./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/triangular-longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed 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/pthread/triangular-longest-1.i -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 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:22:13,747 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:22:13,806 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:22:13,809 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:22:13,810 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:22:13,829 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:22:13,830 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:22:13,830 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:22:13,830 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:22:13,831 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:22:13,831 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:22:13,831 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:22:13,831 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:22:13,832 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:22:13,832 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:22:13,832 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:22:13,832 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:22:13,832 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:22:13,833 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:22:13,833 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:22:13,833 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:22:13,833 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:22:13,833 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:22:13,833 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:22:13,833 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:22:13,833 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:22:13,833 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:22:13,833 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:22:13,833 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:22:13,833 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:22:13,833 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:22:13,833 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:22:13,834 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:22:13,834 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:22:13,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:22:13,834 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:22:13,834 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:22:13,834 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:22:13,834 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:22:13,834 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:22:13,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:22:13,834 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:22:13,834 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:22:13,834 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:22:13,834 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:22:13,834 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 -> 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 [2025-03-09 06:22:14,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:22:14,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:22:14,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:22:14,087 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:22:14,087 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:22:14,089 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-longest-1.i [2025-03-09 06:22:15,270 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/482af7adc/4cd4c5dd6cb84eeebaefddf54a616e45/FLAG76b4e9fa8 [2025-03-09 06:22:15,558 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:22:15,558 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-1.i [2025-03-09 06:22:15,576 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/482af7adc/4cd4c5dd6cb84eeebaefddf54a616e45/FLAG76b4e9fa8 [2025-03-09 06:22:15,834 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/482af7adc/4cd4c5dd6cb84eeebaefddf54a616e45 [2025-03-09 06:22:15,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:22:15,836 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:22:15,837 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:22:15,837 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:22:15,841 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:22:15,842 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:22:15" (1/1) ... [2025-03-09 06:22:15,843 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fe95ea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:15, skipping insertion in model container [2025-03-09 06:22:15,843 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:22:15" (1/1) ... [2025-03-09 06:22:15,868 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:22:16,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:22:16,141 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:22:16,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:22:16,213 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:22:16,214 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:16 WrapperNode [2025-03-09 06:22:16,215 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:22:16,216 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:22:16,216 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:22:16,216 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:22:16,221 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:16" (1/1) ... [2025-03-09 06:22:16,234 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:16" (1/1) ... [2025-03-09 06:22:16,246 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2025-03-09 06:22:16,247 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:22:16,248 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:22:16,248 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:22:16,249 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:22:16,253 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:16" (1/1) ... [2025-03-09 06:22:16,254 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:16" (1/1) ... [2025-03-09 06:22:16,257 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:16" (1/1) ... [2025-03-09 06:22:16,272 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-09 06:22:16,273 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:16" (1/1) ... [2025-03-09 06:22:16,273 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:16" (1/1) ... [2025-03-09 06:22:16,279 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:16" (1/1) ... [2025-03-09 06:22:16,280 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:16" (1/1) ... [2025-03-09 06:22:16,280 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:16" (1/1) ... [2025-03-09 06:22:16,281 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:16" (1/1) ... [2025-03-09 06:22:16,282 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:22:16,282 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:22:16,283 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:22:16,283 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:22:16,283 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:16" (1/1) ... [2025-03-09 06:22:16,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:22:16,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:22:16,310 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) [2025-03-09 06:22:16,313 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 [2025-03-09 06:22:16,331 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-03-09 06:22:16,331 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-03-09 06:22:16,331 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-03-09 06:22:16,331 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-03-09 06:22:16,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-09 06:22:16,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:22:16,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:22:16,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-09 06:22:16,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:22:16,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:22:16,332 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 06:22:16,420 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:22:16,421 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:22:16,526 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:22:16,526 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:22:16,607 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:22:16,608 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:22:16,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:22:16 BoogieIcfgContainer [2025-03-09 06:22:16,608 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:22:16,609 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:22:16,609 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:22:16,617 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:22:16,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:22:15" (1/3) ... [2025-03-09 06:22:16,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f52940f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:22:16, skipping insertion in model container [2025-03-09 06:22:16,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:16" (2/3) ... [2025-03-09 06:22:16,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f52940f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:22:16, skipping insertion in model container [2025-03-09 06:22:16,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:22:16" (3/3) ... [2025-03-09 06:22:16,619 INFO L128 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2025-03-09 06:22:16,630 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:22:16,632 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG triangular-longest-1.i that has 3 procedures, 31 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2025-03-09 06:22:16,633 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:22:16,669 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 06:22:16,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 72 flow [2025-03-09 06:22:16,716 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2025-03-09 06:22:16,717 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:22:16,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 2/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 76 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2025-03-09 06:22:16,720 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 72 flow [2025-03-09 06:22:16,723 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 30 transitions, 66 flow [2025-03-09 06:22:16,728 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:22:16,735 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;@3d516af0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:22:16,735 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-03-09 06:22:16,739 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:22:16,739 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-03-09 06:22:16,739 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:22:16,739 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:16,744 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 06:22:16,744 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:16,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:16,748 INFO L85 PathProgramCache]: Analyzing trace with hash 185325867, now seen corresponding path program 1 times [2025-03-09 06:22:16,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:16,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67791496] [2025-03-09 06:22:16,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:16,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:16,809 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 06:22:16,821 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 06:22:16,823 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:16,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:16,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:16,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:16,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67791496] [2025-03-09 06:22:16,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67791496] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:16,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:16,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:22:16,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022588996] [2025-03-09 06:22:16,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:16,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:22:16,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:16,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:22:16,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:22:16,940 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:16,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 66 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) [2025-03-09 06:22:16,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:16,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:16,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:17,145 INFO L124 PetriNetUnfolderBase]: 510/941 cut-off events. [2025-03-09 06:22:17,145 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-09 06:22:17,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1758 conditions, 941 events. 