./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-dec-subseq.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 0f0e249de6560bdff430500b6d1ad159bf4a19253ccf183d061fafc41fe4114b --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:45:43,117 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:45:43,173 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:45:43,180 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:45:43,180 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:45:43,199 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:45:43,200 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:45:43,201 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:45:43,201 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:45:43,201 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:45:43,202 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:45:43,202 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:45:43,202 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:45:43,202 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:45:43,202 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:45:43,203 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:45:43,203 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:45:43,203 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:45:43,203 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:45:43,203 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:45:43,203 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:45:43,203 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:45:43,203 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:45:43,203 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:45:43,204 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:45:43,204 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:45:43,204 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:45:43,204 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:45:43,204 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:45:43,204 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:45:43,204 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:45:43,204 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:45:43,205 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:45:43,205 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:45:43,205 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:45:43,205 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:45:43,205 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:45:43,205 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:45:43,205 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:45:43,205 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:45:43,205 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:45:43,205 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:45:43,205 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:45:43,206 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:45:43,206 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:45:43,206 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 -> 0f0e249de6560bdff430500b6d1ad159bf4a19253ccf183d061fafc41fe4114b [2025-03-17 19:45:43,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:45:43,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:45:43,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:45:43,420 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:45:43,421 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:45:43,421 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c [2025-03-17 19:45:44,544 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07680e850/63a9e107dafa45c5becbe8b73a7c4043/FLAGde50f7664 [2025-03-17 19:45:44,778 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:45:44,779 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c [2025-03-17 19:45:44,789 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07680e850/63a9e107dafa45c5becbe8b73a7c4043/FLAGde50f7664 [2025-03-17 19:45:45,111 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07680e850/63a9e107dafa45c5becbe8b73a7c4043 [2025-03-17 19:45:45,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:45:45,114 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:45:45,115 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:45:45,115 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:45:45,118 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:45:45,119 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:45:45" (1/1) ... [2025-03-17 19:45:45,119 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58e16f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:45, skipping insertion in model container [2025-03-17 19:45:45,119 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:45:45" (1/1) ... [2025-03-17 19:45:45,130 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:45:45,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:45:45,253 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:45:45,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:45:45,286 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:45:45,286 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:45 WrapperNode [2025-03-17 19:45:45,287 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:45:45,287 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:45:45,287 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:45:45,288 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:45:45,292 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:45" (1/1) ... [2025-03-17 19:45:45,299 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:45" (1/1) ... [2025-03-17 19:45:45,314 INFO L138 Inliner]: procedures = 23, calls = 36, calls flagged for inlining = 12, calls inlined = 14, statements flattened = 187 [2025-03-17 19:45:45,315 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:45:45,315 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:45:45,315 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:45:45,315 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:45:45,321 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:45" (1/1) ... [2025-03-17 19:45:45,321 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:45" (1/1) ... [2025-03-17 19:45:45,323 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:45" (1/1) ... [2025-03-17 19:45:45,343 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-03-17 19:45:45,343 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:45" (1/1) ... [2025-03-17 19:45:45,343 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:45" (1/1) ... [2025-03-17 19:45:45,348 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:45" (1/1) ... [2025-03-17 19:45:45,349 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:45" (1/1) ... [2025-03-17 19:45:45,350 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:45" (1/1) ... [2025-03-17 19:45:45,350 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:45" (1/1) ... [2025-03-17 19:45:45,353 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:45:45,354 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:45:45,354 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:45:45,354 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:45:45,355 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:45" (1/1) ... [2025-03-17 19:45:45,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:45:45,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:45:45,378 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 19:45:45,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 19:45:45,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:45:45,401 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 19:45:45,401 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 19:45:45,401 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 19:45:45,401 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 19:45:45,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:45:45,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 19:45:45,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 19:45:45,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 19:45:45,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 19:45:45,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 19:45:45,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 19:45:45,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:45:45,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:45:45,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 19:45:45,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 19:45:45,403 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 19:45:45,489 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:45:45,491 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:45:45,792 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:45:45,793 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:45:45,983 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:45:45,984 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:45:45,984 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:45:45 BoogieIcfgContainer [2025-03-17 19:45:45,984 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:45:45,986 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:45:45,986 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:45:45,989 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:45:45,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:45:45" (1/3) ... [2025-03-17 19:45:45,991 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c0791d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:45:45, skipping insertion in model container [2025-03-17 19:45:45,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:45" (2/3) ... [2025-03-17 19:45:45,991 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c0791d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:45:45, skipping insertion in model container [2025-03-17 19:45:45,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:45:45" (3/3) ... [2025-03-17 19:45:45,992 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-dec-subseq.wvr.c [2025-03-17 19:45:46,004 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:45:46,005 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-dec-subseq.wvr.c that has 3 procedures, 39 locations, 1 initial locations, 4 loop locations, and 10 error locations. [2025-03-17 19:45:46,005 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:45:46,061 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-17 19:45:46,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 43 transitions, 100 flow [2025-03-17 19:45:46,113 INFO L124 PetriNetUnfolderBase]: 5/41 cut-off events. [2025-03-17 19:45:46,114 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 19:45:46,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 41 events. 