/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 ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis FINITE_AUTOMATA -i ../../../trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 18:45:14,682 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 18:45:14,722 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-13 18:45:14,725 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 18:45:14,726 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 18:45:14,740 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 18:45:14,740 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 18:45:14,740 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 18:45:14,741 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 18:45:14,741 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 18:45:14,741 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 18:45:14,741 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 18:45:14,741 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 18:45:14,741 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 18:45:14,741 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 18:45:14,741 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 18:45:14,741 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 18:45:14,741 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 18:45:14,741 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 18:45:14,741 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 18:45:14,742 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 18:45:14,742 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 18:45:14,742 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 18:45:14,742 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 18:45:14,742 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 18:45:14,742 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 18:45:14,742 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 18:45:14,742 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 18:45:14,742 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 18:45:14,742 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 18:45:14,742 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 18:45:14,742 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 18:45:14,742 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 18:45:14,742 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 18:45:14,742 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 18:45:14,742 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 18:45:14,742 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 18:45:14,743 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 18:45:14,743 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 18:45:14,743 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 18:45:14,743 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 18:45:14,743 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 18:45:14,743 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 18:45:14,743 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 18:45:14,743 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 18:45:14,743 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 18:45:14,743 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 18:45:14,743 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> FINITE_AUTOMATA [2025-04-13 18:45:14,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 18:45:14,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 18:45:14,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 18:45:14,985 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 18:45:14,986 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 18:45:14,987 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c [2025-04-13 18:45:16,376 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3e4084d8/8358a316e2af4e998109a0c070d7d2f3/FLAGb15fd7a91 [2025-04-13 18:45:16,597 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 18:45:16,597 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c [2025-04-13 18:45:16,603 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3e4084d8/8358a316e2af4e998109a0c070d7d2f3/FLAGb15fd7a91 [2025-04-13 18:45:17,426 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3e4084d8/8358a316e2af4e998109a0c070d7d2f3 [2025-04-13 18:45:17,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 18:45:17,430 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 18:45:17,431 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 18:45:17,431 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 18:45:17,433 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 18:45:17,434 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 06:45:17" (1/1) ... [2025-04-13 18:45:17,435 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@668bb436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:45:17, skipping insertion in model container [2025-04-13 18:45:17,435 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 06:45:17" (1/1) ... [2025-04-13 18:45:17,445 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 18:45:17,582 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c[2464,2477] [2025-04-13 18:45:17,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 18:45:17,595 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 18:45:17,613 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c[2464,2477] [2025-04-13 18:45:17,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 18:45:17,624 INFO L204 MainTranslator]: Completed translation [2025-04-13 18:45:17,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:45:17 WrapperNode [2025-04-13 18:45:17,626 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 18:45:17,627 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 18:45:17,627 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 18:45:17,627 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 18:45:17,632 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:45:17" (1/1) ... [2025-04-13 18:45:17,638 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:45:17" (1/1) ... [2025-04-13 18:45:17,659 INFO L138 Inliner]: procedures = 23, calls = 23, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 120 [2025-04-13 18:45:17,659 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 18:45:17,660 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 18:45:17,660 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 18:45:17,660 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 18:45:17,667 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:45:17" (1/1) ... [2025-04-13 18:45:17,667 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:45:17" (1/1) ... [2025-04-13 18:45:17,673 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:45:17" (1/1) ... [2025-04-13 18:45:17,683 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-04-13 18:45:17,683 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:45:17" (1/1) ... [2025-04-13 18:45:17,683 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:45:17" (1/1) ... [2025-04-13 18:45:17,687 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:45:17" (1/1) ... [2025-04-13 18:45:17,687 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:45:17" (1/1) ... [2025-04-13 18:45:17,689 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:45:17" (1/1) ... [2025-04-13 18:45:17,690 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:45:17" (1/1) ... [2025-04-13 18:45:17,691 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:45:17" (1/1) ... [2025-04-13 18:45:17,693 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 18:45:17,694 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 18:45:17,694 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 18:45:17,694 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 18:45:17,694 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:45:17" (1/1) ... [2025-04-13 18:45:17,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 18:45:17,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:17,725 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) [2025-04-13 18:45:17,727 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 [2025-04-13 18:45:17,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 18:45:17,744 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 18:45:17,744 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 18:45:17,744 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 18:45:17,744 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 18:45:17,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 18:45:17,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 18:45:17,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 18:45:17,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 18:45:17,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 18:45:17,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 18:45:17,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-13 18:45:17,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 18:45:17,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 18:45:17,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 18:45:17,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 18:45:17,745 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 18:45:17,811 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 18:45:17,813 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 18:45:17,987 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 18:45:17,987 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 18:45:17,987 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 18:45:18,163 INFO L313 CfgBuilder]: Removed 2 assume(true) statements. [2025-04-13 18:45:18,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 06:45:18 BoogieIcfgContainer [2025-04-13 18:45:18,166 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 18:45:18,168 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 18:45:18,168 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 18:45:18,171 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 18:45:18,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 06:45:17" (1/3) ... [2025-04-13 18:45:18,171 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411d1b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 06:45:18, skipping insertion in model container [2025-04-13 18:45:18,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:45:17" (2/3) ... [2025-04-13 18:45:18,172 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411d1b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 06:45:18, skipping insertion in model container [2025-04-13 18:45:18,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 06:45:18" (3/3) ... [2025-04-13 18:45:18,172 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-simple-queue.wvr.c [2025-04-13 18:45:18,182 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 18:45:18,183 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-simple-queue.wvr.c that has 3 procedures, 19 locations, 19 edges, 1 initial locations, 3 loop locations, and 1 error locations. [2025-04-13 18:45:18,183 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 18:45:18,226 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-13 18:45:18,248 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 21 transitions, 56 flow [2025-04-13 18:45:18,265 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 49 states, 48 states have (on average 2.2916666666666665) internal successors, (110), 48 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:45:18,283 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 18:45:18,293 INFO L340 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=FINITE_AUTOMATA, 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;@3acc7116, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 18:45:18,293 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 18:45:18,295 INFO L278 IsEmpty]: Start isEmpty. Operand has 49 states, 48 states have (on average 2.2916666666666665) internal successors, (110), 48 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:45:18,298 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-04-13 18:45:18,298 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:18,298 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:18,299 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:18,302 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:18,302 INFO L85 PathProgramCache]: Analyzing trace with hash 651960493, now seen corresponding path program 1 times [2025-04-13 18:45:18,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:18,307 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065353457] [2025-04-13 18:45:18,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:45:18,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:18,374 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-13 18:45:18,403 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 18:45:18,403 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:45:18,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:18,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:18,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:18,513 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065353457] [2025-04-13 18:45:18,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065353457] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:45:18,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:45:18,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-13 18:45:18,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623155206] [2025-04-13 18:45:18,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:45:18,519 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 18:45:18,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:18,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 18:45:18,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 18:45:18,532 INFO L87 Difference]: Start difference. First operand has 49 states, 48 states have (on average 2.2916666666666665) internal successors, (110), 48 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2025-04-13 18:45:18,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:18,578 INFO L93 Difference]: Finished difference Result 78 states and 178 transitions. [2025-04-13 18:45:18,578 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 18:45:18,579 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) Word has length 13 [2025-04-13 18:45:18,579 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:18,585 INFO L225 Difference]: With dead ends: 78 [2025-04-13 18:45:18,585 INFO L226 Difference]: Without dead ends: 67 [2025-04-13 18:45:18,587 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 18:45:18,591 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:18,591 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 3 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 18:45:18,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2025-04-13 18:45:18,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 58. [2025-04-13 18:45:18,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 2.3157894736842106) internal successors, (132), 57 states have internal predecessors, (132), 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) [2025-04-13 18:45:18,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 132 transitions. [2025-04-13 18:45:18,618 INFO L79 Accepts]: Start accepts. Automaton has 58 states and 132 transitions. Word has length 13 [2025-04-13 18:45:18,618 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:18,618 INFO L485 AbstractCegarLoop]: Abstraction has 58 states and 132 transitions. [2025-04-13 18:45:18,618 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2025-04-13 18:45:18,618 INFO L278 IsEmpty]: Start isEmpty. Operand 58 states and 132 transitions. [2025-04-13 18:45:18,618 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 18:45:18,619 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:18,619 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:18,619 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 18:45:18,619 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:18,619 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:18,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1093974667, now seen corresponding path program 1 times [2025-04-13 18:45:18,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:18,620 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000659967] [2025-04-13 18:45:18,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:45:18,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:18,627 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 18:45:18,635 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 18:45:18,635 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:45:18,635 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:18,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:18,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:18,724 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000659967] [2025-04-13 18:45:18,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000659967] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:45:18,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:45:18,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 18:45:18,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080364743] [2025-04-13 18:45:18,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:45:18,725 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 18:45:18,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:18,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 18:45:18,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 18:45:18,726 INFO L87 Difference]: Start difference. First operand 58 states and 132 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 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) [2025-04-13 18:45:18,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:18,770 INFO L93 Difference]: Finished difference Result 110 states and 253 transitions. [2025-04-13 18:45:18,771 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 18:45:18,771 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 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) Word has length 15 [2025-04-13 18:45:18,771 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:18,772 INFO L225 Difference]: With dead ends: 110 [2025-04-13 18:45:18,772 INFO L226 Difference]: Without dead ends: 70 [2025-04-13 18:45:18,772 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 18:45:18,773 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:18,773 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 18:45:18,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2025-04-13 18:45:18,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2025-04-13 18:45:18,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 2.2318840579710146) internal successors, (154), 69 states have internal predecessors, (154), 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) [2025-04-13 18:45:18,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 154 transitions. [2025-04-13 18:45:18,785 INFO L79 Accepts]: Start accepts. Automaton has 70 states and 154 transitions. Word has length 15 [2025-04-13 18:45:18,785 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:18,785 INFO L485 AbstractCegarLoop]: Abstraction has 70 states and 154 transitions. [2025-04-13 18:45:18,785 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 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) [2025-04-13 18:45:18,785 INFO L278 IsEmpty]: Start isEmpty. Operand 70 states and 154 transitions. [2025-04-13 18:45:18,785 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:45:18,786 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:18,786 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:18,786 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 18:45:18,786 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:18,786 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:18,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1805074357, now seen corresponding path program 1 times [2025-04-13 18:45:18,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:18,786 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6915224] [2025-04-13 18:45:18,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:45:18,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:18,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 18:45:18,811 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:45:18,811 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:45:18,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:18,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:18,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:18,936 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6915224] [2025-04-13 18:45:18,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6915224] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:45:18,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:45:18,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 