510/941 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4953 event pairs, 208 based on Foata normal form. 0/715 useless extension candidates. Maximal degree in co-relation 1748. Up to 421 conditions per place. [2025-03-09 06:22:17,153 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 31 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2025-03-09 06:22:17,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 44 transitions, 162 flow [2025-03-09 06:22:17,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:22:17,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:22:17,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2025-03-09 06:22:17,164 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7395833333333334 [2025-03-09 06:22:17,164 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 66 flow. Second operand 3 states and 71 transitions. [2025-03-09 06:22:17,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 44 transitions, 162 flow [2025-03-09 06:22:17,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:22:17,170 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 86 flow [2025-03-09 06:22:17,171 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2025-03-09 06:22:17,175 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2025-03-09 06:22:17,175 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 86 flow [2025-03-09 06:22:17,175 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) [2025-03-09 06:22:17,175 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:17,175 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 06:22:17,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:22:17,175 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:17,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:17,176 INFO L85 PathProgramCache]: Analyzing trace with hash 185325868, now seen corresponding path program 1 times [2025-03-09 06:22:17,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:17,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220338126] [2025-03-09 06:22:17,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:17,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:17,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 06:22:17,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 06:22:17,191 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:17,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:17,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:17,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:17,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220338126] [2025-03-09 06:22:17,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220338126] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:17,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:17,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:22:17,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011369910] [2025-03-09 06:22:17,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:17,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:22:17,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:17,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:22:17,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:22:17,223 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:17,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 86 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) [2025-03-09 06:22:17,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:17,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:17,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:17,330 INFO L124 PetriNetUnfolderBase]: 499/971 cut-off events. [2025-03-09 06:22:17,330 INFO L125 PetriNetUnfolderBase]: For 200/200 co-relation queries the response was YES. [2025-03-09 06:22:17,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1955 conditions, 971 events. 499/971 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5049 event pairs, 182 based on Foata normal form. 26/890 useless extension candidates. Maximal degree in co-relation 1943. Up to 466 conditions per place. [2025-03-09 06:22:17,338 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 31 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2025-03-09 06:22:17,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 45 transitions, 186 flow [2025-03-09 06:22:17,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:22:17,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:22:17,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2025-03-09 06:22:17,340 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2025-03-09 06:22:17,340 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 86 flow. Second operand 3 states and 70 transitions. [2025-03-09 06:22:17,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 45 transitions, 186 flow [2025-03-09 06:22:17,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 45 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:22:17,343 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 100 flow [2025-03-09 06:22:17,344 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2025-03-09 06:22:17,344 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2025-03-09 06:22:17,344 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 100 flow [2025-03-09 06:22:17,344 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) [2025-03-09 06:22:17,344 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:17,344 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:17,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 06:22:17,344 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:17,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:17,345 INFO L85 PathProgramCache]: Analyzing trace with hash 2004506799, now seen corresponding path program 1 times [2025-03-09 06:22:17,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:17,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928789816] [2025-03-09 06:22:17,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:17,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:17,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:22:17,362 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:22:17,362 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:17,362 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:17,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:17,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:17,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928789816] [2025-03-09 06:22:17,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928789816] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:17,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:17,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:22:17,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489999632] [2025-03-09 06:22:17,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:17,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:22:17,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:17,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:22:17,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:22:17,438 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-03-09 06:22:17,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 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) [2025-03-09 06:22:17,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:17,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-03-09 06:22:17,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:17,658 INFO L124 PetriNetUnfolderBase]: 1181/2230 cut-off events. [2025-03-09 06:22:17,658 INFO L125 PetriNetUnfolderBase]: For 710/710 co-relation queries the response was YES. [2025-03-09 06:22:17,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4651 conditions, 2230 events. 1181/2230 cut-off events. For 710/710 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 14007 event pairs, 558 based on Foata normal form. 104/2089 useless extension candidates. Maximal degree in co-relation 4638. Up to 1241 conditions per place. [2025-03-09 06:22:17,670 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 56 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2025-03-09 06:22:17,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 66 transitions, 322 flow [2025-03-09 06:22:17,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:22:17,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:22:17,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2025-03-09 06:22:17,673 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7109375 [2025-03-09 06:22:17,673 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 100 flow. Second operand 4 states and 91 transitions. [2025-03-09 06:22:17,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 66 transitions, 322 flow [2025-03-09 06:22:17,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 66 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:22:17,676 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 120 flow [2025-03-09 06:22:17,676 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2025-03-09 06:22:17,677 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2025-03-09 06:22:17,677 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 120 flow [2025-03-09 06:22:17,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 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) [2025-03-09 06:22:17,678 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:17,678 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:17,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 06:22:17,678 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:17,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:17,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1984850697, now seen corresponding path program 1 times [2025-03-09 06:22:17,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:17,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985404726] [2025-03-09 06:22:17,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:17,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:17,687 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:22:17,692 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:22:17,693 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:17,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:17,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:17,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:17,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985404726] [2025-03-09 06:22:17,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985404726] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:17,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:17,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:22:17,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677756961] [2025-03-09 06:22:17,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:17,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:22:17,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:17,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:22:17,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:22:17,720 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:17,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 120 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) [2025-03-09 06:22:17,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:17,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:17,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:17,855 INFO L124 PetriNetUnfolderBase]: 791/1734 cut-off events. [2025-03-09 06:22:17,855 INFO L125 PetriNetUnfolderBase]: For 752/768 co-relation queries the response was YES. [2025-03-09 06:22:17,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3921 conditions, 1734 events. 791/1734 cut-off events. For 752/768 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 11553 event pairs, 279 based on Foata normal form. 6/1619 useless extension candidates. Maximal degree in co-relation 3906. Up to 791 conditions per place. [2025-03-09 06:22:17,866 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 41 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2025-03-09 06:22:17,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 55 transitions, 279 flow [2025-03-09 06:22:17,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:22:17,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:22:17,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2025-03-09 06:22:17,868 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7604166666666666 [2025-03-09 06:22:17,868 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 120 flow. Second operand 3 states and 73 transitions. [2025-03-09 06:22:17,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 55 transitions, 279 flow [2025-03-09 06:22:17,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:22:17,875 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 140 flow [2025-03-09 06:22:17,875 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2025-03-09 06:22:17,875 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 10 predicate places. [2025-03-09 06:22:17,875 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 140 flow [2025-03-09 06:22:17,876 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) [2025-03-09 06:22:17,876 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:17,876 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:17,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 06:22:17,876 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:17,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:17,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1984850698, now seen corresponding path program 1 times [2025-03-09 06:22:17,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:17,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965607154] [2025-03-09 06:22:17,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:17,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:17,883 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:22:17,885 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:22:17,885 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:17,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:17,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:17,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:17,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965607154] [2025-03-09 06:22:17,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965607154] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:17,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:17,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:22:17,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407215834] [2025-03-09 06:22:17,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:17,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:22:17,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:17,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:22:17,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:22:17,910 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:17,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 140 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) [2025-03-09 06:22:17,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:17,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:17,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:18,039 INFO L124 PetriNetUnfolderBase]: 753/1716 cut-off events. [2025-03-09 06:22:18,040 INFO L125 PetriNetUnfolderBase]: For 1013/1029 co-relation queries the response was YES. [2025-03-09 06:22:18,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4132 conditions, 1716 events. 