5/41 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 90 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2025-03-17 19:45:46,116 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 43 transitions, 100 flow [2025-03-17 19:45:46,119 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 39 transitions, 87 flow [2025-03-17 19:45:46,125 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:45:46,132 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;@7b935f1e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:45:46,133 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-03-17 19:45:46,135 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:45:46,135 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-17 19:45:46,136 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:45:46,136 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:46,136 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 19:45:46,136 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-03-17 19:45:46,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:46,140 INFO L85 PathProgramCache]: Analyzing trace with hash 510001, now seen corresponding path program 1 times [2025-03-17 19:45:46,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:46,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168236854] [2025-03-17 19:45:46,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:46,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:46,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:45:46,217 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:45:46,218 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:46,218 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:46,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:46,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:46,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168236854] [2025-03-17 19:45:46,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168236854] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:45:46,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:45:46,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:45:46,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629275380] [2025-03-17 19:45:46,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:45:46,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:45:46,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:46,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:45:46,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:45:46,365 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2025-03-17 19:45:46,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:46,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:46,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2025-03-17 19:45:46,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:46,515 INFO L124 PetriNetUnfolderBase]: 237/406 cut-off events. [2025-03-17 19:45:46,515 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2025-03-17 19:45:46,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 406 events. 237/406 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1702 event pairs, 171 based on Foata normal form. 2/291 useless extension candidates. Maximal degree in co-relation 757. Up to 391 conditions per place. [2025-03-17 19:45:46,521 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 31 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2025-03-17 19:45:46,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 43 transitions, 171 flow [2025-03-17 19:45:46,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:45:46,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:45:46,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2025-03-17 19:45:46,532 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4186046511627907 [2025-03-17 19:45:46,533 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 87 flow. Second operand 4 states and 72 transitions. [2025-03-17 19:45:46,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 43 transitions, 171 flow [2025-03-17 19:45:46,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 43 transitions, 166 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:45:46,539 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 138 flow [2025-03-17 19:45:46,540 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2025-03-17 19:45:46,543 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2025-03-17 19:45:46,543 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 138 flow [2025-03-17 19:45:46,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:46,543 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:46,544 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-17 19:45:46,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:45:46,544 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-03-17 19:45:46,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:46,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1986002999, now seen corresponding path program 1 times [2025-03-17 19:45:46,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:46,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673149878] [2025-03-17 19:45:46,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:46,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:46,555 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:45:46,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:45:46,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:46,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:46,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:46,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:46,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673149878] [2025-03-17 19:45:46,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673149878] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:45:46,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964344586] [2025-03-17 19:45:46,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:46,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:46,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:45:46,689 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:45:46,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 19:45:46,732 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:45:46,742 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:45:46,742 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:46,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:46,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:45:46,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:45:46,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:46,780 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:45:46,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964344586] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:45:46,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:45:46,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-17 19:45:46,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180536723] [2025-03-17 19:45:46,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:45:46,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:45:46,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:46,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:45:46,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:45:46,802 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2025-03-17 19:45:46,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:46,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:46,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2025-03-17 19:45:46,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:46,969 INFO L124 PetriNetUnfolderBase]: 237/404 cut-off events. [2025-03-17 19:45:46,969 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2025-03-17 19:45:46,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 845 conditions, 404 events. 237/404 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1683 event pairs, 171 based on Foata normal form. 2/292 useless extension candidates. Maximal degree in co-relation 795. Up to 381 conditions per place. [2025-03-17 19:45:46,972 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 24 selfloop transitions, 12 changer transitions 0/41 dead transitions. [2025-03-17 19:45:46,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 41 transitions, 202 flow [2025-03-17 19:45:46,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:45:46,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:45:46,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 80 transitions. [2025-03-17 19:45:46,974 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.31007751937984496 [2025-03-17 19:45:46,974 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 138 flow. Second operand 6 states and 80 transitions. [2025-03-17 19:45:46,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 41 transitions, 202 flow [2025-03-17 19:45:46,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 202 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:45:46,976 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 154 flow [2025-03-17 19:45:46,976 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=154, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2025-03-17 19:45:46,976 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2025-03-17 19:45:46,976 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 154 flow [2025-03-17 19:45:46,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:46,977 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:46,977 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-17 19:45:46,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 19:45:47,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:47,177 