18:45:18,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275089446] [2025-04-13 18:45:18,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:45:18,936 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 18:45:18,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:18,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 18:45:18,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 18:45:18,938 INFO L87 Difference]: Start difference. First operand 70 states and 154 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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) [2025-04-13 18:45:18,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:18,994 INFO L93 Difference]: Finished difference Result 139 states and 307 transitions. [2025-04-13 18:45:18,995 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 18:45:18,995 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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) Word has length 17 [2025-04-13 18:45:18,995 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:18,995 INFO L225 Difference]: With dead ends: 139 [2025-04-13 18:45:18,995 INFO L226 Difference]: Without dead ends: 71 [2025-04-13 18:45:18,996 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 18:45:18,996 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:18,996 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 18:45:18,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-04-13 18:45:19,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2025-04-13 18:45:19,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 2.2142857142857144) internal successors, (155), 70 states have internal predecessors, (155), 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) [2025-04-13 18:45:19,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 155 transitions. [2025-04-13 18:45:19,005 INFO L79 Accepts]: Start accepts. Automaton has 71 states and 155 transitions. Word has length 17 [2025-04-13 18:45:19,005 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:19,005 INFO L485 AbstractCegarLoop]: Abstraction has 71 states and 155 transitions. [2025-04-13 18:45:19,007 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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) [2025-04-13 18:45:19,007 INFO L278 IsEmpty]: Start isEmpty. Operand 71 states and 155 transitions. [2025-04-13 18:45:19,007 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:45:19,007 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:19,007 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:19,007 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 18:45:19,007 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:19,008 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:19,008 INFO L85 PathProgramCache]: Analyzing trace with hash -279005872, now seen corresponding path program 1 times [2025-04-13 18:45:19,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:19,008 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279164112] [2025-04-13 18:45:19,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:45:19,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:19,020 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-13 18:45:19,044 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:45:19,045 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:45:19,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:19,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:19,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:19,418 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279164112] [2025-04-13 18:45:19,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279164112] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:19,419 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976255051] [2025-04-13 18:45:19,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:45:19,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:19,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:19,422 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) [2025-04-13 18:45:19,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-13 18:45:19,470 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-13 18:45:19,491 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:45:19,491 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:45:19,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:19,496 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-04-13 18:45:19,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:19,556 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-04-13 18:45:19,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:19,698 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:19,943 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2025-04-13 18:45:19,958 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:45:19,958 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 37 [2025-04-13 18:45:20,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:20,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976255051] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:20,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:20,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2025-04-13 18:45:20,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206755842] [2025-04-13 18:45:20,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:20,010 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 18:45:20,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:20,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 18:45:20,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2025-04-13 18:45:20,011 INFO L87 Difference]: Start difference. First operand 71 states and 155 transitions. Second operand has 15 states, 14 states have (on average 3.0) internal successors, (42), 14 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) [2025-04-13 18:45:20,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:20,309 INFO L93 Difference]: Finished difference Result 169 states and 378 transitions. [2025-04-13 18:45:20,309 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 18:45:20,310 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.0) internal successors, (42), 14 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) Word has length 18 [2025-04-13 18:45:20,310 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:20,310 INFO L225 Difference]: With dead ends: 169 [2025-04-13 18:45:20,310 INFO L226 Difference]: Without dead ends: 79 [2025-04-13 18:45:20,311 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2025-04-13 18:45:20,311 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 67 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:20,311 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 19 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:45:20,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2025-04-13 18:45:20,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 72. [2025-04-13 18:45:20,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 2.1971830985915495) internal successors, (156), 71 states have internal predecessors, (156), 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) [2025-04-13 18:45:20,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 156 transitions. [2025-04-13 18:45:20,321 INFO L79 Accepts]: Start accepts. Automaton has 72 states and 156 transitions. Word has length 18 [2025-04-13 18:45:20,321 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:20,321 INFO L485 AbstractCegarLoop]: Abstraction has 72 states and 156 transitions. [2025-04-13 18:45:20,321 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.0) internal successors, (42), 14 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) [2025-04-13 18:45:20,321 INFO L278 IsEmpty]: Start isEmpty. Operand 72 states and 156 transitions. [2025-04-13 18:45:20,322 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:45:20,322 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:20,322 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:20,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-04-13 18:45:20,522 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:20,523 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:20,523 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:20,523 INFO L85 PathProgramCache]: Analyzing trace with hash -673112853, now seen corresponding path program 2 times [2025-04-13 18:45:20,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:20,523 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579539308] [2025-04-13 18:45:20,523 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:45:20,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:20,532 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:45:20,549 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:45:20,550 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:45:20,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:20,597 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:45:20,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:20,597 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579539308] [2025-04-13 18:45:20,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579539308] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:20,598 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104992245] [2025-04-13 18:45:20,598 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:45:20,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:20,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:20,601 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) [2025-04-13 18:45:20,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-13 18:45:20,645 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:45:20,665 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:45:20,665 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:45:20,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:20,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-13 18:45:20,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:20,698 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:45:20,698 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:20,712 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:45:20,712 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2025-04-13 18:45:20,725 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:45:20,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104992245] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:20,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:20,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2025-04-13 18:45:20,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409885020] [2025-04-13 18:45:20,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:20,726 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 18:45:20,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:20,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 18:45:20,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-13 18:45:20,726 INFO L87 Difference]: Start difference. First operand 72 states and 156 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2025-04-13 18:45:20,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:20,798 INFO L93 Difference]: Finished difference Result 102 states and 226 transitions. [2025-04-13 18:45:20,798 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 18:45:20,798 INFO L79 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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) Word has length 19 [2025-04-13 18:45:20,798 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:20,799 INFO L225 Difference]: With dead ends: 102 [2025-04-13 18:45:20,799 INFO L226 Difference]: Without dead ends: 93 [2025-04-13 18:45:20,799 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-04-13 18:45:20,800 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 30 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:20,800 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 9 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:45:20,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2025-04-13 18:45:20,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 86. [2025-04-13 18:45:20,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.235294117647059) internal successors, (190), 85 states have internal predecessors, (190), 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) [2025-04-13 18:45:20,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 190 transitions. [2025-04-13 18:45:20,811 INFO L79 Accepts]: Start accepts. Automaton has 86 states and 190 transitions. Word has length 19 [2025-04-13 18:45:20,811 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:20,811 INFO L485 AbstractCegarLoop]: Abstraction has 86 states and 190 transitions. [2025-04-13 18:45:20,812 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2025-04-13 18:45:20,812 INFO L278 IsEmpty]: Start isEmpty. Operand 86 states and 190 transitions. [2025-04-13 18:45:20,812 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:45:20,812 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:20,812 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:20,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-04-13 18:45:21,012 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:21,013 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:21,013 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:21,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1498019405, now seen corresponding path program 3 times [2025-04-13 18:45:21,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:21,013 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380013714] [2025-04-13 18:45:21,013 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:45:21,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:21,020 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:45:21,026 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:45:21,026 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:45:21,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:21,079 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 18:45:21,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:21,079 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380013714] [2025-04-13 18:45:21,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380013714] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:21,079 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898782902] [2025-04-13 18:45:21,079 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:45:21,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:21,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:21,081 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) [2025-04-13 18:45:21,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-13 18:45:21,121 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:45:21,137 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:45:21,137 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:45:21,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:21,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-13 18:45:21,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:21,157 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 18:45:21,157 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:21,216 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:45:21,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898782902] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:21,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:21,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 4] total 6 [2025-04-13 18:45:21,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191893194] [2025-04-13 18:45:21,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:21,216 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 18:45:21,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:21,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 18:45:21,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-04-13 18:45:21,217 INFO L87 Difference]: Start difference. First operand 86 states and 190 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:45:21,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:21,265 INFO L93 Difference]: Finished difference Result 196 states and 446 transitions. [2025-04-13 18:45:21,265 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 18:45:21,266 INFO L79 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-04-13 18:45:21,266 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:21,267 INFO L225 Difference]: With dead ends: 196 [2025-04-13 18:45:21,267 INFO L226 Difference]: Without dead ends: 156 [2025-04-13 18:45:21,267 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-04-13 18:45:21,267 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 48 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:21,267 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 4 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 18:45:21,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2025-04-13 18:45:21,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 138. [2025-04-13 18:45:21,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 2.3576642335766422) internal successors, (323), 137 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:45:21,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 323 transitions. [2025-04-13 18:45:21,280 INFO L79 Accepts]: Start accepts. Automaton has 138 states and 323 transitions. Word has length 21 [2025-04-13 18:45:21,280 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:21,280 INFO L485 AbstractCegarLoop]: Abstraction has 138 states and 323 transitions. [2025-04-13 18:45:21,280 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:45:21,280 INFO L278 IsEmpty]: Start isEmpty. Operand 138 states and 323 transitions. [2025-04-13 18:45:21,281 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-04-13 18:45:21,281 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:21,281 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:21,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-04-13 18:45:21,481 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:21,482 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:21,482 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:21,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1500205269, now seen corresponding path program 4 times [2025-04-13 18:45:21,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:21,482 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321108851] [2025-04-13 18:45:21,482 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:45:21,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:21,488 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-04-13 18:45:21,497 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:45:21,498 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:45:21,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:21,598 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:45:21,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:21,599 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321108851] [2025-04-13 18:45:21,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321108851] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:21,599 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213753753] [2025-04-13 18:45:21,599 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:45:21,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:21,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:21,602 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) [2025-04-13 18:45:21,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-04-13 18:45:21,645 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-04-13 18:45:21,661 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:45:21,662 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:45:21,662 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:21,663 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-04-13 18:45:21,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:21,697 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-04-13 18:45:21,823 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:45:21,823 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2025-04-13 18:45:21,830 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:21,830 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:22,089 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2025-04-13 18:45:22,097 INFO L325 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-04-13 18:45:22,097 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 43 [2025-04-13 18:45:22,170 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:22,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213753753] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:22,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:22,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 18 [2025-04-13 18:45:22,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991405606] [2025-04-13 