 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 15:29:29,649 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:29,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:29,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:29,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:29,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276468413] [2025-03-04 15:29:29,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276468413] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:29:29,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:29:29,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:29:29,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347555674] [2025-03-04 15:29:29,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:29:29,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:29:29,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:29,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:29:29,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:29:29,689 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2025-03-04 15:29:29,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:29,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:29,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2025-03-04 15:29:29,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:29,875 INFO L124 PetriNetUnfolderBase]: 1064/1850 cut-off events. [2025-03-04 15:29:29,875 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2025-03-04 15:29:29,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3496 conditions, 1850 events. 1064/1850 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 10212 event pairs, 449 based on Foata normal form. 42/1790 useless extension candidates. Maximal degree in co-relation 3462. Up to 1096 conditions per place. [2025-03-04 15:29:29,883 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 65 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2025-03-04 15:29:29,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 83 transitions, 382 flow [2025-03-04 15:29:29,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:29:29,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:29:29,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2025-03-04 15:29:29,884 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6968085106382979 [2025-03-04 15:29:29,884 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 178 flow. Second operand 4 states and 131 transitions. [2025-03-04 15:29:29,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 83 transitions, 382 flow [2025-03-04 15:29:29,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 83 transitions, 371 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-04 15:29:29,886 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 196 flow [2025-03-04 15:29:29,886 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2025-03-04 15:29:29,887 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 13 predicate places. [2025-03-04 15:29:29,887 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 196 flow [2025-03-04 15:29:29,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:29,887 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:29,887 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:29:29,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 15:29:29,887 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-03-04 15:29:29,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:29,888 INFO L85 PathProgramCache]: Analyzing trace with hash -533524781, now seen corresponding path program 1 times [2025-03-04 15:29:29,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:29,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32921679] [2025-03-04 15:29:29,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:29,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:29,892 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 15:29:29,897 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 15:29:29,897 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:29,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:29,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:29,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:29,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32921679] [2025-03-04 15:29:29,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32921679] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:29:29,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:29:29,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:29:29,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099276245] [2025-03-04 15:29:29,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:29:29,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:29:29,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:29,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:29:29,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:29:29,941 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2025-03-04 15:29:29,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:29,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:29,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2025-03-04 15:29:29,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:30,205 INFO L124 PetriNetUnfolderBase]: 1708/2792 cut-off events. [2025-03-04 15:29:30,206 INFO L125 PetriNetUnfolderBase]: For 769/1064 co-relation queries the response was YES. [2025-03-04 15:29:30,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6051 conditions, 2792 events. 1708/2792 cut-off events. For 769/1064 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 15453 event pairs, 787 based on Foata normal form. 163/2838 useless extension candidates. Maximal degree in co-relation 6015. Up to 1698 conditions per place. [2025-03-04 15:29:30,224 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 69 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2025-03-04 15:29:30,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 88 transitions, 438 flow [2025-03-04 15:29:30,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:29:30,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:29:30,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2025-03-04 15:29:30,225 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6861702127659575 [2025-03-04 15:29:30,225 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 196 flow. Second operand 4 states and 129 transitions. [2025-03-04 15:29:30,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 88 transitions, 438 flow [2025-03-04 15:29:30,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 88 transitions, 429 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:29:30,228 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 222 flow [2025-03-04 15:29:30,228 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2025-03-04 15:29:30,229 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 17 predicate places. [2025-03-04 15:29:30,229 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 222 flow [2025-03-04 15:29:30,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:30,229 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:30,229 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:29:30,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 15:29:30,229 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-03-04 15:29:30,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:30,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1571530278, now seen corresponding path program 1 times [2025-03-04 15:29:30,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:30,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398759930] [2025-03-04 15:29:30,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:30,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:30,235 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 15:29:30,240 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 15:29:30,240 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:30,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:30,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:30,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:30,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398759930] [2025-03-04 15:29:30,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398759930] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:29:30,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:29:30,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:29:30,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395112805] [2025-03-04 15:29:30,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:29:30,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:29:30,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:30,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:29:30,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:29:30,315 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 47 [2025-03-04 15:29:30,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:30,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:30,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 47 [2025-03-04 15:29:30,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:30,494 INFO L124 PetriNetUnfolderBase]: 1059/1948 cut-off events. [2025-03-04 15:29:30,495 INFO L125 PetriNetUnfolderBase]: For 773/1030 co-relation queries the response was YES. [2025-03-04 15:29:30,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4364 conditions, 1948 events. 