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-03-17 19:45:47,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:47,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1436550398, now seen corresponding path program 1 times [2025-03-17 19:45:47,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:47,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039491056] [2025-03-17 19:45:47,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:47,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:47,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:45:47,195 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:45:47,198 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:47,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:47,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:47,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:47,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039491056] [2025-03-17 19:45:47,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039491056] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:45:47,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276580271] [2025-03-17 19:45:47,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:47,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:47,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:45:47,291 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:45:47,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 19:45:47,330 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:45:47,341 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:45:47,341 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:47,341 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:47,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:45:47,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:45:47,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:47,365 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:45:47,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:47,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276580271] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:45:47,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:45:47,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-17 19:45:47,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159643638] [2025-03-17 19:45:47,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:45:47,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 19:45:47,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:47,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 19:45:47,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:45:47,415 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2025-03-17 19:45:47,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 154 flow. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:47,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:47,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2025-03-17 19:45:47,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:47,558 INFO L124 PetriNetUnfolderBase]: 243/428 cut-off events. [2025-03-17 19:45:47,558 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2025-03-17 19:45:47,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 428 events. 243/428 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1846 event pairs, 171 based on Foata normal form. 6/319 useless extension candidates. Maximal degree in co-relation 797. Up to 392 conditions per place. [2025-03-17 19:45:47,562 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 29 selfloop transitions, 25 changer transitions 0/59 dead transitions. [2025-03-17 19:45:47,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 59 transitions, 376 flow [2025-03-17 19:45:47,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:45:47,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:45:47,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2025-03-17 19:45:47,565 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3023255813953488 [2025-03-17 19:45:47,565 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 154 flow. Second operand 10 states and 130 transitions. [2025-03-17 19:45:47,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 59 transitions, 376 flow [2025-03-17 19:45:47,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 59 transitions, 318 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-03-17 19:45:47,569 INFO L231 Difference]: Finished difference. Result has 52 places, 59 transitions, 294 flow [2025-03-17 19:45:47,570 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=294, PETRI_PLACES=52, PETRI_TRANSITIONS=59} [2025-03-17 19:45:47,571 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 11 predicate places. [2025-03-17 19:45:47,571 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 59 transitions, 294 flow [2025-03-17 19:45:47,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:47,571 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:47,571 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:45:47,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 19:45:47,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-17 19:45:47,776 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-03-17 19:45:47,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:47,776 INFO L85 PathProgramCache]: Analyzing trace with hash -268520528, now seen corresponding path program 1 times [2025-03-17 19:45:47,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:47,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197258838] [2025-03-17 19:45:47,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:47,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:47,782 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:45:47,786 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:45:47,786 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:47,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:47,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:47,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:47,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197258838] [2025-03-17 19:45:47,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197258838] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:45:47,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:45:47,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 19:45:47,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762290623] [2025-03-17 19:45:47,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:45:47,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:45:47,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:47,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:45:47,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:45:47,856 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2025-03-17 19:45:47,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 59 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:47,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:47,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2025-03-17 19:45:47,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:47,939 INFO L124 PetriNetUnfolderBase]: 371/647 cut-off events. [2025-03-17 19:45:47,939 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2025-03-17 19:45:47,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1400 conditions, 647 events. 371/647 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3051 event pairs, 118 based on Foata normal form. 0/492 useless extension candidates. Maximal degree in co-relation 1333. Up to 347 conditions per place. [2025-03-17 19:45:47,943 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 68 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2025-03-17 19:45:47,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 77 transitions, 473 flow [2025-03-17 19:45:47,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:45:47,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:45:47,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2025-03-17 19:45:47,944 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.627906976744186 [2025-03-17 19:45:47,944 INFO L175 Difference]: Start difference. First operand has 52 places, 59 transitions, 294 flow. Second operand 3 states and 81 transitions. [2025-03-17 19:45:47,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 77 transitions, 473 flow [2025-03-17 19:45:47,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 77 transitions, 449 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-03-17 19:45:47,947 INFO L231 Difference]: Finished difference. Result has 53 places, 60 transitions, 284 flow [2025-03-17 19:45:47,947 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=53, PETRI_TRANSITIONS=60} [2025-03-17 19:45:47,947 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 12 predicate places. [2025-03-17 19:45:47,948 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 60 transitions, 284 flow [2025-03-17 19:45:47,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:47,948 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:47,948 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:45:47,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:45:47,948 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-03-17 19:45:47,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:47,950 INFO L85 PathProgramCache]: Analyzing trace with hash -268520561, now seen corresponding path program 1 times [2025-03-17 19:45:47,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:47,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856785548] [2025-03-17 19:45:47,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:47,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:47,958 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:45:47,966 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:45:47,970 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:47,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:48,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:48,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:48,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856785548] [2025-03-17 19:45:48,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856785548] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:45:48,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:45:48,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:45:48,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071650330] [2025-03-17 19:45:48,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:45:48,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:45:48,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:48,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:45:48,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:45:48,067 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2025-03-17 19:45:48,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 60 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:48,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:48,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2025-03-17 19:45:48,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:48,203 INFO L124 PetriNetUnfolderBase]: 488/890 cut-off events. [2025-03-17 19:45:48,203 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2025-03-17 19:45:48,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2031 conditions, 890 events. 