18:45:22,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:22,171 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 18:45:22,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:22,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 18:45:22,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2025-04-13 18:45:22,172 INFO L87 Difference]: Start difference. First operand 138 states and 323 transitions. Second operand has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 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) [2025-04-13 18:45:22,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:22,826 INFO L93 Difference]: Finished difference Result 506 states and 1182 transitions. [2025-04-13 18:45:22,827 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-04-13 18:45:22,827 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 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) Word has length 23 [2025-04-13 18:45:22,827 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:22,829 INFO L225 Difference]: With dead ends: 506 [2025-04-13 18:45:22,829 INFO L226 Difference]: Without dead ends: 314 [2025-04-13 18:45:22,830 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=1030, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 18:45:22,831 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 325 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:22,831 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 34 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:45:22,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2025-04-13 18:45:22,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 199. [2025-04-13 18:45:22,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.3585858585858586) internal successors, (467), 198 states have internal predecessors, (467), 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) [2025-04-13 18:45:22,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 467 transitions. [2025-04-13 18:45:22,863 INFO L79 Accepts]: Start accepts. Automaton has 199 states and 467 transitions. Word has length 23 [2025-04-13 18:45:22,864 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:22,864 INFO L485 AbstractCegarLoop]: Abstraction has 199 states and 467 transitions. [2025-04-13 18:45:22,864 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 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) [2025-04-13 18:45:22,864 INFO L278 IsEmpty]: Start isEmpty. Operand 199 states and 467 transitions. [2025-04-13 18:45:22,864 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-04-13 18:45:22,864 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:22,865 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:22,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-04-13 18:45:23,065 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:23,065 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:23,066 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:23,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1965243829, now seen corresponding path program 5 times [2025-04-13 18:45:23,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:23,066 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191498433] [2025-04-13 18:45:23,066 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:45:23,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:23,074 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 3 equivalence classes. [2025-04-13 18:45:23,084 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:45:23,084 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:45:23,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:23,512 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:23,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:23,513 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191498433] [2025-04-13 18:45:23,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191498433] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:23,513 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631130596] [2025-04-13 18:45:23,513 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:45:23,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:23,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:23,514 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) [2025-04-13 18:45:23,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-04-13 18:45:23,557 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 3 equivalence classes. [2025-04-13 18:45:23,573 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:45:23,574 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:45:23,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:23,575 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-04-13 18:45:23,576 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:23,765 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:45:23,765 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2025-04-13 18:45:23,771 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:23,771 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:23,808 INFO L325 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-04-13 18:45:23,808 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2025-04-13 18:45:24,077 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:24,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631130596] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:24,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:24,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2025-04-13 18:45:24,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293725153] [2025-04-13 18:45:24,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:24,078 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 18:45:24,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:24,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 18:45:24,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2025-04-13 18:45:24,079 INFO L87 Difference]: Start difference. First operand 199 states and 467 transitions. Second operand has 23 states, 22 states have (on average 2.5) internal successors, (55), 22 states have internal predecessors, (55), 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) [2025-04-13 18:45:24,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:24,648 INFO L93 Difference]: Finished difference Result 300 states and 663 transitions. [2025-04-13 18:45:24,648 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-13 18:45:24,648 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.5) internal successors, (55), 22 states have internal predecessors, (55), 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) Word has length 23 [2025-04-13 18:45:24,648 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:24,649 INFO L225 Difference]: With dead ends: 300 [2025-04-13 18:45:24,649 INFO L226 Difference]: Without dead ends: 280 [2025-04-13 18:45:24,650 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=218, Invalid=904, Unknown=0, NotChecked=0, Total=1122 [2025-04-13 18:45:24,650 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 160 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:24,651 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 50 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:45:24,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2025-04-13 18:45:24,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 218. [2025-04-13 18:45:24,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.3225806451612905) internal successors, (504), 217 states have internal predecessors, (504), 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) [2025-04-13 18:45:24,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 504 transitions. [2025-04-13 18:45:24,673 INFO L79 Accepts]: Start accepts. Automaton has 218 states and 504 transitions. Word has length 23 [2025-04-13 18:45:24,674 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:24,674 INFO L485 AbstractCegarLoop]: Abstraction has 218 states and 504 transitions. [2025-04-13 18:45:24,674 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.5) internal successors, (55), 22 states have internal predecessors, (55), 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) [2025-04-13 18:45:24,675 INFO L278 IsEmpty]: Start isEmpty. Operand 218 states and 504 transitions. [2025-04-13 18:45:24,675 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-04-13 18:45:24,675 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:24,675 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:24,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-04-13 18:45:24,875 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:24,876 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:24,876 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:24,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1857540944, now seen corresponding path program 6 times [2025-04-13 18:45:24,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:24,876 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713092508] [2025-04-13 18:45:24,876 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:45:24,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:24,885 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 24 statements into 3 equivalence classes. [2025-04-13 18:45:24,898 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 24 of 24 statements. [2025-04-13 18:45:24,898 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:45:24,898 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:24,990 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:45:24,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:24,990 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713092508] [2025-04-13 18:45:24,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713092508] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:24,990 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882385289] [2025-04-13 18:45:24,990 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:45:24,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:24,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:24,993 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) [2025-04-13 18:45:24,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-04-13 18:45:25,035 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 24 statements into 3 equivalence classes. [2025-04-13 18:45:25,066 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 24 of 24 statements. [2025-04-13 18:45:25,067 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:45:25,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:25,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-13 18:45:25,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:25,097 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:45:25,097 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:25,110 INFO L325 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-04-13 18:45:25,111 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2025-04-13 18:45:25,125 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:45:25,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882385289] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:25,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:25,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2025-04-13 18:45:25,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403232361] [2025-04-13 18:45:25,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:25,125 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 18:45:25,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:25,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 18:45:25,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-04-13 18:45:25,126 INFO L87 Difference]: Start difference. First operand 218 states and 504 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2025-04-13 18:45:25,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:25,240 INFO L93 Difference]: Finished difference Result 257 states and 587 transitions. [2025-04-13 18:45:25,241 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 18:45:25,241 INFO L79 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) Word has length 24 [2025-04-13 18:45:25,241 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:25,242 INFO L225 Difference]: With dead ends: 257 [2025-04-13 18:45:25,242 INFO L226 Difference]: Without dead ends: 248 [2025-04-13 18:45:25,242 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-04-13 18:45:25,243 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 62 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:25,243 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 14 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:45:25,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2025-04-13 18:45:25,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 205. [2025-04-13 18:45:25,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 2.3186274509803924) internal successors, (473), 204 states have internal predecessors, (473), 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) [2025-04-13 18:45:25,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 473 transitions. [2025-04-13 18:45:25,265 INFO L79 Accepts]: Start accepts. Automaton has 205 states and 473 transitions. Word has length 24 [2025-04-13 18:45:25,265 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:25,265 INFO L485 AbstractCegarLoop]: Abstraction has 205 states and 473 transitions. [2025-04-13 18:45:25,265 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2025-04-13 18:45:25,265 INFO L278 IsEmpty]: Start isEmpty. Operand 205 states and 473 transitions. [2025-04-13 18:45:25,266 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-04-13 18:45:25,266 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:25,266 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:25,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-04-13 18:45:25,466 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:25,466 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:25,467 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:25,467 INFO L85 PathProgramCache]: Analyzing trace with hash 148609421, now seen corresponding path program 7 times [2025-04-13 18:45:25,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:25,467 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820196442] [2025-04-13 18:45:25,467 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:45:25,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:25,475 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-04-13 18:45:25,481 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:45:25,481 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:45:25,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:25,565 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 18:45:25,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:25,565 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820196442] [2025-04-13 18:45:25,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820196442] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:25,565 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492526165] [2025-04-13 18:45:25,565 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:45:25,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:25,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:25,567 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) [2025-04-13 18:45:25,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-04-13 18:45:25,610 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-04-13 18:45:25,624 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:45:25,625 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:45:25,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:25,626 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 18:45:25,626 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:25,676 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-04-13 18:45:25,676 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:25,764 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:45:25,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492526165] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:25,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:25,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 6] total 15 [2025-04-13 18:45:25,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713683286] [2025-04-13 18:45:25,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:25,765 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 18:45:25,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:25,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 18:45:25,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:45:25,766 INFO L87 Difference]: Start difference. First operand 205 states and 473 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 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) [2025-04-13 18:45:25,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:25,998 INFO L93 Difference]: Finished difference Result 455 states and 1037 transitions. [2025-04-13 18:45:25,999 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-04-13 18:45:25,999 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 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) Word has length 25 [2025-04-13 18:45:25,999 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:26,000 INFO L225 Difference]: With dead ends: 455 [2025-04-13 18:45:26,000 INFO L226 Difference]: Without dead ends: 239 [2025-04-13 18:45:26,001 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2025-04-13 18:45:26,001 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 117 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:26,001 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 14 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:45:26,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2025-04-13 18:45:26,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 212. [2025-04-13 18:45:26,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 2.4075829383886256) internal successors, (508), 211 states have internal predecessors, (508), 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) [2025-04-13 18:45:26,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 508 transitions. [2025-04-13 18:45:26,018 INFO L79 Accepts]: Start accepts. Automaton has 212 states and 508 transitions. Word has length 25 [2025-04-13 18:45:26,018 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:26,018 INFO L485 AbstractCegarLoop]: Abstraction has 212 states and 508 transitions. [2025-04-13 18:45:26,018 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 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) [2025-04-13 18:45:26,018 INFO L278 IsEmpty]: Start isEmpty. Operand 212 states and 508 transitions. [2025-04-13 18:45:26,019 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-04-13 18:45:26,019 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:26,020 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:26,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-04-13 18:45:26,220 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:26,220 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:26,221 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:26,221 INFO L85 PathProgramCache]: Analyzing trace with hash -324031728, now seen corresponding path program 8 times [2025-04-13 18:45:26,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:26,221 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278222155] [2025-04-13 18:45:26,221 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:45:26,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:26,228 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-04-13 18:45:26,236 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 18:45:26,236 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:45:26,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:26,454 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:26,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:26,454 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278222155] [2025-04-13 18:45:26,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278222155] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:26,455 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921406789] [2025-04-13 18:45:26,455 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:45:26,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:26,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:26,456 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) [2025-04-13 18:45:26,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-04-13 18:45:26,502 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-04-13 18:45:26,518 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 18:45:26,518 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:45:26,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:26,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-04-13 18:45:26,521 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:26,562 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-04-13 18:45:26,720 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:45:26,721 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2025-04-13 18:45:26,725 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:26,725 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:27,106 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2025-04-13 18:45:27,121 INFO L325 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-04-13 18:45:27,121 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 43 [2025-04-13 18:45:27,253 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:27,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921406789] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:27,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:27,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2025-04-13 18:45:27,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237234314] [2025-04-13 18:45:27,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:27,254 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-04-13 18:45:27,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:27,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-04-13 18:45:27,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=867, Unknown=0, NotChecked=0, Total=1056 [2025-04-13 18:45:27,255 INFO L87 Difference]: Start difference. First operand 212 states and 508 transitions. Second operand has 33 states, 32 states have (on average 2.25) internal successors, (72), 32 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:45:28,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:28,618 INFO L93 Difference]: Finished difference Result 1011 states and 2406 transitions. [2025-04-13 18:45:28,619 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-04-13 18:45:28,619 INFO L79 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.25) internal successors, (72), 32 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2025-04-13 18:45:28,619 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:28,622 INFO L225 Difference]: With dead ends: 1011 [2025-04-13 18:45:28,622 INFO L226 Difference]: Without dead ends: 812 [2025-04-13 18:45:28,623 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=636, Invalid=2786, Unknown=0, NotChecked=0, Total=3422 [2025-04-13 18:45:28,624 INFO L437 NwaCegarLoop]: 5 mSDtfsCounter, 416 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:28,624 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 62 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 18:45:28,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2025-04-13 18:45:28,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 349. [2025-04-13 18:45:28,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 2.4827586206896552) internal successors, (864), 348 states have internal predecessors, (864), 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) [2025-04-13 18:45:28,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 864 transitions. [2025-04-13 18:45:28,658 INFO L79 Accepts]: Start accepts. Automaton has 349 states and 864 transitions. Word has length 28 [2025-04-13 18:45:28,658 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:28,658 INFO L485 AbstractCegarLoop]: Abstraction has 349 states and 864 transitions. [2025-04-13 18:45:28,658 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.25) internal successors, (72), 32 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:45:28,658 INFO L278 IsEmpty]: Start isEmpty. Operand 349 states and 864 transitions. [2025-04-13 18:45:28,659 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-04-13 18:45:28,659 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:28,659 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:28,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-04-13 18:45:28,859 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-04-13 18:45:28,860 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:28,860 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:28,860 INFO L85 PathProgramCache]: Analyzing trace with hash -789070288, now seen corresponding path program 9 times [2025-04-13 18:45:28,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:28,860 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699336428] [2025-04-13 18:45:28,860 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:45:28,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:28,867 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 4 equivalence classes. [2025-04-13 18:45:28,890 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 18:45:28,890 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 18:45:28,890 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:29,056 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 18:45:29,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:29,056 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699336428] [2025-04-13 18:45:29,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699336428] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:29,057 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631976738] [2025-04-13 18:45:29,057 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:45:29,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:29,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:29,059 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:45:29,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-04-13 18:45:29,102 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 4 equivalence classes. [2025-04-13 18:45:29,155 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 18:45:29,155 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 18:45:29,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:29,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-04-13 18:45:29,158 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:29,206 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-04-13 18:45:29,390 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:45:29,391 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:29,845 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2025-04-13 18:45:29,853 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:45:29,854 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 37 [2025-04-13 18:45:29,970 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:45:29,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631976738] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:29,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:29,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 27 [2025-04-13 18:45:29,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676506725] [2025-04-13 18:45:29,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:29,971 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-04-13 18:45:29,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:29,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-04-13 18:45:29,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=633, Unknown=0, NotChecked=0, Total=812 [2025-04-13 18:45:29,972 INFO L87 Difference]: Start difference. First operand 349 states and 864 transitions. Second operand has 29 states, 28 states have (on average 2.5) internal successors, (70), 28 states have internal predecessors, (70), 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) [2025-04-13 18:45:30,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:30,587 INFO L93 Difference]: Finished difference Result 742 states and 1754 transitions. [2025-04-13 18:45:30,587 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-04-13 18:45:30,587 INFO L79 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.5) internal successors, (70), 28 states have internal predecessors, (70), 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) Word has length 28 [2025-04-13 18:45:30,587 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:30,589 INFO L225 Difference]: With dead ends: 742 [2025-04-13 18:45:30,589 INFO L226 Difference]: Without dead ends: 252 [2025-04-13 18:45:30,590 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=417, Invalid=1305, Unknown=0, NotChecked=0, Total=1722 [2025-04-13 18:45:30,590 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 155 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:30,590 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 42 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:45:30,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2025-04-13 18:45:30,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 213. [2025-04-13 18:45:30,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 2.400943396226415) internal successors, (509), 212 states have internal predecessors, (509), 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) [2025-04-13 18:45:30,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 509 transitions. [2025-04-13 18:45:30,607 INFO L79 Accepts]: Start accepts. Automaton has 213 states and 509 transitions. Word has length 28 [2025-04-13 18:45:30,607 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:30,607 INFO L485 AbstractCegarLoop]: Abstraction has 213 states and 509 transitions. [2025-04-13 18:45:30,607 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.5) internal successors, (70), 28 states have internal predecessors, (70), 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) [2025-04-13 18:45:30,607 INFO L278 IsEmpty]: Start isEmpty. Operand 213 states and 509 transitions. [2025-04-13 18:45:30,607 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-04-13 18:45:30,607 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:30,607 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:30,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-04-13 18:45:30,812 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:30,812 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:30,812 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:30,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1156552459, now seen corresponding path program 10 times [2025-04-13 18:45:30,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:30,812 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969137205] [2025-04-13 18:45:30,812 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:45:30,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:30,818 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 29 statements into 2 equivalence classes. [2025-04-13 18:45:30,829 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 18:45:30,829 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:45:30,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:30,922 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-04-13 18:45:30,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:30,922 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969137205] [2025-04-13 18:45:30,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969137205] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:30,922 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176099751] [2025-04-13 18:45:30,922 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:45:30,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:30,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:30,924 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:45:30,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-04-13 18:45:30,970 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 29 statements into 2 equivalence classes. [2025-04-13 18:45:30,990 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 18:45:30,990 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:45:30,990 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:30,991 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-04-13 18:45:30,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:31,055 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 18:45:31,055 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:31,067 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:45:31,067 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2025-04-13 18:45:31,087 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-04-13 18:45:31,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176099751] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:31,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:31,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 5] total 11 [2025-04-13 18:45:31,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299674926] [2025-04-13 18:45:31,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:31,087 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 18:45:31,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:31,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 18:45:31,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2025-04-13 18:45:31,088 INFO L87 Difference]: Start difference. First operand 213 states and 509 transitions. Second operand has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 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) [2025-04-13 18:45:31,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:31,318 INFO L93 Difference]: Finished difference Result 482 states and 1112 transitions. [2025-04-13 18:45:31,319 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-13 18:45:31,319 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 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) Word has length 29 [2025-04-13 18:45:31,319 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:31,321 INFO L225 Difference]: With dead ends: 482 [2025-04-13 18:45:31,321 INFO L226 Difference]: Without dead ends: 410 [2025-04-13 18:45:31,322 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:45:31,322 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 202 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:31,322 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 23 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:45:31,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2025-04-13 18:45:31,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 231. [2025-04-13 18:45:31,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 2.491304347826087) internal successors, (573), 230 states have internal predecessors, (573), 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) [2025-04-13 18:45:31,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 573 transitions. [2025-04-13 18:45:31,342 INFO L79 Accepts]: Start accepts. Automaton has 231 states and 573 transitions. Word has length 29 [2025-04-13 18:45:31,342 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:31,343 INFO L485 AbstractCegarLoop]: Abstraction has 231 states and 573 transitions. [2025-04-13 18:45:31,343 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 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) [2025-04-13 18:45:31,343 INFO L278 IsEmpty]: Start isEmpty. Operand 231 states and 573 transitions. [2025-04-13 18:45:31,343 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-04-13 18:45:31,343 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:31,343 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:31,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-04-13 18:45:31,544 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-04-13 18:45:31,544 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:31,544 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:31,544 INFO L85 PathProgramCache]: Analyzing trace with hash 691513899, now seen corresponding path program 11 times [2025-04-13 18:45:31,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:31,544 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494364127] [2025-04-13 18:45:31,544 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:45:31,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:31,552 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 29 statements into 4 equivalence classes. [2025-04-13 18:45:31,573 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 18:45:31,573 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-04-13 18:45:31,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:31,672 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-04-13 18:45:31,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:31,672 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494364127] [2025-04-13 18:45:31,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494364127] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:31,673 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726146195] [2025-04-13 18:45:31,673 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:45:31,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:31,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:31,675 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:45:31,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-04-13 18:45:31,726 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 29 statements into 4 equivalence classes. [2025-04-13 18:45:31,748 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 18:45:31,748 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-04-13 18:45:31,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:31,749 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-04-13 18:45:31,750 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:31,803 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:45:31,804 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:31,816 INFO L325 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-04-13 18:45:31,816 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2025-04-13 18:45:31,835 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-04-13 18:45:31,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726146195] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:31,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:31,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 6] total 9 [2025-04-13 18:45:31,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677777590] [2025-04-13 18:45:31,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:31,836 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-13 18:45:31,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:31,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-13 18:45:31,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2025-04-13 18:45:31,836 INFO L87 Difference]: Start difference. First operand 231 states and 573 transitions. Second operand has 11 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 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) [2025-04-13 18:45:32,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:32,010 INFO L93 Difference]: Finished difference Result 353 states and 841 transitions. [2025-04-13 18:45:32,010 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 18:45:32,010 INFO L79 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 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) Word has length 29 [2025-04-13 18:45:32,011 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:32,012 INFO L225 Difference]: With dead ends: 353 [2025-04-13 18:45:32,012 INFO L226 Difference]: Without dead ends: 271 [2025-04-13 18:45:32,013 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2025-04-13 18:45:32,013 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 111 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:32,013 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 30 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:45:32,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2025-04-13 18:45:32,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 134. [2025-04-13 18:45:32,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 2.2706766917293235) internal successors, (302), 133 states have internal predecessors, (302), 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) [2025-04-13 18:45:32,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 302 transitions. [2025-04-13 18:45:32,026 INFO L79 Accepts]: Start accepts. Automaton has 134 states and 302 transitions. Word has length 29 [2025-04-13 18:45:32,026 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:32,026 INFO L485 AbstractCegarLoop]: Abstraction has 134 states and 302 transitions. [2025-04-13 18:45:32,027 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 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) [2025-04-13 18:45:32,027 INFO L278 IsEmpty]: Start isEmpty. Operand 134 states and 302 transitions. [2025-04-13 18:45:32,027 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-04-13 18:45:32,027 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:32,027 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:32,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-04-13 18:45:32,227 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-04-13 18:45:32,228 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:32,228 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:32,228 INFO L85 PathProgramCache]: Analyzing trace with hash -405333749, now seen corresponding path program 12 times [2025-04-13 18:45:32,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:32,228 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831445612] [2025-04-13 18:45:32,228 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:45:32,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:32,234 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 29 statements into 4 equivalence classes. [2025-04-13 18:45:32,244 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 18:45:32,245 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 18:45:32,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:32,352 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 18:45:32,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:32,352 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831445612] [2025-04-13 18:45:32,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831445612] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:32,352 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188304842] [2025-04-13 18:45:32,352 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:45:32,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:32,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:32,354 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:45:32,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-04-13 18:45:32,400 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 29 statements into 4 equivalence classes. [2025-04-13 18:45:32,432 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 18:45:32,432 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 18:45:32,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:32,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-04-13 18:45:32,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:32,515 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:45:32,515 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:32,536 INFO L325 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-04-13 18:45:32,536 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2025-04-13 18:45:32,550 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 18:45:32,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188304842] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:32,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:32,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 7] total 16 [2025-04-13 18:45:32,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83373847] [2025-04-13 18:45:32,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:32,550 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:45:32,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:32,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:45:32,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:45:32,551 INFO L87 Difference]: Start difference. First operand 134 states and 302 transitions. Second operand has 18 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 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) [2025-04-13 18:45:33,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:33,059 INFO L93 Difference]: Finished difference Result 789 states and 1862 transitions. [2025-04-13 18:45:33,059 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-04-13 18:45:33,059 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 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) Word has length 29 [2025-04-13 18:45:33,059 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:33,061 INFO L225 Difference]: With dead ends: 789 [2025-04-13 18:45:33,061 INFO L226 Difference]: Without dead ends: 519 [2025-04-13 18:45:33,062 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=418, Invalid=1304, Unknown=0, NotChecked=0, Total=1722 [2025-04-13 18:45:33,062 INFO L437 NwaCegarLoop]: 5 mSDtfsCounter, 433 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:33,063 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 34 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:45:33,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2025-04-13 18:45:33,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 277. [2025-04-13 18:45:33,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 2.496376811594203) internal successors, (689), 276 states have internal predecessors, (689), 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) [2025-04-13 18:45:33,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 689 transitions. [2025-04-13 18:45:33,086 INFO L79 Accepts]: Start accepts. Automaton has 277 states and 689 transitions. Word has length 29 [2025-04-13 18:45:33,087 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:33,087 INFO L485 AbstractCegarLoop]: Abstraction has 277 states and 689 transitions. [2025-04-13 18:45:33,087 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 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) [2025-04-13 18:45:33,087 INFO L278 IsEmpty]: Start isEmpty. Operand 277 states and 689 transitions. [2025-04-13 18:45:33,087 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-04-13 18:45:33,087 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:33,087 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:33,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-04-13 18:45:33,288 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-04-13 18:45:33,288 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:33,288 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:33,288 INFO L85 PathProgramCache]: Analyzing trace with hash 4632683, now seen corresponding path program 13 times [2025-04-13 18:45:33,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:33,288 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301431478] [2025-04-13 18:45:33,288 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:45:33,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:33,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-04-13 18:45:33,305 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-04-13 18:45:33,306 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:45:33,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:33,750 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:33,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:33,751 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301431478] [2025-04-13 18:45:33,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301431478] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:33,751 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998050528] [2025-04-13 18:45:33,751 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:45:33,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:33,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:33,753 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:45:33,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-04-13 18:45:33,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-04-13 18:45:33,822 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-04-13 18:45:33,823 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:45:33,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:33,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 18:45:33,825 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:34,188 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:45:34,189 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2025-04-13 18:45:34,194 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:34,194 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:34,311 INFO L325 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-04-13 18:45:34,311 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2025-04-13 18:45:34,729 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:34,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998050528] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:34,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:34,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 40 [2025-04-13 18:45:34,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259997113] [2025-04-13 18:45:34,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:34,730 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-04-13 18:45:34,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:34,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-04-13 18:45:34,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1514, Unknown=0, NotChecked=0, Total=1722 [2025-04-13 18:45:34,731 INFO L87 Difference]: Start difference. First operand 277 states and 689 transitions. Second operand has 42 states, 41 states have (on average 2.1219512195121952) internal successors, (87), 41 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:45:36,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:36,821 INFO L93 Difference]: Finished difference Result 1206 states and 2930 transitions. [2025-04-13 18:45:36,821 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-04-13 18:45:36,821 INFO L79 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.1219512195121952) internal successors, (87), 41 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2025-04-13 18:45:36,821 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:36,825 INFO L225 Difference]: With dead ends: 1206 [2025-04-13 18:45:36,825 INFO L226 Difference]: Without dead ends: 1126 [2025-04-13 18:45:36,827 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=753, Invalid=4077, Unknown=0, NotChecked=0, Total=4830 [2025-04-13 18:45:36,827 INFO L437 NwaCegarLoop]: 6 mSDtfsCounter, 420 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 2075 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 2131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:36,827 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 110 Invalid, 2131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2075 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-04-13 18:45:36,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2025-04-13 18:45:36,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 678. [2025-04-13 18:45:36,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 677 states have (on average 2.6646971935007384) internal successors, (1804), 677 states have internal predecessors, (1804), 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) [2025-04-13 18:45:36,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1804 transitions. [2025-04-13 18:45:36,899 INFO L79 Accepts]: Start accepts. Automaton has 678 states and 1804 transitions. Word has length 33 [2025-04-13 18:45:36,899 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:36,899 INFO L485 AbstractCegarLoop]: Abstraction has 678 states and 1804 transitions. [2025-04-13 18:45:36,900 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.1219512195121952) internal successors, (87), 41 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:45:36,900 INFO L278 IsEmpty]: Start isEmpty. Operand 678 states and 1804 transitions. [2025-04-13 18:45:36,901 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-04-13 18:45:36,901 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:36,901 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:36,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-04-13 18:45:37,105 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-04-13 18:45:37,105 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:37,105 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:37,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1514678480, now seen corresponding path program 14 times [2025-04-13 18:45:37,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:37,105 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172223581] [2025-04-13 18:45:37,105 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:45:37,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:37,112 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-04-13 18:45:37,127 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-04-13 18:45:37,127 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:45:37,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:37,292 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 7 proven. 33 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-04-13 18:45:37,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:37,292 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172223581] [2025-04-13 18:45:37,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172223581] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:37,292 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517911277] [2025-04-13 18:45:37,292 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:45:37,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:37,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:37,294 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:45:37,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-04-13 18:45:37,348 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-04-13 18:45:37,369 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-04-13 18:45:37,369 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:45:37,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:37,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-04-13 18:45:37,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:37,487 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:45:37,487 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:37,506 INFO L325 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-04-13 18:45:37,506 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2025-04-13 18:45:37,525 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-04-13 18:45:37,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517911277] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:37,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:37,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 9] total 21 [2025-04-13 18:45:37,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269657239] [2025-04-13 18:45:37,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:37,525 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 18:45:37,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:37,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 18:45:37,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2025-04-13 18:45:37,526 INFO L87 Difference]: Start difference. First operand 678 states and 1804 transitions. Second operand has 23 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 22 states have internal predecessors, (59), 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) [2025-04-13 18:45:38,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:38,564 INFO L93 Difference]: Finished difference Result 3041 states and 7733 transitions. [2025-04-13 18:45:38,564 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-04-13 18:45:38,564 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 22 states have internal predecessors, (59), 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) Word has length 34 [2025-04-13 18:45:38,564 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:38,572 INFO L225 Difference]: With dead ends: 3041 [2025-04-13 18:45:38,572 INFO L226 Difference]: Without dead ends: 2037 [2025-04-13 18:45:38,574 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1054 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=717, Invalid=2475, Unknown=0, NotChecked=0, Total=3192 [2025-04-13 18:45:38,574 INFO L437 NwaCegarLoop]: 6 mSDtfsCounter, 780 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:38,574 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 59 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:45:38,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2037 states. [2025-04-13 18:45:38,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2037 to 891. [2025-04-13 18:45:38,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 890 states have (on average 2.606741573033708) internal successors, (2320), 890 states have internal predecessors, (2320), 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) [2025-04-13 18:45:38,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 2320 transitions. [2025-04-13 18:45:38,693 INFO L79 Accepts]: Start accepts. Automaton has 891 states and 2320 transitions. Word has length 34 [2025-04-13 18:45:38,693 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:38,693 INFO L485 AbstractCegarLoop]: Abstraction has 891 states and 2320 transitions. [2025-04-13 18:45:38,693 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 22 states have internal predecessors, (59), 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) [2025-04-13 18:45:38,693 INFO L278 IsEmpty]: Start isEmpty. Operand 891 states and 2320 transitions. [2025-04-13 18:45:38,694 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-04-13 18:45:38,694 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:38,694 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:38,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-04-13 18:45:38,895 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:38,895 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:38,895 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:38,895 INFO L85 PathProgramCache]: Analyzing trace with hash 266901163, now seen corresponding path program 15 times [2025-04-13 18:45:38,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:38,895 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878733243] [2025-04-13 18:45:38,895 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:45:38,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:38,901 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 6 equivalence classes. [2025-04-13 18:45:38,923 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 31 of 37 statements. [2025-04-13 18:45:38,923 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 18:45:38,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:39,185 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 8 proven. 51 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-04-13 18:45:39,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:39,185 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878733243] [2025-04-13 18:45:39,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878733243] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:39,185 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428652159] [2025-04-13 18:45:39,186 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:45:39,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:39,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:39,188 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:45:39,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-04-13 18:45:39,246 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 6 equivalence classes. [2025-04-13 18:45:39,352 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 31 of 37 statements. [2025-04-13 18:45:39,353 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 18:45:39,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:39,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-04-13 18:45:39,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:39,562 INFO L325 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2025-04-13 18:45:39,562 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 13 [2025-04-13 18:45:39,568 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 45 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-04-13 18:45:39,568 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:39,742 INFO L325 Elim1Store]: treesize reduction 10, result has 47.4 percent of original size [2025-04-13 18:45:39,742 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 20 [2025-04-13 18:45:39,841 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 3 proven. 56 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-04-13 18:45:39,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428652159] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:39,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:39,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2025-04-13 18:45:39,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433643988] [2025-04-13 18:45:39,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:39,841 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-04-13 18:45:39,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:39,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-04-13 18:45:39,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=737, Unknown=0, NotChecked=0, Total=930 [2025-04-13 18:45:39,842 INFO L87 Difference]: Start difference. First operand 891 states and 2320 transitions. Second operand has 31 states, 30 states have (on average 2.066666666666667) internal successors, (62), 30 states have internal predecessors, (62), 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) [2025-04-13 18:45:40,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:40,460 INFO L93 Difference]: Finished difference Result 1339 states and 3338 transitions. [2025-04-13 18:45:40,460 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-13 18:45:40,460 INFO L79 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.066666666666667) internal successors, (62), 30 states have internal predecessors, (62), 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) Word has length 37 [2025-04-13 18:45:40,460 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:40,463 INFO L225 Difference]: With dead ends: 1339 [2025-04-13 18:45:40,463 INFO L226 Difference]: Without dead ends: 434 [2025-04-13 18:45:40,464 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=351, Invalid=1289, Unknown=0, NotChecked=0, Total=1640 [2025-04-13 18:45:40,464 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 109 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:40,465 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 53 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:45:40,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2025-04-13 18:45:40,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 380. [2025-04-13 18:45:40,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 2.5118733509234827) internal successors, (952), 379 states have internal predecessors, (952), 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) [2025-04-13 18:45:40,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 952 transitions. [2025-04-13 18:45:40,503 INFO L79 Accepts]: Start accepts. Automaton has 380 states and 952 transitions. Word has length 37 [2025-04-13 18:45:40,503 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:40,503 INFO L485 AbstractCegarLoop]: Abstraction has 380 states and 952 transitions. [2025-04-13 18:45:40,503 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.066666666666667) internal successors, (62), 30 states have internal predecessors, (62), 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) [2025-04-13 18:45:40,503 INFO L278 IsEmpty]: Start isEmpty. Operand 380 states and 952 transitions. [2025-04-13 18:45:40,504 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-04-13 18:45:40,504 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:40,504 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:40,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-04-13 18:45:40,704 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-04-13 18:45:40,705 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:40,705 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:40,705 INFO L85 PathProgramCache]: Analyzing trace with hash 2089337584, now seen corresponding path program 16 times [2025-04-13 18:45:40,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:40,705 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015243316] [2025-04-13 18:45:40,705 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:45:40,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:40,711 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 38 statements into 2 equivalence classes. [2025-04-13 18:45:40,724 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-04-13 18:45:40,724 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:45:40,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:40,916 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-04-13 18:45:40,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:40,916 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015243316] [2025-04-13 18:45:40,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015243316] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:40,916 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635909503] [2025-04-13 18:45:40,916 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:45:40,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:40,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:40,919 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:45:40,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-04-13 18:45:40,977 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 38 statements into 2 equivalence classes. [2025-04-13 18:45:41,003 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-04-13 18:45:41,003 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:45:41,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:41,004 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-04-13 18:45:41,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:41,099 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-04-13 18:45:41,424 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:45:41,425 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2025-04-13 18:45:41,430 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 12 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:41,431 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:41,795 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2025-04-13 18:45:41,804 INFO L325 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-04-13 18:45:41,804 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 43 [2025-04-13 18:45:42,015 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 17 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:42,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635909503] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:42,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:42,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17, 17] total 38 [2025-04-13 18:45:42,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126072651] [2025-04-13 18:45:42,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:42,016 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-04-13 18:45:42,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:42,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-04-13 18:45:42,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1352, Unknown=0, NotChecked=0, Total=1560 [2025-04-13 18:45:42,017 INFO L87 Difference]: Start difference. First operand 380 states and 952 transitions. Second operand has 40 states, 39 states have (on average 2.282051282051282) internal successors, (89), 39 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:45:44,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:44,597 INFO L93 Difference]: Finished difference Result 1541 states and 3740 transitions. [2025-04-13 18:45:44,597 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2025-04-13 18:45:44,597 INFO L79 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.282051282051282) internal successors, (89), 39 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-04-13 18:45:44,597 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:44,602 INFO L225 Difference]: With dead ends: 1541 [2025-04-13 18:45:44,602 INFO L226 Difference]: Without dead ends: 1266 [2025-04-13 18:45:44,604 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2039 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1037, Invalid=6273, Unknown=0, NotChecked=0, Total=7310 [2025-04-13 18:45:44,604 INFO L437 NwaCegarLoop]: 7 mSDtfsCounter, 917 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2537 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 2686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 2537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:44,604 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 136 Invalid, 2686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 2537 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-04-13 18:45:44,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2025-04-13 18:45:44,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 331. [2025-04-13 18:45:44,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 2.3666666666666667) internal successors, (781), 330 states have internal predecessors, (781), 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) [2025-04-13 18:45:44,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 781 transitions. [2025-04-13 18:45:44,665 INFO L79 Accepts]: Start accepts. Automaton has 331 states and 781 transitions. Word has length 38 [2025-04-13 18:45:44,665 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:44,665 INFO L485 AbstractCegarLoop]: Abstraction has 331 states and 781 transitions. [2025-04-13 18:45:44,665 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.282051282051282) internal successors, (89), 39 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:45:44,665 INFO L278 IsEmpty]: Start isEmpty. Operand 331 states and 781 transitions. [2025-04-13 18:45:44,666 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-04-13 18:45:44,666 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:44,666 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:44,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-04-13 18:45:44,866 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:44,866 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:44,866 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:44,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1923100434, now seen corresponding path program 17 times [2025-04-13 18:45:44,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:44,867 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949052510] [2025-04-13 18:45:44,867 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:45:44,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:44,873 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 40 statements into 6 equivalence classes. [2025-04-13 18:45:44,880 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 40 of 40 statements. [2025-04-13 18:45:44,880 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-04-13 18:45:44,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:45,019 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 45 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-04-13 18:45:45,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:45,020 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949052510] [2025-04-13 18:45:45,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949052510] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:45,020 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745364522] [2025-04-13 18:45:45,020 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:45:45,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:45,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:45,021 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:45:45,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-04-13 18:45:45,083 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 40 statements into 6 equivalence classes. [2025-04-13 18:45:45,121 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 40 of 40 statements. [2025-04-13 18:45:45,121 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-04-13 18:45:45,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:45,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-13 18:45:45,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:45,188 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 40 proven. 35 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-04-13 18:45:45,188 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:45,386 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 21 proven. 59 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-04-13 18:45:45,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745364522] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:45,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:45,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 12] total 30 [2025-04-13 18:45:45,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627227465] [2025-04-13 18:45:45,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:45,387 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-04-13 18:45:45,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:45,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-04-13 18:45:45,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=755, Unknown=0, NotChecked=0, Total=930 [2025-04-13 18:45:45,388 INFO L87 Difference]: Start difference. First operand 331 states and 781 transitions. Second operand has 31 states, 31 states have (on average 2.935483870967742) internal successors, (91), 30 states have internal predecessors, (91), 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) [2025-04-13 18:45:46,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:46,328 INFO L93 Difference]: Finished difference Result 1814 states and 4406 transitions. [2025-04-13 18:45:46,331 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-04-13 18:45:46,332 INFO L79 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.935483870967742) internal successors, (91), 30 states have internal predecessors, (91), 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) Word has length 40 [2025-04-13 18:45:46,332 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:46,334 INFO L225 Difference]: With dead ends: 1814 [2025-04-13 18:45:46,334 INFO L226 Difference]: Without dead ends: 572 [2025-04-13 18:45:46,336 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=925, Invalid=2981, Unknown=0, NotChecked=0, Total=3906 [2025-04-13 18:45:46,336 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 342 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:46,337 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 26 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:45:46,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2025-04-13 18:45:46,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 518. [2025-04-13 18:45:46,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 517 states have (on average 2.4506769825918764) internal successors, (1267), 517 states have internal predecessors, (1267), 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) [2025-04-13 18:45:46,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 1267 transitions. [2025-04-13 18:45:46,415 INFO L79 Accepts]: Start accepts. Automaton has 518 states and 1267 transitions. Word has length 40 [2025-04-13 18:45:46,415 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:46,416 INFO L485 AbstractCegarLoop]: Abstraction has 518 states and 1267 transitions. [2025-04-13 18:45:46,416 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.935483870967742) internal successors, (91), 30 states have internal predecessors, (91), 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) [2025-04-13 18:45:46,416 INFO L278 IsEmpty]: Start isEmpty. Operand 518 states and 1267 transitions. [2025-04-13 18:45:46,416 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-04-13 18:45:46,416 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:46,416 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:46,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-04-13 18:45:46,617 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:46,617 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:46,617 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:46,617 INFO L85 PathProgramCache]: Analyzing trace with hash -974544021, now seen corresponding path program 18 times [2025-04-13 18:45:46,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:46,618 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203022385] [2025-04-13 18:45:46,618 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:45:46,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:46,624 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 43 statements into 8 equivalence classes. [2025-04-13 18:45:46,647 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 39 of 43 statements. [2025-04-13 18:45:46,647 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-04-13 18:45:46,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:46,917 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 17 proven. 79 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-04-13 18:45:46,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:46,917 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203022385] [2025-04-13 18:45:46,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203022385] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:46,917 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840958793] [2025-04-13 18:45:46,917 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:45:46,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:46,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:46,919 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:45:46,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-04-13 18:45:46,973 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 43 statements into 8 equivalence classes. [2025-04-13 18:45:47,163 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 39 of 43 statements. [2025-04-13 18:45:47,163 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-04-13 18:45:47,163 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:47,164 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-04-13 18:45:47,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:47,426 INFO L325 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2025-04-13 18:45:47,426 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 13 [2025-04-13 18:45:47,430 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 64 proven. 32 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-04-13 18:45:47,430 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:47,643 INFO L325 Elim1Store]: treesize reduction 10, result has 52.4 percent of original size [2025-04-13 18:45:47,643 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 22 [2025-04-13 18:45:47,798 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 1 proven. 95 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-04-13 18:45:47,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840958793] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:47,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:47,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 41 [2025-04-13 18:45:47,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658098851] [2025-04-13 18:45:47,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:47,798 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-04-13 18:45:47,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:47,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-04-13 18:45:47,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=1441, Unknown=0, NotChecked=0, Total=1806 [2025-04-13 18:45:47,799 INFO L87 Difference]: Start difference. First operand 518 states and 1267 transitions. Second operand has 43 states, 42 states have (on average 1.9047619047619047) internal successors, (80), 42 states have internal predecessors, (80), 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) [2025-04-13 18:45:49,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:49,141 INFO L93 Difference]: Finished difference Result 2611 states and 6414 transitions. [2025-04-13 18:45:49,141 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-13 18:45:49,141 INFO L79 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.9047619047619047) internal successors, (80), 42 states have internal predecessors, (80), 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) Word has length 43 [2025-04-13 18:45:49,142 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:49,148 INFO L225 Difference]: With dead ends: 2611 [2025-04-13 18:45:49,148 INFO L226 Difference]: Without dead ends: 1769 [2025-04-13 18:45:49,149 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1135 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=754, Invalid=2786, Unknown=0, NotChecked=0, Total=3540 [2025-04-13 18:45:49,149 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 174 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:49,150 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 46 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:45:49,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2025-04-13 18:45:49,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1112. [2025-04-13 18:45:49,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 1111 states have (on average 2.5103510351035103) internal successors, (2789), 1111 states have internal predecessors, (2789), 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) [2025-04-13 18:45:49,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 2789 transitions. [2025-04-13 18:45:49,341 INFO L79 Accepts]: Start accepts. Automaton has 1112 states and 2789 transitions. Word has length 43 [2025-04-13 18:45:49,342 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:49,342 INFO L485 AbstractCegarLoop]: Abstraction has 1112 states and 2789 transitions. [2025-04-13 18:45:49,342 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 1.9047619047619047) internal successors, (80), 42 states have internal predecessors, (80), 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) [2025-04-13 18:45:49,342 INFO L278 IsEmpty]: Start isEmpty. Operand 1112 states and 2789 transitions. [2025-04-13 18:45:49,343 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-04-13 18:45:49,343 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:49,343 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:49,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-04-13 18:45:49,544 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:49,544 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:49,544 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:49,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1772836747, now seen corresponding path program 19 times [2025-04-13 18:45:49,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:49,544 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463848625] [2025-04-13 18:45:49,544 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:45:49,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:49,551 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-04-13 18:45:49,561 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 18:45:49,561 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:45:49,561 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:50,118 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 28 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:50,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:50,118 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463848625] [2025-04-13 18:45:50,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463848625] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:50,118 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763027756] [2025-04-13 18:45:50,118 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:45:50,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:50,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:50,120 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:45:50,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-04-13 18:45:50,180 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-04-13 18:45:50,201 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 18:45:50,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:45:50,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:50,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-04-13 18:45:50,203 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:50,665 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 4 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:50,665 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:50,762 INFO L325 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-04-13 18:45:50,762 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2025-04-13 18:45:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 1 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:51,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763027756] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:51,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:51,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 58 [2025-04-13 18:45:51,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748042773] [2025-04-13 18:45:51,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:51,390 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2025-04-13 18:45:51,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:51,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2025-04-13 18:45:51,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=499, Invalid=3041, Unknown=0, NotChecked=0, Total=3540 [2025-04-13 18:45:51,392 INFO L87 Difference]: Start difference. First operand 1112 states and 2789 transitions. Second operand has 60 states, 59 states have (on average 1.9830508474576272) internal successors, (117), 59 states have internal predecessors, (117), 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) [2025-04-13 18:46:00,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:46:00,619 INFO L93 Difference]: Finished difference Result 5252 states and 12385 transitions. [2025-04-13 18:46:00,620 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2025-04-13 18:46:00,620 INFO L79 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 1.9830508474576272) internal successors, (117), 59 states have internal predecessors, (117), 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) Word has length 43 [2025-04-13 18:46:00,620 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:46:00,635 INFO L225 Difference]: With dead ends: 5252 [2025-04-13 18:46:00,635 INFO L226 Difference]: Without dead ends: 4253 [2025-04-13 18:46:00,642 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17909 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=5781, Invalid=50151, Unknown=0, NotChecked=0, Total=55932 [2025-04-13 18:46:00,643 INFO L437 NwaCegarLoop]: 7 mSDtfsCounter, 1911 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 6383 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1911 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 6651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 6383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:46:00,643 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1911 Valid, 207 Invalid, 6651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 6383 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-04-13 18:46:00,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4253 states. [2025-04-13 18:46:00,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4253 to 1401. [2025-04-13 18:46:00,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1400 states have (on average 2.652142857142857) internal successors, (3713), 1400 states have internal predecessors, (3713), 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) [2025-04-13 18:46:00,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 3713 transitions. [2025-04-13 18:46:00,910 INFO L79 Accepts]: Start accepts. Automaton has 1401 states and 3713 transitions. Word has length 43 [2025-04-13 18:46:00,910 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:46:00,910 INFO L485 AbstractCegarLoop]: Abstraction has 1401 states and 3713 transitions. [2025-04-13 18:46:00,910 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 1.9830508474576272) internal successors, (117), 59 states have internal predecessors, (117), 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) [2025-04-13 18:46:00,911 INFO L278 IsEmpty]: Start isEmpty. Operand 1401 states and 3713 transitions. [2025-04-13 18:46:00,912 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-04-13 18:46:00,912 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:46:00,912 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:46:00,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-04-13 18:46:01,112 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:46:01,113 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:46:01,113 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:46:01,113 INFO L85 PathProgramCache]: Analyzing trace with hash 812025451, now seen corresponding path program 20 times [2025-04-13 18:46:01,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:46:01,113 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011116534] [2025-04-13 18:46:01,113 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:46:01,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:46:01,121 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-04-13 18:46:01,129 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 18:46:01,130 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:46:01,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:46:01,475 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 13 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:46:01,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:46:01,476 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011116534] [2025-04-13 18:46:01,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011116534] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:46:01,476 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850501680] [2025-04-13 18:46:01,476 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:46:01,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:46:01,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:46:01,478 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:46:01,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-04-13 18:46:01,537 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-04-13 18:46:01,557 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 18:46:01,558 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:46:01,558 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:46:01,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-04-13 18:46:01,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:46:01,672 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-04-13 18:46:02,016 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:46:02,016 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2025-04-13 18:46:02,022 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 11 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:46:02,022 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:46:02,738 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2025-04-13 18:46:02,749 INFO L325 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-04-13 18:46:02,749 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 43 [2025-04-13 18:46:03,029 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 36 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:46:03,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850501680] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:46:03,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:46:03,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 58 [2025-04-13 18:46:03,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668206313] [2025-04-13 18:46:03,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:46:03,030 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2025-04-13 18:46:03,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:46:03,030 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2025-04-13 18:46:03,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=535, Invalid=3005, Unknown=0, NotChecked=0, Total=3540 [2025-04-13 18:46:03,031 INFO L87 Difference]: Start difference. First operand 1401 states and 3713 transitions. Second operand has 60 states, 59 states have (on average 1.9830508474576272) internal successors, (117), 59 states have internal predecessors, (117), 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) [2025-04-13 18:46:08,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:46:08,701 INFO L93 Difference]: Finished difference Result 2505 states and 6075 transitions. [2025-04-13 18:46:08,701 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2025-04-13 18:46:08,702 INFO L79 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 1.9830508474576272) internal successors, (117), 59 states have internal predecessors, (117), 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) Word has length 43 [2025-04-13 18:46:08,702 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:46:08,708 INFO L225 Difference]: With dead ends: 2505 [2025-04-13 18:46:08,708 INFO L226 Difference]: Without dead ends: 1305 [2025-04-13 18:46:08,710 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6998 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3242, Invalid=20320, Unknown=0, NotChecked=0, Total=23562 [2025-04-13 18:46:08,710 INFO L437 NwaCegarLoop]: 8 mSDtfsCounter, 1087 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 4314 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 4536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 4314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-04-13 18:46:08,710 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 199 Invalid, 4536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 4314 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-04-13 18:46:08,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2025-04-13 18:46:08,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1177. [2025-04-13 18:46:08,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1176 states have (on average 2.682823129251701) internal successors, (3155), 1176 states have internal predecessors, (3155), 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) [2025-04-13 18:46:08,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 3155 transitions. [2025-04-13 18:46:08,886 INFO L79 Accepts]: Start accepts. Automaton has 1177 states and 3155 transitions. Word has length 43 [2025-04-13 18:46:08,886 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:46:08,886 INFO L485 AbstractCegarLoop]: Abstraction has 1177 states and 3155 transitions. [2025-04-13 18:46:08,886 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 1.9830508474576272) internal successors, (117), 59 states have internal predecessors, (117), 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) [2025-04-13 18:46:08,886 INFO L278 IsEmpty]: Start isEmpty. Operand 1177 states and 3155 transitions. [2025-04-13 18:46:08,887 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-04-13 18:46:08,887 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:46:08,887 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:46:08,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-04-13 18:46:09,088 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-04-13 18:46:09,088 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:46:09,088 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:46:09,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1258374517, now seen corresponding path program 21 times [2025-04-13 18:46:09,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:46:09,088 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352141572] [2025-04-13 18:46:09,088 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:46:09,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:46:09,095 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 43 statements into 7 equivalence classes. [2025-04-13 18:46:09,124 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 41 of 43 statements. [2025-04-13 18:46:09,124 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-13 18:46:09,124 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:46:09,385 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 12 proven. 75 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-04-13 18:46:09,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:46:09,385 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352141572] [2025-04-13 18:46:09,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352141572] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:46:09,385 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796874346] [2025-04-13 18:46:09,385 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:46:09,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:46:09,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:46:09,387 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:46:09,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-04-13 18:46:09,451 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 43 statements into 7 equivalence classes. [2025-04-13 18:46:09,627 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 41 of 43 statements. [2025-04-13 18:46:09,628 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-13 18:46:09,628 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:46:09,629 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-04-13 18:46:09,630 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:46:10,000 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 55 proven. 42 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-04-13 18:46:10,000 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:46:10,210 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:46:10,211 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2025-04-13 18:46:10,492 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 26 proven. 71 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-04-13 18:46:10,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796874346] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:46:10,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:46:10,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 16] total 45 [2025-04-13 18:46:10,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537940043] [2025-04-13 18:46:10,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:46:10,493 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-04-13 18:46:10,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:46:10,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-04-13 18:46:10,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=488, Invalid=1674, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 18:46:10,494 INFO L87 Difference]: Start difference. First operand 1177 states and 3155 transitions. Second operand has 47 states, 46 states have (on average 2.0434782608695654) internal successors, (94), 46 states have internal predecessors, (94), 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) [2025-04-13 18:46:13,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:46:13,310 INFO L93 Difference]: Finished difference Result 4402 states and 11253 transitions. [2025-04-13 18:46:13,310 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2025-04-13 18:46:13,311 INFO L79 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.0434782608695654) internal successors, (94), 46 states have internal predecessors, (94), 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) Word has length 43 [2025-04-13 18:46:13,311 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:46:13,317 INFO L225 Difference]: With dead ends: 4402 [2025-04-13 18:46:13,317 INFO L226 Difference]: Without dead ends: 1075 [2025-04-13 18:46:13,320 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2650 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1923, Invalid=6087, Unknown=0, NotChecked=0, Total=8010 [2025-04-13 18:46:13,321 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 430 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:46:13,321 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 56 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 18:46:13,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2025-04-13 18:46:13,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 1012. [2025-04-13 18:46:13,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 1011 states have (on average 2.731948565776459) internal successors, (2762), 1011 states have internal predecessors, (2762), 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) [2025-04-13 18:46:13,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 2762 transitions. [2025-04-13 18:46:13,468 INFO L79 Accepts]: Start accepts. Automaton has 1012 states and 2762 transitions. Word has length 43 [2025-04-13 18:46:13,468 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:46:13,468 INFO L485 AbstractCegarLoop]: Abstraction has 1012 states and 2762 transitions. [2025-04-13 18:46:13,468 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.0434782608695654) internal successors, (94), 46 states have internal predecessors, (94), 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) [2025-04-13 18:46:13,468 INFO L278 IsEmpty]: Start isEmpty. Operand 1012 states and 2762 transitions. [2025-04-13 18:46:13,469 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-04-13 18:46:13,469 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:46:13,469 INFO L218 NwaCegarLoop]: trace histogram [11, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:46:13,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-04-13 18:46:13,669 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-04-13 18:46:13,670 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:46:13,670 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:46:13,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1804728112, now seen corresponding path program 22 times [2025-04-13 18:46:13,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:46:13,670 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549086783] [2025-04-13 18:46:13,670 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:46:13,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:46:13,678 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 48 statements into 2 equivalence classes. [2025-04-13 18:46:13,682 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 48 of 48 statements. [2025-04-13 18:46:13,682 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:46:13,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:46:13,817 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 41 proven. 51 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-04-13 18:46:13,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:46:13,817 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549086783] [2025-04-13 18:46:13,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549086783] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:46:13,817 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033718956] [2025-04-13 18:46:13,817 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:46:13,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:46:13,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:46:13,819 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:46:13,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-04-13 18:46:13,890 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 48 statements into 2 equivalence classes. [2025-04-13 18:46:13,913 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 48 of 48 statements. [2025-04-13 18:46:13,913 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:46:13,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:46:13,914 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-04-13 18:46:13,915 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:46:13,974 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2025-04-13 18:46:13,974 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:46:13,983 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:46:13,984 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2025-04-13 18:46:14,011 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2025-04-13 18:46:14,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033718956] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:46:14,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:46:14,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 14 [2025-04-13 18:46:14,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844885233] [2025-04-13 18:46:14,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:46:14,012 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 18:46:14,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:46:14,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 18:46:14,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:46:14,013 INFO L87 Difference]: Start difference. First operand 1012 states and 2762 transitions. Second operand has 16 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 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) [2025-04-13 18:46:14,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:46:14,661 INFO L93 Difference]: Finished difference Result 1789 states and 4550 transitions. [2025-04-13 18:46:14,661 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-04-13 18:46:14,661 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 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) Word has length 48 [2025-04-13 18:46:14,661 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:46:14,669 INFO L225 Difference]: With dead ends: 1789 [2025-04-13 18:46:14,669 INFO L226 Difference]: Without dead ends: 1669 [2025-04-13 18:46:14,670 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=204, Invalid=852, Unknown=0, NotChecked=0, Total=1056 [2025-04-13 18:46:14,670 INFO L437 NwaCegarLoop]: 7 mSDtfsCounter, 352 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:46:14,670 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 42 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:46:14,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2025-04-13 18:46:14,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1012. [2025-04-13 18:46:14,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 1011 states have (on average 2.731948565776459) internal successors, (2762), 1011 states have internal predecessors, (2762), 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) [2025-04-13 18:46:14,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 2762 transitions. [2025-04-13 18:46:14,822 INFO L79 Accepts]: Start accepts. Automaton has 1012 states and 2762 transitions. Word has length 48 [2025-04-13 18:46:14,822 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:46:14,822 INFO L485 AbstractCegarLoop]: Abstraction has 1012 states and 2762 transitions. [2025-04-13 18:46:14,822 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 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) [2025-04-13 18:46:14,823 INFO L278 IsEmpty]: Start isEmpty. Operand 1012 states and 2762 transitions. [2025-04-13 18:46:14,823 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-04-13 18:46:14,823 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:46:14,823 INFO L218 NwaCegarLoop]: trace histogram [11, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:46:14,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-04-13 18:46:15,024 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:46:15,024 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:46:15,024 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:46:15,024 INFO L85 PathProgramCache]: Analyzing trace with hash 2025200624, now seen corresponding path program 23 times [2025-04-13 18:46:15,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:46:15,024 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451769507] [2025-04-13 18:46:15,025 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:46:15,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:46:15,032 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 48 statements into 7 equivalence classes. [2025-04-13 18:46:15,061 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 48 of 48 statements. [2025-04-13 18:46:15,061 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-04-13 18:46:15,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:46:15,200 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2025-04-13 18:46:15,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:46:15,200 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451769507] [2025-04-13 18:46:15,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451769507] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:46:15,200 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497560089] [2025-04-13 18:46:15,200 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:46:15,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:46:15,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:46:15,202 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:46:15,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-04-13 18:46:15,282 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 48 statements into 7 equivalence classes. [2025-04-13 18:46:15,352 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 48 of 48 statements. [2025-04-13 18:46:15,352 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-04-13 18:46:15,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:46:15,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-04-13 18:46:15,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:46:15,511 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:46:15,511 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:46:15,526 INFO L325 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-04-13 18:46:15,526 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2025-04-13 18:46:15,561 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2025-04-13 18:46:15,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497560089] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:46:15,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:46:15,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 19, 9] total 19 [2025-04-13 18:46:15,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716141254] [2025-04-13 18:46:15,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:46:15,562 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:46:15,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:46:15,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:46:15,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:46:15,563 INFO L87 Difference]: Start difference. First operand 1012 states and 2762 transitions. Second operand has 21 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 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) [2025-04-13 18:46:17,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:46:17,057 INFO L93 Difference]: Finished difference Result 3025 states and 7635 transitions. [2025-04-13 18:46:17,057 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-04-13 18:46:17,058 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 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) Word has length 48 [2025-04-13 18:46:17,058 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:46:17,066 INFO L225 Difference]: With dead ends: 3025 [2025-04-13 18:46:17,066 INFO L226 Difference]: Without dead ends: 2783 [2025-04-13 18:46:17,067 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1385 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=357, Invalid=4065, Unknown=0, NotChecked=0, Total=4422 [2025-04-13 18:46:17,068 INFO L437 NwaCegarLoop]: 7 mSDtfsCounter, 583 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 1667 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:46:17,068 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 97 Invalid, 1674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1667 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 18:46:17,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2025-04-13 18:46:17,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 1084. [2025-04-13 18:46:17,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 1083 states have (on average 2.7682363804247463) internal successors, (2998), 1083 states have internal predecessors, (2998), 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) [2025-04-13 18:46:17,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 2998 transitions. [2025-04-13 18:46:17,236 INFO L79 Accepts]: Start accepts. Automaton has 1084 states and 2998 transitions. Word has length 48 [2025-04-13 18:46:17,236 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:46:17,236 INFO L485 AbstractCegarLoop]: Abstraction has 1084 states and 2998 transitions. [2025-04-13 18:46:17,236 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 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) [2025-04-13 18:46:17,236 INFO L278 IsEmpty]: Start isEmpty. Operand 1084 states and 2998 transitions. [2025-04-13 18:46:17,237 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-04-13 18:46:17,237 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:46:17,237 INFO L218 NwaCegarLoop]: trace histogram [11, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:46:17,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-04-13 18:46:17,441 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:46:17,441 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:46:17,441 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:46:17,441 INFO L85 PathProgramCache]: Analyzing trace with hash -18158640, now seen corresponding path program 24 times [2025-04-13 18:46:17,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:46:17,441 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345205298] [2025-04-13 18:46:17,441 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:46:17,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:46:17,449 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 48 statements into 7 equivalence classes. [2025-04-13 18:46:17,464 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 48 of 48 statements. [2025-04-13 18:46:17,464 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-04-13 18:46:17,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:46:17,648 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 28 proven. 65 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2025-04-13 18:46:17,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:46:17,648 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345205298] [2025-04-13 18:46:17,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345205298] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:46:17,648 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112641903] [2025-04-13 18:46:17,648 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:46:17,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:46:17,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:46:17,650 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:46:17,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-04-13 18:46:17,731 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 48 statements into 7 equivalence classes. [2025-04-13 18:46:19,371 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 48 of 48 statements. [2025-04-13 18:46:19,372 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-04-13 18:46:19,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:46:19,373 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-04-13 18:46:19,374 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:46:19,474 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 42 proven. 51 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2025-04-13 18:46:19,474 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:46:19,580 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:46:19,580 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2025-04-13 18:46:19,727 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 8 proven. 88 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-04-13 18:46:19,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112641903] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:46:19,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:46:19,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 13] total 27 [2025-04-13 18:46:19,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912726501] [2025-04-13 18:46:19,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:46:19,728 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-04-13 18:46:19,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:46:19,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-04-13 18:46:19,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=557, Unknown=0, NotChecked=0, Total=812 [2025-04-13 18:46:19,729 INFO L87 Difference]: Start difference. First operand 1084 states and 2998 transitions. Second operand has 29 states, 28 states have (on average 2.75) internal successors, (77), 28 states have internal predecessors, (77), 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) [2025-04-13 18:46:20,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:46:20,247 INFO L93 Difference]: Finished difference Result 1185 states and 3173 transitions. [2025-04-13 18:46:20,247 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-13 18:46:20,247 INFO L79 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.75) internal successors, (77), 28 states have internal predecessors, (77), 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) Word has length 48 [2025-04-13 18:46:20,247 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:46:20,250 INFO L225 Difference]: With dead ends: 1185 [2025-04-13 18:46:20,250 INFO L226 Difference]: Without dead ends: 0 [2025-04-13 18:46:20,252 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=437, Invalid=895, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 18:46:20,252 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 319 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:46:20,252 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 16 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:46:20,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-04-13 18:46:20,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-04-13 18:46:20,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2025-04-13 18:46:20,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-04-13 18:46:20,255 INFO L79 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2025-04-13 18:46:20,255 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:46:20,255 INFO L485 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-13 18:46:20,255 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.75) internal successors, (77), 28 states have internal predecessors, (77), 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) [2025-04-13 18:46:20,255 INFO L278 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-04-13 18:46:20,255 INFO L284 IsEmpty]: Finished isEmpty. No accepting run. [2025-04-13 18:46:20,257 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-13 18:46:20,257 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-13 18:46:20,257 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-13 18:46:20,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-04-13 18:46:20,457 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-04-13 18:46:20,460 INFO L422 BasicCegarLoop]: Path program histogram: [24, 1, 1, 1] [2025-04-13 18:46:20,461 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 18:46:20,461 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 18:46:20,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 06:46:20 BasicIcfg [2025-04-13 18:46:20,463 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 18:46:20,464 INFO L158 Benchmark]: Toolchain (without parser) took 63034.13ms. Allocated memory was 142.6MB in the beginning and 780.1MB in the end (delta: 637.5MB). Free memory was 98.8MB in the beginning and 524.9MB in the end (delta: -426.2MB). Peak memory consumption was 208.9MB. Max. memory is 8.0GB. [2025-04-13 18:46:20,464 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 159.4MB. Free memory is still 86.6MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 18:46:20,464 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.56ms. Allocated memory is still 142.6MB. Free memory was 98.8MB in the beginning and 83.5MB in the end (delta: 15.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-13 18:46:20,464 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.32ms. Allocated memory is still 142.6MB. Free memory was 83.5MB in the beginning and 82.1MB in the end (delta: 1.4MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 18:46:20,464 INFO L158 Benchmark]: Boogie Preprocessor took 33.66ms. Allocated memory is still 142.6MB. Free memory was 82.1MB in the beginning and 80.0MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 18:46:20,464 INFO L158 Benchmark]: RCFGBuilder took 472.34ms. Allocated memory is still 142.6MB. Free memory was 80.0MB in the beginning and 38.1MB in the end (delta: 41.9MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. [2025-04-13 18:46:20,464 INFO L158 Benchmark]: TraceAbstraction took 62295.26ms. Allocated memory was 142.6MB in the beginning and 780.1MB in the end (delta: 637.5MB). Free memory was 37.4MB in the beginning and 524.9MB in the end (delta: -487.5MB). Peak memory consumption was 150.2MB. Max. memory is 8.0GB. [2025-04-13 18:46:20,465 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 159.4MB. Free memory is still 86.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 195.56ms. Allocated memory is still 142.6MB. Free memory was 98.8MB in the beginning and 83.5MB in the end (delta: 15.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.32ms. Allocated memory is still 142.6MB. Free memory was 83.5MB in the beginning and 82.1MB in the end (delta: 1.4MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.66ms. Allocated memory is still 142.6MB. Free memory was 82.1MB in the beginning and 80.0MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 472.34ms. Allocated memory is still 142.6MB. Free memory was 80.0MB in the beginning and 38.1MB in the end (delta: 41.9MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. * TraceAbstraction took 62295.26ms. Allocated memory was 142.6MB in the beginning and 780.1MB in the end (delta: 637.5MB). Free memory was 37.4MB in the beginning and 524.9MB in the end (delta: -487.5MB). Peak memory consumption was 150.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 86]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 29 locations, 33 edges, 3 error locations. Started 1 CEGAR loops. OverallTime: 62.2s, OverallIterations: 27, TraceHistogramMax: 11, PathProgramHistogramMax: 24, EmptinessCheckTime: 0.0s, AutomataDifference: 34.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9561 SdHoareTripleChecker+Valid, 11.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9561 mSDsluCounter, 1394 SdHoareTripleChecker+Invalid, 9.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1283 mSDsCounter, 1098 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 25664 IncrementalHoareTripleChecker+Invalid, 26762 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1098 mSolverCounterUnsat, 111 mSDtfsCounter, 25664 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2476 GetRequests, 1193 SyntacticMatches, 2 SemanticMatches, 1281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38534 ImplicationChecksByTransitivity, 22.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1401occurred in iteration=22, InterpolantAutomatonStates: 827, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 27 MinimizatonAttempts, 10041 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 16.6s InterpolantComputationTime, 1633 NumberOfCodeBlocks, 1609 NumberOfCodeBlocksAsserted, 157 NumberOfCheckSat, 2352 ConstructedInterpolants, 157 QuantifiedInterpolants, 23169 SizeOfPredicates, 198 NumberOfNonLiveVariables, 5102 ConjunctsInSsa, 617 ConjunctsInUnsatCore, 75 InterpolantComputations, 3 PerfectInterpolantSequences, 1626/4568 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-13 18:46:20,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...