753/1716 cut-off events. For 1013/1029 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 11602 event pairs, 217 based on Foata normal form. 42/1701 useless extension candidates. Maximal degree in co-relation 4114. Up to 835 conditions per place. [2025-03-09 06:22:18,048 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 41 selfloop transitions, 4 changer transitions 0/56 dead transitions. [2025-03-09 06:22:18,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 56 transitions, 302 flow [2025-03-09 06:22:18,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:22:18,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:22:18,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2025-03-09 06:22:18,050 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.75 [2025-03-09 06:22:18,050 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 140 flow. Second operand 3 states and 72 transitions. [2025-03-09 06:22:18,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 56 transitions, 302 flow [2025-03-09 06:22:18,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 56 transitions, 294 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:22:18,052 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 154 flow [2025-03-09 06:22:18,052 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2025-03-09 06:22:18,053 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2025-03-09 06:22:18,053 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 154 flow [2025-03-09 06:22:18,053 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) [2025-03-09 06:22:18,053 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:18,053 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:18,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 06:22:18,053 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:18,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:18,054 INFO L85 PathProgramCache]: Analyzing trace with hash 476048493, now seen corresponding path program 1 times [2025-03-09 06:22:18,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:18,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023819596] [2025-03-09 06:22:18,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:18,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:18,058 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:22:18,060 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:22:18,060 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:18,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:18,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:18,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:18,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023819596] [2025-03-09 06:22:18,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023819596] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:18,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:18,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:22:18,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873983253] [2025-03-09 06:22:18,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:18,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:22:18,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:18,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:22:18,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:22:18,101 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-03-09 06:22:18,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 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) [2025-03-09 06:22:18,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:18,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-03-09 06:22:18,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:18,316 INFO L124 PetriNetUnfolderBase]: 1197/2294 cut-off events. [2025-03-09 06:22:18,316 INFO L125 PetriNetUnfolderBase]: For 1748/1947 co-relation queries the response was YES. [2025-03-09 06:22:18,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5719 conditions, 2294 events. 1197/2294 cut-off events. For 1748/1947 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 14882 event pairs, 700 based on Foata normal form. 147/2346 useless extension candidates. Maximal degree in co-relation 5700. Up to 1481 conditions per place. [2025-03-09 06:22:18,330 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 57 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2025-03-09 06:22:18,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 68 transitions, 396 flow [2025-03-09 06:22:18,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:22:18,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:22:18,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2025-03-09 06:22:18,332 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6796875 [2025-03-09 06:22:18,333 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 154 flow. Second operand 4 states and 87 transitions. [2025-03-09 06:22:18,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 68 transitions, 396 flow [2025-03-09 06:22:18,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 68 transitions, 388 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:22:18,337 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 174 flow [2025-03-09 06:22:18,338 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2025-03-09 06:22:18,338 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 15 predicate places. [2025-03-09 06:22:18,339 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 174 flow [2025-03-09 06:22:18,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 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) [2025-03-09 06:22:18,339 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:18,339 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:18,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 06:22:18,339 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:18,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:18,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1652667496, now seen corresponding path program 1 times [2025-03-09 06:22:18,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:18,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732567747] [2025-03-09 06:22:18,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:18,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:18,346 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:22:18,349 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:22:18,350 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:18,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:18,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:18,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:18,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732567747] [2025-03-09 06:22:18,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732567747] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:18,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:18,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:22:18,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733987450] [2025-03-09 06:22:18,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:18,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:22:18,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:18,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:22:18,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:22:18,391 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:18,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 174 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) [2025-03-09 06:22:18,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:18,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:18,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:18,613 INFO L124 PetriNetUnfolderBase]: 1021/2270 cut-off events. [2025-03-09 06:22:18,614 INFO L125 PetriNetUnfolderBase]: For 1871/2056 co-relation queries the response was YES. [2025-03-09 06:22:18,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6024 conditions, 2270 events. 1021/2270 cut-off events. For 1871/2056 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 16343 event pairs, 193 based on Foata normal form. 120/2344 useless extension candidates. Maximal degree in co-relation 6003. Up to 674 conditions per place. [2025-03-09 06:22:18,628 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 58 selfloop transitions, 11 changer transitions 0/81 dead transitions. [2025-03-09 06:22:18,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 81 transitions, 477 flow [2025-03-09 06:22:18,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:22:18,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:22:18,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2025-03-09 06:22:18,630 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.725 [2025-03-09 06:22:18,630 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 174 flow. Second operand 5 states and 116 transitions. [2025-03-09 06:22:18,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 81 transitions, 477 flow [2025-03-09 06:22:18,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 81 transitions, 472 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:22:18,633 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 272 flow [2025-03-09 06:22:18,634 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2025-03-09 06:22:18,635 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 22 predicate places. [2025-03-09 06:22:18,635 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 272 flow [2025-03-09 06:22:18,635 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) [2025-03-09 06:22:18,635 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:18,635 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:18,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 06:22:18,636 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:18,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:18,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1652667497, now seen corresponding path program 1 times [2025-03-09 06:22:18,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:18,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213897344] [2025-03-09 06:22:18,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:18,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:18,641 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:22:18,643 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:22:18,643 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:18,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:18,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:18,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:18,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213897344] [2025-03-09 06:22:18,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213897344] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:18,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:18,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:22:18,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913813973] [2025-03-09 06:22:18,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:18,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:22:18,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:18,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:22:18,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:22:18,671 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:18,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 272 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) [2025-03-09 06:22:18,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:18,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:18,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:18,916 INFO L124 PetriNetUnfolderBase]: 1098/2481 cut-off events. [2025-03-09 06:22:18,916 INFO L125 PetriNetUnfolderBase]: For 4261/4434 co-relation queries the response was YES. [2025-03-09 06:22:18,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6971 conditions, 2481 events. 1098/2481 cut-off events. For 4261/4434 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 17971 event pairs, 268 based on Foata normal form. 183/2571 useless extension candidates. Maximal degree in co-relation 6945. Up to 809 conditions per place. [2025-03-09 06:22:18,935 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 63 selfloop transitions, 9 changer transitions 0/84 dead transitions. [2025-03-09 06:22:18,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 84 transitions, 564 flow [2025-03-09 06:22:18,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:22:18,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:22:18,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2025-03-09 06:22:18,937 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.73125 [2025-03-09 06:22:18,937 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 272 flow. Second operand 5 states and 117 transitions. [2025-03-09 06:22:18,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 84 transitions, 564 flow [2025-03-09 06:22:18,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 84 transitions, 541 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-03-09 06:22:18,942 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 327 flow [2025-03-09 06:22:18,942 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=327, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2025-03-09 06:22:18,942 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 26 predicate places. [2025-03-09 06:22:18,943 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 327 flow [2025-03-09 06:22:18,943 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) [2025-03-09 06:22:18,943 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:18,943 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:18,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-09 06:22:18,943 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:18,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:18,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1017608297, now seen corresponding path program 1 times [2025-03-09 06:22:18,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:18,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177374714] [2025-03-09 06:22:18,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:18,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:18,948 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:22:18,952 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:22:18,955 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:18,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:18,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:18,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:18,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177374714] [2025-03-09 06:22:18,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177374714] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:18,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:18,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:22:18,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447881345] [2025-03-09 06:22:18,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:18,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:22:18,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:18,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:22:18,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:22:18,991 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:18,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 327 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) [2025-03-09 06:22:18,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:18,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:18,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:19,118 INFO L124 PetriNetUnfolderBase]: 903/1917 cut-off events. [2025-03-09 06:22:19,118 INFO L125 PetriNetUnfolderBase]: For 3740/3971 co-relation queries the response was YES. [2025-03-09 06:22:19,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5573 conditions, 1917 events. 903/1917 cut-off events. For 3740/3971 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12677 event pairs, 696 based on Foata normal form. 161/1993 useless extension candidates. Maximal degree in co-relation 5545. Up to 1466 conditions per place. [2025-03-09 06:22:19,130 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 32 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2025-03-09 06:22:19,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 45 transitions, 330 flow [2025-03-09 06:22:19,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:22:19,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:22:19,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2025-03-09 06:22:19,131 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-03-09 06:22:19,131 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 327 flow. Second operand 3 states and 56 transitions. [2025-03-09 06:22:19,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 45 transitions, 330 flow [2025-03-09 06:22:19,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 45 transitions, 314 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-03-09 06:22:19,137 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 250 flow [2025-03-09 06:22:19,137 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2025-03-09 06:22:19,137 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 23 predicate places. [2025-03-09 06:22:19,137 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 250 flow [2025-03-09 06:22:19,137 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) [2025-03-09 06:22:19,138 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:19,138 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:19,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-09 06:22:19,138 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:19,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:19,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1017608296, now seen corresponding path program 1 times [2025-03-09 06:22:19,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:19,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567128958] [2025-03-09 06:22:19,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:19,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:19,144 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:22:19,146 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:22:19,147 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:19,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:19,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:19,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:19,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567128958] [2025-03-09 06:22:19,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567128958] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:19,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:19,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:22:19,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081246078] [2025-03-09 06:22:19,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:19,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:22:19,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:19,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:22:19,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:22:19,182 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:19,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 250 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) [2025-03-09 06:22:19,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:19,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:19,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:19,371 INFO L124 PetriNetUnfolderBase]: 1002/2330 cut-off events. [2025-03-09 06:22:19,372 INFO L125 PetriNetUnfolderBase]: For 2596/2781 co-relation queries the response was YES. [2025-03-09 06:22:19,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6223 conditions, 2330 events. 1002/2330 cut-off events. For 2596/2781 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 16530 event pairs, 199 based on Foata normal form. 110/2367 useless extension candidates. Maximal degree in co-relation 6199. Up to 1168 conditions per place. [2025-03-09 06:22:19,385 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 58 selfloop transitions, 5 changer transitions 0/75 dead transitions. [2025-03-09 06:22:19,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 75 transitions, 480 flow [2025-03-09 06:22:19,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:22:19,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:22:19,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2025-03-09 06:22:19,387 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.68125 [2025-03-09 06:22:19,387 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 250 flow. Second operand 5 states and 109 transitions. [2025-03-09 06:22:19,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 75 transitions, 480 flow [2025-03-09 06:22:19,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 75 transitions, 475 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-03-09 06:22:19,392 INFO L231 Difference]: Finished difference. Result has 63 places, 46 transitions, 271 flow [2025-03-09 06:22:19,393 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=271, PETRI_PLACES=63, PETRI_TRANSITIONS=46} [2025-03-09 06:22:19,394 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2025-03-09 06:22:19,394 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 46 transitions, 271 flow [2025-03-09 06:22:19,394 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) [2025-03-09 06:22:19,395 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:19,395 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:19,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-09 06:22:19,395 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:19,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:19,395 INFO L85 PathProgramCache]: Analyzing trace with hash -2101859406, now seen corresponding path program 1 times [2025-03-09 06:22:19,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:19,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944932294] [2025-03-09 06:22:19,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:19,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:19,399 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:22:19,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:22:19,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:19,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:19,450 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:19,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:19,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944932294] [2025-03-09 06:22:19,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944932294] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:22:19,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191879259] [2025-03-09 06:22:19,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:19,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:22:19,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:22:19,454 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) [2025-03-09 06:22:19,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 06:22:19,494 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:22:19,502 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:22:19,502 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:19,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:19,503 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:22:19,506 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:22:19,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:19,553 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:22:19,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191879259] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:19,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:22:19,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-03-09 06:22:19,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136555146] [2025-03-09 06:22:19,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:19,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:22:19,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:19,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:22:19,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-09 06:22:19,561 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-03-09 06:22:19,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 46 transitions, 271 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2025-03-09 06:22:19,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:19,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-03-09 06:22:19,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:19,780 INFO L124 PetriNetUnfolderBase]: 1858/3390 cut-off events. [2025-03-09 06:22:19,780 INFO L125 PetriNetUnfolderBase]: For 4438/4674 co-relation queries the response was YES. [2025-03-09 06:22:19,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9796 conditions, 3390 events. 1858/3390 cut-off events. For 4438/4674 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 21685 event pairs, 259 based on Foata normal form. 202/3404 useless extension candidates. Maximal degree in co-relation 9769. Up to 1361 conditions per place. [2025-03-09 06:22:19,796 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 63 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2025-03-09 06:22:19,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 566 flow [2025-03-09 06:22:19,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:22:19,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:22:19,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2025-03-09 06:22:19,797 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.59375 [2025-03-09 06:22:19,797 INFO L175 Difference]: Start difference. First operand has 63 places, 46 transitions, 271 flow. Second operand 4 states and 76 transitions. [2025-03-09 06:22:19,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 566 flow [2025-03-09 06:22:19,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 76 transitions, 552 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-09 06:22:19,805 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 271 flow [2025-03-09 06:22:19,805 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2025-03-09 06:22:19,805 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2025-03-09 06:22:19,805 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 271 flow [2025-03-09 06:22:19,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2025-03-09 06:22:19,806 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:19,806 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-09 06:22:19,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-09 06:22:20,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-09 06:22:20,010 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:20,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:20,010 INFO L85 PathProgramCache]: Analyzing trace with hash -733131992, now seen corresponding path program 1 times [2025-03-09 06:22:20,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:20,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112751116] [2025-03-09 06:22:20,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:20,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:20,016 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:22:20,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:22:20,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:20,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:20,048 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:22:20,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:20,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112751116] [2025-03-09 06:22:20,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112751116] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:20,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:20,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:22:20,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568634871] [2025-03-09 06:22:20,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:20,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:22:20,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:20,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:22:20,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:22:20,055 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-03-09 06:22:20,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 271 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:20,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:20,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-03-09 06:22:20,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:20,259 INFO L124 PetriNetUnfolderBase]: 1583/3216 cut-off events. [2025-03-09 06:22:20,259 INFO L125 PetriNetUnfolderBase]: For 4752/4869 co-relation queries the response was YES. [2025-03-09 06:22:20,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9374 conditions, 3216 events. 1583/3216 cut-off events. For 4752/4869 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 21736 event pairs, 358 based on Foata normal form. 178/3347 useless extension candidates. Maximal degree in co-relation 9348. Up to 1262 conditions per place. [2025-03-09 06:22:20,276 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 63 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2025-03-09 06:22:20,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 562 flow [2025-03-09 06:22:20,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:22:20,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:22:20,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2025-03-09 06:22:20,277 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.59375 [2025-03-09 06:22:20,277 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 271 flow. Second operand 4 states and 76 transitions. [2025-03-09 06:22:20,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 562 flow [2025-03-09 06:22:20,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 76 transitions, 550 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:22:20,287 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 275 flow [2025-03-09 06:22:20,287 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=275, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2025-03-09 06:22:20,288 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2025-03-09 06:22:20,288 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 275 flow [2025-03-09 06:22:20,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:20,288 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:20,288 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:20,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-09 06:22:20,288 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:20,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:20,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1110404095, now seen corresponding path program 1 times [2025-03-09 06:22:20,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:20,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048880233] [2025-03-09 06:22:20,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:20,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:20,293 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 06:22:20,295 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 06:22:20,296 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:20,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:20,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:20,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:20,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048880233] [2025-03-09 06:22:20,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048880233] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:22:20,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834090958] [2025-03-09 06:22:20,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:20,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:22:20,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:22:20,349 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) [2025-03-09 06:22:20,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 06:22:20,389 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 06:22:20,399 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 06:22:20,399 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:20,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:20,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:22:20,400 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:22:20,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:20,433 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:22:20,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834090958] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:20,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:22:20,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-09 06:22:20,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110913395] [2025-03-09 06:22:20,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:20,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:22:20,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:20,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:22:20,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:22:20,447 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-03-09 06:22:20,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 275 flow. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:20,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:20,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-03-09 06:22:20,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:20,720 INFO L124 PetriNetUnfolderBase]: 1521/2931 cut-off events. [2025-03-09 06:22:20,720 INFO L125 PetriNetUnfolderBase]: For 5613/5705 co-relation queries the response was YES. [2025-03-09 06:22:20,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8772 conditions, 2931 events. 1521/2931 cut-off events. For 5613/5705 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 19053 event pairs, 142 based on Foata normal form. 207/3017 useless extension candidates. Maximal degree in co-relation 8746. Up to 984 conditions per place. [2025-03-09 06:22:20,735 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 81 selfloop transitions, 6 changer transitions 1/95 dead transitions. [2025-03-09 06:22:20,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 95 transitions, 726 flow [2025-03-09 06:22:20,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:22:20,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:22:20,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2025-03-09 06:22:20,736 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.59375 [2025-03-09 06:22:20,736 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 275 flow. Second operand 6 states and 114 transitions. [2025-03-09 06:22:20,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 95 transitions, 726 flow [2025-03-09 06:22:20,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 95 transitions, 706 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:22:20,743 INFO L231 Difference]: Finished difference. Result has 65 places, 44 transitions, 275 flow [2025-03-09 06:22:20,743 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=275, PETRI_PLACES=65, PETRI_TRANSITIONS=44} [2025-03-09 06:22:20,744 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 30 predicate places. [2025-03-09 06:22:20,744 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 44 transitions, 275 flow [2025-03-09 06:22:20,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:20,744 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:20,744 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:20,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-09 06:22:20,949 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,SelfDestructingSolverStorable12 [2025-03-09 06:22:20,949 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:20,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:20,950 INFO L85 PathProgramCache]: Analyzing trace with hash 832893443, now seen corresponding path program 1 times [2025-03-09 06:22:20,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:20,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763146249] [2025-03-09 06:22:20,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:20,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:20,956 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:22:20,958 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:22:20,959 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:20,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:20,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:20,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:20,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763146249] [2025-03-09 06:22:20,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763146249] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:22:20,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186271351] [2025-03-09 06:22:20,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:20,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:22:20,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:22:20,999 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) [2025-03-09 06:22:21,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 06:22:21,027 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:22:21,035 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:22:21,035 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:21,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:21,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:22:21,036 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:22:21,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:21,059 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:22:21,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:21,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186271351] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:22:21,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:22:21,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2025-03-09 06:22:21,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253066066] [2025-03-09 06:22:21,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:22:21,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 06:22:21,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:21,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 06:22:21,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:22:21,101 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:21,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 44 transitions, 275 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:21,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:21,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:21,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:21,368 INFO L124 PetriNetUnfolderBase]: 1339/2904 cut-off events. [2025-03-09 06:22:21,368 INFO L125 PetriNetUnfolderBase]: For 6270/6352 co-relation queries the response was YES. [2025-03-09 06:22:21,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8846 conditions, 2904 events. 1339/2904 cut-off events. For 6270/6352 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 18824 event pairs, 119 based on Foata normal form. 227/3108 useless extension candidates. Maximal degree in co-relation 8819. Up to 507 conditions per place. [2025-03-09 06:22:21,381 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 73 selfloop transitions, 12 changer transitions 4/99 dead transitions. [2025-03-09 06:22:21,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 99 transitions, 703 flow [2025-03-09 06:22:21,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 06:22:21,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 06:22:21,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2025-03-09 06:22:21,385 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7053571428571429 [2025-03-09 06:22:21,385 INFO L175 Difference]: Start difference. First operand has 65 places, 44 transitions, 275 flow. Second operand 7 states and 158 transitions. [2025-03-09 06:22:21,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 99 transitions, 703 flow [2025-03-09 06:22:21,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 99 transitions, 676 flow, removed 7 selfloop flow, removed 4 redundant places. [2025-03-09 06:22:21,393 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 379 flow [2025-03-09 06:22:21,393 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=379, PETRI_PLACES=72, PETRI_TRANSITIONS=50} [2025-03-09 06:22:21,394 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 37 predicate places. [2025-03-09 06:22:21,394 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 379 flow [2025-03-09 06:22:21,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:21,394 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:21,394 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:21,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-09 06:22:21,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:22:21,595 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:21,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:21,595 INFO L85 PathProgramCache]: Analyzing trace with hash 62788742, now seen corresponding path program 1 times [2025-03-09 06:22:21,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:21,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204303528] [2025-03-09 06:22:21,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:21,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:21,599 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:22:21,601 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:22:21,601 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:21,601 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:21,630 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:22:21,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:21,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204303528] [2025-03-09 06:22:21,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204303528] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:21,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:21,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:22:21,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875036930] [2025-03-09 06:22:21,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:21,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:22:21,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:21,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:22:21,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:22:21,636 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-03-09 06:22:21,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 50 transitions, 379 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:21,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:21,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-03-09 06:22:21,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:21,907 INFO L124 PetriNetUnfolderBase]: 2138/3893 cut-off events. [2025-03-09 06:22:21,908 INFO L125 PetriNetUnfolderBase]: For 10005/10082 co-relation queries the response was YES. [2025-03-09 06:22:21,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12733 conditions, 3893 events. 2138/3893 cut-off events. For 10005/10082 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 22890 event pairs, 503 based on Foata normal form. 257/4109 useless extension candidates. Maximal degree in co-relation 12701. Up to 1567 conditions per place. [2025-03-09 06:22:21,926 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 69 selfloop transitions, 6 changer transitions 0/81 dead transitions. [2025-03-09 06:22:21,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 81 transitions, 764 flow [2025-03-09 06:22:21,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:22:21,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:22:21,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2025-03-09 06:22:21,927 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2025-03-09 06:22:21,927 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 379 flow. Second operand 4 states and 72 transitions. [2025-03-09 06:22:21,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 81 transitions, 764 flow [2025-03-09 06:22:21,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 81 transitions, 729 flow, removed 11 selfloop flow, removed 3 redundant places. [2025-03-09 06:22:21,939 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 372 flow [2025-03-09 06:22:21,939 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=372, PETRI_PLACES=72, PETRI_TRANSITIONS=50} [2025-03-09 06:22:21,940 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 37 predicate places. [2025-03-09 06:22:21,940 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 372 flow [2025-03-09 06:22:21,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:21,940 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:21,940 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:21,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-09 06:22:21,940 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:21,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:21,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1967023659, now seen corresponding path program 1 times [2025-03-09 06:22:21,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:21,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778445196] [2025-03-09 06:22:21,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:21,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:21,944 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-09 06:22:21,947 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-09 06:22:21,947 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:21,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:22,002 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:22,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:22,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778445196] [2025-03-09 06:22:22,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778445196] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:22:22,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781359387] [2025-03-09 06:22:22,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:22,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:22:22,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:22:22,005 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) [2025-03-09 06:22:22,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 06:22:22,037 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-09 06:22:22,050 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-09 06:22:22,050 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:22,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:22,051 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:22:22,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:22:22,091 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:22,092 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:22:22,148 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:22,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781359387] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:22:22,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:22:22,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-03-09 06:22:22,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570814854] [2025-03-09 06:22:22,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:22:22,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 06:22:22,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:22,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 06:22:22,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2025-03-09 06:22:22,150 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:22,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 50 transitions, 372 flow. Second operand has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 states have internal predecessors, (172), 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) [2025-03-09 06:22:22,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:22,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:22,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:22,547 INFO L124 PetriNetUnfolderBase]: 1744/3743 cut-off events. [2025-03-09 06:22:22,548 INFO L125 PetriNetUnfolderBase]: For 12928/12958 co-relation queries the response was YES. [2025-03-09 06:22:22,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11877 conditions, 3743 events. 1744/3743 cut-off events. For 12928/12958 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 23155 event pairs, 59 based on Foata normal form. 200/3940 useless extension candidates. Maximal degree in co-relation 11846. Up to 457 conditions per place. [2025-03-09 06:22:22,565 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 100 selfloop transitions, 17 changer transitions 17/144 dead transitions. [2025-03-09 06:22:22,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 144 transitions, 1032 flow [2025-03-09 06:22:22,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 06:22:22,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-09 06:22:22,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 268 transitions. [2025-03-09 06:22:22,566 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2025-03-09 06:22:22,566 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 372 flow. Second operand 12 states and 268 transitions. [2025-03-09 06:22:22,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 144 transitions, 1032 flow [2025-03-09 06:22:22,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 144 transitions, 995 flow, removed 8 selfloop flow, removed 2 redundant places. [2025-03-09 06:22:22,577 INFO L231 Difference]: Finished difference. Result has 87 places, 52 transitions, 429 flow [2025-03-09 06:22:22,578 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=429, PETRI_PLACES=87, PETRI_TRANSITIONS=52} [2025-03-09 06:22:22,578 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 52 predicate places. [2025-03-09 06:22:22,578 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 52 transitions, 429 flow [2025-03-09 06:22:22,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 states have internal predecessors, (172), 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) [2025-03-09 06:22:22,578 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:22,578 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:22,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-09 06:22:22,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-09 06:22:22,783 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:22,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:22,784 INFO L85 PathProgramCache]: Analyzing trace with hash -58641131, now seen corresponding path program 1 times [2025-03-09 06:22:22,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:22,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467752492] [2025-03-09 06:22:22,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:22,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:22,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-09 06:22:22,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-09 06:22:22,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:22,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:22,857 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:22,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:22,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467752492] [2025-03-09 06:22:22,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467752492] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:22:22,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882482565] [2025-03-09 06:22:22,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:22,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:22:22,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:22:22,860 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) [2025-03-09 06:22:22,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 06:22:22,889 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-09 06:22:22,900 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-09 06:22:22,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:22,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:22,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 06:22:22,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:22:22,938 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:22,938 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:22:23,020 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:23,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882482565] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:22:23,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:22:23,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2025-03-09 06:22:23,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15951292] [2025-03-09 06:22:23,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:22:23,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-09 06:22:23,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:23,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-09 06:22:23,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2025-03-09 06:22:23,022 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:23,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 52 transitions, 429 flow. Second operand has 16 states, 16 states have (on average 14.25) internal successors, (228), 16 states have internal predecessors, (228), 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) [2025-03-09 06:22:23,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:23,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:23,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:23,624 INFO L124 PetriNetUnfolderBase]: 2554/5409 cut-off events. [2025-03-09 06:22:23,624 INFO L125 PetriNetUnfolderBase]: For 19397/19439 co-relation queries the response was YES. [2025-03-09 06:22:23,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17144 conditions, 5409 events. 2554/5409 cut-off events. For 19397/19439 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 33758 event pairs, 119 based on Foata normal form. 192/5588 useless extension candidates. Maximal degree in co-relation 17105. Up to 647 conditions per place. [2025-03-09 06:22:23,651 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 120 selfloop transitions, 24 changer transitions 25/179 dead transitions. [2025-03-09 06:22:23,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 179 transitions, 1332 flow [2025-03-09 06:22:23,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-09 06:22:23,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-09 06:22:23,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 334 transitions. [2025-03-09 06:22:23,652 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6958333333333333 [2025-03-09 06:22:23,652 INFO L175 Difference]: Start difference. First operand has 87 places, 52 transitions, 429 flow. Second operand 15 states and 334 transitions. [2025-03-09 06:22:23,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 179 transitions, 1332 flow [2025-03-09 06:22:23,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 179 transitions, 1319 flow, removed 3 selfloop flow, removed 3 redundant places. [2025-03-09 06:22:23,671 INFO L231 Difference]: Finished difference. Result has 105 places, 60 transitions, 580 flow [2025-03-09 06:22:23,671 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=580, PETRI_PLACES=105, PETRI_TRANSITIONS=60} [2025-03-09 06:22:23,672 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 70 predicate places. [2025-03-09 06:22:23,672 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 60 transitions, 580 flow [2025-03-09 06:22:23,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.25) internal successors, (228), 16 states have internal predecessors, (228), 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) [2025-03-09 06:22:23,672 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:23,672 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:23,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-09 06:22:23,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-09 06:22:23,873 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:23,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:23,873 INFO L85 PathProgramCache]: Analyzing trace with hash -233061099, now seen corresponding path program 2 times [2025-03-09 06:22:23,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:23,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970978583] [2025-03-09 06:22:23,874 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:22:23,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:23,888 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 65 statements into 2 equivalence classes. [2025-03-09 06:22:23,897 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 65 of 65 statements. [2025-03-09 06:22:23,897 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:22:23,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:24,072 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:24,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:24,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970978583] [2025-03-09 06:22:24,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970978583] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:22:24,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275783167] [2025-03-09 06:22:24,072 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:22:24,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:22:24,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:22:24,074 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) [2025-03-09 06:22:24,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 06:22:24,104 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 65 statements into 2 equivalence classes. [2025-03-09 06:22:24,121 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 65 of 65 statements. [2025-03-09 06:22:24,121 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:22:24,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:24,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-09 06:22:24,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:22:24,189 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:24,189 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:22:24,409 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:24,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275783167] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:22:24,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:22:24,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2025-03-09 06:22:24,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604577199] [2025-03-09 06:22:24,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:22:24,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-09 06:22:24,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:24,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-09 06:22:24,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2025-03-09 06:22:24,411 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:24,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 60 transitions, 580 flow. Second operand has 28 states, 28 states have (on average 14.142857142857142) internal successors, (396), 28 states have internal predecessors, (396), 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) [2025-03-09 06:22:24,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:24,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:24,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:25,754 INFO L124 PetriNetUnfolderBase]: 4336/9215 cut-off events. [2025-03-09 06:22:25,754 INFO L125 PetriNetUnfolderBase]: For 48451/48481 co-relation queries the response was YES. [2025-03-09 06:22:25,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29574 conditions, 9215 events. 4336/9215 cut-off events. For 48451/48481 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 57326 event pairs, 59 based on Foata normal form. 360/9572 useless extension candidates. Maximal degree in co-relation 29527. Up to 1177 conditions per place. [2025-03-09 06:22:25,793 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 212 selfloop transitions, 41 changer transitions 49/312 dead transitions. [2025-03-09 06:22:25,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 312 transitions, 2331 flow [2025-03-09 06:22:25,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-03-09 06:22:25,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2025-03-09 06:22:25,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 625 transitions. [2025-03-09 06:22:25,795 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6975446428571429 [2025-03-09 06:22:25,795 INFO L175 Difference]: Start difference. First operand has 105 places, 60 transitions, 580 flow. Second operand 28 states and 625 transitions. [2025-03-09 06:22:25,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 312 transitions, 2331 flow [2025-03-09 06:22:25,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 312 transitions, 2251 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-09 06:22:25,830 INFO L231 Difference]: Finished difference. Result has 139 places, 76 transitions, 842 flow [2025-03-09 06:22:25,830 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=842, PETRI_PLACES=139, PETRI_TRANSITIONS=76} [2025-03-09 06:22:25,831 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 104 predicate places. [2025-03-09 06:22:25,831 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 76 transitions, 842 flow [2025-03-09 06:22:25,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 14.142857142857142) internal successors, (396), 28 states have internal predecessors, (396), 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) [2025-03-09 06:22:25,831 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:25,831 INFO L206 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:25,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-09 06:22:26,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-09 06:22:26,032 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:26,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:26,033 INFO L85 PathProgramCache]: Analyzing trace with hash 338949581, now seen corresponding path program 2 times [2025-03-09 06:22:26,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:26,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834358429] [2025-03-09 06:22:26,033 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:22:26,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:26,039 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 115 statements into 2 equivalence classes. [2025-03-09 06:22:26,058 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 115 of 115 statements. [2025-03-09 06:22:26,058 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:22:26,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:26,448 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 0 proven. 384 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:26,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:26,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834358429] [2025-03-09 06:22:26,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834358429] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:22:26,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905039957] [2025-03-09 06:22:26,449 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:22:26,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:22:26,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:22:26,451 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) [2025-03-09 06:22:26,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 06:22:26,533 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 115 statements into 2 equivalence classes. [2025-03-09 06:22:26,561 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 115 of 115 statements. [2025-03-09 06:22:26,562 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:22:26,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:26,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-09 06:22:26,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:22:26,695 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 0 proven. 384 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:26,696 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:22:27,229 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 0 proven. 384 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:27,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905039957] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:22:27,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:22:27,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2025-03-09 06:22:27,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690342119] [2025-03-09 06:22:27,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:22:27,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-03-09 06:22:27,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:27,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-03-09 06:22:27,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=1656, Unknown=0, NotChecked=0, Total=2256 [2025-03-09 06:22:27,232 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:27,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 76 transitions, 842 flow. Second operand has 48 states, 48 states have (on average 14.083333333333334) internal successors, (676), 48 states have internal predecessors, (676), 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) [2025-03-09 06:22:27,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:27,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:27,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:30,431 INFO L124 PetriNetUnfolderBase]: 7738/16353 cut-off events. [2025-03-09 06:22:30,431 INFO L125 PetriNetUnfolderBase]: For 137587/137629 co-relation queries the response was YES. [2025-03-09 06:22:30,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52495 conditions, 16353 events. 7738/16353 cut-off events. For 137587/137629 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 101935 event pairs, 119 based on Foata normal form. 672/17012 useless extension candidates. Maximal degree in co-relation 52435. Up to 2087 conditions per place. [2025-03-09 06:22:30,551 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 344 selfloop transitions, 72 changer transitions 89/515 dead transitions. [2025-03-09 06:22:30,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 515 transitions, 3897 flow [2025-03-09 06:22:30,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2025-03-09 06:22:30,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2025-03-09 06:22:30,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 1054 transitions. [2025-03-09 06:22:30,554 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7007978723404256 [2025-03-09 06:22:30,554 INFO L175 Difference]: Start difference. First operand has 139 places, 76 transitions, 842 flow. Second operand 47 states and 1054 transitions. [2025-03-09 06:22:30,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 515 transitions, 3897 flow [2025-03-09 06:22:30,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 515 transitions, 3751 flow, removed 0 selfloop flow, removed 11 redundant places. [2025-03-09 06:22:30,648 INFO L231 Difference]: Finished difference. Result has 197 places, 108 transitions, 1348 flow [2025-03-09 06:22:30,648 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=1348, PETRI_PLACES=197, PETRI_TRANSITIONS=108} [2025-03-09 06:22:30,649 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 162 predicate places. [2025-03-09 06:22:30,649 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 108 transitions, 1348 flow [2025-03-09 06:22:30,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 14.083333333333334) internal successors, (676), 48 states have internal predecessors, (676), 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) [2025-03-09 06:22:30,650 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:30,650 INFO L206 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 22, 22, 22, 22, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:30,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-09 06:22:30,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:22:30,855 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:30,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:30,856 INFO L85 PathProgramCache]: Analyzing trace with hash 33814385, now seen corresponding path program 3 times [2025-03-09 06:22:30,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:30,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020440973] [2025-03-09 06:22:30,856 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 06:22:30,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:30,872 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 225 statements into 17 equivalence classes. [2025-03-09 06:22:31,007 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) and asserted 220 of 225 statements. [2025-03-09 06:22:31,007 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2025-03-09 06:22:31,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:32,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1712 backedges. 1581 proven. 111 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-09 06:22:32,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:32,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020440973] [2025-03-09 06:22:32,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020440973] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:22:32,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099873333] [2025-03-09 06:22:32,673 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 06:22:32,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:22:32,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:22:32,675 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) [2025-03-09 06:22:32,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 06:22:32,723 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 225 statements into 17 equivalence classes. [2025-03-09 06:22:32,784 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) and asserted 220 of 225 statements. [2025-03-09 06:22:32,784 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2025-03-09 06:22:32,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:32,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-03-09 06:22:32,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:22:33,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1712 backedges. 1691 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-09 06:22:33,022 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:22:33,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099873333] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:33,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:22:33,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [45] total 47 [2025-03-09 06:22:33,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082000711] [2025-03-09 06:22:33,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:33,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-03-09 06:22:33,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:33,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-03-09 06:22:33,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=534, Invalid=1628, Unknown=0, NotChecked=0, Total=2162 [2025-03-09 06:22:33,065 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-03-09 06:22:33,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 108 transitions, 1348 flow. Second operand has 43 states, 43 states have (on average 11.162790697674419) internal successors, (480), 43 states have internal predecessors, (480), 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) [2025-03-09 06:22:33,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:33,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-03-09 06:22:33,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:23:00,154 INFO L124 PetriNetUnfolderBase]: 102864/174495 cut-off events. [2025-03-09 06:23:00,155 INFO L125 PetriNetUnfolderBase]: For 438732/438752 co-relation queries the response was YES. [2025-03-09 06:23:02,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 569618 conditions, 174495 events. 102864/174495 cut-off events. For 438732/438752 co-relation queries the response was YES. Maximal size of possible extension queue 1038. Compared 1431682 event pairs, 1025 based on Foata normal form. 1217/175695 useless extension candidates. Maximal degree in co-relation 569545. Up to 25671 conditions per place. [2025-03-09 06:23:02,784 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 0 selfloop transitions, 0 changer transitions 1776/1776 dead transitions. [2025-03-09 06:23:02,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 1776 transitions, 22052 flow [2025-03-09 06:23:02,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-03-09 06:23:02,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2025-03-09 06:23:02,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 868 transitions. [2025-03-09 06:23:02,786 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6308139534883721 [2025-03-09 06:23:02,787 INFO L175 Difference]: Start difference. First operand has 197 places, 108 transitions, 1348 flow. Second operand 43 states and 868 transitions. [2025-03-09 06:23:02,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 1776 transitions, 22052 flow [2025-03-09 06:23:05,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 1776 transitions, 15542 flow, removed 42 selfloop flow, removed 73 redundant places. [2025-03-09 06:23:05,726 INFO L231 Difference]: Finished difference. Result has 160 places, 0 transitions, 0 flow [2025-03-09 06:23:05,726 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=0, PETRI_PLACES=160, PETRI_TRANSITIONS=0} [2025-03-09 06:23:05,726 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 125 predicate places. [2025-03-09 06:23:05,726 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 0 transitions, 0 flow [2025-03-09 06:23:05,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 11.162790697674419) internal successors, (480), 43 states have internal predecessors, (480), 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) [2025-03-09 06:23:05,730 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2025-03-09 06:23:05,730 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2025-03-09 06:23:05,730 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2025-03-09 06:23:05,730 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2025-03-09 06:23:05,730 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2025-03-09 06:23:05,730 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2025-03-09 06:23:05,730 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2025-03-09 06:23:05,730 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2025-03-09 06:23:05,730 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2025-03-09 06:23:05,730 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2025-03-09 06:23:05,730 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2025-03-09 06:23:05,730 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2025-03-09 06:23:05,730 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2025-03-09 06:23:05,731 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2025-03-09 06:23:05,731 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2025-03-09 06:23:05,731 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2025-03-09 06:23:05,731 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2025-03-09 06:23:05,731 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2025-03-09 06:23:05,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-09 06:23:05,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:23:05,932 INFO L422 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:23:05,935 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-09 06:23:05,935 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-09 06:23:05,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.03 06:23:05 BasicIcfg [2025-03-09 06:23:05,941 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-09 06:23:05,942 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-09 06:23:05,942 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-09 06:23:05,942 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-09 06:23:05,942 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:22:16" (3/4) ... [2025-03-09 06:23:05,943 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-09 06:23:05,945 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t1 [2025-03-09 06:23:05,945 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t2 [2025-03-09 06:23:05,947 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2025-03-09 06:23:05,947 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-03-09 06:23:05,947 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-03-09 06:23:05,947 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-03-09 06:23:05,947 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-09 06:23:06,001 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-09 06:23:06,001 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-09 06:23:06,001 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-09 06:23:06,002 INFO L158 Benchmark]: Toolchain (without parser) took 50165.13ms. Allocated memory was 142.6MB in the beginning and 10.0GB in the end (delta: 9.9GB). Free memory was 109.0MB in the beginning and 6.9GB in the end (delta: -6.8GB). Peak memory consumption was 3.0GB. Max. memory is 16.1GB. [2025-03-09 06:23:06,002 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 129.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:23:06,003 INFO L158 Benchmark]: CACSL2BoogieTranslator took 377.84ms. Allocated memory is still 142.6MB. Free memory was 109.0MB in the beginning and 89.7MB in the end (delta: 19.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-09 06:23:06,004 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.95ms. Allocated memory is still 142.6MB. Free memory was 89.7MB in the beginning and 87.9MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 06:23:06,005 INFO L158 Benchmark]: Boogie Preprocessor took 33.91ms. Allocated memory is still 142.6MB. Free memory was 87.9MB in the beginning and 87.1MB in the end (delta: 859.1kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:23:06,005 INFO L158 Benchmark]: IcfgBuilder took 325.44ms. Allocated memory is still 142.6MB. Free memory was 87.1MB in the beginning and 66.0MB in the end (delta: 21.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-09 06:23:06,005 INFO L158 Benchmark]: TraceAbstraction took 49331.64ms. Allocated memory was 142.6MB in the beginning and 10.0GB in the end (delta: 9.9GB). Free memory was 66.0MB in the beginning and 6.9GB in the end (delta: -6.9GB). Peak memory consumption was 3.2GB. Max. memory is 16.1GB. [2025-03-09 06:23:06,006 INFO L158 Benchmark]: Witness Printer took 59.46ms. Allocated memory is still 10.0GB. Free memory was 6.9GB in the beginning and 6.9GB in the end (delta: 4.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:23:06,006 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 129.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 377.84ms. Allocated memory is still 142.6MB. Free memory was 109.0MB in the beginning and 89.7MB in the end (delta: 19.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.95ms. Allocated memory is still 142.6MB. Free memory was 89.7MB in the beginning and 87.9MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.91ms. Allocated memory is still 142.6MB. Free memory was 87.9MB in the beginning and 87.1MB in the end (delta: 859.1kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 325.44ms. Allocated memory is still 142.6MB. Free memory was 87.1MB in the beginning and 66.0MB in the end (delta: 21.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 49331.64ms. Allocated memory was 142.6MB in the beginning and 10.0GB in the end (delta: 9.9GB). Free memory was 66.0MB in the beginning and 6.9GB in the end (delta: -6.9GB). Peak memory consumption was 3.2GB. Max. memory is 16.1GB. * Witness Printer took 59.46ms. Allocated memory is still 10.0GB. Free memory was 6.9GB in the beginning and 6.9GB in the end (delta: 4.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: 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, 55 locations, 56 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: 49.2s, OverallIterations: 20, TraceHistogramMax: 23, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 42.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4312 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4284 mSDsluCounter, 92 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 76 mSDsCounter, 68 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5937 IncrementalHoareTripleChecker+Invalid, 6005 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 68 mSolverCounterUnsat, 16 mSDtfsCounter, 5937 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1026 GetRequests, 721 SyntacticMatches, 0 SemanticMatches, 305 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3386 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1348occurred in iteration=19, InterpolantAutomatonStates: 208, 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, 0.4s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 1120 NumberOfCodeBlocks, 1110 NumberOfCodeBlocksAsserted, 62 NumberOfCheckSat, 1342 ConstructedInterpolants, 0 QuantifiedInterpolants, 3914 SizeOfPredicates, 69 NumberOfNonLiveVariables, 1539 ConjunctsInSsa, 107 ConjunctsInUnsatCore, 33 InterpolantComputations, 15 PerfectInterpolantSequences, 3331/5028 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-09 06:23:06,022 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