488/890 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4580 event pairs, 390 based on Foata normal form. 37/728 useless extension candidates. Maximal degree in co-relation 1937. Up to 626 conditions per place. [2025-03-17 19:45:48,207 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 75 selfloop transitions, 5 changer transitions 3/90 dead transitions. [2025-03-17 19:45:48,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 90 transitions, 586 flow [2025-03-17 19:45:48,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:45:48,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:45:48,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2025-03-17 19:45:48,209 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5116279069767442 [2025-03-17 19:45:48,209 INFO L175 Difference]: Start difference. First operand has 53 places, 60 transitions, 284 flow. Second operand 5 states and 110 transitions. [2025-03-17 19:45:48,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 90 transitions, 586 flow [2025-03-17 19:45:48,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 90 transitions, 583 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:45:48,211 INFO L231 Difference]: Finished difference. Result has 58 places, 62 transitions, 321 flow [2025-03-17 19:45:48,211 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=321, PETRI_PLACES=58, PETRI_TRANSITIONS=62} [2025-03-17 19:45:48,212 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 17 predicate places. [2025-03-17 19:45:48,212 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 62 transitions, 321 flow [2025-03-17 19:45:48,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:48,212 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:48,212 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:45:48,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:45:48,212 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-03-17 19:45:48,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:48,213 INFO L85 PathProgramCache]: Analyzing trace with hash -2091812105, now seen corresponding path program 1 times [2025-03-17 19:45:48,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:48,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87518970] [2025-03-17 19:45:48,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:48,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:48,218 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:45:48,225 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:45:48,227 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:48,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:48,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:45:48,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:48,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87518970] [2025-03-17 19:45:48,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87518970] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:45:48,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:45:48,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:45:48,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036182046] [2025-03-17 19:45:48,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:45:48,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:45:48,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:48,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:45:48,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:45:48,296 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2025-03-17 19:45:48,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 62 transitions, 321 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:48,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:48,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2025-03-17 19:45:48,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:48,415 INFO L124 PetriNetUnfolderBase]: 486/888 cut-off events. [2025-03-17 19:45:48,416 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2025-03-17 19:45:48,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2135 conditions, 888 events. 486/888 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4508 event pairs, 390 based on Foata normal form. 2/684 useless extension candidates. Maximal degree in co-relation 2039. Up to 850 conditions per place. [2025-03-17 19:45:48,420 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 46 selfloop transitions, 7 changer transitions 0/60 dead transitions. [2025-03-17 19:45:48,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 60 transitions, 411 flow [2025-03-17 19:45:48,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:45:48,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:45:48,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2025-03-17 19:45:48,421 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49612403100775193 [2025-03-17 19:45:48,421 INFO L175 Difference]: Start difference. First operand has 58 places, 62 transitions, 321 flow. Second operand 3 states and 64 transitions. [2025-03-17 19:45:48,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 60 transitions, 411 flow [2025-03-17 19:45:48,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 60 transitions, 399 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-17 19:45:48,425 INFO L231 Difference]: Finished difference. Result has 58 places, 60 transitions, 307 flow [2025-03-17 19:45:48,426 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=307, PETRI_PLACES=58, PETRI_TRANSITIONS=60} [2025-03-17 19:45:48,426 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 17 predicate places. [2025-03-17 19:45:48,427 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 60 transitions, 307 flow [2025-03-17 19:45:48,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:48,427 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:48,427 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:45:48,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 19:45:48,427 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-03-17 19:45:48,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:48,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1921260680, now seen corresponding path program 1 times [2025-03-17 19:45:48,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:48,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337782608] [2025-03-17 19:45:48,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:48,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:48,435 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 19:45:48,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 19:45:48,441 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:48,441 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:48,489 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:45:48,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:48,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337782608] [2025-03-17 19:45:48,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337782608] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:45:48,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269031616] [2025-03-17 19:45:48,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:48,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:48,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:45:48,492 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:45:48,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 19:45:48,533 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 19:45:48,547 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 19:45:48,547 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:48,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:48,549 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-17 19:45:48,551 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:45:48,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:48,657 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:45:48,729 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:48,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269031616] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:45:48,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:45:48,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 7, 7] total 14 [2025-03-17 19:45:48,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239032344] [2025-03-17 19:45:48,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:45:48,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-17 19:45:48,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:48,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-17 19:45:48,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2025-03-17 19:45:48,769 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2025-03-17 19:45:48,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 60 transitions, 307 flow. Second operand has 15 states, 15 states have (on average 9.2) internal successors, (138), 15 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:48,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:48,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2025-03-17 19:45:48,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:49,144 INFO L124 PetriNetUnfolderBase]: 693/1250 cut-off events. [2025-03-17 19:45:49,145 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2025-03-17 19:45:49,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2940 conditions, 1250 events. 693/1250 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6623 event pairs, 248 based on Foata normal form. 0/995 useless extension candidates. Maximal degree in co-relation 2841. Up to 359 conditions per place. [2025-03-17 19:45:49,153 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 83 selfloop transitions, 32 changer transitions 3/123 dead transitions. [2025-03-17 19:45:49,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 123 transitions, 710 flow [2025-03-17 19:45:49,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 19:45:49,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 19:45:49,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 185 transitions. [2025-03-17 19:45:49,156 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35852713178294576 [2025-03-17 19:45:49,156 INFO L175 Difference]: Start difference. First operand has 58 places, 60 transitions, 307 flow. Second operand 12 states and 185 transitions. [2025-03-17 19:45:49,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 123 transitions, 710 flow [2025-03-17 19:45:49,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 123 transitions, 703 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:45:49,160 INFO L231 Difference]: Finished difference. Result has 68 places, 63 transitions, 375 flow [2025-03-17 19:45:49,160 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=375, PETRI_PLACES=68, PETRI_TRANSITIONS=63} [2025-03-17 19:45:49,161 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 27 predicate places. [2025-03-17 19:45:49,161 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 63 transitions, 375 flow [2025-03-17 19:45:49,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.2) internal successors, (138), 15 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:49,161 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:49,162 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:45:49,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 19:45:49,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:49,366 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-03-17 19:45:49,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:49,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1909356639, now seen corresponding path program 1 times [2025-03-17 19:45:49,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:49,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908967705] [2025-03-17 19:45:49,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:49,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:49,373 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 19:45:49,382 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 19:45:49,383 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:49,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:49,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:45:49,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:49,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908967705] [2025-03-17 19:45:49,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908967705] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:45:49,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731068623] [2025-03-17 19:45:49,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:49,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:49,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:45:49,488 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:45:49,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 19:45:49,528 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 19:45:49,542 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 19:45:49,542 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:49,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:49,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:45:49,544 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:45:49,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 19:45:49,560 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:45:49,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731068623] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:45:49,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:45:49,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2025-03-17 19:45:49,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542617502] [2025-03-17 19:45:49,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:45:49,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:45:49,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:49,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:45:49,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 19:45:49,561 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2025-03-17 19:45:49,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 63 transitions, 375 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:49,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:49,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2025-03-17 19:45:49,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:49,646 INFO L124 PetriNetUnfolderBase]: 564/1040 cut-off events. [2025-03-17 19:45:49,646 INFO L125 PetriNetUnfolderBase]: For 421/421 co-relation queries the response was YES. [2025-03-17 19:45:49,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2611 conditions, 1040 events. 564/1040 cut-off events. For 421/421 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5301 event pairs, 435 based on Foata normal form. 0/942 useless extension candidates. Maximal degree in co-relation 2501. Up to 998 conditions per place. [2025-03-17 19:45:49,650 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 46 selfloop transitions, 1 changer transitions 7/61 dead transitions. [2025-03-17 19:45:49,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 61 transitions, 475 flow [2025-03-17 19:45:49,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:45:49,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:45:49,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2025-03-17 19:45:49,651 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2025-03-17 19:45:49,651 INFO L175 Difference]: Start difference. First operand has 68 places, 63 transitions, 375 flow. Second operand 3 states and 60 transitions. [2025-03-17 19:45:49,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 61 transitions, 475 flow [2025-03-17 19:45:49,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 61 transitions, 464 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:45:49,655 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 326 flow [2025-03-17 19:45:49,655 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=326, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2025-03-17 19:45:49,656 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 24 predicate places. [2025-03-17 19:45:49,657 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 326 flow [2025-03-17 19:45:49,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:49,657 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:49,657 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-03-17 19:45:49,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 19:45:49,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:49,857 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-03-17 19:45:49,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:49,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1226125926, now seen corresponding path program 2 times [2025-03-17 19:45:49,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:49,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046204206] [2025-03-17 19:45:49,858 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:45:49,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:49,864 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-17 19:45:49,869 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-17 19:45:49,869 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:45:49,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:49,895 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 19:45:49,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:49,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046204206] [2025-03-17 19:45:49,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046204206] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:45:49,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334736396] [2025-03-17 19:45:49,896 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:45:49,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:49,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:45:49,898 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:45:49,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 19:45:49,936 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-17 19:45:49,942 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-17 19:45:49,943 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:45:49,943 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:49,943 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 19:45:49,944 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:45:49,965 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 19:45:49,966 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:45:49,987 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 19:45:49,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334736396] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:45:49,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:45:49,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-03-17 19:45:49,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080237362] [2025-03-17 19:45:49,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:45:49,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:45:49,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:49,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:45:49,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:45:49,995 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2025-03-17 19:45:49,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 326 flow. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:49,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:49,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2025-03-17 19:45:49,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:50,066 INFO L124 PetriNetUnfolderBase]: 304/567 cut-off events. [2025-03-17 19:45:50,066 INFO L125 PetriNetUnfolderBase]: For 209/209 co-relation queries the response was YES. [2025-03-17 19:45:50,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1460 conditions, 567 events. 304/567 cut-off events. For 209/209 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2383 event pairs, 228 based on Foata normal form. 1/499 useless extension candidates. Maximal degree in co-relation 1442. Up to 532 conditions per place. [2025-03-17 19:45:50,069 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 32 selfloop transitions, 16 changer transitions 0/53 dead transitions. [2025-03-17 19:45:50,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 53 transitions, 412 flow [2025-03-17 19:45:50,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:45:50,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:45:50,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 53 transitions. [2025-03-17 19:45:50,070 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3081395348837209 [2025-03-17 19:45:50,070 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 326 flow. Second operand 4 states and 53 transitions. [2025-03-17 19:45:50,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 53 transitions, 412 flow [2025-03-17 19:45:50,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 53 transitions, 409 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-17 19:45:50,071 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 345 flow [2025-03-17 19:45:50,072 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=345, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2025-03-17 19:45:50,072 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2025-03-17 19:45:50,072 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 345 flow [2025-03-17 19:45:50,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:50,072 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:50,072 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2025-03-17 19:45:50,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-17 19:45:50,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:50,278 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-03-17 19:45:50,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:50,278 INFO L85 PathProgramCache]: Analyzing trace with hash 158493871, now seen corresponding path program 1 times [2025-03-17 19:45:50,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:50,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677217105] [2025-03-17 19:45:50,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:50,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:50,284 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:45:50,291 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:45:50,291 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:50,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:50,402 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:50,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:50,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677217105] [2025-03-17 19:45:50,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677217105] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:45:50,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082720065] [2025-03-17 19:45:50,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:50,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:50,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:45:50,405 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:45:50,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 19:45:50,445 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:45:50,458 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:45:50,458 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:50,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:50,459 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-17 19:45:50,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:45:50,489 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:50,489 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:45:50,610 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:50,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082720065] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:45:50,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:45:50,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-03-17 19:45:50,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728743037] [2025-03-17 19:45:50,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:45:50,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-17 19:45:50,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:50,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-17 19:45:50,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-03-17 19:45:50,653 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2025-03-17 19:45:50,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 345 flow. Second operand has 24 states, 24 states have (on average 8.083333333333334) internal successors, (194), 24 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:50,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:50,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2025-03-17 19:45:50,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:50,898 INFO L124 PetriNetUnfolderBase]: 322/639 cut-off events. [2025-03-17 19:45:50,898 INFO L125 PetriNetUnfolderBase]: For 524/524 co-relation queries the response was YES. [2025-03-17 19:45:50,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1729 conditions, 639 events. 322/639 cut-off events. For 524/524 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2731 event pairs, 228 based on Foata normal form. 12/576 useless extension candidates. Maximal degree in co-relation 1711. Up to 528 conditions per place. [2025-03-17 19:45:50,901 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 24 selfloop transitions, 60 changer transitions 0/89 dead transitions. [2025-03-17 19:45:50,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 89 transitions, 837 flow [2025-03-17 19:45:50,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-17 19:45:50,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-03-17 19:45:50,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 242 transitions. [2025-03-17 19:45:50,903 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2558139534883721 [2025-03-17 19:45:50,904 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 345 flow. Second operand 22 states and 242 transitions. [2025-03-17 19:45:50,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 89 transitions, 837 flow [2025-03-17 19:45:50,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 89 transitions, 769 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:45:50,906 INFO L231 Difference]: Finished difference. Result has 83 places, 89 transitions, 767 flow [2025-03-17 19:45:50,906 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=767, PETRI_PLACES=83, PETRI_TRANSITIONS=89} [2025-03-17 19:45:50,908 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 42 predicate places. [2025-03-17 19:45:50,908 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 89 transitions, 767 flow [2025-03-17 19:45:50,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 8.083333333333334) internal successors, (194), 24 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:50,908 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:50,908 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:45:50,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-17 19:45:51,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:51,113 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-03-17 19:45:51,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:51,113 INFO L85 PathProgramCache]: Analyzing trace with hash 650448259, now seen corresponding path program 1 times [2025-03-17 19:45:51,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:51,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778823571] [2025-03-17 19:45:51,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:51,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:51,126 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:45:51,132 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:45:51,133 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:51,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:51,163 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-17 19:45:51,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:51,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778823571] [2025-03-17 19:45:51,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778823571] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:45:51,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808253185] [2025-03-17 19:45:51,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:51,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:51,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:45:51,166 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:45:51,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 19:45:51,208 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:45:51,221 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:45:51,222 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:51,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:51,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:45:51,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:45:51,240 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-17 19:45:51,240 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:45:51,262 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-17 19:45:51,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808253185] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:45:51,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:45:51,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2025-03-17 19:45:51,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126495490] [2025-03-17 19:45:51,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:45:51,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 19:45:51,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:51,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 19:45:51,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-17 19:45:51,263 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2025-03-17 19:45:51,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 89 transitions, 767 flow. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:51,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:51,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2025-03-17 19:45:51,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:51,416 INFO L124 PetriNetUnfolderBase]: 721/1314 cut-off events. [2025-03-17 19:45:51,416 INFO L125 PetriNetUnfolderBase]: For 593/593 co-relation queries the response was YES. [2025-03-17 19:45:51,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3354 conditions, 1314 events. 721/1314 cut-off events. For 593/593 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 6247 event pairs, 93 based on Foata normal form. 0/1185 useless extension candidates. Maximal degree in co-relation 3330. Up to 303 conditions per place. [2025-03-17 19:45:51,422 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 133 selfloop transitions, 5 changer transitions 0/144 dead transitions. [2025-03-17 19:45:51,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 144 transitions, 1183 flow [2025-03-17 19:45:51,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:45:51,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:45:51,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2025-03-17 19:45:51,423 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5736434108527132 [2025-03-17 19:45:51,423 INFO L175 Difference]: Start difference. First operand has 83 places, 89 transitions, 767 flow. Second operand 6 states and 148 transitions. [2025-03-17 19:45:51,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 144 transitions, 1183 flow [2025-03-17 19:45:51,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 144 transitions, 1029 flow, removed 47 selfloop flow, removed 9 redundant places. [2025-03-17 19:45:51,428 INFO L231 Difference]: Finished difference. Result has 82 places, 92 transitions, 649 flow [2025-03-17 19:45:51,428 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=649, PETRI_PLACES=82, PETRI_TRANSITIONS=92} [2025-03-17 19:45:51,429 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 41 predicate places. [2025-03-17 19:45:51,429 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 92 transitions, 649 flow [2025-03-17 19:45:51,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:51,429 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:51,429 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-17 19:45:51,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-17 19:45:51,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:51,630 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-03-17 19:45:51,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:51,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1075246833, now seen corresponding path program 2 times [2025-03-17 19:45:51,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:51,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466347957] [2025-03-17 19:45:51,630 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:45:51,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:51,635 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-03-17 19:45:51,644 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-17 19:45:51,644 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:45:51,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:51,692 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-17 19:45:51,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:51,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466347957] [2025-03-17 19:45:51,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466347957] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:45:51,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650111126] [2025-03-17 19:45:51,692 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:45:51,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:51,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:45:51,694 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:45:51,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 19:45:51,740 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-03-17 19:45:51,756 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-17 19:45:51,756 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:45:51,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:51,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:45:51,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:45:51,783 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-17 19:45:51,783 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:45:51,812 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-17 19:45:51,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650111126] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:45:51,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:45:51,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-03-17 19:45:51,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404937183] [2025-03-17 19:45:51,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:45:51,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:45:51,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:51,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:45:51,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:45:51,814 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2025-03-17 19:45:51,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 92 transitions, 649 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:51,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:51,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2025-03-17 19:45:51,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:51,909 INFO L124 PetriNetUnfolderBase]: 695/1268 cut-off events. [2025-03-17 19:45:51,910 INFO L125 PetriNetUnfolderBase]: For 761/761 co-relation queries the response was YES. [2025-03-17 19:45:51,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3287 conditions, 1268 events. 695/1268 cut-off events. For 761/761 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6217 event pairs, 441 based on Foata normal form. 20/1179 useless extension candidates. Maximal degree in co-relation 3260. Up to 1019 conditions per place. [2025-03-17 19:45:51,914 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 56 selfloop transitions, 1 changer transitions 40/100 dead transitions. [2025-03-17 19:45:51,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 100 transitions, 849 flow [2025-03-17 19:45:51,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:45:51,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:45:51,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2025-03-17 19:45:51,915 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2025-03-17 19:45:51,915 INFO L175 Difference]: Start difference. First operand has 82 places, 92 transitions, 649 flow. Second operand 4 states and 76 transitions. [2025-03-17 19:45:51,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 100 transitions, 849 flow [2025-03-17 19:45:51,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 100 transitions, 831 flow, removed 4 selfloop flow, removed 5 redundant places. [2025-03-17 19:45:51,920 INFO L231 Difference]: Finished difference. Result has 79 places, 60 transitions, 516 flow [2025-03-17 19:45:51,920 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=516, PETRI_PLACES=79, PETRI_TRANSITIONS=60} [2025-03-17 19:45:51,922 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 38 predicate places. [2025-03-17 19:45:51,922 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 60 transitions, 516 flow [2025-03-17 19:45:51,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:51,922 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:51,922 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 1, 1, 1] [2025-03-17 19:45:51,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-17 19:45:52,126 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,SelfDestructingSolverStorable11 [2025-03-17 19:45:52,126 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-03-17 19:45:52,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:52,127 INFO L85 PathProgramCache]: Analyzing trace with hash -139533457, now seen corresponding path program 2 times [2025-03-17 19:45:52,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:52,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142202605] [2025-03-17 19:45:52,127 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:45:52,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:52,136 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-03-17 19:45:52,142 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-03-17 19:45:52,142 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:45:52,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:52,230 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-17 19:45:52,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:52,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142202605] [2025-03-17 19:45:52,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142202605] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:45:52,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052207518] [2025-03-17 19:45:52,230 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:45:52,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:52,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:45:52,232 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:45:52,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-17 19:45:52,277 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-03-17 19:45:52,297 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-03-17 19:45:52,297 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:45:52,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:52,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 19:45:52,299 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:45:52,331 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-17 19:45:52,331 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:45:52,374 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-17 19:45:52,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052207518] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:45:52,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:45:52,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-03-17 19:45:52,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121306127] [2025-03-17 19:45:52,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:45:52,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:45:52,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:52,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:45:52,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:45:52,382 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2025-03-17 19:45:52,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 60 transitions, 516 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:52,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:52,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2025-03-17 19:45:52,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:52,406 INFO L124 PetriNetUnfolderBase]: 12/111 cut-off events. [2025-03-17 19:45:52,406 INFO L125 PetriNetUnfolderBase]: For 325/325 co-relation queries the response was YES. [2025-03-17 19:45:52,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 111 events. 12/111 cut-off events. For 325/325 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 193 event pairs, 0 based on Foata normal form. 2/112 useless extension candidates. Maximal degree in co-relation 438. Up to 45 conditions per place. [2025-03-17 19:45:52,407 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 0 selfloop transitions, 0 changer transitions 59/59 dead transitions. [2025-03-17 19:45:52,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 59 transitions, 608 flow [2025-03-17 19:45:52,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:45:52,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:45:52,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 35 transitions. [2025-03-17 19:45:52,407 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.20348837209302326 [2025-03-17 19:45:52,407 INFO L175 Difference]: Start difference. First operand has 79 places, 60 transitions, 516 flow. Second operand 4 states and 35 transitions. [2025-03-17 19:45:52,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 59 transitions, 608 flow [2025-03-17 19:45:52,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 59 transitions, 560 flow, removed 2 selfloop flow, removed 13 redundant places. [2025-03-17 19:45:52,410 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2025-03-17 19:45:52,410 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2025-03-17 19:45:52,411 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2025-03-17 19:45:52,411 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2025-03-17 19:45:52,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:45:52,414 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2025-03-17 19:45:52,414 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2025-03-17 19:45:52,414 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2025-03-17 19:45:52,414 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2025-03-17 19:45:52,414 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2025-03-17 19:45:52,414 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2025-03-17 19:45:52,414 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2025-03-17 19:45:52,415 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2025-03-17 19:45:52,415 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2025-03-17 19:45:52,415 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2025-03-17 19:45:52,415 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2025-03-17 19:45:52,415 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 18 remaining) [2025-03-17 19:45:52,415 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2025-03-17 19:45:52,415 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2025-03-17 19:45:52,415 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2025-03-17 19:45:52,415 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2025-03-17 19:45:52,415 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2025-03-17 19:45:52,415 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2025-03-17 19:45:52,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-17 19:45:52,615 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,SelfDestructingSolverStorable12 [2025-03-17 19:45:52,616 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:45:52,619 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-17 19:45:52,620 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 19:45:52,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 07:45:52 BasicIcfg [2025-03-17 19:45:52,623 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 19:45:52,623 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 19:45:52,623 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 19:45:52,623 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 19:45:52,624 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:45:45" (3/4) ... [2025-03-17 19:45:52,625 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-17 19:45:52,626 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-17 19:45:52,626 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-17 19:45:52,631 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 101 nodes and edges [2025-03-17 19:45:52,633 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 41 nodes and edges [2025-03-17 19:45:52,633 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2025-03-17 19:45:52,633 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-17 19:45:52,696 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-17 19:45:52,696 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-17 19:45:52,696 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 19:45:52,697 INFO L158 Benchmark]: Toolchain (without parser) took 7582.98ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 112.9MB in the beginning and 88.7MB in the end (delta: 24.2MB). Peak memory consumption was 55.3MB. Max. memory is 16.1GB. [2025-03-17 19:45:52,697 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 123.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:45:52,697 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.04ms. Allocated memory is still 142.6MB. Free memory was 112.5MB in the beginning and 100.6MB in the end (delta: 11.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 19:45:52,697 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.38ms. Allocated memory is still 142.6MB. Free memory was 100.6MB in the beginning and 99.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:45:52,697 INFO L158 Benchmark]: Boogie Preprocessor took 37.96ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 96.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:45:52,698 INFO L158 Benchmark]: IcfgBuilder took 630.80ms. Allocated memory is still 142.6MB. Free memory was 96.9MB in the beginning and 45.7MB in the end (delta: 51.2MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2025-03-17 19:45:52,698 INFO L158 Benchmark]: TraceAbstraction took 6636.44ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 45.2MB in the beginning and 96.8MB in the end (delta: -51.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:45:52,698 INFO L158 Benchmark]: Witness Printer took 72.94ms. Allocated memory is still 176.2MB. Free memory was 96.8MB in the beginning and 88.7MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 19:45:52,699 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 123.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 172.04ms. Allocated memory is still 142.6MB. Free memory was 112.5MB in the beginning and 100.6MB in the end (delta: 11.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.38ms. Allocated memory is still 142.6MB. Free memory was 100.6MB in the beginning and 99.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.96ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 96.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 630.80ms. Allocated memory is still 142.6MB. Free memory was 96.9MB in the beginning and 45.7MB in the end (delta: 51.2MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * TraceAbstraction took 6636.44ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 45.2MB in the beginning and 96.8MB in the end (delta: -51.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 72.94ms. Allocated memory is still 176.2MB. Free memory was 96.8MB in the beginning and 88.7MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: 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: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: 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 5 procedures, 61 locations, 68 edges, 18 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: 6.5s, OverallIterations: 13, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 571 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 526 mSDsluCounter, 231 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 213 mSDsCounter, 129 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1528 IncrementalHoareTripleChecker+Invalid, 1657 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 129 mSolverCounterUnsat, 18 mSDtfsCounter, 1528 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 339 GetRequests, 230 SyntacticMatches, 6 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=767occurred in iteration=10, InterpolantAutomatonStates: 86, 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, 1.6s InterpolantComputationTime, 334 NumberOfCodeBlocks, 310 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 437 ConstructedInterpolants, 0 QuantifiedInterpolants, 1395 SizeOfPredicates, 26 NumberOfNonLiveVariables, 1279 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 29 InterpolantComputations, 6 PerfectInterpolantSequences, 616/840 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-17 19:45:52,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE