/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.positions.where.we.compute.the.hoare.annotation All --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows ASSERTandASSUME -i ../../../trunk/examples/svcomp/pthread-theta/unwind1-1.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.empire2-owicki-f61efc6-m [2025-03-15 03:12:33,393 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-15 03:12:33,485 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2025-03-15 03:12:33,511 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-15 03:12:33,512 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-15 03:12:33,512 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-15 03:12:33,512 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-15 03:12:33,512 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-15 03:12:33,512 INFO L153 SettingsManager]: * Use SBE=true [2025-03-15 03:12:33,513 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-15 03:12:33,514 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-15 03:12:33,514 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-15 03:12:33,514 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-15 03:12:33,515 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-15 03:12:33,515 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-15 03:12:33,515 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-15 03:12:33,515 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-15 03:12:33,515 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-15 03:12:33,515 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-15 03:12:33,515 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-15 03:12:33,515 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-15 03:12:33,516 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-03-15 03:12:33,516 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-15 03:12:33,516 INFO L153 SettingsManager]: * To the following directory=./dump/ [2025-03-15 03:12:33,516 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-15 03:12:33,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-03-15 03:12:33,516 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-15 03:12:33,516 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-15 03:12:33,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-15 03:12:33,516 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-15 03:12:33,516 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-15 03:12:33,517 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-15 03:12:33,517 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> ASSERTandASSUME [2025-03-15 03:12:33,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-15 03:12:33,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-15 03:12:33,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-15 03:12:33,784 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-15 03:12:33,784 INFO L274 PluginConnector]: CDTParser initialized [2025-03-15 03:12:33,785 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-theta/unwind1-1.i [2025-03-15 03:12:34,964 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a024397ee/6b219de25ee44890bab8b72a15aad7d0/FLAGb3d831c68 [2025-03-15 03:12:35,216 INFO L384 CDTParser]: Found 1 translation units. [2025-03-15 03:12:35,216 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-theta/unwind1-1.i [2025-03-15 03:12:35,228 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a024397ee/6b219de25ee44890bab8b72a15aad7d0/FLAGb3d831c68 [2025-03-15 03:12:35,545 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a024397ee/6b219de25ee44890bab8b72a15aad7d0 [2025-03-15 03:12:35,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-15 03:12:35,550 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-03-15 03:12:35,551 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-15 03:12:35,551 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-15 03:12:35,555 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-15 03:12:35,555 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 03:12:35" (1/1) ... [2025-03-15 03:12:35,556 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b61a341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:12:35, skipping insertion in model container [2025-03-15 03:12:35,556 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 03:12:35" (1/1) ... [2025-03-15 03:12:35,589 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-15 03:12:35,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-15 03:12:35,837 INFO L200 MainTranslator]: Completed pre-run [2025-03-15 03:12:35,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-15 03:12:35,903 INFO L204 MainTranslator]: Completed translation [2025-03-15 03:12:35,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:12:35 WrapperNode [2025-03-15 03:12:35,904 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-15 03:12:35,904 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-15 03:12:35,905 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-15 03:12:35,905 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-15 03:12:35,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:12:35" (1/1) ... [2025-03-15 03:12:35,918 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:12:35" (1/1) ... [2025-03-15 03:12:35,932 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 55 [2025-03-15 03:12:35,933 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-15 03:12:35,933 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-15 03:12:35,935 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-15 03:12:35,935 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-15 03:12:35,939 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:12:35" (1/1) ... [2025-03-15 03:12:35,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:12:35" (1/1) ... [2025-03-15 03:12:35,943 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:12:35" (1/1) ... [2025-03-15 03:12:35,943 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:12:35" (1/1) ... [2025-03-15 03:12:35,950 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:12:35" (1/1) ... [2025-03-15 03:12:35,951 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:12:35" (1/1) ... [2025-03-15 03:12:35,953 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:12:35" (1/1) ... [2025-03-15 03:12:35,954 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:12:35" (1/1) ... [2025-03-15 03:12:35,954 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:12:35" (1/1) ... [2025-03-15 03:12:35,956 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-15 03:12:35,956 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-03-15 03:12:35,956 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-03-15 03:12:35,956 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-03-15 03:12:35,957 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:12:35" (1/1) ... [2025-03-15 03:12:35,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-03-15 03:12:35,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-15 03:12:35,985 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2025-03-15 03:12:36,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2025-03-15 03:12:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-15 03:12:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-03-15 03:12:36,024 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-03-15 03:12:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-03-15 03:12:36,024 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-03-15 03:12:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-15 03:12:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-15 03:12:36,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-15 03:12:36,025 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-15 03:12:36,129 INFO L234 CfgBuilder]: Building ICFG [2025-03-15 03:12:36,131 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-15 03:12:36,269 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-15 03:12:36,269 INFO L283 CfgBuilder]: Performing block encoding [2025-03-15 03:12:36,279 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-15 03:12:36,279 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-15 03:12:36,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 03:12:36 BoogieIcfgContainer [2025-03-15 03:12:36,280 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-03-15 03:12:36,282 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-15 03:12:36,282 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-15 03:12:36,286 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-15 03:12:36,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 03:12:35" (1/3) ... [2025-03-15 03:12:36,287 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2325adf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 03:12:36, skipping insertion in model container [2025-03-15 03:12:36,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 03:12:35" (2/3) ... [2025-03-15 03:12:36,287 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2325adf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 03:12:36, skipping insertion in model container [2025-03-15 03:12:36,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 03:12:36" (3/3) ... [2025-03-15 03:12:36,288 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind1-1.i [2025-03-15 03:12:36,302 INFO L303 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-15 03:12:36,304 INFO L169 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind1-1.i that has 3 procedures, 81 locations, 1 initial locations, 1 loop locations, and 4 error locations. [2025-03-15 03:12:36,304 INFO L581 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-15 03:12:36,363 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-15 03:12:36,395 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-15 03:12:36,407 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=All, 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;@1656bbf8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-15 03:12:36,407 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2025-03-15 03:12:36,435 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-15 03:12:36,435 INFO L124 PetriNetUnfolderBase]: 1/39 cut-off events. [2025-03-15 03:12:36,436 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-15 03:12:36,437 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-15 03:12:36,437 INFO L221 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-15 03:12:36,437 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2025-03-15 03:12:36,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-15 03:12:36,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1040557575, now seen corresponding path program 1 times [2025-03-15 03:12:36,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-15 03:12:36,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176108191] [2025-03-15 03:12:36,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-15 03:12:36,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-15 03:12:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-15 03:12:36,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-15 03:12:36,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-15 03:12:36,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176108191] [2025-03-15 03:12:36,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176108191] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-15 03:12:36,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-15 03:12:36,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-15 03:12:36,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489210700] [2025-03-15 03:12:36,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-15 03:12:36,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-15 03:12:36,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-15 03:12:36,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-15 03:12:36,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-15 03:12:36,709 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 85 [2025-03-15 03:12:36,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 85 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2025-03-15 03:12:36,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-15 03:12:36,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 85 [2025-03-15 03:12:36,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-15 03:12:36,773 INFO L124 PetriNetUnfolderBase]: 13/144 cut-off events. [2025-03-15 03:12:36,773 INFO L125 PetriNetUnfolderBase]: For 14/15 co-relation queries the response was YES. [2025-03-15 03:12:36,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 144 events. 13/144 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 447 event pairs, 7 based on Foata normal form. 8/136 useless extension candidates. Maximal degree in co-relation 140. Up to 27 conditions per place. [2025-03-15 03:12:36,779 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 9 selfloop transitions, 1 changer transitions 17/76 dead transitions. [2025-03-15 03:12:36,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 76 transitions, 188 flow [2025-03-15 03:12:36,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-15 03:12:36,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-15 03:12:36,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2025-03-15 03:12:36,788 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.8549019607843137 [2025-03-15 03:12:36,791 INFO L298 CegarLoopForPetriNet]: 87 programPoint places, -4 predicate places. [2025-03-15 03:12:36,791 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 76 transitions, 188 flow [2025-03-15 03:12:36,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2025-03-15 03:12:36,792 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-15 03:12:36,792 INFO L221 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-15 03:12:36,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-15 03:12:36,792 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2025-03-15 03:12:36,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-15 03:12:36,793 INFO L85 PathProgramCache]: Analyzing trace with hash 62383552, now seen corresponding path program 1 times [2025-03-15 03:12:36,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-15 03:12:36,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800621660] [2025-03-15 03:12:36,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-15 03:12:36,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-15 03:12:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-15 03:12:36,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-15 03:12:36,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-15 03:12:36,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800621660] [2025-03-15 03:12:36,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800621660] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-15 03:12:36,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-15 03:12:36,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-15 03:12:36,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178094954] [2025-03-15 03:12:36,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-15 03:12:36,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-15 03:12:36,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-15 03:12:36,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-15 03:12:36,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-15 03:12:36,976 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 85 [2025-03-15 03:12:36,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 76 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 66.8) internal successors, (334), 5 states have internal predecessors, (334), 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) [2025-03-15 03:12:36,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-15 03:12:36,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 85 [2025-03-15 03:12:36,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-15 03:12:37,100 INFO L124 PetriNetUnfolderBase]: 32/209 cut-off events. [2025-03-15 03:12:37,101 INFO L125 PetriNetUnfolderBase]: For 114/119 co-relation queries the response was YES. [2025-03-15 03:12:37,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 209 events. 32/209 cut-off events. For 114/119 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 840 event pairs, 11 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 224. Up to 52 conditions per place. [2025-03-15 03:12:37,102 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 14 selfloop transitions, 5 changer transitions 29/93 dead transitions. [2025-03-15 03:12:37,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 93 transitions, 320 flow [2025-03-15 03:12:37,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-15 03:12:37,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-15 03:12:37,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 490 transitions. [2025-03-15 03:12:37,105 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.8235294117647058 [2025-03-15 03:12:37,105 INFO L298 CegarLoopForPetriNet]: 87 programPoint places, 2 predicate places. [2025-03-15 03:12:37,106 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 93 transitions, 320 flow [2025-03-15 03:12:37,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.8) internal successors, (334), 5 states have internal predecessors, (334), 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) [2025-03-15 03:12:37,106 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-15 03:12:37,106 INFO L221 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-15 03:12:37,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-15 03:12:37,106 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2025-03-15 03:12:37,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-15 03:12:37,107 INFO L85 PathProgramCache]: Analyzing trace with hash 876457948, now seen corresponding path program 1 times [2025-03-15 03:12:37,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-15 03:12:37,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791825626] [2025-03-15 03:12:37,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-15 03:12:37,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-15 03:12:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-15 03:12:37,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-15 03:12:37,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-15 03:12:37,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791825626] [2025-03-15 03:12:37,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791825626] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-15 03:12:37,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-15 03:12:37,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-15 03:12:37,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348747531] [2025-03-15 03:12:37,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-15 03:12:37,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-15 03:12:37,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-15 03:12:37,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-15 03:12:37,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-15 03:12:37,199 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 85 [2025-03-15 03:12:37,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 93 transitions, 320 flow. Second operand has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 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) [2025-03-15 03:12:37,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-15 03:12:37,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 85 [2025-03-15 03:12:37,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-15 03:12:37,297 INFO L124 PetriNetUnfolderBase]: 44/248 cut-off events. [2025-03-15 03:12:37,298 INFO L125 PetriNetUnfolderBase]: For 275/280 co-relation queries the response was YES. [2025-03-15 03:12:37,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 548 conditions, 248 events. 44/248 cut-off events. For 275/280 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1075 event pairs, 15 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 382. Up to 67 conditions per place. [2025-03-15 03:12:37,299 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 21 selfloop transitions, 5 changer transitions 32/105 dead transitions. [2025-03-15 03:12:37,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 105 transitions, 462 flow [2025-03-15 03:12:37,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-15 03:12:37,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-15 03:12:37,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 355 transitions. [2025-03-15 03:12:37,302 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.8352941176470589 [2025-03-15 03:12:37,303 INFO L298 CegarLoopForPetriNet]: 87 programPoint places, 6 predicate places. [2025-03-15 03:12:37,304 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 105 transitions, 462 flow [2025-03-15 03:12:37,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 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) [2025-03-15 03:12:37,304 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-15 03:12:37,304 INFO L221 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-15 03:12:37,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-15 03:12:37,304 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2025-03-15 03:12:37,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-15 03:12:37,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1381877136, now seen corresponding path program 1 times [2025-03-15 03:12:37,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-15 03:12:37,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979912161] [2025-03-15 03:12:37,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-15 03:12:37,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-15 03:12:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-15 03:12:37,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-15 03:12:37,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-15 03:12:37,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979912161] [2025-03-15 03:12:37,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979912161] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-15 03:12:37,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824498974] [2025-03-15 03:12:37,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-15 03:12:37,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-15 03:12:37,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-15 03:12:37,416 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) [2025-03-15 03:12:37,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-15 03:12:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-15 03:12:37,490 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-15 03:12:37,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-15 03:12:37,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-15 03:12:37,678 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-15 03:12:37,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824498974] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-15 03:12:37,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-15 03:12:37,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 12 [2025-03-15 03:12:37,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666277775] [2025-03-15 03:12:37,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-15 03:12:37,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-15 03:12:37,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-15 03:12:37,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-15 03:12:37,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-15 03:12:37,680 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 85 [2025-03-15 03:12:37,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 105 transitions, 462 flow. Second operand has 8 states, 8 states have (on average 55.5) internal successors, (444), 8 states have internal predecessors, (444), 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) [2025-03-15 03:12:37,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-15 03:12:37,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 85 [2025-03-15 03:12:37,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-15 03:12:37,902 INFO L124 PetriNetUnfolderBase]: 69/398 cut-off events. [2025-03-15 03:12:37,903 INFO L125 PetriNetUnfolderBase]: For 606/622 co-relation queries the response was YES. [2025-03-15 03:12:37,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1069 conditions, 398 events. 69/398 cut-off events. For 606/622 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2303 event pairs, 17 based on Foata normal form. 1/374 useless extension candidates. Maximal degree in co-relation 514. Up to 106 conditions per place. [2025-03-15 03:12:37,907 INFO L140 encePairwiseOnDemand]: 76/85 looper letters, 31 selfloop transitions, 3 changer transitions 71/138 dead transitions. [2025-03-15 03:12:37,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 138 transitions, 884 flow [2025-03-15 03:12:37,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-15 03:12:37,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-15 03:12:37,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 647 transitions. [2025-03-15 03:12:37,910 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.6919786096256685 [2025-03-15 03:12:37,911 INFO L298 CegarLoopForPetriNet]: 87 programPoint places, 16 predicate places. [2025-03-15 03:12:37,911 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 138 transitions, 884 flow [2025-03-15 03:12:37,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 55.5) internal successors, (444), 8 states have internal predecessors, (444), 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) [2025-03-15 03:12:37,911 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-15 03:12:37,912 INFO L221 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-15 03:12:37,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-15 03:12:38,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-15 03:12:38,114 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2025-03-15 03:12:38,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-15 03:12:38,116 INFO L85 PathProgramCache]: Analyzing trace with hash -69913658, now seen corresponding path program 1 times [2025-03-15 03:12:38,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-15 03:12:38,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444385816] [2025-03-15 03:12:38,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-15 03:12:38,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-15 03:12:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-15 03:12:38,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-15 03:12:38,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-15 03:12:38,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444385816] [2025-03-15 03:12:38,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444385816] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-15 03:12:38,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223656121] [2025-03-15 03:12:38,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-15 03:12:38,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-15 03:12:38,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-15 03:12:38,223 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) [2025-03-15 03:12:38,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-15 03:12:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-15 03:12:38,276 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-15 03:12:38,277 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-15 03:12:38,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-15 03:12:38,304 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-15 03:12:38,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223656121] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-15 03:12:38,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-15 03:12:38,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-15 03:12:38,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433574388] [2025-03-15 03:12:38,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-15 03:12:38,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-15 03:12:38,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-15 03:12:38,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-15 03:12:38,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-15 03:12:38,306 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 85 [2025-03-15 03:12:38,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 138 transitions, 884 flow. Second operand has 6 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 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) [2025-03-15 03:12:38,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-15 03:12:38,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 85 [2025-03-15 03:12:38,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-15 03:12:38,410 INFO L124 PetriNetUnfolderBase]: 68/395 cut-off events. [2025-03-15 03:12:38,410 INFO L125 PetriNetUnfolderBase]: For 790/809 co-relation queries the response was YES. [2025-03-15 03:12:38,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 395 events. 68/395 cut-off events. For 790/809 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2265 event pairs, 7 based on Foata normal form. 1/373 useless extension candidates. Maximal degree in co-relation 579. Up to 105 conditions per place. [2025-03-15 03:12:38,413 INFO L140 encePairwiseOnDemand]: 80/85 looper letters, 19 selfloop transitions, 6 changer transitions 71/139 dead transitions. [2025-03-15 03:12:38,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 139 transitions, 1038 flow [2025-03-15 03:12:38,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-15 03:12:38,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-15 03:12:38,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 485 transitions. [2025-03-15 03:12:38,415 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.8151260504201681 [2025-03-15 03:12:38,417 INFO L298 CegarLoopForPetriNet]: 87 programPoint places, 21 predicate places. [2025-03-15 03:12:38,417 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 139 transitions, 1038 flow [2025-03-15 03:12:38,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 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) [2025-03-15 03:12:38,417 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-15 03:12:38,417 INFO L221 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-15 03:12:38,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-15 03:12:38,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-15 03:12:38,618 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2025-03-15 03:12:38,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-15 03:12:38,619 INFO L85 PathProgramCache]: Analyzing trace with hash 690517503, now seen corresponding path program 1 times [2025-03-15 03:12:38,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-15 03:12:38,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839617521] [2025-03-15 03:12:38,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-15 03:12:38,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-15 03:12:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-15 03:12:38,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-15 03:12:38,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-15 03:12:38,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839617521] [2025-03-15 03:12:38,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839617521] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-15 03:12:38,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477486550] [2025-03-15 03:12:38,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-15 03:12:38,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-15 03:12:38,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-15 03:12:38,711 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) [2025-03-15 03:12:38,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-15 03:12:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-15 03:12:38,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-15 03:12:38,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-15 03:12:38,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-15 03:12:38,803 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-15 03:12:38,858 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-15 03:12:38,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477486550] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-15 03:12:38,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-15 03:12:38,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-15 03:12:38,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240774266] [2025-03-15 03:12:38,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-15 03:12:38,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-15 03:12:38,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-15 03:12:38,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-15 03:12:38,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-15 03:12:38,861 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 85 [2025-03-15 03:12:38,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 139 transitions, 1038 flow. Second operand has 12 states, 12 states have (on average 67.58333333333333) internal successors, (811), 12 states have internal predecessors, (811), 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) [2025-03-15 03:12:38,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-15 03:12:38,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 85 [2025-03-15 03:12:38,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-15 03:12:39,064 INFO L124 PetriNetUnfolderBase]: 91/539 cut-off events. [2025-03-15 03:12:39,064 INFO L125 PetriNetUnfolderBase]: For 1279/1302 co-relation queries the response was YES. [2025-03-15 03:12:39,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1889 conditions, 539 events. 91/539 cut-off events. For 1279/1302 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3153 event pairs, 7 based on Foata normal form. 1/505 useless extension candidates. Maximal degree in co-relation 1166. Up to 157 conditions per place. [2025-03-15 03:12:39,067 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 37 selfloop transitions, 14 changer transitions 80/174 dead transitions. [2025-03-15 03:12:39,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 174 transitions, 1642 flow [2025-03-15 03:12:39,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-15 03:12:39,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-15 03:12:39,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 975 transitions. [2025-03-15 03:12:39,071 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.819327731092437 [2025-03-15 03:12:39,071 INFO L298 CegarLoopForPetriNet]: 87 programPoint places, 34 predicate places. [2025-03-15 03:12:39,071 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 174 transitions, 1642 flow [2025-03-15 03:12:39,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 67.58333333333333) internal successors, (811), 12 states have internal predecessors, (811), 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) [2025-03-15 03:12:39,073 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-15 03:12:39,073 INFO L221 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-15 03:12:39,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-15 03:12:39,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-15 03:12:39,274 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2025-03-15 03:12:39,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-15 03:12:39,275 INFO L85 PathProgramCache]: Analyzing trace with hash 338865259, now seen corresponding path program 2 times [2025-03-15 03:12:39,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-15 03:12:39,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35254283] [2025-03-15 03:12:39,275 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-15 03:12:39,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-15 03:12:39,293 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-15 03:12:39,294 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-15 03:12:39,356 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-03-15 03:12:39,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-15 03:12:39,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35254283] [2025-03-15 03:12:39,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35254283] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-15 03:12:39,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175165591] [2025-03-15 03:12:39,357 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-15 03:12:39,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-15 03:12:39,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-15 03:12:39,359 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) [2025-03-15 03:12:39,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-15 03:12:39,414 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-15 03:12:39,414 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-15 03:12:39,415 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-15 03:12:39,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-15 03:12:39,513 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-03-15 03:12:39,513 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-15 03:12:39,637 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-03-15 03:12:39,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175165591] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-15 03:12:39,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-15 03:12:39,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2025-03-15 03:12:39,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743884405] [2025-03-15 03:12:39,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-15 03:12:39,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-15 03:12:39,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-15 03:12:39,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-15 03:12:39,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-03-15 03:12:39,641 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 85 [2025-03-15 03:12:39,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 174 transitions, 1642 flow. Second operand has 13 states, 13 states have (on average 57.07692307692308) internal successors, (742), 13 states have internal predecessors, (742), 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) [2025-03-15 03:12:39,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-15 03:12:39,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 85 [2025-03-15 03:12:39,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-15 03:12:39,833 INFO L124 PetriNetUnfolderBase]: 90/536 cut-off events. [2025-03-15 03:12:39,833 INFO L125 PetriNetUnfolderBase]: For 1513/1553 co-relation queries the response was YES. [2025-03-15 03:12:39,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2133 conditions, 536 events. 90/536 cut-off events. For 1513/1553 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3081 event pairs, 6 based on Foata normal form. 3/507 useless extension candidates. Maximal degree in co-relation 1313. Up to 156 conditions per place. [2025-03-15 03:12:39,835 INFO L140 encePairwiseOnDemand]: 75/85 looper letters, 0 selfloop transitions, 0 changer transitions 179/179 dead transitions. [2025-03-15 03:12:39,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 179 transitions, 1992 flow [2025-03-15 03:12:39,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-15 03:12:39,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-15 03:12:39,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 572 transitions. [2025-03-15 03:12:39,838 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.6729411764705883 [2025-03-15 03:12:39,839 INFO L298 CegarLoopForPetriNet]: 87 programPoint places, 42 predicate places. [2025-03-15 03:12:39,840 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 179 transitions, 1992 flow [2025-03-15 03:12:39,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 57.07692307692308) internal successors, (742), 13 states have internal predecessors, (742), 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) [2025-03-15 03:12:39,846 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/unwind1-1.i_petrified1_AllErrorsAtOnce [2025-03-15 03:12:39,873 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2025-03-15 03:12:39,873 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 10 remaining) [2025-03-15 03:12:39,874 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2025-03-15 03:12:39,874 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2025-03-15 03:12:39,874 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2025-03-15 03:12:39,874 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2025-03-15 03:12:39,874 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2025-03-15 03:12:39,874 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2025-03-15 03:12:39,874 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2025-03-15 03:12:39,874 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2025-03-15 03:12:39,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-15 03:12:40,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-15 03:12:40,075 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2025-03-15 03:12:40,079 INFO L328 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-15 03:12:40,080 INFO L188 ceAbstractionStarter]: Computing trace abstraction results [2025-03-15 03:12:40,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 03:12:40 BasicIcfg [2025-03-15 03:12:40,084 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-15 03:12:40,085 INFO L158 Benchmark]: Toolchain (without parser) took 4536.63ms. Allocated memory was 71.3MB in the beginning and 88.1MB in the end (delta: 16.8MB). Free memory was 42.7MB in the beginning and 21.9MB in the end (delta: 20.8MB). Peak memory consumption was 34.4MB. Max. memory is 8.0GB. [2025-03-15 03:12:40,085 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 71.3MB. Free memory is still 33.2MB. There was no memory consumed. Max. memory is 8.0GB. [2025-03-15 03:12:40,085 INFO L158 Benchmark]: CACSL2BoogieTranslator took 353.11ms. Allocated memory is still 71.3MB. Free memory was 42.6MB in the beginning and 22.9MB in the end (delta: 19.7MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2025-03-15 03:12:40,085 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.46ms. Allocated memory is still 71.3MB. Free memory was 22.9MB in the beginning and 21.2MB in the end (delta: 1.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-03-15 03:12:40,085 INFO L158 Benchmark]: Boogie Preprocessor took 22.37ms. Allocated memory is still 71.3MB. Free memory was 21.2MB in the beginning and 20.3MB in the end (delta: 973.7kB). There was no memory consumed. Max. memory is 8.0GB. [2025-03-15 03:12:40,085 INFO L158 Benchmark]: RCFGBuilder took 323.63ms. Allocated memory is still 71.3MB. Free memory was 20.3MB in the beginning and 35.1MB in the end (delta: -14.8MB). Peak memory consumption was 6.8MB. Max. memory is 8.0GB. [2025-03-15 03:12:40,086 INFO L158 Benchmark]: TraceAbstraction took 3802.25ms. Allocated memory was 71.3MB in the beginning and 88.1MB in the end (delta: 16.8MB). Free memory was 33.8MB in the beginning and 21.9MB in the end (delta: 11.9MB). Peak memory consumption was 27.7MB. Max. memory is 8.0GB. [2025-03-15 03:12:40,087 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 71.3MB. Free memory is still 33.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 353.11ms. Allocated memory is still 71.3MB. Free memory was 42.6MB in the beginning and 22.9MB in the end (delta: 19.7MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.46ms. Allocated memory is still 71.3MB. Free memory was 22.9MB in the beginning and 21.2MB in the end (delta: 1.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.37ms. Allocated memory is still 71.3MB. Free memory was 21.2MB in the beginning and 20.3MB in the end (delta: 973.7kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 323.63ms. Allocated memory is still 71.3MB. Free memory was 20.3MB in the beginning and 35.1MB in the end (delta: -14.8MB). Peak memory consumption was 6.8MB. Max. memory is 8.0GB. * TraceAbstraction took 3802.25ms. Allocated memory was 71.3MB in the beginning and 88.1MB in the end (delta: 16.8MB). Free memory was 33.8MB in the beginning and 21.9MB in the end (delta: 11.9MB). Peak memory consumption was 27.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 760]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 760]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: 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, 125 locations, 10 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: 3.7s, OverallIterations: 7, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 351 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 351 mSDsluCounter, 133 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 89 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 440 IncrementalHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 44 mSDtfsCounter, 440 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 399 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1992occurred in iteration=7, InterpolantAutomatonStates: 57, 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, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 553 NumberOfCodeBlocks, 505 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 662 ConstructedInterpolants, 0 QuantifiedInterpolants, 1330 SizeOfPredicates, 17 NumberOfNonLiveVariables, 403 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 126/180 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-15 03:12:40,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...