1059/1948 cut-off events. For 773/1030 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 11501 event pairs, 724 based on Foata normal form. 92/1904 useless extension candidates. Maximal degree in co-relation 4333. Up to 1469 conditions per place. [2025-03-04 15:29:30,508 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 37 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2025-03-04 15:29:30,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 58 transitions, 297 flow [2025-03-04 15:29:30,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:29:30,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:29:30,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2025-03-04 15:29:30,511 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2025-03-04 15:29:30,511 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 222 flow. Second operand 3 states and 90 transitions. [2025-03-04 15:29:30,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 58 transitions, 297 flow [2025-03-04 15:29:30,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 58 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:29:30,515 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 220 flow [2025-03-04 15:29:30,515 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2025-03-04 15:29:30,517 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 18 predicate places. [2025-03-04 15:29:30,517 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 220 flow [2025-03-04 15:29:30,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:30,517 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:30,518 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:29:30,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 15:29:30,518 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-03-04 15:29:30,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:30,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1952870713, now seen corresponding path program 1 times [2025-03-04 15:29:30,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:30,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342728514] [2025-03-04 15:29:30,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:30,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:30,527 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-04 15:29:30,534 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 15:29:30,535 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:30,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:30,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:29:30,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:30,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342728514] [2025-03-04 15:29:30,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342728514] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:29:30,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:29:30,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 15:29:30,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663610383] [2025-03-04 15:29:30,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:29:30,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 15:29:30,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:30,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 15:29:30,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 15:29:30,603 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2025-03-04 15:29:30,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:30,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:30,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2025-03-04 15:29:30,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:30,818 INFO L124 PetriNetUnfolderBase]: 1495/2340 cut-off events. [2025-03-04 15:29:30,818 INFO L125 PetriNetUnfolderBase]: For 918/1325 co-relation queries the response was YES. [2025-03-04 15:29:30,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5474 conditions, 2340 events. 1495/2340 cut-off events. For 918/1325 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12041 event pairs, 388 based on Foata normal form. 220/2436 useless extension candidates. Maximal degree in co-relation 5450. Up to 786 conditions per place. [2025-03-04 15:29:30,830 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 63 selfloop transitions, 8 changer transitions 0/87 dead transitions. [2025-03-04 15:29:30,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 87 transitions, 464 flow [2025-03-04 15:29:30,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 15:29:30,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 15:29:30,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2025-03-04 15:29:30,832 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5914893617021276 [2025-03-04 15:29:30,832 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 220 flow. Second operand 5 states and 139 transitions. [2025-03-04 15:29:30,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 87 transitions, 464 flow [2025-03-04 15:29:30,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 87 transitions, 460 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 15:29:30,839 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 230 flow [2025-03-04 15:29:30,839 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2025-03-04 15:29:30,840 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 19 predicate places. [2025-03-04 15:29:30,840 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 230 flow [2025-03-04 15:29:30,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:30,841 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:30,841 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-03-04 15:29:30,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-04 15:29:30,842 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-03-04 15:29:30,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:30,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1349669520, now seen corresponding path program 2 times [2025-03-04 15:29:30,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:30,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281347307] [2025-03-04 15:29:30,842 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:29:30,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:30,852 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-04 15:29:30,855 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-04 15:29:30,857 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:29:30,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:30,890 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 15:29:30,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:30,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281347307] [2025-03-04 15:29:30,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281347307] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:29:30,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581606357] [2025-03-04 15:29:30,891 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:29:30,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:29:30,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:29:30,893 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:29:30,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 15:29:30,938 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-04 15:29:30,945 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-04 15:29:30,945 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:29:30,945 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:30,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 15:29:30,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:29:30,971 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 15:29:30,972 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:29:30,991 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 15:29:30,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581606357] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:29:30,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:29:30,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-03-04 15:29:30,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950302377] [2025-03-04 15:29:30,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:29:30,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:29:30,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:30,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:29:30,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:29:30,997 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2025-03-04 15:29:30,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:30,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:30,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2025-03-04 15:29:30,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:31,147 INFO L124 PetriNetUnfolderBase]: 1059/1875 cut-off events. [2025-03-04 15:29:31,147 INFO L125 PetriNetUnfolderBase]: For 789/1046 co-relation queries the response was YES. [2025-03-04 15:29:31,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4472 conditions, 1875 events. 1059/1875 cut-off events. For 789/1046 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10595 event pairs, 724 based on Foata normal form. 92/1904 useless extension candidates. Maximal degree in co-relation 4446. Up to 1460 conditions per place. [2025-03-04 15:29:31,156 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 24 selfloop transitions, 15 changer transitions 0/56 dead transitions. [2025-03-04 15:29:31,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 56 transitions, 298 flow [2025-03-04 15:29:31,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:29:31,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:29:31,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2025-03-04 15:29:31,157 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5372340425531915 [2025-03-04 15:29:31,157 INFO L175 Difference]: Start difference. First operand has 67 places, 57 transitions, 230 flow. Second operand 4 states and 101 transitions. [2025-03-04 15:29:31,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 56 transitions, 298 flow [2025-03-04 15:29:31,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 56 transitions, 272 flow, removed 1 selfloop flow, removed 8 redundant places. [2025-03-04 15:29:31,160 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 224 flow [2025-03-04 15:29:31,160 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=224, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2025-03-04 15:29:31,161 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 13 predicate places. [2025-03-04 15:29:31,161 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 224 flow [2025-03-04 15:29:31,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:31,161 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:31,161 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:29:31,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-04 15:29:31,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:29:31,364 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-03-04 15:29:31,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:31,365 INFO L85 PathProgramCache]: Analyzing trace with hash 409450327, now seen corresponding path program 1 times [2025-03-04 15:29:31,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:31,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458018079] [2025-03-04 15:29:31,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:31,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:31,372 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 15:29:31,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 15:29:31,380 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:31,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:31,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:31,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:31,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458018079] [2025-03-04 15:29:31,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458018079] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:29:31,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898323135] [2025-03-04 15:29:31,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:31,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:29:31,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:29:31,497 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:29:31,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 15:29:31,540 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 15:29:31,558 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 15:29:31,558 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:31,558 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:31,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:29:31,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:29:31,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:29:31,648 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:29:31,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898323135] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:29:31,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:29:31,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2025-03-04 15:29:31,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214532300] [2025-03-04 15:29:31,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:29:31,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:29:31,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:31,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:29:31,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2025-03-04 15:29:31,665 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2025-03-04 15:29:31,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 224 flow. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:31,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:31,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2025-03-04 15:29:31,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:31,868 INFO L124 PetriNetUnfolderBase]: 1792/2636 cut-off events. [2025-03-04 15:29:31,869 INFO L125 PetriNetUnfolderBase]: For 1052/1528 co-relation queries the response was YES. [2025-03-04 15:29:31,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6271 conditions, 2636 events. 1792/2636 cut-off events. For 1052/1528 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12697 event pairs, 556 based on Foata normal form. 166/2596 useless extension candidates. Maximal degree in co-relation 6195. Up to 1162 conditions per place. [2025-03-04 15:29:31,881 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 60 selfloop transitions, 10 changer transitions 3/87 dead transitions. [2025-03-04 15:29:31,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 87 transitions, 476 flow [2025-03-04 15:29:31,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:29:31,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:29:31,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2025-03-04 15:29:31,882 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2025-03-04 15:29:31,882 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 224 flow. Second operand 6 states and 153 transitions. [2025-03-04 15:29:31,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 87 transitions, 476 flow [2025-03-04 15:29:31,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 87 transitions, 446 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:29:31,885 INFO L231 Difference]: Finished difference. Result has 64 places, 56 transitions, 229 flow [2025-03-04 15:29:31,885 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=229, PETRI_PLACES=64, PETRI_TRANSITIONS=56} [2025-03-04 15:29:31,885 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 16 predicate places. [2025-03-04 15:29:31,885 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 56 transitions, 229 flow [2025-03-04 15:29:31,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:31,886 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:31,886 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:29:31,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-04 15:29:32,086 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 [2025-03-04 15:29:32,086 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-03-04 15:29:32,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:32,087 INFO L85 PathProgramCache]: Analyzing trace with hash -245645085, now seen corresponding path program 1 times [2025-03-04 15:29:32,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:32,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605878864] [2025-03-04 15:29:32,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:32,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:32,091 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 15:29:32,099 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 15:29:32,099 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:32,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:32,155 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:29:32,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:32,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605878864] [2025-03-04 15:29:32,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605878864] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:29:32,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131126704] [2025-03-04 15:29:32,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:32,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:29:32,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:29:32,157 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:29:32,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 15:29:32,194 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 15:29:32,204 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 15:29:32,204 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:32,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:32,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-04 15:29:32,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:29:32,305 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:32,306 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:29:32,403 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:32,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131126704] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:29:32,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:29:32,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2025-03-04 15:29:32,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535569844] [2025-03-04 15:29:32,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:29:32,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-04 15:29:32,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:32,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-04 15:29:32,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2025-03-04 15:29:32,493 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2025-03-04 15:29:32,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 229 flow. Second operand has 19 states, 19 states have (on average 17.0) internal successors, (323), 19 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:32,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:32,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2025-03-04 15:29:32,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:33,209 INFO L124 PetriNetUnfolderBase]: 3699/5784 cut-off events. [2025-03-04 15:29:33,209 INFO L125 PetriNetUnfolderBase]: For 4006/4653 co-relation queries the response was YES. [2025-03-04 15:29:33,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15224 conditions, 5784 events. 3699/5784 cut-off events. For 4006/4653 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 34093 event pairs, 618 based on Foata normal form. 329/5978 useless extension candidates. Maximal degree in co-relation 8938. Up to 860 conditions per place. [2025-03-04 15:29:33,239 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 153 selfloop transitions, 23 changer transitions 6/194 dead transitions. [2025-03-04 15:29:33,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 194 transitions, 1089 flow [2025-03-04 15:29:33,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-04 15:29:33,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-04 15:29:33,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 361 transitions. [2025-03-04 15:29:33,244 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5486322188449848 [2025-03-04 15:29:33,244 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 229 flow. Second operand 14 states and 361 transitions. [2025-03-04 15:29:33,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 194 transitions, 1089 flow [2025-03-04 15:29:33,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 194 transitions, 1073 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:29:33,254 INFO L231 Difference]: Finished difference. Result has 73 places, 60 transitions, 289 flow [2025-03-04 15:29:33,254 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=289, PETRI_PLACES=73, PETRI_TRANSITIONS=60} [2025-03-04 15:29:33,255 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 25 predicate places. [2025-03-04 15:29:33,255 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 60 transitions, 289 flow [2025-03-04 15:29:33,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 17.0) internal successors, (323), 19 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:33,257 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:33,257 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:29:33,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-04 15:29:33,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-04 15:29:33,457 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-03-04 15:29:33,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:33,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1150309786, now seen corresponding path program 1 times [2025-03-04 15:29:33,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:33,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242888432] [2025-03-04 15:29:33,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:33,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:33,462 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-04 15:29:33,467 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 15:29:33,467 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:33,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:33,546 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-04 15:29:33,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:33,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242888432] [2025-03-04 15:29:33,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242888432] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:29:33,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138662667] [2025-03-04 15:29:33,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:33,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:29:33,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:29:33,548 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:29:33,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 15:29:33,587 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-04 15:29:33,598 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 15:29:33,598 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:33,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:33,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-04 15:29:33,600 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:29:33,655 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-04 15:29:33,655 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:29:33,717 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-04 15:29:33,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138662667] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:29:33,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:29:33,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2025-03-04 15:29:33,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480848962] [2025-03-04 15:29:33,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:29:33,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-04 15:29:33,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:33,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-04 15:29:33,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2025-03-04 15:29:33,804 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2025-03-04 15:29:33,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 60 transitions, 289 flow. Second operand has 16 states, 16 states have (on average 19.6875) internal successors, (315), 16 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:33,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:33,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2025-03-04 15:29:33,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:34,188 INFO L124 PetriNetUnfolderBase]: 2386/3961 cut-off events. [2025-03-04 15:29:34,188 INFO L125 PetriNetUnfolderBase]: For 3685/3867 co-relation queries the response was YES. [2025-03-04 15:29:34,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10957 conditions, 3961 events. 2386/3961 cut-off events. For 3685/3867 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 23090 event pairs, 1665 based on Foata normal form. 70/3933 useless extension candidates. Maximal degree in co-relation 8715. Up to 2667 conditions per place. [2025-03-04 15:29:34,211 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 29 selfloop transitions, 10 changer transitions 35/89 dead transitions. [2025-03-04 15:29:34,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 89 transitions, 547 flow [2025-03-04 15:29:34,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 15:29:34,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-04 15:29:34,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2025-03-04 15:29:34,212 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5398936170212766 [2025-03-04 15:29:34,213 INFO L175 Difference]: Start difference. First operand has 73 places, 60 transitions, 289 flow. Second operand 8 states and 203 transitions. [2025-03-04 15:29:34,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 89 transitions, 547 flow [2025-03-04 15:29:34,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 89 transitions, 503 flow, removed 4 selfloop flow, removed 7 redundant places. [2025-03-04 15:29:34,219 INFO L231 Difference]: Finished difference. Result has 75 places, 54 transitions, 247 flow [2025-03-04 15:29:34,219 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=247, PETRI_PLACES=75, PETRI_TRANSITIONS=54} [2025-03-04 15:29:34,219 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 27 predicate places. [2025-03-04 15:29:34,219 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 54 transitions, 247 flow [2025-03-04 15:29:34,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.6875) internal successors, (315), 16 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:34,219 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:34,220 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-04 15:29:34,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-04 15:29:34,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:29:34,420 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-03-04 15:29:34,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:34,420 INFO L85 PathProgramCache]: Analyzing trace with hash -808155736, now seen corresponding path program 1 times [2025-03-04 15:29:34,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:34,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824389234] [2025-03-04 15:29:34,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:34,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:34,429 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 15:29:34,435 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 15:29:34,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:34,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:34,471 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-04 15:29:34,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:34,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824389234] [2025-03-04 15:29:34,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824389234] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:29:34,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564448975] [2025-03-04 15:29:34,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:34,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:29:34,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:29:34,474 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:29:34,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 15:29:34,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 15:29:34,522 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 15:29:34,522 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:34,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:34,523 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:29:34,524 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:29:34,549 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-04 15:29:34,549 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:29:34,577 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-04 15:29:34,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564448975] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:29:34,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:29:34,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-04 15:29:34,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156340381] [2025-03-04 15:29:34,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:29:34,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-04 15:29:34,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:34,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-04 15:29:34,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-04 15:29:34,592 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2025-03-04 15:29:34,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 54 transitions, 247 flow. Second operand has 12 states, 12 states have (on average 19.916666666666668) internal successors, (239), 12 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:34,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:34,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2025-03-04 15:29:34,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:35,144 INFO L124 PetriNetUnfolderBase]: 4140/6580 cut-off events. [2025-03-04 15:29:35,144 INFO L125 PetriNetUnfolderBase]: For 5606/6729 co-relation queries the response was YES. [2025-03-04 15:29:35,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17848 conditions, 6580 events. 4140/6580 cut-off events. For 5606/6729 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 37356 event pairs, 847 based on Foata normal form. 543/7100 useless extension candidates. Maximal degree in co-relation 17773. Up to 2278 conditions per place. [2025-03-04 15:29:35,171 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 169 selfloop transitions, 13 changer transitions 0/195 dead transitions. [2025-03-04 15:29:35,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 195 transitions, 1149 flow [2025-03-04 15:29:35,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 15:29:35,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 15:29:35,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 328 transitions. [2025-03-04 15:29:35,174 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6978723404255319 [2025-03-04 15:29:35,174 INFO L175 Difference]: Start difference. First operand has 75 places, 54 transitions, 247 flow. Second operand 10 states and 328 transitions. [2025-03-04 15:29:35,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 195 transitions, 1149 flow [2025-03-04 15:29:35,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 195 transitions, 1089 flow, removed 20 selfloop flow, removed 8 redundant places. [2025-03-04 15:29:35,185 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 305 flow [2025-03-04 15:29:35,185 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=305, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2025-03-04 15:29:35,185 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 26 predicate places. [2025-03-04 15:29:35,185 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 305 flow [2025-03-04 15:29:35,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.916666666666668) internal successors, (239), 12 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:35,186 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:35,186 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:29:35,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-04 15:29:35,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:29:35,387 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-03-04 15:29:35,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:35,388 INFO L85 PathProgramCache]: Analyzing trace with hash -591619271, now seen corresponding path program 2 times [2025-03-04 15:29:35,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:35,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357726966] [2025-03-04 15:29:35,388 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:29:35,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:35,393 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-03-04 15:29:35,397 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-04 15:29:35,397 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:29:35,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:35,430 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-04 15:29:35,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:35,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357726966] [2025-03-04 15:29:35,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357726966] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:29:35,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:29:35,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 15:29:35,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399862002] [2025-03-04 15:29:35,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:29:35,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 15:29:35,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:35,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 15:29:35,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 15:29:35,438 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2025-03-04 15:29:35,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 305 flow. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:35,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:35,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2025-03-04 15:29:35,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:35,850 INFO L124 PetriNetUnfolderBase]: 5013/7373 cut-off events. [2025-03-04 15:29:35,851 INFO L125 PetriNetUnfolderBase]: For 9052/9548 co-relation queries the response was YES. [2025-03-04 15:29:35,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22105 conditions, 7373 events. 5013/7373 cut-off events. For 9052/9548 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 40358 event pairs, 573 based on Foata normal form. 166/7347 useless extension candidates. Maximal degree in co-relation 22036. Up to 2995 conditions per place. [2025-03-04 15:29:35,886 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 83 selfloop transitions, 7 changer transitions 0/104 dead transitions. [2025-03-04 15:29:35,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 104 transitions, 707 flow [2025-03-04 15:29:35,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:29:35,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:29:35,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2025-03-04 15:29:35,888 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6329787234042553 [2025-03-04 15:29:35,888 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 305 flow. Second operand 4 states and 119 transitions. [2025-03-04 15:29:35,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 104 transitions, 707 flow [2025-03-04 15:29:35,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 104 transitions, 678 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-03-04 15:29:35,900 INFO L231 Difference]: Finished difference. Result has 74 places, 62 transitions, 304 flow [2025-03-04 15:29:35,901 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=304, PETRI_PLACES=74, PETRI_TRANSITIONS=62} [2025-03-04 15:29:35,901 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 26 predicate places. [2025-03-04 15:29:35,901 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 62 transitions, 304 flow [2025-03-04 15:29:35,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:35,902 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:35,902 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:29:35,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-04 15:29:35,902 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-03-04 15:29:35,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:35,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1160327858, now seen corresponding path program 1 times [2025-03-04 15:29:35,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:35,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276938154] [2025-03-04 15:29:35,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:35,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:35,908 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-04 15:29:35,912 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-04 15:29:35,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:35,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:35,971 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-04 15:29:35,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:35,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276938154] [2025-03-04 15:29:35,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276938154] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:29:35,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82202246] [2025-03-04 15:29:35,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:35,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:29:35,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:29:35,974 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:29:35,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-04 15:29:36,014 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-04 15:29:36,026 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-04 15:29:36,027 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:36,027 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:36,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-04 15:29:36,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:29:36,150 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:36,151 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:29:36,296 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:36,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82202246] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:29:36,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:29:36,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 24 [2025-03-04 15:29:36,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397481575] [2025-03-04 15:29:36,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:29:36,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-04 15:29:36,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:36,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-04 15:29:36,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2025-03-04 15:29:36,452 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2025-03-04 15:29:36,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 62 transitions, 304 flow. Second operand has 24 states, 24 states have (on average 17.041666666666668) internal successors, (409), 24 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:36,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:36,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2025-03-04 15:29:36,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:37,819 INFO L124 PetriNetUnfolderBase]: 10457/15560 cut-off events. [2025-03-04 15:29:37,819 INFO L125 PetriNetUnfolderBase]: For 19913/20985 co-relation queries the response was YES. [2025-03-04 15:29:37,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47782 conditions, 15560 events. 10457/15560 cut-off events. For 19913/20985 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 96729 event pairs, 2987 based on Foata normal form. 360/15807 useless extension candidates. Maximal degree in co-relation 38744. Up to 4258 conditions per place. [2025-03-04 15:29:37,883 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 222 selfloop transitions, 23 changer transitions 9/268 dead transitions. [2025-03-04 15:29:37,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 268 transitions, 1818 flow [2025-03-04 15:29:37,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-04 15:29:37,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-04 15:29:37,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 418 transitions. [2025-03-04 15:29:37,885 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.523153942428035 [2025-03-04 15:29:37,885 INFO L175 Difference]: Start difference. First operand has 74 places, 62 transitions, 304 flow. Second operand 17 states and 418 transitions. [2025-03-04 15:29:37,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 268 transitions, 1818 flow [2025-03-04 15:29:37,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 268 transitions, 1788 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:29:37,921 INFO L231 Difference]: Finished difference. Result has 90 places, 70 transitions, 387 flow [2025-03-04 15:29:37,921 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=387, PETRI_PLACES=90, PETRI_TRANSITIONS=70} [2025-03-04 15:29:37,922 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 42 predicate places. [2025-03-04 15:29:37,922 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 70 transitions, 387 flow [2025-03-04 15:29:37,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 17.041666666666668) internal successors, (409), 24 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:37,922 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:37,922 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:29:37,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-04 15:29:38,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-04 15:29:38,123 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-03-04 15:29:38,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:38,124 INFO L85 PathProgramCache]: Analyzing trace with hash -808317279, now seen corresponding path program 2 times [2025-03-04 15:29:38,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:38,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254074075] [2025-03-04 15:29:38,124 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:29:38,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:38,129 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-03-04 15:29:38,132 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-03-04 15:29:38,133 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:29:38,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:38,176 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-04 15:29:38,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:38,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254074075] [2025-03-04 15:29:38,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254074075] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:29:38,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39240919] [2025-03-04 15:29:38,177 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:29:38,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:29:38,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:29:38,179 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:29:38,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-04 15:29:38,222 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-03-04 15:29:38,236 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-03-04 15:29:38,236 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:29:38,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:38,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 15:29:38,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:29:38,273 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-04 15:29:38,273 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:29:38,306 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-04 15:29:38,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39240919] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:29:38,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:29:38,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-03-04 15:29:38,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004250223] [2025-03-04 15:29:38,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:29:38,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 15:29:38,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:38,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 15:29:38,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 15:29:38,313 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2025-03-04 15:29:38,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 70 transitions, 387 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:38,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:38,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2025-03-04 15:29:38,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:39,267 INFO L124 PetriNetUnfolderBase]: 10364/15533 cut-off events. [2025-03-04 15:29:39,267 INFO L125 PetriNetUnfolderBase]: For 20800/22017 co-relation queries the response was YES. [2025-03-04 15:29:39,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48450 conditions, 15533 events. 10364/15533 cut-off events. For 20800/22017 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 96697 event pairs, 2630 based on Foata normal form. 225/15711 useless extension candidates. Maximal degree in co-relation 39409. Up to 6270 conditions per place. [2025-03-04 15:29:39,352 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 82 selfloop transitions, 14 changer transitions 2/112 dead transitions. [2025-03-04 15:29:39,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 112 transitions, 789 flow [2025-03-04 15:29:39,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 15:29:39,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 15:29:39,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2025-03-04 15:29:39,356 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5829787234042553 [2025-03-04 15:29:39,357 INFO L175 Difference]: Start difference. First operand has 90 places, 70 transitions, 387 flow. Second operand 5 states and 137 transitions. [2025-03-04 15:29:39,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 112 transitions, 789 flow [2025-03-04 15:29:39,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 112 transitions, 754 flow, removed 4 selfloop flow, removed 8 redundant places. [2025-03-04 15:29:39,404 INFO L231 Difference]: Finished difference. Result has 86 places, 70 transitions, 390 flow [2025-03-04 15:29:39,404 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=390, PETRI_PLACES=86, PETRI_TRANSITIONS=70} [2025-03-04 15:29:39,405 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 38 predicate places. [2025-03-04 15:29:39,405 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 70 transitions, 390 flow [2025-03-04 15:29:39,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:39,405 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:39,405 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-04 15:29:39,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-04 15:29:39,605 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,SelfDestructingSolverStorable14 [2025-03-04 15:29:39,606 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-03-04 15:29:39,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:39,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1121974929, now seen corresponding path program 2 times [2025-03-04 15:29:39,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:39,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042681044] [2025-03-04 15:29:39,607 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:29:39,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:39,619 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-03-04 15:29:39,623 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-03-04 15:29:39,624 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:29:39,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:39,682 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-03-04 15:29:39,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:39,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042681044] [2025-03-04 15:29:39,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042681044] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:29:39,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394897765] [2025-03-04 15:29:39,682 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:29:39,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:29:39,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:29:39,685 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:29:39,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-04 15:29:39,727 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-03-04 15:29:39,741 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-03-04 15:29:39,741 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:29:39,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:39,742 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 15:29:39,743 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:29:39,777 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-03-04 15:29:39,777 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:29:39,816 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-03-04 15:29:39,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394897765] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:29:39,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:29:39,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-03-04 15:29:39,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112095303] [2025-03-04 15:29:39,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:29:39,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 15:29:39,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:39,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 15:29:39,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 15:29:39,829 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2025-03-04 15:29:39,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 70 transitions, 390 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:39,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:39,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2025-03-04 15:29:39,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:40,984 INFO L124 PetriNetUnfolderBase]: 11128/17578 cut-off events. [2025-03-04 15:29:40,984 INFO L125 PetriNetUnfolderBase]: For 33892/35835 co-relation queries the response was YES. [2025-03-04 15:29:41,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54604 conditions, 17578 events. 11128/17578 cut-off events. For 33892/35835 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 114279 event pairs, 2816 based on Foata normal form. 964/18430 useless extension candidates. Maximal degree in co-relation 42089. Up to 6822 conditions per place. [2025-03-04 15:29:41,042 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 0 selfloop transitions, 0 changer transitions 114/114 dead transitions. [2025-03-04 15:29:41,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 114 transitions, 824 flow [2025-03-04 15:29:41,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 15:29:41,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 15:29:41,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2025-03-04 15:29:41,043 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5914893617021276 [2025-03-04 15:29:41,043 INFO L175 Difference]: Start difference. First operand has 86 places, 70 transitions, 390 flow. Second operand 5 states and 139 transitions. [2025-03-04 15:29:41,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 114 transitions, 824 flow [2025-03-04 15:29:41,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 114 transitions, 778 flow, removed 2 selfloop flow, removed 7 redundant places. [2025-03-04 15:29:41,106 INFO L231 Difference]: Finished difference. Result has 82 places, 0 transitions, 0 flow [2025-03-04 15:29:41,106 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=82, PETRI_TRANSITIONS=0} [2025-03-04 15:29:41,107 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 34 predicate places. [2025-03-04 15:29:41,107 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 0 transitions, 0 flow [2025-03-04 15:29:41,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:41,108 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2025-03-04 15:29:41,109 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2025-03-04 15:29:41,109 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2025-03-04 15:29:41,109 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2025-03-04 15:29:41,109 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2025-03-04 15:29:41,109 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2025-03-04 15:29:41,109 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2025-03-04 15:29:41,109 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2025-03-04 15:29:41,109 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2025-03-04 15:29:41,109 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2025-03-04 15:29:41,109 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2025-03-04 15:29:41,109 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2025-03-04 15:29:41,109 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2025-03-04 15:29:41,109 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2025-03-04 15:29:41,109 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2025-03-04 15:29:41,109 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2025-03-04 15:29:41,109 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2025-03-04 15:29:41,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-04 15:29:41,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-04 15:29:41,310 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:29:41,313 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-04 15:29:41,313 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 15:29:41,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 03:29:41 BasicIcfg [2025-03-04 15:29:41,316 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 15:29:41,317 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 15:29:41,317 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 15:29:41,317 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 15:29:41,317 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:29:27" (3/4) ... [2025-03-04 15:29:41,318 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-04 15:29:41,319 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-04 15:29:41,319 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-04 15:29:41,320 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread3 [2025-03-04 15:29:41,322 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 68 nodes and edges [2025-03-04 15:29:41,322 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2025-03-04 15:29:41,323 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2025-03-04 15:29:41,323 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-04 15:29:41,379 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-04 15:29:41,380 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-04 15:29:41,380 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 15:29:41,381 INFO L158 Benchmark]: Toolchain (without parser) took 14472.25ms. Allocated memory was 142.6MB in the beginning and 1.0GB in the end (delta: 864.0MB). Free memory was 111.3MB in the beginning and 345.8MB in the end (delta: -234.5MB). Peak memory consumption was 628.9MB. Max. memory is 16.1GB. [2025-03-04 15:29:41,381 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 201.3MB. Free memory is still 127.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:29:41,382 INFO L158 Benchmark]: CACSL2BoogieTranslator took 207.78ms. Allocated memory is still 142.6MB. Free memory was 111.3MB in the beginning and 99.8MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 15:29:41,382 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.63ms. Allocated memory is still 142.6MB. Free memory was 99.8MB in the beginning and 98.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:29:41,382 INFO L158 Benchmark]: Boogie Preprocessor took 39.42ms. Allocated memory is still 142.6MB. Free memory was 98.1MB in the beginning and 96.2MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 15:29:41,383 INFO L158 Benchmark]: IcfgBuilder took 530.02ms. Allocated memory is still 142.6MB. Free memory was 96.2MB in the beginning and 56.2MB in the end (delta: 40.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-04 15:29:41,383 INFO L158 Benchmark]: TraceAbstraction took 13590.66ms. Allocated memory was 142.6MB in the beginning and 1.0GB in the end (delta: 864.0MB). Free memory was 55.2MB in the beginning and 352.2MB in the end (delta: -297.0MB). Peak memory consumption was 779.9MB. Max. memory is 16.1GB. [2025-03-04 15:29:41,384 INFO L158 Benchmark]: Witness Printer took 63.29ms. Allocated memory is still 1.0GB. Free memory was 352.2MB in the beginning and 345.8MB in the end (delta: 6.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 15:29:41,385 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 201.3MB. Free memory is still 127.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 207.78ms. Allocated memory is still 142.6MB. Free memory was 111.3MB in the beginning and 99.8MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.63ms. Allocated memory is still 142.6MB. Free memory was 99.8MB in the beginning and 98.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.42ms. Allocated memory is still 142.6MB. Free memory was 98.1MB in the beginning and 96.2MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 530.02ms. Allocated memory is still 142.6MB. Free memory was 96.2MB in the beginning and 56.2MB in the end (delta: 40.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 13590.66ms. Allocated memory was 142.6MB in the beginning and 1.0GB in the end (delta: 864.0MB). Free memory was 55.2MB in the beginning and 352.2MB in the end (delta: -297.0MB). Peak memory consumption was 779.9MB. Max. memory is 16.1GB. * Witness Printer took 63.29ms. Allocated memory is still 1.0GB. Free memory was 352.2MB in the beginning and 345.8MB in the end (delta: 6.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 74 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 13.5s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1359 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1274 mSDsluCounter, 838 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 800 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4701 IncrementalHoareTripleChecker+Invalid, 4747 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 38 mSDtfsCounter, 4701 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 436 GetRequests, 279 SyntacticMatches, 7 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=390occurred in iteration=15, InterpolantAutomatonStates: 109, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 441 NumberOfCodeBlocks, 417 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 571 ConstructedInterpolants, 0 QuantifiedInterpolants, 1799 SizeOfPredicates, 37 NumberOfNonLiveVariables, 1136 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 34 InterpolantComputations, 8 PerfectInterpolantSequences, 346/493 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-04 15:29:41,404 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE