/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_IcfgBuilder.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis FINITE_AUTOMATA --preprocessor.replace.while.statements.and.if-then-else.statements false -i ../../../trunk/examples/svcomp/weaver/test-context1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 23:21:56,166 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 23:21:56,206 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 23:21:56,210 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 23:21:56,211 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 23:21:56,234 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 23:21:56,234 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 23:21:56,234 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 23:21:56,235 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 23:21:56,235 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 23:21:56,235 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 23:21:56,235 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 23:21:56,235 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 23:21:56,235 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 23:21:56,235 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 23:21:56,235 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 23:21:56,235 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 23:21:56,235 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 23:21:56,235 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 23:21:56,235 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 23:21:56,236 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 23:21:56,236 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 23:21:56,236 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 23:21:56,236 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 23:21:56,236 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 23:21:56,236 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 23:21:56,236 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 23:21:56,236 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 23:21:56,236 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 23:21:56,236 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 23:21:56,236 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 23:21:56,236 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 23:21:56,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 23:21:56,236 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 23:21:56,236 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 23:21:56,236 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 23:21:56,236 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 23:21:56,237 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 23:21:56,237 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 23:21:56,237 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 23:21:56,237 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 23:21:56,237 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 23:21:56,237 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 23:21:56,237 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 23:21:56,237 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 23:21:56,237 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 23:21:56,237 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 23:21:56,237 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 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-13 23:21:56,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 23:21:56,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 23:21:56,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 23:21:56,508 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 23:21:56,508 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 23:21:56,510 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-context1.wvr.c [2025-04-13 23:21:57,833 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/546927b61/8fdbe8222a5f4b608dd8b238e871e1a8/FLAG81b73b9b9 [2025-04-13 23:21:58,038 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 23:21:58,039 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-context1.wvr.c [2025-04-13 23:21:58,049 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/546927b61/8fdbe8222a5f4b608dd8b238e871e1a8/FLAG81b73b9b9 [2025-04-13 23:21:58,884 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/546927b61/8fdbe8222a5f4b608dd8b238e871e1a8 [2025-04-13 23:21:58,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 23:21:58,888 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 23:21:58,889 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 23:21:58,889 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 23:21:58,892 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 23:21:58,894 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 11:21:58" (1/1) ... [2025-04-13 23:21:58,894 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27e84948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:21:58, skipping insertion in model container [2025-04-13 23:21:58,894 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 11:21:58" (1/1) ... [2025-04-13 23:21:58,911 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 23:21:59,093 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/test-context1.wvr.c[2459,2472] [2025-04-13 23:21:59,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 23:21:59,117 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 23:21:59,147 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/test-context1.wvr.c[2459,2472] [2025-04-13 23:21:59,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 23:21:59,159 INFO L204 MainTranslator]: Completed translation [2025-04-13 23:21:59,160 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:21:59 WrapperNode [2025-04-13 23:21:59,160 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 23:21:59,161 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 23:21:59,161 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 23:21:59,161 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 23:21:59,167 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:21:59" (1/1) ... [2025-04-13 23:21:59,178 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:21:59" (1/1) ... [2025-04-13 23:21:59,200 INFO L138 Inliner]: procedures = 23, calls = 24, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 122 [2025-04-13 23:21:59,202 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 23:21:59,202 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 23:21:59,202 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 23:21:59,202 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 23:21:59,208 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:21:59" (1/1) ... [2025-04-13 23:21:59,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:21:59" (1/1) ... [2025-04-13 23:21:59,215 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:21:59" (1/1) ... [2025-04-13 23:21:59,231 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 23:21:59,232 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:21:59" (1/1) ... [2025-04-13 23:21:59,232 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:21:59" (1/1) ... [2025-04-13 23:21:59,240 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:21:59" (1/1) ... [2025-04-13 23:21:59,241 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:21:59" (1/1) ... [2025-04-13 23:21:59,242 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:21:59" (1/1) ... [2025-04-13 23:21:59,248 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:21:59" (1/1) ... [2025-04-13 23:21:59,255 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 23:21:59,256 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-13 23:21:59,257 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-13 23:21:59,257 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-13 23:21:59,258 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:21:59" (1/1) ... [2025-04-13 23:21:59,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 23:21:59,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:21:59,284 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 23:21:59,286 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 23:21:59,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 23:21:59,301 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 23:21:59,302 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 23:21:59,302 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 23:21:59,302 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 23:21:59,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 23:21:59,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 23:21:59,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 23:21:59,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 23:21:59,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 23:21:59,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 23:21:59,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-13 23:21:59,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 23:21:59,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 23:21:59,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 23:21:59,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 23:21:59,303 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 23:21:59,371 INFO L256 CfgBuilder]: Building ICFG [2025-04-13 23:21:59,372 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 23:21:59,536 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 23:21:59,536 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 23:21:59,537 INFO L318 CfgBuilder]: Performing block encoding [2025-04-13 23:21:59,705 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 23:21:59,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 11:21:59 BoogieIcfgContainer [2025-04-13 23:21:59,706 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-13 23:21:59,707 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 23:21:59,707 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 23:21:59,712 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 23:21:59,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 11:21:58" (1/3) ... [2025-04-13 23:21:59,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e8b744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 11:21:59, skipping insertion in model container [2025-04-13 23:21:59,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:21:59" (2/3) ... [2025-04-13 23:21:59,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e8b744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 11:21:59, skipping insertion in model container [2025-04-13 23:21:59,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 11:21:59" (3/3) ... [2025-04-13 23:21:59,713 INFO L128 eAbstractionObserver]: Analyzing ICFG test-context1.wvr.c [2025-04-13 23:21:59,724 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 23:21:59,725 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-context1.wvr.c that has 3 procedures, 19 locations, 19 edges, 1 initial locations, 3 loop locations, and 1 error locations. [2025-04-13 23:21:59,725 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 23:21:59,768 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-13 23:21:59,792 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 21 transitions, 56 flow [2025-04-13 23:21:59,805 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 23:21:59,822 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 23:21:59,832 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;@61fff98a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 23:21:59,832 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 23:21:59,834 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 23:21:59,838 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-04-13 23:21:59,838 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:21:59,838 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:21:59,838 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 23:21:59,843 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:21:59,843 INFO L85 PathProgramCache]: Analyzing trace with hash 864058171, now seen corresponding path program 1 times [2025-04-13 23:21:59,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:21:59,849 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484241560] [2025-04-13 23:21:59,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:21:59,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:21:59,929 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-13 23:21:59,950 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 23:21:59,950 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:21:59,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:00,068 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 23:22:00,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:22:00,069 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484241560] [2025-04-13 23:22:00,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484241560] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 23:22:00,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 23:22:00,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-13 23:22:00,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411206700] [2025-04-13 23:22:00,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 23:22:00,075 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 23:22:00,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:22:00,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 23:22:00,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 23:22:00,092 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 23:22:00,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:22:00,155 INFO L93 Difference]: Finished difference Result 78 states and 178 transitions. [2025-04-13 23:22:00,156 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 23:22:00,157 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 23:22:00,157 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:22:00,162 INFO L225 Difference]: With dead ends: 78 [2025-04-13 23:22:00,163 INFO L226 Difference]: Without dead ends: 67 [2025-04-13 23:22:00,167 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 23:22:00,170 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 23:22:00,170 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 23:22:00,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2025-04-13 23:22:00,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 58. [2025-04-13 23:22:00,194 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 23:22:00,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 132 transitions. [2025-04-13 23:22:00,199 INFO L79 Accepts]: Start accepts. Automaton has 58 states and 132 transitions. Word has length 13 [2025-04-13 23:22:00,199 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:22:00,199 INFO L485 AbstractCegarLoop]: Abstraction has 58 states and 132 transitions. [2025-04-13 23:22:00,199 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 23:22:00,199 INFO L278 IsEmpty]: Start isEmpty. Operand 58 states and 132 transitions. [2025-04-13 23:22:00,200 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 23:22:00,200 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:22:00,200 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:22:00,200 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 23:22:00,200 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 23:22:00,201 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:22:00,201 INFO L85 PathProgramCache]: Analyzing trace with hash 933187033, now seen corresponding path program 1 times [2025-04-13 23:22:00,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:22:00,201 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722146619] [2025-04-13 23:22:00,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:22:00,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:22:00,212 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 23:22:00,232 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 23:22:00,232 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:22:00,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:00,330 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 23:22:00,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:22:00,331 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722146619] [2025-04-13 23:22:00,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722146619] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 23:22:00,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 23:22:00,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 23:22:00,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444363092] [2025-04-13 23:22:00,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 23:22:00,332 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 23:22:00,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:22:00,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 23:22:00,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 23:22:00,332 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 23:22:00,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:22:00,373 INFO L93 Difference]: Finished difference Result 110 states and 253 transitions. [2025-04-13 23:22:00,373 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 23:22:00,373 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 23:22:00,373 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:22:00,374 INFO L225 Difference]: With dead ends: 110 [2025-04-13 23:22:00,374 INFO L226 Difference]: Without dead ends: 70 [2025-04-13 23:22:00,374 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 23:22:00,375 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 23:22:00,375 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 23:22:00,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2025-04-13 23:22:00,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2025-04-13 23:22:00,380 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 23:22:00,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 154 transitions. [2025-04-13 23:22:00,381 INFO L79 Accepts]: Start accepts. Automaton has 70 states and 154 transitions. Word has length 15 [2025-04-13 23:22:00,381 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:22:00,381 INFO L485 AbstractCegarLoop]: Abstraction has 70 states and 154 transitions. [2025-04-13 23:22:00,382 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 23:22:00,382 INFO L278 IsEmpty]: Start isEmpty. Operand 70 states and 154 transitions. [2025-04-13 23:22:00,382 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 23:22:00,382 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:22:00,382 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 23:22:00,382 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 23:22:00,384 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 23:22:00,387 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:22:00,387 INFO L85 PathProgramCache]: Analyzing trace with hash 666095611, now seen corresponding path program 1 times [2025-04-13 23:22:00,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:22:00,387 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928492763] [2025-04-13 23:22:00,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:22:00,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:22:00,398 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 23:22:00,411 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 23:22:00,411 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:22:00,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:00,599 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 23:22:00,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:22:00,600 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928492763] [2025-04-13 23:22:00,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928492763] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 23:22:00,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 23:22:00,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 23:22:00,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957574303] [2025-04-13 23:22:00,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 23:22:00,600 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 23:22:00,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:22:00,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 23:22:00,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 23:22:00,601 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 23:22:00,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:22:00,662 INFO L93 Difference]: Finished difference Result 139 states and 307 transitions. [2025-04-13 23:22:00,663 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 23:22:00,663 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 23:22:00,663 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:22:00,664 INFO L225 Difference]: With dead ends: 139 [2025-04-13 23:22:00,664 INFO L226 Difference]: Without dead ends: 71 [2025-04-13 23:22:00,664 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 23:22:00,665 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 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, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:22:00,665 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 23:22:00,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-04-13 23:22:00,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2025-04-13 23:22:00,672 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 23:22:00,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 155 transitions. [2025-04-13 23:22:00,673 INFO L79 Accepts]: Start accepts. Automaton has 71 states and 155 transitions. Word has length 17 [2025-04-13 23:22:00,673 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:22:00,673 INFO L485 AbstractCegarLoop]: Abstraction has 71 states and 155 transitions. [2025-04-13 23:22:00,673 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 23:22:00,673 INFO L278 IsEmpty]: Start isEmpty. Operand 71 states and 155 transitions. [2025-04-13 23:22:00,673 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 23:22:00,673 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:22:00,673 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 23:22:00,673 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 23:22:00,674 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 23:22:00,674 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:22:00,674 INFO L85 PathProgramCache]: Analyzing trace with hash 165077462, now seen corresponding path program 1 times [2025-04-13 23:22:00,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:22:00,674 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340219445] [2025-04-13 23:22:00,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:22:00,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:22:00,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-13 23:22:00,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 23:22:00,706 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:22:00,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:00,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:22:00,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:22:00,992 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340219445] [2025-04-13 23:22:00,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340219445] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:22:00,993 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155533711] [2025-04-13 23:22:00,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:22:00,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:22:00,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:22:00,996 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 23:22:00,997 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 23:22:01,040 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-13 23:22:01,057 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 23:22:01,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:22:01,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:01,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 23:22:01,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:22:01,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:22:01,162 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:22:01,205 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:22:01,206 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 27 treesize of output 11 [2025-04-13 23:22:01,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:22:01,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155533711] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:22:01,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:22:01,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2025-04-13 23:22:01,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625952600] [2025-04-13 23:22:01,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:22:01,230 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-13 23:22:01,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:22:01,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-13 23:22:01,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-04-13 23:22:01,231 INFO L87 Difference]: Start difference. First operand 71 states and 155 transitions. Second operand has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 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 23:22:01,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:22:01,354 INFO L93 Difference]: Finished difference Result 101 states and 225 transitions. [2025-04-13 23:22:01,355 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 23:22:01,355 INFO L79 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 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 18 [2025-04-13 23:22:01,355 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:22:01,356 INFO L225 Difference]: With dead ends: 101 [2025-04-13 23:22:01,356 INFO L226 Difference]: Without dead ends: 92 [2025-04-13 23:22:01,356 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2025-04-13 23:22:01,356 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 50 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:22:01,357 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 10 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 23:22:01,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2025-04-13 23:22:01,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 85. [2025-04-13 23:22:01,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 2.25) internal successors, (189), 84 states have internal predecessors, (189), 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 23:22:01,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 189 transitions. [2025-04-13 23:22:01,368 INFO L79 Accepts]: Start accepts. Automaton has 85 states and 189 transitions. Word has length 18 [2025-04-13 23:22:01,368 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:22:01,368 INFO L485 AbstractCegarLoop]: Abstraction has 85 states and 189 transitions. [2025-04-13 23:22:01,368 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 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 23:22:01,369 INFO L278 IsEmpty]: Start isEmpty. Operand 85 states and 189 transitions. [2025-04-13 23:22:01,369 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:22:01,369 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:22:01,369 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:22:01,378 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 23:22:01,572 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 23:22:01,573 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 23:22:01,573 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:22:01,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1025428236, now seen corresponding path program 2 times [2025-04-13 23:22:01,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:22:01,573 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828269008] [2025-04-13 23:22:01,573 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:22:01,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:22:01,586 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:22:01,604 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:22:01,604 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:22:01,604 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:01,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:22:01,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:22:01,725 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828269008] [2025-04-13 23:22:01,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828269008] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:22:01,725 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214736721] [2025-04-13 23:22:01,725 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:22:01,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:22:01,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:22:01,728 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 23:22:01,729 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 23:22:01,777 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:22:01,796 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:22:01,796 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:22:01,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:01,798 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-13 23:22:01,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:22:01,828 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 23:22:01,828 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:22:01,863 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 23:22:01,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214736721] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:22:01,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:22:01,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 7 [2025-04-13 23:22:01,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317628730] [2025-04-13 23:22:01,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:22:01,864 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-13 23:22:01,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:22:01,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-13 23:22:01,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-04-13 23:22:01,864 INFO L87 Difference]: Start difference. First operand 85 states and 189 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 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 23:22:02,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:22:02,010 INFO L93 Difference]: Finished difference Result 262 states and 596 transitions. [2025-04-13 23:22:02,010 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 23:22:02,010 INFO L79 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 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 20 [2025-04-13 23:22:02,011 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:22:02,012 INFO L225 Difference]: With dead ends: 262 [2025-04-13 23:22:02,012 INFO L226 Difference]: Without dead ends: 156 [2025-04-13 23:22:02,012 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2025-04-13 23:22:02,013 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 36 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:22:02,013 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 10 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 23:22:02,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2025-04-13 23:22:02,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 138. [2025-04-13 23:22:02,028 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 23:22:02,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 323 transitions. [2025-04-13 23:22:02,031 INFO L79 Accepts]: Start accepts. Automaton has 138 states and 323 transitions. Word has length 20 [2025-04-13 23:22:02,031 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:22:02,031 INFO L485 AbstractCegarLoop]: Abstraction has 138 states and 323 transitions. [2025-04-13 23:22:02,031 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 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 23:22:02,031 INFO L278 IsEmpty]: Start isEmpty. Operand 138 states and 323 transitions. [2025-04-13 23:22:02,032 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-04-13 23:22:02,032 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:22:02,032 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 23:22:02,039 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 23:22:02,232 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 23:22:02,233 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 23:22:02,233 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:22:02,233 INFO L85 PathProgramCache]: Analyzing trace with hash -43740197, now seen corresponding path program 3 times [2025-04-13 23:22:02,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:22:02,233 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48744783] [2025-04-13 23:22:02,233 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:22:02,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:22:02,241 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 4 equivalence classes. [2025-04-13 23:22:02,268 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 23 statements. [2025-04-13 23:22:02,268 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 23:22:02,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:02,742 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:22:02,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:22:02,742 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48744783] [2025-04-13 23:22:02,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48744783] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:22:02,742 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830271880] [2025-04-13 23:22:02,742 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:22:02,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:22:02,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:22:02,745 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 23:22:02,746 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 23:22:02,786 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 4 equivalence classes. [2025-04-13 23:22:02,816 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 23 statements. [2025-04-13 23:22:02,816 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 23:22:02,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:02,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 59 conjuncts are in the unsatisfiable core [2025-04-13 23:22:02,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:22:03,173 INFO L325 Elim1Store]: treesize reduction 24, result has 11.1 percent of original size [2025-04-13 23:22:03,173 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 30 treesize of output 13 [2025-04-13 23:22:03,188 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:22:03,188 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:22:03,365 INFO L325 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2025-04-13 23:22:03,366 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 42 treesize of output 20 [2025-04-13 23:22:03,639 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:22:03,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830271880] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:22:03,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:22:03,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 19 [2025-04-13 23:22:03,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660827628] [2025-04-13 23:22:03,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:22:03,640 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 23:22:03,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:22:03,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 23:22:03,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2025-04-13 23:22:03,641 INFO L87 Difference]: Start difference. First operand 138 states and 323 transitions. Second operand has 21 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 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 23:22:03,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:22:03,992 INFO L93 Difference]: Finished difference Result 274 states and 645 transitions. [2025-04-13 23:22:03,993 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-13 23:22:03,993 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 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 23:22:03,993 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:22:03,994 INFO L225 Difference]: With dead ends: 274 [2025-04-13 23:22:03,994 INFO L226 Difference]: Without dead ends: 140 [2025-04-13 23:22:03,995 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=145, Invalid=611, Unknown=0, NotChecked=0, Total=756 [2025-04-13 23:22:03,995 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 42 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 23:22:03,995 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 32 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 23:22:03,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2025-04-13 23:22:04,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2025-04-13 23:22:04,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 2.347826086956522) internal successors, (324), 138 states have internal predecessors, (324), 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 23:22:04,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 324 transitions. [2025-04-13 23:22:04,012 INFO L79 Accepts]: Start accepts. Automaton has 139 states and 324 transitions. Word has length 23 [2025-04-13 23:22:04,012 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:22:04,012 INFO L485 AbstractCegarLoop]: Abstraction has 139 states and 324 transitions. [2025-04-13 23:22:04,012 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 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 23:22:04,012 INFO L278 IsEmpty]: Start isEmpty. Operand 139 states and 324 transitions. [2025-04-13 23:22:04,013 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-04-13 23:22:04,013 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:22:04,013 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 23:22:04,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-04-13 23:22:04,217 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 23:22:04,217 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 23:22:04,217 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:22:04,217 INFO L85 PathProgramCache]: Analyzing trace with hash 69965174, now seen corresponding path program 4 times [2025-04-13 23:22:04,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:22:04,218 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94937313] [2025-04-13 23:22:04,218 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:22:04,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:22:04,226 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 24 statements into 2 equivalence classes. [2025-04-13 23:22:04,234 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-04-13 23:22:04,234 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:22:04,234 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:04,340 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-04-13 23:22:04,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:22:04,340 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94937313] [2025-04-13 23:22:04,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94937313] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:22:04,340 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939906210] [2025-04-13 23:22:04,340 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:22:04,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:22:04,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:22:04,344 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 23:22:04,345 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 23:22:04,389 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 24 statements into 2 equivalence classes. [2025-04-13 23:22:04,409 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-04-13 23:22:04,409 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:22:04,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:04,410 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-04-13 23:22:04,411 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:22:04,548 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:22:04,549 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:22:04,562 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:22:04,562 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 27 treesize of output 11 [2025-04-13 23:22:04,635 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 23:22:04,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939906210] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:22:04,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:22:04,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 5] total 12 [2025-04-13 23:22:04,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829042834] [2025-04-13 23:22:04,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:22:04,636 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-04-13 23:22:04,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:22:04,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-04-13 23:22:04,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2025-04-13 23:22:04,636 INFO L87 Difference]: Start difference. First operand 139 states and 324 transitions. Second operand has 14 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:22:04,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:22:04,893 INFO L93 Difference]: Finished difference Result 225 states and 511 transitions. [2025-04-13 23:22:04,893 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-13 23:22:04,894 INFO L79 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2025-04-13 23:22:04,894 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:22:04,895 INFO L225 Difference]: With dead ends: 225 [2025-04-13 23:22:04,895 INFO L226 Difference]: Without dead ends: 177 [2025-04-13 23:22:04,895 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2025-04-13 23:22:04,896 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 113 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:22:04,896 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 18 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 23:22:04,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2025-04-13 23:22:04,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 103. [2025-04-13 23:22:04,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 2.2450980392156863) internal successors, (229), 102 states have internal predecessors, (229), 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 23:22:04,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 229 transitions. [2025-04-13 23:22:04,906 INFO L79 Accepts]: Start accepts. Automaton has 103 states and 229 transitions. Word has length 24 [2025-04-13 23:22:04,907 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:22:04,907 INFO L485 AbstractCegarLoop]: Abstraction has 103 states and 229 transitions. [2025-04-13 23:22:04,907 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:22:04,907 INFO L278 IsEmpty]: Start isEmpty. Operand 103 states and 229 transitions. [2025-04-13 23:22:04,907 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-04-13 23:22:04,908 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:22:04,908 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 23:22:04,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-04-13 23:22:05,112 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 23:22:05,112 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 23:22:05,112 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:22:05,112 INFO L85 PathProgramCache]: Analyzing trace with hash -84044682, now seen corresponding path program 5 times [2025-04-13 23:22:05,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:22:05,112 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138501995] [2025-04-13 23:22:05,113 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:22:05,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:22:05,125 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 24 statements into 3 equivalence classes. [2025-04-13 23:22:05,140 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 24 of 24 statements. [2025-04-13 23:22:05,140 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 23:22:05,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:05,436 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:22:05,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:22:05,436 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138501995] [2025-04-13 23:22:05,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138501995] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:22:05,436 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406671715] [2025-04-13 23:22:05,436 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:22:05,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:22:05,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:22:05,438 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 23:22:05,442 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 23:22:05,501 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 24 statements into 3 equivalence classes. [2025-04-13 23:22:05,522 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 24 of 24 statements. [2025-04-13 23:22:05,522 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 23:22:05,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:05,523 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-13 23:22:05,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:22:05,617 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 23:22:05,617 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:22:05,649 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:22:05,649 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 28 treesize of output 11 [2025-04-13 23:22:05,708 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 23:22:05,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406671715] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:22:05,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:22:05,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 14 [2025-04-13 23:22:05,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3504929] [2025-04-13 23:22:05,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:22:05,709 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 23:22:05,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:22:05,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 23:22:05,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2025-04-13 23:22:05,709 INFO L87 Difference]: Start difference. First operand 103 states and 229 transitions. Second operand has 16 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:22:05,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:22:05,970 INFO L93 Difference]: Finished difference Result 207 states and 473 transitions. [2025-04-13 23:22:05,970 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-04-13 23:22:05,970 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2025-04-13 23:22:05,970 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:22:05,972 INFO L225 Difference]: With dead ends: 207 [2025-04-13 23:22:05,972 INFO L226 Difference]: Without dead ends: 198 [2025-04-13 23:22:05,972 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2025-04-13 23:22:05,973 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 111 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 23:22:05,973 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 28 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 23:22:05,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2025-04-13 23:22:05,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 117. [2025-04-13 23:22:05,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 2.2672413793103448) internal successors, (263), 116 states have internal predecessors, (263), 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 23:22:05,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 263 transitions. [2025-04-13 23:22:05,986 INFO L79 Accepts]: Start accepts. Automaton has 117 states and 263 transitions. Word has length 24 [2025-04-13 23:22:05,986 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:22:05,986 INFO L485 AbstractCegarLoop]: Abstraction has 117 states and 263 transitions. [2025-04-13 23:22:05,986 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:22:05,986 INFO L278 IsEmpty]: Start isEmpty. Operand 117 states and 263 transitions. [2025-04-13 23:22:05,986 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 23:22:05,986 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:22:05,986 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:22:05,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-04-13 23:22:06,187 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 23:22:06,187 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 23:22:06,188 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:22:06,188 INFO L85 PathProgramCache]: Analyzing trace with hash 86359956, now seen corresponding path program 6 times [2025-04-13 23:22:06,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:22:06,188 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953787776] [2025-04-13 23:22:06,188 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:22:06,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:22:06,195 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 3 equivalence classes. [2025-04-13 23:22:06,216 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:22:06,219 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 23:22:06,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:06,284 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-04-13 23:22:06,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:22:06,284 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953787776] [2025-04-13 23:22:06,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953787776] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:22:06,284 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519957900] [2025-04-13 23:22:06,284 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:22:06,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:22:06,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:22:06,286 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 23:22:06,288 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 23:22:06,329 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 3 equivalence classes. [2025-04-13 23:22:06,348 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:22:06,348 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 23:22:06,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:06,349 INFO L256 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 23:22:06,350 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:22:06,372 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-04-13 23:22:06,373 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:22:06,405 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-04-13 23:22:06,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519957900] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:22:06,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:22:06,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2025-04-13 23:22:06,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446964608] [2025-04-13 23:22:06,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:22:06,406 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 23:22:06,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:22:06,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 23:22:06,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-04-13 23:22:06,407 INFO L87 Difference]: Start difference. First operand 117 states and 263 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 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 23:22:06,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:22:06,466 INFO L93 Difference]: Finished difference Result 285 states and 657 transitions. [2025-04-13 23:22:06,466 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 23:22:06,466 INFO L79 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 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 26 [2025-04-13 23:22:06,466 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:22:06,467 INFO L225 Difference]: With dead ends: 285 [2025-04-13 23:22:06,467 INFO L226 Difference]: Without dead ends: 239 [2025-04-13 23:22:06,468 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-04-13 23:22:06,468 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 33 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 23:22:06,468 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 5 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 23:22:06,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2025-04-13 23:22:06,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 212. [2025-04-13 23:22:06,479 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 23:22:06,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 508 transitions. [2025-04-13 23:22:06,480 INFO L79 Accepts]: Start accepts. Automaton has 212 states and 508 transitions. Word has length 26 [2025-04-13 23:22:06,480 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:22:06,480 INFO L485 AbstractCegarLoop]: Abstraction has 212 states and 508 transitions. [2025-04-13 23:22:06,480 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 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 23:22:06,480 INFO L278 IsEmpty]: Start isEmpty. Operand 212 states and 508 transitions. [2025-04-13 23:22:06,481 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-04-13 23:22:06,481 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:22:06,481 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 23:22:06,487 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 23:22:06,684 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 23:22:06,684 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 23:22:06,684 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:22:06,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1289492342, now seen corresponding path program 7 times [2025-04-13 23:22:06,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:22:06,684 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105025117] [2025-04-13 23:22:06,685 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:22:06,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:22:06,691 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-04-13 23:22:06,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 23:22:06,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:22:06,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:06,997 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 23:22:06,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:22:06,997 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105025117] [2025-04-13 23:22:06,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105025117] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:22:06,997 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499069807] [2025-04-13 23:22:06,998 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:22:06,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:22:06,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:22:06,999 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 23:22:07,002 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 23:22:07,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-04-13 23:22:07,068 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 23:22:07,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:22:07,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:07,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-04-13 23:22:07,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:22:07,249 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:22:07,249 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:22:07,276 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:22:07,277 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 27 treesize of output 11 [2025-04-13 23:22:07,338 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-04-13 23:22:07,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499069807] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:22:07,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:22:07,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 5] total 23 [2025-04-13 23:22:07,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982448978] [2025-04-13 23:22:07,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:22:07,338 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 23:22:07,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:22:07,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 23:22:07,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2025-04-13 23:22:07,339 INFO L87 Difference]: Start difference. First operand 212 states and 508 transitions. Second operand has 25 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 24 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 23:22:08,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:22:08,243 INFO L93 Difference]: Finished difference Result 759 states and 1754 transitions. [2025-04-13 23:22:08,243 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-04-13 23:22:08,244 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 24 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 23:22:08,244 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:22:08,247 INFO L225 Difference]: With dead ends: 759 [2025-04-13 23:22:08,247 INFO L226 Difference]: Without dead ends: 629 [2025-04-13 23:22:08,248 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=326, Invalid=2326, Unknown=0, NotChecked=0, Total=2652 [2025-04-13 23:22:08,249 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 369 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 23:22:08,249 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 43 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 23:22:08,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2025-04-13 23:22:08,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 230. [2025-04-13 23:22:08,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 2.497816593886463) internal successors, (572), 229 states have internal predecessors, (572), 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 23:22:08,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 572 transitions. [2025-04-13 23:22:08,270 INFO L79 Accepts]: Start accepts. Automaton has 230 states and 572 transitions. Word has length 28 [2025-04-13 23:22:08,270 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:22:08,270 INFO L485 AbstractCegarLoop]: Abstraction has 230 states and 572 transitions. [2025-04-13 23:22:08,270 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 24 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 23:22:08,270 INFO L278 IsEmpty]: Start isEmpty. Operand 230 states and 572 transitions. [2025-04-13 23:22:08,270 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-04-13 23:22:08,271 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:22:08,271 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 23:22:08,277 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 23:22:08,475 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 23:22:08,475 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 23:22:08,476 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:22:08,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1135482486, now seen corresponding path program 8 times [2025-04-13 23:22:08,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:22:08,476 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138031354] [2025-04-13 23:22:08,476 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:22:08,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:22:08,486 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-04-13 23:22:08,495 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 23:22:08,496 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:22:08,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:08,584 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-04-13 23:22:08,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:22:08,584 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138031354] [2025-04-13 23:22:08,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138031354] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:22:08,584 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123255406] [2025-04-13 23:22:08,584 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:22:08,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:22:08,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:22:08,586 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 23:22:08,588 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 23:22:08,634 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-04-13 23:22:08,665 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 23:22:08,665 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:22:08,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:08,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-04-13 23:22:08,667 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:22:08,840 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:22:08,841 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:22:08,856 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:22:08,856 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 28 treesize of output 11 [2025-04-13 23:22:08,880 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-04-13 23:22:08,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123255406] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:22:08,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:22:08,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 6] total 15 [2025-04-13 23:22:08,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096915523] [2025-04-13 23:22:08,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:22:08,881 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 23:22:08,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:22:08,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 23:22:08,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2025-04-13 23:22:08,882 INFO L87 Difference]: Start difference. First operand 230 states and 572 transitions. Second operand has 17 states, 16 states have (on average 3.0) internal successors, (48), 16 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 23:22:09,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:22:09,372 INFO L93 Difference]: Finished difference Result 468 states and 1120 transitions. [2025-04-13 23:22:09,372 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-13 23:22:09,372 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.0) internal successors, (48), 16 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 28 [2025-04-13 23:22:09,372 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:22:09,374 INFO L225 Difference]: With dead ends: 468 [2025-04-13 23:22:09,374 INFO L226 Difference]: Without dead ends: 368 [2025-04-13 23:22:09,374 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=185, Invalid=1005, Unknown=0, NotChecked=0, Total=1190 [2025-04-13 23:22:09,375 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 170 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 23:22:09,375 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 43 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 23:22:09,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2025-04-13 23:22:09,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 133. [2025-04-13 23:22:09,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 2.2803030303030303) internal successors, (301), 132 states have internal predecessors, (301), 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 23:22:09,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 301 transitions. [2025-04-13 23:22:09,385 INFO L79 Accepts]: Start accepts. Automaton has 133 states and 301 transitions. Word has length 28 [2025-04-13 23:22:09,386 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:22:09,386 INFO L485 AbstractCegarLoop]: Abstraction has 133 states and 301 transitions. [2025-04-13 23:22:09,386 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.0) internal successors, (48), 16 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 23:22:09,386 INFO L278 IsEmpty]: Start isEmpty. Operand 133 states and 301 transitions. [2025-04-13 23:22:09,386 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-04-13 23:22:09,386 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:22:09,386 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 23:22:09,392 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 23:22:09,589 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 23:22:09,589 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 23:22:09,589 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:22:09,590 INFO L85 PathProgramCache]: Analyzing trace with hash -839101066, now seen corresponding path program 9 times [2025-04-13 23:22:09,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:22:09,590 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743544524] [2025-04-13 23:22:09,590 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:22:09,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:22:09,598 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 4 equivalence classes. [2025-04-13 23:22:09,616 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 26 of 28 statements. [2025-04-13 23:22:09,616 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 23:22:09,616 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:09,817 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 23:22:09,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:22:09,818 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743544524] [2025-04-13 23:22:09,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743544524] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:22:09,818 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279118783] [2025-04-13 23:22:09,818 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:22:09,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:22:09,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:22:09,820 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 23:22:09,821 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 23:22:09,866 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 4 equivalence classes. [2025-04-13 23:22:09,885 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 26 of 28 statements. [2025-04-13 23:22:09,885 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 23:22:09,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:09,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-04-13 23:22:09,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:22:09,950 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 15 treesize of output 1 [2025-04-13 23:22:10,156 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 23:22:10,157 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:22:10,457 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 42 treesize of output 38 [2025-04-13 23:22:10,464 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:22:10,465 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 58 treesize of output 45 [2025-04-13 23:22:10,553 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 23:22:10,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279118783] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:22:10,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:22:10,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2025-04-13 23:22:10,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440625914] [2025-04-13 23:22:10,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:22:10,554 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-13 23:22:10,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:22:10,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-13 23:22:10,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2025-04-13 23:22:10,555 INFO L87 Difference]: Start difference. First operand 133 states and 301 transitions. Second operand has 26 states, 25 states have (on average 2.52) internal successors, (63), 25 states have internal predecessors, (63), 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 23:22:11,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:22:11,479 INFO L93 Difference]: Finished difference Result 877 states and 2067 transitions. [2025-04-13 23:22:11,481 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-13 23:22:11,481 INFO L79 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.52) internal successors, (63), 25 states have internal predecessors, (63), 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 23:22:11,481 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:22:11,484 INFO L225 Difference]: With dead ends: 877 [2025-04-13 23:22:11,485 INFO L226 Difference]: Without dead ends: 801 [2025-04-13 23:22:11,486 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=316, Invalid=1490, Unknown=0, NotChecked=0, Total=1806 [2025-04-13 23:22:11,486 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 221 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 23:22:11,486 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 38 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 23:22:11,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2025-04-13 23:22:11,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 293. [2025-04-13 23:22:11,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 2.3116438356164384) internal successors, (675), 292 states have internal predecessors, (675), 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 23:22:11,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 675 transitions. [2025-04-13 23:22:11,525 INFO L79 Accepts]: Start accepts. Automaton has 293 states and 675 transitions. Word has length 28 [2025-04-13 23:22:11,525 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:22:11,526 INFO L485 AbstractCegarLoop]: Abstraction has 293 states and 675 transitions. [2025-04-13 23:22:11,526 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.52) internal successors, (63), 25 states have internal predecessors, (63), 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 23:22:11,526 INFO L278 IsEmpty]: Start isEmpty. Operand 293 states and 675 transitions. [2025-04-13 23:22:11,526 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-04-13 23:22:11,526 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:22:11,526 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 23:22:11,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-04-13 23:22:11,728 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 23:22:11,728 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 23:22:11,728 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:22:11,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1460855621, now seen corresponding path program 10 times [2025-04-13 23:22:11,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:22:11,728 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841876026] [2025-04-13 23:22:11,729 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:22:11,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:22:11,734 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 29 statements into 2 equivalence classes. [2025-04-13 23:22:11,739 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 23:22:11,740 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:22:11,740 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:11,871 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 23:22:11,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:22:11,871 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841876026] [2025-04-13 23:22:11,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841876026] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:22:11,871 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943761291] [2025-04-13 23:22:11,871 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:22:11,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:22:11,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:22:11,873 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 23:22:11,875 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 23:22:11,920 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 29 statements into 2 equivalence classes. [2025-04-13 23:22:11,944 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 23:22:11,944 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:22:11,944 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:11,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-04-13 23:22:11,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:22:24,068 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 14 refuted. 4 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 23:22:24,068 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:22:24,120 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:22:24,120 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 28 treesize of output 11 [2025-04-13 23:22:24,142 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 23:22:24,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943761291] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:22:24,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:22:24,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-04-13 23:22:24,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171670572] [2025-04-13 23:22:24,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:22:24,142 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-04-13 23:22:24,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:22:24,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-04-13 23:22:24,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=121, Unknown=3, NotChecked=0, Total=182 [2025-04-13 23:22:24,143 INFO L87 Difference]: Start difference. First operand 293 states and 675 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 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 23:22:28,359 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-04-13 23:22:28,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:22:28,860 INFO L93 Difference]: Finished difference Result 1020 states and 2432 transitions. [2025-04-13 23:22:28,860 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 23:22:28,860 INFO L79 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 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 23:22:28,861 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:22:28,864 INFO L225 Difference]: With dead ends: 1020 [2025-04-13 23:22:28,864 INFO L226 Difference]: Without dead ends: 769 [2025-04-13 23:22:28,865 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=155, Invalid=304, Unknown=3, NotChecked=0, Total=462 [2025-04-13 23:22:28,866 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 214 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2025-04-13 23:22:28,867 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 14 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 168 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2025-04-13 23:22:28,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2025-04-13 23:22:28,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 277. [2025-04-13 23:22:28,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 2.3152173913043477) internal successors, (639), 276 states have internal predecessors, (639), 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 23:22:28,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 639 transitions. [2025-04-13 23:22:28,908 INFO L79 Accepts]: Start accepts. Automaton has 277 states and 639 transitions. Word has length 29 [2025-04-13 23:22:28,908 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:22:28,908 INFO L485 AbstractCegarLoop]: Abstraction has 277 states and 639 transitions. [2025-04-13 23:22:28,908 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 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 23:22:28,909 INFO L278 IsEmpty]: Start isEmpty. Operand 277 states and 639 transitions. [2025-04-13 23:22:28,909 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-04-13 23:22:28,909 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:22:28,909 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 23:22:28,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-04-13 23:22:29,113 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 23:22:29,113 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 23:22:29,113 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:22:29,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1670467013, now seen corresponding path program 11 times [2025-04-13 23:22:29,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:22:29,114 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748448448] [2025-04-13 23:22:29,114 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:22:29,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:22:29,120 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 33 statements into 5 equivalence classes. [2025-04-13 23:22:29,132 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 33 of 33 statements. [2025-04-13 23:22:29,132 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-04-13 23:22:29,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:29,464 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:22:29,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:22:29,464 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748448448] [2025-04-13 23:22:29,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748448448] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:22:29,465 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432958375] [2025-04-13 23:22:29,465 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:22:29,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:22:29,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:22:29,466 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 23:22:29,467 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 23:22:29,516 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 33 statements into 5 equivalence classes. [2025-04-13 23:22:29,562 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 33 of 33 statements. [2025-04-13 23:22:29,562 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-04-13 23:22:29,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:29,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-04-13 23:22:29,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:22:29,795 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:22:29,795 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:22:29,832 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:22:29,833 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 28 treesize of output 11 [2025-04-13 23:22:29,943 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 23:22:29,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432958375] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:22:29,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:22:29,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 9] total 29 [2025-04-13 23:22:29,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101313256] [2025-04-13 23:22:29,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:22:29,944 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-04-13 23:22:29,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:22:29,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-04-13 23:22:29,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=833, Unknown=0, NotChecked=0, Total=930 [2025-04-13 23:22:29,945 INFO L87 Difference]: Start difference. First operand 277 states and 639 transitions. Second operand has 31 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 30 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 23:22:31,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:22:31,218 INFO L93 Difference]: Finished difference Result 757 states and 1803 transitions. [2025-04-13 23:22:31,218 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-04-13 23:22:31,218 INFO L79 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 30 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 33 [2025-04-13 23:22:31,219 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:22:31,222 INFO L225 Difference]: With dead ends: 757 [2025-04-13 23:22:31,222 INFO L226 Difference]: Without dead ends: 748 [2025-04-13 23:22:31,223 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 761 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=301, Invalid=3005, Unknown=0, NotChecked=0, Total=3306 [2025-04-13 23:22:31,223 INFO L437 NwaCegarLoop]: 6 mSDtfsCounter, 300 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 23:22:31,223 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 95 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1347 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 23:22:31,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2025-04-13 23:22:31,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 291. [2025-04-13 23:22:31,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 2.320689655172414) internal successors, (673), 290 states have internal predecessors, (673), 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 23:22:31,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 673 transitions. [2025-04-13 23:22:31,286 INFO L79 Accepts]: Start accepts. Automaton has 291 states and 673 transitions. Word has length 33 [2025-04-13 23:22:31,287 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:22:31,287 INFO L485 AbstractCegarLoop]: Abstraction has 291 states and 673 transitions. [2025-04-13 23:22:31,287 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 30 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 23:22:31,287 INFO L278 IsEmpty]: Start isEmpty. Operand 291 states and 673 transitions. [2025-04-13 23:22:31,288 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-04-13 23:22:31,288 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:22:31,288 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:22:31,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-04-13 23:22:31,488 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 23:22:31,488 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 23:22:31,489 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:22:31,489 INFO L85 PathProgramCache]: Analyzing trace with hash 247889945, now seen corresponding path program 12 times [2025-04-13 23:22:31,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:22:31,489 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188004272] [2025-04-13 23:22:31,489 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:22:31,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:22:31,495 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 35 statements into 5 equivalence classes. [2025-04-13 23:22:31,516 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 35 of 35 statements. [2025-04-13 23:22:31,517 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-04-13 23:22:31,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:31,595 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 26 proven. 23 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-04-13 23:22:31,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:22:31,595 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188004272] [2025-04-13 23:22:31,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188004272] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:22:31,595 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106969842] [2025-04-13 23:22:31,595 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:22:31,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:22:31,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:22:31,598 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 23:22:31,601 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 23:22:31,652 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 35 statements into 5 equivalence classes. [2025-04-13 23:22:31,716 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 35 of 35 statements. [2025-04-13 23:22:31,716 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-04-13 23:22:31,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:31,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-04-13 23:22:31,719 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:22:31,816 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 20 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-04-13 23:22:31,816 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:22:31,959 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 20 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-04-13 23:22:31,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106969842] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:22:31,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:22:31,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 12] total 19 [2025-04-13 23:22:31,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31929579] [2025-04-13 23:22:31,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:22:31,959 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 23:22:31,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:22:31,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 23:22:31,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2025-04-13 23:22:31,960 INFO L87 Difference]: Start difference. First operand 291 states and 673 transitions. Second operand has 20 states, 20 states have (on average 3.2) internal successors, (64), 19 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 23:22:32,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:22:32,396 INFO L93 Difference]: Finished difference Result 1145 states and 2701 transitions. [2025-04-13 23:22:32,396 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-13 23:22:32,396 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 19 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 35 [2025-04-13 23:22:32,396 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:22:32,400 INFO L225 Difference]: With dead ends: 1145 [2025-04-13 23:22:32,401 INFO L226 Difference]: Without dead ends: 965 [2025-04-13 23:22:32,401 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 56 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=249, Invalid=621, Unknown=0, NotChecked=0, Total=870 [2025-04-13 23:22:32,403 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 174 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 23:22:32,403 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 20 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 23:22:32,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2025-04-13 23:22:32,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 800. [2025-04-13 23:22:32,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 799 states have (on average 2.495619524405507) internal successors, (1994), 799 states have internal predecessors, (1994), 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 23:22:32,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1994 transitions. [2025-04-13 23:22:32,534 INFO L79 Accepts]: Start accepts. Automaton has 800 states and 1994 transitions. Word has length 35 [2025-04-13 23:22:32,534 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:22:32,534 INFO L485 AbstractCegarLoop]: Abstraction has 800 states and 1994 transitions. [2025-04-13 23:22:32,534 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 19 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 23:22:32,534 INFO L278 IsEmpty]: Start isEmpty. Operand 800 states and 1994 transitions. [2025-04-13 23:22:32,535 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-04-13 23:22:32,535 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:22:32,535 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:22:32,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-04-13 23:22:32,736 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 23:22:32,736 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 23:22:32,736 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:22:32,736 INFO L85 PathProgramCache]: Analyzing trace with hash 243127670, now seen corresponding path program 13 times [2025-04-13 23:22:32,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:22:32,736 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152375688] [2025-04-13 23:22:32,737 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:22:32,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:22:32,743 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-04-13 23:22:32,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 23:22:32,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:22:32,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:32,921 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 34 proven. 12 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-04-13 23:22:32,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:22:32,922 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152375688] [2025-04-13 23:22:32,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152375688] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:22:32,922 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524669714] [2025-04-13 23:22:32,922 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:22:32,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:22:32,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:22:32,924 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 23:22:32,928 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 23:22:32,984 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-04-13 23:22:33,003 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 23:22:33,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:22:33,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:33,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 23:22:33,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:22:33,179 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 40 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-04-13 23:22:33,179 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:22:33,362 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 34 proven. 12 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-04-13 23:22:33,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524669714] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:22:33,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:22:33,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2025-04-13 23:22:33,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134352328] [2025-04-13 23:22:33,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:22:33,363 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-13 23:22:33,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:22:33,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-13 23:22:33,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=476, Unknown=0, NotChecked=0, Total=650 [2025-04-13 23:22:33,364 INFO L87 Difference]: Start difference. First operand 800 states and 1994 transitions. Second operand has 26 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 25 states have internal predecessors, (69), 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 23:22:33,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:22:33,853 INFO L93 Difference]: Finished difference Result 1104 states and 2743 transitions. [2025-04-13 23:22:33,853 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-04-13 23:22:33,853 INFO L79 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 25 states have internal predecessors, (69), 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 36 [2025-04-13 23:22:33,853 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:22:33,856 INFO L225 Difference]: With dead ends: 1104 [2025-04-13 23:22:33,857 INFO L226 Difference]: Without dead ends: 623 [2025-04-13 23:22:33,858 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=319, Invalid=871, Unknown=0, NotChecked=0, Total=1190 [2025-04-13 23:22:33,858 INFO L437 NwaCegarLoop]: 5 mSDtfsCounter, 56 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 23:22:33,858 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 32 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 23:22:33,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2025-04-13 23:22:33,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2025-04-13 23:22:33,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 622 states have (on average 2.5418006430868165) internal successors, (1581), 622 states have internal predecessors, (1581), 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 23:22:33,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1581 transitions. [2025-04-13 23:22:33,959 INFO L79 Accepts]: Start accepts. Automaton has 623 states and 1581 transitions. Word has length 36 [2025-04-13 23:22:33,959 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:22:33,959 INFO L485 AbstractCegarLoop]: Abstraction has 623 states and 1581 transitions. [2025-04-13 23:22:33,959 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 25 states have internal predecessors, (69), 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 23:22:33,959 INFO L278 IsEmpty]: Start isEmpty. Operand 623 states and 1581 transitions. [2025-04-13 23:22:33,960 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-04-13 23:22:33,960 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:22:33,960 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 23:22:33,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-04-13 23:22:34,160 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 23:22:34,161 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 23:22:34,161 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:22:34,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1900989115, now seen corresponding path program 14 times [2025-04-13 23:22:34,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:22:34,161 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973726592] [2025-04-13 23:22:34,161 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:22:34,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:22:34,168 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-04-13 23:22:34,182 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-04-13 23:22:34,182 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:22:34,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:34,353 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 19 proven. 39 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-04-13 23:22:34,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:22:34,353 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973726592] [2025-04-13 23:22:34,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973726592] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:22:34,353 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093572291] [2025-04-13 23:22:34,353 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:22:34,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:22:34,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:22:34,355 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 23:22:34,357 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 23:22:34,411 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-04-13 23:22:34,431 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-04-13 23:22:34,432 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:22:34,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:34,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:22:34,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:22:34,644 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 48 proven. 10 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-04-13 23:22:34,644 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:22:34,919 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 25 proven. 33 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-04-13 23:22:34,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093572291] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:22:34,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:22:34,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2025-04-13 23:22:34,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414076500] [2025-04-13 23:22:34,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:22:34,919 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-04-13 23:22:34,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:22:34,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-04-13 23:22:34,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=723, Unknown=0, NotChecked=0, Total=992 [2025-04-13 23:22:34,920 INFO L87 Difference]: Start difference. First operand 623 states and 1581 transitions. Second operand has 32 states, 32 states have (on average 2.59375) internal successors, (83), 31 states have internal predecessors, (83), 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 23:22:35,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:22:35,468 INFO L93 Difference]: Finished difference Result 1267 states and 3086 transitions. [2025-04-13 23:22:35,468 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-13 23:22:35,468 INFO L79 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.59375) internal successors, (83), 31 states have internal predecessors, (83), 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 23:22:35,468 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:22:35,471 INFO L225 Difference]: With dead ends: 1267 [2025-04-13 23:22:35,471 INFO L226 Difference]: Without dead ends: 402 [2025-04-13 23:22:35,472 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=269, Invalid=723, Unknown=0, NotChecked=0, Total=992 [2025-04-13 23:22:35,473 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 35 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 23:22:35,473 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 32 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 23:22:35,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2025-04-13 23:22:35,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 402. [2025-04-13 23:22:35,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 2.4438902743142146) internal successors, (980), 401 states have internal predecessors, (980), 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 23:22:35,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 980 transitions. [2025-04-13 23:22:35,537 INFO L79 Accepts]: Start accepts. Automaton has 402 states and 980 transitions. Word has length 37 [2025-04-13 23:22:35,537 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:22:35,537 INFO L485 AbstractCegarLoop]: Abstraction has 402 states and 980 transitions. [2025-04-13 23:22:35,537 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.59375) internal successors, (83), 31 states have internal predecessors, (83), 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 23:22:35,537 INFO L278 IsEmpty]: Start isEmpty. Operand 402 states and 980 transitions. [2025-04-13 23:22:35,538 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-04-13 23:22:35,538 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:22:35,538 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 23:22:35,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-04-13 23:22:35,738 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 23:22:35,739 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 23:22:35,739 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:22:35,739 INFO L85 PathProgramCache]: Analyzing trace with hash -753311466, now seen corresponding path program 15 times [2025-04-13 23:22:35,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:22:35,739 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211407450] [2025-04-13 23:22:35,739 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:22:35,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:22:35,749 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 7 equivalence classes. [2025-04-13 23:22:35,799 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 36 of 38 statements. [2025-04-13 23:22:35,799 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-13 23:22:35,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:36,799 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 1 proven. 77 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 23:22:36,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:22:36,800 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211407450] [2025-04-13 23:22:36,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211407450] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:22:36,800 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723613620] [2025-04-13 23:22:36,800 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:22:36,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:22:36,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:22:36,802 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 23:22:36,802 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 23:22:36,863 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 7 equivalence classes. [2025-04-13 23:22:37,044 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 36 of 38 statements. [2025-04-13 23:22:37,045 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-13 23:22:37,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:37,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-04-13 23:22:37,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:22:37,575 INFO L325 Elim1Store]: treesize reduction 42, result has 6.7 percent of original size [2025-04-13 23:22:37,576 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 16 [2025-04-13 23:22:37,581 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 12 proven. 64 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 23:22:37,581 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:22:37,977 INFO L325 Elim1Store]: treesize reduction 40, result has 28.6 percent of original size [2025-04-13 23:22:37,977 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 31 [2025-04-13 23:22:38,423 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 3 proven. 73 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 23:22:38,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723613620] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:22:38,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:22:38,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 43 [2025-04-13 23:22:38,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889093610] [2025-04-13 23:22:38,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:22:38,424 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-04-13 23:22:38,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:22:38,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-04-13 23:22:38,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1739, Unknown=0, NotChecked=0, Total=1980 [2025-04-13 23:22:38,425 INFO L87 Difference]: Start difference. First operand 402 states and 980 transitions. Second operand has 45 states, 44 states have (on average 2.227272727272727) internal successors, (98), 44 states have internal predecessors, (98), 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 23:22:47,899 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-04-13 23:22:52,451 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-04-13 23:22:53,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:22:53,048 INFO L93 Difference]: Finished difference Result 2660 states and 6588 transitions. [2025-04-13 23:22:53,048 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-04-13 23:22:53,048 INFO L79 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 2.227272727272727) internal successors, (98), 44 states have internal predecessors, (98), 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 23:22:53,048 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:22:53,057 INFO L225 Difference]: With dead ends: 2660 [2025-04-13 23:22:53,058 INFO L226 Difference]: Without dead ends: 2228 [2025-04-13 23:22:53,060 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1646 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=783, Invalid=6023, Unknown=0, NotChecked=0, Total=6806 [2025-04-13 23:22:53,061 INFO L437 NwaCegarLoop]: 6 mSDtfsCounter, 340 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 1889 mSolverCounterSat, 24 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 1920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1889 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2025-04-13 23:22:53,061 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 121 Invalid, 1920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1889 Invalid, 7 Unknown, 0 Unchecked, 11.9s Time] [2025-04-13 23:22:53,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2025-04-13 23:22:53,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 820. [2025-04-13 23:22:53,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 819 states have (on average 2.5982905982905984) internal successors, (2128), 819 states have internal predecessors, (2128), 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 23:22:53,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 2128 transitions. [2025-04-13 23:22:53,305 INFO L79 Accepts]: Start accepts. Automaton has 820 states and 2128 transitions. Word has length 38 [2025-04-13 23:22:53,305 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:22:53,305 INFO L485 AbstractCegarLoop]: Abstraction has 820 states and 2128 transitions. [2025-04-13 23:22:53,305 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 2.227272727272727) internal successors, (98), 44 states have internal predecessors, (98), 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 23:22:53,305 INFO L278 IsEmpty]: Start isEmpty. Operand 820 states and 2128 transitions. [2025-04-13 23:22:53,306 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-04-13 23:22:53,306 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:22:53,306 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 23:22:53,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-04-13 23:22:53,507 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 23:22:53,507 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 23:22:53,507 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:22:53,507 INFO L85 PathProgramCache]: Analyzing trace with hash -2081153514, now seen corresponding path program 16 times [2025-04-13 23:22:53,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:22:53,507 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835140008] [2025-04-13 23:22:53,507 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:22:53,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:22:53,514 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 38 statements into 2 equivalence classes. [2025-04-13 23:22:53,520 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 23:22:53,520 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:22:53,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:53,682 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 15 proven. 48 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-04-13 23:22:53,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:22:53,682 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835140008] [2025-04-13 23:22:53,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835140008] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:22:53,682 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701058892] [2025-04-13 23:22:53,682 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:22:53,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:22:53,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:22:53,684 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 23:22:53,685 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 23:22:53,743 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 38 statements into 2 equivalence classes. [2025-04-13 23:22:53,773 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 23:22:53,773 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:22:53,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:53,774 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-04-13 23:22:53,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:22:53,852 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-04-13 23:22:53,852 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:22:53,870 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:22:53,870 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 28 treesize of output 11 [2025-04-13 23:22:53,892 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-04-13 23:22:53,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701058892] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:22:53,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:22:53,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2025-04-13 23:22:53,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551862024] [2025-04-13 23:22:53,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:22:53,893 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 23:22:53,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:22:53,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 23:22:53,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2025-04-13 23:22:53,893 INFO L87 Difference]: Start difference. First operand 820 states and 2128 transitions. Second operand has 21 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 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 23:22:54,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:22:54,615 INFO L93 Difference]: Finished difference Result 1323 states and 3411 transitions. [2025-04-13 23:22:54,615 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-13 23:22:54,615 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 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 23:22:54,615 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:22:54,620 INFO L225 Difference]: With dead ends: 1323 [2025-04-13 23:22:54,620 INFO L226 Difference]: Without dead ends: 1088 [2025-04-13 23:22:54,621 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2025-04-13 23:22:54,621 INFO L437 NwaCegarLoop]: 6 mSDtfsCounter, 341 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 23:22:54,621 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 45 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 23:22:54,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2025-04-13 23:22:54,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 467. [2025-04-13 23:22:54,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 466 states have (on average 2.463519313304721) internal successors, (1148), 466 states have internal predecessors, (1148), 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 23:22:54,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 1148 transitions. [2025-04-13 23:22:54,804 INFO L79 Accepts]: Start accepts. Automaton has 467 states and 1148 transitions. Word has length 38 [2025-04-13 23:22:54,804 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:22:54,805 INFO L485 AbstractCegarLoop]: Abstraction has 467 states and 1148 transitions. [2025-04-13 23:22:54,805 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 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 23:22:54,805 INFO L278 IsEmpty]: Start isEmpty. Operand 467 states and 1148 transitions. [2025-04-13 23:22:54,806 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-04-13 23:22:54,806 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:22:54,806 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 23:22:54,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-04-13 23:22:55,006 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 23:22:55,006 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 23:22:55,007 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:22:55,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1358242538, now seen corresponding path program 17 times [2025-04-13 23:22:55,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:22:55,007 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60962646] [2025-04-13 23:22:55,007 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:22:55,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:22:55,014 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 38 statements into 6 equivalence classes. [2025-04-13 23:22:55,025 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 38 of 38 statements. [2025-04-13 23:22:55,025 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-04-13 23:22:55,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:55,442 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:22:55,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:22:55,442 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60962646] [2025-04-13 23:22:55,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60962646] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:22:55,442 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745007667] [2025-04-13 23:22:55,442 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:22:55,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:22:55,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:22:55,444 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 23:22:55,445 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 23:22:55,503 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 38 statements into 6 equivalence classes. [2025-04-13 23:22:55,539 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 38 of 38 statements. [2025-04-13 23:22:55,539 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-04-13 23:22:55,539 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:55,540 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-04-13 23:22:55,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:22:55,755 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 23:22:55,755 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:22:55,801 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:22:55,802 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 28 treesize of output 11 [2025-04-13 23:22:55,933 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 23:22:55,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745007667] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:22:55,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:22:55,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 32 [2025-04-13 23:22:55,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635086622] [2025-04-13 23:22:55,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:22:55,934 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-04-13 23:22:55,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:22:55,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-04-13 23:22:55,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1025, Unknown=0, NotChecked=0, Total=1122 [2025-04-13 23:22:55,935 INFO L87 Difference]: Start difference. First operand 467 states and 1148 transitions. Second operand has 34 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 33 states have internal predecessors, (88), 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 23:22:58,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:22:58,099 INFO L93 Difference]: Finished difference Result 1121 states and 2793 transitions. [2025-04-13 23:22:58,100 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2025-04-13 23:22:58,100 INFO L79 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 33 states have internal predecessors, (88), 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 23:22:58,100 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:22:58,106 INFO L225 Difference]: With dead ends: 1121 [2025-04-13 23:22:58,106 INFO L226 Difference]: Without dead ends: 1105 [2025-04-13 23:22:58,107 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1192 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=424, Invalid=4832, Unknown=0, NotChecked=0, Total=5256 [2025-04-13 23:22:58,108 INFO L437 NwaCegarLoop]: 7 mSDtfsCounter, 397 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2407 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 2424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 23:22:58,108 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 160 Invalid, 2424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2407 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 23:22:58,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2025-04-13 23:22:58,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 497. [2025-04-13 23:22:58,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 2.471774193548387) internal successors, (1226), 496 states have internal predecessors, (1226), 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 23:22:58,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 1226 transitions. [2025-04-13 23:22:58,318 INFO L79 Accepts]: Start accepts. Automaton has 497 states and 1226 transitions. Word has length 38 [2025-04-13 23:22:58,318 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:22:58,318 INFO L485 AbstractCegarLoop]: Abstraction has 497 states and 1226 transitions. [2025-04-13 23:22:58,318 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 33 states have internal predecessors, (88), 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 23:22:58,318 INFO L278 IsEmpty]: Start isEmpty. Operand 497 states and 1226 transitions. [2025-04-13 23:22:58,319 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-04-13 23:22:58,319 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:22:58,319 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 23:22:58,326 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 23:22:58,519 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 23:22:58,520 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 23:22:58,520 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:22:58,520 INFO L85 PathProgramCache]: Analyzing trace with hash -352100300, now seen corresponding path program 18 times [2025-04-13 23:22:58,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:22:58,520 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303557473] [2025-04-13 23:22:58,520 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:22:58,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:22:58,528 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 40 statements into 6 equivalence classes. [2025-04-13 23:22:58,548 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 40 of 40 statements. [2025-04-13 23:22:58,548 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-04-13 23:22:58,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:58,657 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 40 proven. 36 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-04-13 23:22:58,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:22:58,658 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303557473] [2025-04-13 23:22:58,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303557473] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:22:58,658 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713231090] [2025-04-13 23:22:58,658 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:22:58,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:22:58,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:22:58,662 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 23:22:58,675 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 23:22:58,752 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 40 statements into 6 equivalence classes. [2025-04-13 23:22:59,059 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 40 of 40 statements. [2025-04-13 23:22:59,059 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-04-13 23:22:59,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:22:59,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-04-13 23:22:59,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:22:59,177 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 30 proven. 45 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-04-13 23:22:59,177 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:22:59,332 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 30 proven. 45 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-04-13 23:22:59,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713231090] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:22:59,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:22:59,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 14] total 22 [2025-04-13 23:22:59,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249603408] [2025-04-13 23:22:59,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:22:59,332 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 23:22:59,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:22:59,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 23:22:59,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2025-04-13 23:22:59,333 INFO L87 Difference]: Start difference. First operand 497 states and 1226 transitions. Second operand has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 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 23:23:00,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:23:00,159 INFO L93 Difference]: Finished difference Result 1385 states and 3347 transitions. [2025-04-13 23:23:00,159 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-04-13 23:23:00,159 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 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 40 [2025-04-13 23:23:00,159 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:23:00,164 INFO L225 Difference]: With dead ends: 1385 [2025-04-13 23:23:00,164 INFO L226 Difference]: Without dead ends: 1165 [2025-04-13 23:23:00,164 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 64 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=336, Invalid=854, Unknown=0, NotChecked=0, Total=1190 [2025-04-13 23:23:00,165 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 208 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:23:00,165 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 12 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 23:23:00,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2025-04-13 23:23:00,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 923. [2025-04-13 23:23:00,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 923 states, 922 states have (on average 2.561822125813449) internal successors, (2362), 922 states have internal predecessors, (2362), 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 23:23:00,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 2362 transitions. [2025-04-13 23:23:00,448 INFO L79 Accepts]: Start accepts. Automaton has 923 states and 2362 transitions. Word has length 40 [2025-04-13 23:23:00,448 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:23:00,448 INFO L485 AbstractCegarLoop]: Abstraction has 923 states and 2362 transitions. [2025-04-13 23:23:00,448 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 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 23:23:00,448 INFO L278 IsEmpty]: Start isEmpty. Operand 923 states and 2362 transitions. [2025-04-13 23:23:00,449 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-04-13 23:23:00,449 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:23:00,449 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:23:00,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-04-13 23:23:00,650 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 23:23:00,650 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 23:23:00,650 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:23:00,650 INFO L85 PathProgramCache]: Analyzing trace with hash 231050262, now seen corresponding path program 19 times [2025-04-13 23:23:00,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:23:00,650 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586446404] [2025-04-13 23:23:00,650 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:23:00,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:23:00,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-04-13 23:23:00,668 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-04-13 23:23:00,668 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:23:00,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:23:00,848 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 29 proven. 56 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-04-13 23:23:00,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:23:00,848 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586446404] [2025-04-13 23:23:00,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586446404] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:23:00,848 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156635895] [2025-04-13 23:23:00,848 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:23:00,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:23:00,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:23:00,850 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 23:23:00,852 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 23:23:00,911 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-04-13 23:23:00,929 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-04-13 23:23:00,929 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:23:00,929 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:23:00,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-04-13 23:23:00,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:23:01,164 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 75 proven. 16 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-04-13 23:23:01,164 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:23:01,442 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 65 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-04-13 23:23:01,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156635895] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:23:01,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:23:01,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 39 [2025-04-13 23:23:01,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005145840] [2025-04-13 23:23:01,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:23:01,443 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-04-13 23:23:01,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:23:01,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-04-13 23:23:01,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=1262, Unknown=0, NotChecked=0, Total=1560 [2025-04-13 23:23:01,444 INFO L87 Difference]: Start difference. First operand 923 states and 2362 transitions. Second operand has 40 states, 40 states have (on average 2.3) internal successors, (92), 39 states have internal predecessors, (92), 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 23:23:02,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:23:02,658 INFO L93 Difference]: Finished difference Result 1172 states and 2877 transitions. [2025-04-13 23:23:02,658 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-04-13 23:23:02,658 INFO L79 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.3) internal successors, (92), 39 states have internal predecessors, (92), 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 42 [2025-04-13 23:23:02,658 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:23:02,661 INFO L225 Difference]: With dead ends: 1172 [2025-04-13 23:23:02,661 INFO L226 Difference]: Without dead ends: 518 [2025-04-13 23:23:02,663 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=825, Invalid=3597, Unknown=0, NotChecked=0, Total=4422 [2025-04-13 23:23:02,667 INFO L437 NwaCegarLoop]: 7 mSDtfsCounter, 96 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1318 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 23:23:02,667 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 83 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1318 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 23:23:02,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2025-04-13 23:23:02,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 518. [2025-04-13 23:23:02,792 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 23:23:02,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 1267 transitions. [2025-04-13 23:23:02,794 INFO L79 Accepts]: Start accepts. Automaton has 518 states and 1267 transitions. Word has length 42 [2025-04-13 23:23:02,794 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:23:02,794 INFO L485 AbstractCegarLoop]: Abstraction has 518 states and 1267 transitions. [2025-04-13 23:23:02,794 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.3) internal successors, (92), 39 states have internal predecessors, (92), 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 23:23:02,794 INFO L278 IsEmpty]: Start isEmpty. Operand 518 states and 1267 transitions. [2025-04-13 23:23:02,795 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-04-13 23:23:02,795 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:23:02,795 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 23:23:02,805 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 23:23:02,995 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 23:23:02,996 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 23:23:02,996 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:23:02,996 INFO L85 PathProgramCache]: Analyzing trace with hash -260031845, now seen corresponding path program 20 times [2025-04-13 23:23:02,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:23:02,996 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888788285] [2025-04-13 23:23:02,997 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:23:02,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:23:03,004 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-04-13 23:23:03,015 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 23:23:03,015 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:23:03,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:23:03,401 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 12 proven. 80 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-04-13 23:23:03,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:23:03,401 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888788285] [2025-04-13 23:23:03,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888788285] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:23:03,401 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663913604] [2025-04-13 23:23:03,401 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:23:03,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:23:03,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:23:03,403 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 23:23:03,405 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 23:23:03,475 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-04-13 23:23:03,501 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 23:23:03,502 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:23:03,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:23:03,503 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 62 conjuncts are in the unsatisfiable core [2025-04-13 23:23:03,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:23:03,630 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 15 treesize of output 1 [2025-04-13 23:23:03,951 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:23:03,951 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:23:04,418 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 43 treesize of output 39 [2025-04-13 23:23:04,423 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:23:04,423 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 61 treesize of output 47 [2025-04-13 23:23:04,462 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 1 proven. 101 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-04-13 23:23:04,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663913604] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:23:04,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:23:04,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20, 15] total 48 [2025-04-13 23:23:04,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334506817] [2025-04-13 23:23:04,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:23:04,462 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2025-04-13 23:23:04,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:23:04,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2025-04-13 23:23:04,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=2258, Unknown=0, NotChecked=0, Total=2450 [2025-04-13 23:23:04,463 INFO L87 Difference]: Start difference. First operand 518 states and 1267 transitions. Second operand has 50 states, 49 states have (on average 2.183673469387755) internal successors, (107), 49 states have internal predecessors, (107), 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 23:23:28,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:23:28,306 INFO L93 Difference]: Finished difference Result 12843 states and 32125 transitions. [2025-04-13 23:23:28,307 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 274 states. [2025-04-13 23:23:28,307 INFO L79 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 2.183673469387755) internal successors, (107), 49 states have internal predecessors, (107), 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 23:23:28,307 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:23:28,342 INFO L225 Difference]: With dead ends: 12843 [2025-04-13 23:23:28,342 INFO L226 Difference]: Without dead ends: 7549 [2025-04-13 23:23:28,358 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 311 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34368 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=7542, Invalid=90114, Unknown=0, NotChecked=0, Total=97656 [2025-04-13 23:23:28,359 INFO L437 NwaCegarLoop]: 8 mSDtfsCounter, 1559 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 19053 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1559 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 19245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 19053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2025-04-13 23:23:28,359 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1559 Valid, 192 Invalid, 19245 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [192 Valid, 19053 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2025-04-13 23:23:28,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7549 states. [2025-04-13 23:23:28,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7549 to 1994. [2025-04-13 23:23:28,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1994 states, 1993 states have (on average 2.830908178625188) internal successors, (5642), 1993 states have internal predecessors, (5642), 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 23:23:28,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 5642 transitions. [2025-04-13 23:23:28,815 INFO L79 Accepts]: Start accepts. Automaton has 1994 states and 5642 transitions. Word has length 43 [2025-04-13 23:23:28,815 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:23:28,815 INFO L485 AbstractCegarLoop]: Abstraction has 1994 states and 5642 transitions. [2025-04-13 23:23:28,816 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 2.183673469387755) internal successors, (107), 49 states have internal predecessors, (107), 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 23:23:28,816 INFO L278 IsEmpty]: Start isEmpty. Operand 1994 states and 5642 transitions. [2025-04-13 23:23:28,818 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-04-13 23:23:28,818 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:23:28,818 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 23:23:28,824 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 23:23:29,022 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 23:23:29,022 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 23:23:29,022 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:23:29,022 INFO L85 PathProgramCache]: Analyzing trace with hash -414041701, now seen corresponding path program 21 times [2025-04-13 23:23:29,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:23:29,022 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534929625] [2025-04-13 23:23:29,022 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:23:29,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:23:29,029 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 43 statements into 7 equivalence classes. [2025-04-13 23:23:29,060 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 23:23:29,060 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-04-13 23:23:29,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:23:29,201 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 32 proven. 59 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-04-13 23:23:29,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:23:29,202 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534929625] [2025-04-13 23:23:29,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534929625] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:23:29,202 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986949459] [2025-04-13 23:23:29,202 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:23:29,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:23:29,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:23:29,204 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 23:23:29,205 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 23:23:29,272 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 43 statements into 7 equivalence classes. [2025-04-13 23:23:29,526 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 23:23:29,526 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-04-13 23:23:29,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:23:29,528 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 52 conjuncts are in the unsatisfiable core [2025-04-13 23:23:29,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:23:29,722 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:23:29,722 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:23:29,758 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:23:29,759 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 28 treesize of output 11 [2025-04-13 23:23:29,838 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-04-13 23:23:29,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986949459] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:23:29,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:23:29,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 9] total 33 [2025-04-13 23:23:29,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813648788] [2025-04-13 23:23:29,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:23:29,839 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-04-13 23:23:29,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:23:29,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-04-13 23:23:29,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=988, Unknown=0, NotChecked=0, Total=1190 [2025-04-13 23:23:29,840 INFO L87 Difference]: Start difference. First operand 1994 states and 5642 transitions. Second operand has 35 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 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 23:23:33,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:23:33,205 INFO L93 Difference]: Finished difference Result 5406 states and 14196 transitions. [2025-04-13 23:23:33,206 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2025-04-13 23:23:33,206 INFO L79 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 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 23:23:33,206 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:23:33,220 INFO L225 Difference]: With dead ends: 5406 [2025-04-13 23:23:33,220 INFO L226 Difference]: Without dead ends: 4884 [2025-04-13 23:23:33,222 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3287 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=940, Invalid=8566, Unknown=0, NotChecked=0, Total=9506 [2025-04-13 23:23:33,222 INFO L437 NwaCegarLoop]: 7 mSDtfsCounter, 971 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2542 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 2574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-04-13 23:23:33,222 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 90 Invalid, 2574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2542 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-04-13 23:23:33,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4884 states. [2025-04-13 23:23:33,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4884 to 2030. [2025-04-13 23:23:33,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2030 states, 2029 states have (on average 2.812222769837358) internal successors, (5706), 2029 states have internal predecessors, (5706), 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 23:23:33,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2030 states to 2030 states and 5706 transitions. [2025-04-13 23:23:33,813 INFO L79 Accepts]: Start accepts. Automaton has 2030 states and 5706 transitions. Word has length 43 [2025-04-13 23:23:33,813 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:23:33,813 INFO L485 AbstractCegarLoop]: Abstraction has 2030 states and 5706 transitions. [2025-04-13 23:23:33,813 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 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 23:23:33,813 INFO L278 IsEmpty]: Start isEmpty. Operand 2030 states and 5706 transitions. [2025-04-13 23:23:33,815 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-04-13 23:23:33,815 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:23:33,815 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 23:23:33,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-04-13 23:23:34,015 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 23:23:34,016 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 23:23:34,016 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:23:34,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1906342043, now seen corresponding path program 22 times [2025-04-13 23:23:34,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:23:34,016 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572512750] [2025-04-13 23:23:34,017 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:23:34,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:23:34,024 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 43 statements into 2 equivalence classes. [2025-04-13 23:23:34,029 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 23:23:34,029 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:23:34,029 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:23:34,177 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-04-13 23:23:34,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:23:34,177 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572512750] [2025-04-13 23:23:34,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572512750] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:23:34,177 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015007028] [2025-04-13 23:23:34,177 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:23:34,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:23:34,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:23:34,179 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 23:23:34,181 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 23:23:34,248 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 43 statements into 2 equivalence classes. [2025-04-13 23:23:34,293 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 23:23:34,293 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:23:34,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:23:34,294 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-04-13 23:23:34,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:23:34,335 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-04-13 23:23:34,335 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:23:34,350 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:23:34,351 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 28 treesize of output 11 [2025-04-13 23:23:34,379 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-04-13 23:23:34,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015007028] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:23:34,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:23:34,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 10 [2025-04-13 23:23:34,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869737320] [2025-04-13 23:23:34,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:23:34,380 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-13 23:23:34,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:23:34,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-13 23:23:34,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-04-13 23:23:34,381 INFO L87 Difference]: Start difference. First operand 2030 states and 5706 transitions. Second operand has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 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 23:23:38,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:23:38,873 INFO L93 Difference]: Finished difference Result 9289 states and 24510 transitions. [2025-04-13 23:23:38,874 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2025-04-13 23:23:38,874 INFO L79 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 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 23:23:38,874 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:23:38,899 INFO L225 Difference]: With dead ends: 9289 [2025-04-13 23:23:38,899 INFO L226 Difference]: Without dead ends: 8305 [2025-04-13 23:23:38,904 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2200 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=645, Invalid=5517, Unknown=0, NotChecked=0, Total=6162 [2025-04-13 23:23:38,904 INFO L437 NwaCegarLoop]: 7 mSDtfsCounter, 929 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 23:23:38,904 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 51 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 23:23:38,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8305 states. [2025-04-13 23:23:39,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8305 to 2180. [2025-04-13 23:23:39,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2180 states, 2179 states have (on average 2.8159706287287745) internal successors, (6136), 2179 states have internal predecessors, (6136), 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 23:23:39,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 6136 transitions. [2025-04-13 23:23:39,432 INFO L79 Accepts]: Start accepts. Automaton has 2180 states and 6136 transitions. Word has length 43 [2025-04-13 23:23:39,432 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:23:39,432 INFO L485 AbstractCegarLoop]: Abstraction has 2180 states and 6136 transitions. [2025-04-13 23:23:39,433 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 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 23:23:39,433 INFO L278 IsEmpty]: Start isEmpty. Operand 2180 states and 6136 transitions. [2025-04-13 23:23:39,434 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-04-13 23:23:39,434 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:23:39,434 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 23:23:39,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-04-13 23:23:39,635 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 23:23:39,635 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 23:23:39,635 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:23:39,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1587873893, now seen corresponding path program 23 times [2025-04-13 23:23:39,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:23:39,635 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521793380] [2025-04-13 23:23:39,635 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:23:39,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:23:39,642 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 43 statements into 7 equivalence classes. [2025-04-13 23:23:39,655 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 23:23:39,656 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-04-13 23:23:39,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:23:40,083 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:23:40,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:23:40,084 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521793380] [2025-04-13 23:23:40,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521793380] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:23:40,084 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366477168] [2025-04-13 23:23:40,084 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:23:40,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:23:40,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:23:40,085 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 23:23:40,086 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 23:23:40,151 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 43 statements into 7 equivalence classes. [2025-04-13 23:23:40,188 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 23:23:40,188 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-04-13 23:23:40,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:23:40,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-04-13 23:23:40,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:23:40,465 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-04-13 23:23:40,465 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:23:40,481 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:23:40,482 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 28 treesize of output 11 [2025-04-13 23:23:40,642 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 3 proven. 93 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-04-13 23:23:40,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366477168] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:23:40,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:23:40,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 13] total 37 [2025-04-13 23:23:40,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556584616] [2025-04-13 23:23:40,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:23:40,643 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-04-13 23:23:40,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:23:40,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-04-13 23:23:40,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1365, Unknown=0, NotChecked=0, Total=1482 [2025-04-13 23:23:40,643 INFO L87 Difference]: Start difference. First operand 2180 states and 6136 transitions. Second operand has 39 states, 38 states have (on average 2.5526315789473686) internal successors, (97), 38 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:23:53,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:23:53,270 INFO L93 Difference]: Finished difference Result 17498 states and 45803 transitions. [2025-04-13 23:23:53,270 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2025-04-13 23:23:53,270 INFO L79 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.5526315789473686) internal successors, (97), 38 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2025-04-13 23:23:53,270 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:23:53,312 INFO L225 Difference]: With dead ends: 17498 [2025-04-13 23:23:53,312 INFO L226 Difference]: Without dead ends: 15713 [2025-04-13 23:23:53,321 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21135 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3245, Invalid=52215, Unknown=0, NotChecked=0, Total=55460 [2025-04-13 23:23:53,322 INFO L437 NwaCegarLoop]: 7 mSDtfsCounter, 871 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 6825 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 6850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 6825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-04-13 23:23:53,322 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 155 Invalid, 6850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 6825 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-04-13 23:23:53,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15713 states. [2025-04-13 23:23:54,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15713 to 2848. [2025-04-13 23:23:54,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2848 states, 2847 states have (on average 2.8493150684931505) internal successors, (8112), 2847 states have internal predecessors, (8112), 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 23:23:54,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 8112 transitions. [2025-04-13 23:23:54,063 INFO L79 Accepts]: Start accepts. Automaton has 2848 states and 8112 transitions. Word has length 43 [2025-04-13 23:23:54,063 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:23:54,063 INFO L485 AbstractCegarLoop]: Abstraction has 2848 states and 8112 transitions. [2025-04-13 23:23:54,063 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.5526315789473686) internal successors, (97), 38 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:23:54,063 INFO L278 IsEmpty]: Start isEmpty. Operand 2848 states and 8112 transitions. [2025-04-13 23:23:54,065 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-04-13 23:23:54,065 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:23:54,065 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 23:23:54,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-04-13 23:23:54,265 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 23:23:54,266 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 23:23:54,266 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:23:54,266 INFO L85 PathProgramCache]: Analyzing trace with hash -864962917, now seen corresponding path program 24 times [2025-04-13 23:23:54,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:23:54,266 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682434854] [2025-04-13 23:23:54,266 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:23:54,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:23:54,273 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 43 statements into 7 equivalence classes. [2025-04-13 23:23:54,296 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 23:23:54,296 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-04-13 23:23:54,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:23:54,873 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 15 proven. 77 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-04-13 23:23:54,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:23:54,874 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682434854] [2025-04-13 23:23:54,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682434854] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:23:54,874 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526859005] [2025-04-13 23:23:54,874 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:23:54,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:23:54,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:23:54,876 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 23:23:54,877 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 23:23:54,955 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 43 statements into 7 equivalence classes. [2025-04-13 23:23:55,579 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 23:23:55,579 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-04-13 23:23:55,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:23:55,580 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 54 conjuncts are in the unsatisfiable core [2025-04-13 23:23:55,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:23:55,711 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 15 treesize of output 1 [2025-04-13 23:23:56,039 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:23:56,039 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:23:56,459 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 43 treesize of output 39 [2025-04-13 23:23:56,466 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:23:56,466 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 61 treesize of output 47 [2025-04-13 23:23:56,505 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 1 proven. 101 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-04-13 23:23:56,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526859005] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:23:56,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:23:56,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20, 15] total 48 [2025-04-13 23:23:56,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297956848] [2025-04-13 23:23:56,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:23:56,506 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2025-04-13 23:23:56,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:23:56,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2025-04-13 23:23:56,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=2281, Unknown=0, NotChecked=0, Total=2450 [2025-04-13 23:23:56,507 INFO L87 Difference]: Start difference. First operand 2848 states and 8112 transitions. Second operand has 50 states, 49 states have (on average 2.183673469387755) internal successors, (107), 49 states have internal predecessors, (107), 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 23:24:06,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:24:06,232 INFO L93 Difference]: Finished difference Result 8309 states and 21840 transitions. [2025-04-13 23:24:06,233 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2025-04-13 23:24:06,233 INFO L79 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 2.183673469387755) internal successors, (107), 49 states have internal predecessors, (107), 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 23:24:06,233 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:24:06,254 INFO L225 Difference]: With dead ends: 8309 [2025-04-13 23:24:06,254 INFO L226 Difference]: Without dead ends: 7534 [2025-04-13 23:24:06,258 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6826 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2041, Invalid=21215, Unknown=0, NotChecked=0, Total=23256 [2025-04-13 23:24:06,258 INFO L437 NwaCegarLoop]: 8 mSDtfsCounter, 1050 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 4242 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 4306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 4242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-04-13 23:24:06,259 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1050 Valid, 210 Invalid, 4306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 4242 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-04-13 23:24:06,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7534 states. [2025-04-13 23:24:06,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7534 to 2662. [2025-04-13 23:24:06,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2662 states, 2661 states have (on average 2.8357760240511087) internal successors, (7546), 2661 states have internal predecessors, (7546), 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 23:24:06,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2662 states to 2662 states and 7546 transitions. [2025-04-13 23:24:06,959 INFO L79 Accepts]: Start accepts. Automaton has 2662 states and 7546 transitions. Word has length 43 [2025-04-13 23:24:06,959 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:24:06,959 INFO L485 AbstractCegarLoop]: Abstraction has 2662 states and 7546 transitions. [2025-04-13 23:24:06,960 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 2.183673469387755) internal successors, (107), 49 states have internal predecessors, (107), 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 23:24:06,960 INFO L278 IsEmpty]: Start isEmpty. Operand 2662 states and 7546 transitions. [2025-04-13 23:24:06,961 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-04-13 23:24:06,961 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:24:06,961 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 23:24:06,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2025-04-13 23:24:07,161 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 23:24:07,162 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:24:07,162 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:24:07,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1932216933, now seen corresponding path program 25 times [2025-04-13 23:24:07,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:24:07,162 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333998495] [2025-04-13 23:24:07,162 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:24:07,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:24:07,169 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-04-13 23:24:07,180 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 23:24:07,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:24:07,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:24:07,467 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-04-13 23:24:07,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:24:07,467 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333998495] [2025-04-13 23:24:07,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333998495] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:24:07,467 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559824178] [2025-04-13 23:24:07,468 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:24:07,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:24:07,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:24:07,469 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:24:07,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-04-13 23:24:07,548 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-04-13 23:24:07,571 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 23:24:07,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:24:07,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:24:07,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-04-13 23:24:07,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:24:07,824 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-04-13 23:24:07,824 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:24:07,958 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:24:07,958 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 28 treesize of output 11 [2025-04-13 23:24:08,080 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-04-13 23:24:08,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559824178] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:24:08,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:24:08,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 38 [2025-04-13 23:24:08,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473832942] [2025-04-13 23:24:08,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:24:08,080 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-04-13 23:24:08,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:24:08,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-04-13 23:24:08,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1445, Unknown=0, NotChecked=0, Total=1560 [2025-04-13 23:24:08,081 INFO L87 Difference]: Start difference. First operand 2662 states and 7546 transitions. Second operand has 40 states, 39 states have (on average 2.6666666666666665) internal successors, (104), 39 states have internal predecessors, (104), 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 23:24:11,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:24:11,060 INFO L93 Difference]: Finished difference Result 3904 states and 10690 transitions. [2025-04-13 23:24:11,060 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-04-13 23:24:11,060 INFO L79 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.6666666666666665) internal successors, (104), 39 states have internal predecessors, (104), 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 23:24:11,060 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:24:11,069 INFO L225 Difference]: With dead ends: 3904 [2025-04-13 23:24:11,070 INFO L226 Difference]: Without dead ends: 3191 [2025-04-13 23:24:11,071 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=376, Invalid=3784, Unknown=0, NotChecked=0, Total=4160 [2025-04-13 23:24:11,071 INFO L437 NwaCegarLoop]: 8 mSDtfsCounter, 640 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 2363 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 2385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 23:24:11,071 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 153 Invalid, 2385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2363 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 23:24:11,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3191 states. [2025-04-13 23:24:11,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3191 to 241. [2025-04-13 23:24:11,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 2.3125) internal successors, (555), 240 states have internal predecessors, (555), 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 23:24:11,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 555 transitions. [2025-04-13 23:24:11,310 INFO L79 Accepts]: Start accepts. Automaton has 241 states and 555 transitions. Word has length 43 [2025-04-13 23:24:11,310 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:24:11,310 INFO L485 AbstractCegarLoop]: Abstraction has 241 states and 555 transitions. [2025-04-13 23:24:11,310 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.6666666666666665) internal successors, (104), 39 states have internal predecessors, (104), 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 23:24:11,310 INFO L278 IsEmpty]: Start isEmpty. Operand 241 states and 555 transitions. [2025-04-13 23:24:11,311 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-04-13 23:24:11,311 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:24:11,311 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:24:11,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2025-04-13 23:24:11,511 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-04-13 23:24:11,512 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:24:11,512 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:24:11,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1122055892, now seen corresponding path program 26 times [2025-04-13 23:24:11,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:24:11,512 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055970335] [2025-04-13 23:24:11,512 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:24:11,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:24:11,519 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 46 statements into 2 equivalence classes. [2025-04-13 23:24:11,526 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 46 of 46 statements. [2025-04-13 23:24:11,526 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:24:11,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:24:11,631 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 57 proven. 52 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-04-13 23:24:11,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:24:11,631 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055970335] [2025-04-13 23:24:11,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055970335] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:24:11,631 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535833960] [2025-04-13 23:24:11,631 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:24:11,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:24:11,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:24:11,633 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:24:11,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-04-13 23:24:11,717 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 46 statements into 2 equivalence classes. [2025-04-13 23:24:11,743 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 46 of 46 statements. [2025-04-13 23:24:11,744 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:24:11,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:24:11,745 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:24:11,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:24:11,786 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 57 proven. 51 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-04-13 23:24:11,786 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:24:11,854 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 57 proven. 51 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-04-13 23:24:11,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535833960] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:24:11,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:24:11,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 9 [2025-04-13 23:24:11,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181293175] [2025-04-13 23:24:11,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:24:11,854 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-13 23:24:11,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:24:11,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-13 23:24:11,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2025-04-13 23:24:11,855 INFO L87 Difference]: Start difference. First operand 241 states and 555 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:24:12,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:24:12,741 INFO L93 Difference]: Finished difference Result 781 states and 1841 transitions. [2025-04-13 23:24:12,742 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 23:24:12,742 INFO L79 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2025-04-13 23:24:12,742 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:24:12,746 INFO L225 Difference]: With dead ends: 781 [2025-04-13 23:24:12,746 INFO L226 Difference]: Without dead ends: 711 [2025-04-13 23:24:12,747 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 84 SyntacticMatches, 12 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2025-04-13 23:24:12,747 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 85 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:24:12,747 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 10 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 23:24:12,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2025-04-13 23:24:13,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 648. [2025-04-13 23:24:13,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 647 states have (on average 2.454404945904173) internal successors, (1588), 647 states have internal predecessors, (1588), 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 23:24:13,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 1588 transitions. [2025-04-13 23:24:13,264 INFO L79 Accepts]: Start accepts. Automaton has 648 states and 1588 transitions. Word has length 46 [2025-04-13 23:24:13,264 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:24:13,264 INFO L485 AbstractCegarLoop]: Abstraction has 648 states and 1588 transitions. [2025-04-13 23:24:13,264 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:24:13,264 INFO L278 IsEmpty]: Start isEmpty. Operand 648 states and 1588 transitions. [2025-04-13 23:24:13,265 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-04-13 23:24:13,265 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:24:13,265 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:24:13,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-04-13 23:24:13,466 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-04-13 23:24:13,466 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:24:13,466 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:24:13,466 INFO L85 PathProgramCache]: Analyzing trace with hash 160874166, now seen corresponding path program 27 times [2025-04-13 23:24:13,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:24:13,466 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88679469] [2025-04-13 23:24:13,466 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:24:13,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:24:13,480 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 48 statements into 9 equivalence classes. [2025-04-13 23:24:13,520 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 46 of 48 statements. [2025-04-13 23:24:13,521 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-04-13 23:24:13,521 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:24:14,431 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 1 proven. 154 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 23:24:14,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:24:14,432 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88679469] [2025-04-13 23:24:14,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88679469] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:24:14,432 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536592108] [2025-04-13 23:24:14,432 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:24:14,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:24:14,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:24:14,434 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:24:14,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-04-13 23:24:14,509 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 48 statements into 9 equivalence classes. [2025-04-13 23:24:14,855 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 46 of 48 statements. [2025-04-13 23:24:14,855 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-04-13 23:24:14,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:24:14,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 59 conjuncts are in the unsatisfiable core [2025-04-13 23:24:14,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:24:15,058 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 19 treesize of output 1 [2025-04-13 23:24:15,433 INFO L325 Elim1Store]: treesize reduction 60, result has 4.8 percent of original size [2025-04-13 23:24:15,433 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 44 treesize of output 19 [2025-04-13 23:24:15,441 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 27 proven. 125 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-04-13 23:24:15,441 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:24:16,510 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 112 treesize of output 102 [2025-04-13 23:24:16,553 INFO L325 Elim1Store]: treesize reduction 20, result has 75.3 percent of original size [2025-04-13 23:24:16,553 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 163 treesize of output 176 [2025-04-13 23:24:16,971 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 30 proven. 122 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-04-13 23:24:16,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536592108] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:24:16,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:24:16,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 52 [2025-04-13 23:24:16,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474066384] [2025-04-13 23:24:16,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:24:16,972 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2025-04-13 23:24:16,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:24:16,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2025-04-13 23:24:16,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=2502, Unknown=0, NotChecked=0, Total=2862 [2025-04-13 23:24:16,972 INFO L87 Difference]: Start difference. First operand 648 states and 1588 transitions. Second operand has 54 states, 53 states have (on average 1.9433962264150944) internal successors, (103), 53 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:24:25,030 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-04-13 23:24:33,499 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-04-13 23:24:37,646 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-04-13 23:24:44,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:24:44,812 INFO L93 Difference]: Finished difference Result 4957 states and 12300 transitions. [2025-04-13 23:24:44,812 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2025-04-13 23:24:44,812 INFO L79 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 1.9433962264150944) internal successors, (103), 53 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2025-04-13 23:24:44,812 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:24:44,820 INFO L225 Difference]: With dead ends: 4957 [2025-04-13 23:24:44,820 INFO L226 Difference]: Without dead ends: 4223 [2025-04-13 23:24:44,822 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3339 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1823, Invalid=12939, Unknown=0, NotChecked=0, Total=14762 [2025-04-13 23:24:44,822 INFO L437 NwaCegarLoop]: 8 mSDtfsCounter, 553 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 2401 mSolverCounterSat, 36 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 2441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2401 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2025-04-13 23:24:44,823 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 143 Invalid, 2441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2401 Invalid, 4 Unknown, 0 Unchecked, 15.0s Time] [2025-04-13 23:24:44,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4223 states. [2025-04-13 23:24:46,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4223 to 1340. [2025-04-13 23:24:46,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 1339 states have (on average 2.62285287528006) internal successors, (3512), 1339 states have internal predecessors, (3512), 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 23:24:46,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 3512 transitions. [2025-04-13 23:24:46,118 INFO L79 Accepts]: Start accepts. Automaton has 1340 states and 3512 transitions. Word has length 48 [2025-04-13 23:24:46,118 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:24:46,118 INFO L485 AbstractCegarLoop]: Abstraction has 1340 states and 3512 transitions. [2025-04-13 23:24:46,118 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 1.9433962264150944) internal successors, (103), 53 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:24:46,118 INFO L278 IsEmpty]: Start isEmpty. Operand 1340 states and 3512 transitions. [2025-04-13 23:24:46,119 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-04-13 23:24:46,119 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:24:46,119 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:24:46,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-04-13 23:24:46,320 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:24:46,320 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:24:46,320 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:24:46,320 INFO L85 PathProgramCache]: Analyzing trace with hash -444056906, now seen corresponding path program 28 times [2025-04-13 23:24:46,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:24:46,320 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563970794] [2025-04-13 23:24:46,320 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:24:46,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:24:46,328 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 48 statements into 2 equivalence classes. [2025-04-13 23:24:46,334 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 23:24:46,334 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:24:46,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:24:46,544 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-04-13 23:24:46,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:24:46,544 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563970794] [2025-04-13 23:24:46,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563970794] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:24:46,544 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599745000] [2025-04-13 23:24:46,544 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:24:46,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:24:46,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:24:46,546 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:24:46,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-04-13 23:24:46,639 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 48 statements into 2 equivalence classes. [2025-04-13 23:24:46,664 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 23:24:46,664 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:24:46,664 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:24:46,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-04-13 23:24:46,667 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:24:46,715 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-04-13 23:24:46,715 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:24:46,736 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:24:46,737 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 28 treesize of output 11 [2025-04-13 23:24:46,767 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-04-13 23:24:46,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599745000] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:24:46,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:24:46,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2025-04-13 23:24:46,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304992858] [2025-04-13 23:24:46,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:24:46,767 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 23:24:46,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:24:46,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 23:24:46,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2025-04-13 23:24:46,768 INFO L87 Difference]: Start difference. First operand 1340 states and 3512 transitions. Second operand has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:24:58,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:24:58,004 INFO L93 Difference]: Finished difference Result 14253 states and 36557 transitions. [2025-04-13 23:24:58,004 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2025-04-13 23:24:58,004 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2025-04-13 23:24:58,004 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:24:58,030 INFO L225 Difference]: With dead ends: 14253 [2025-04-13 23:24:58,030 INFO L226 Difference]: Without dead ends: 12871 [2025-04-13 23:24:58,036 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28670 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4371, Invalid=60399, Unknown=0, NotChecked=0, Total=64770 [2025-04-13 23:24:58,036 INFO L437 NwaCegarLoop]: 8 mSDtfsCounter, 3762 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1543 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3762 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 23:24:58,036 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [3762 Valid, 76 Invalid, 1628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1543 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 23:24:58,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12871 states. [2025-04-13 23:25:00,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12871 to 3950. [2025-04-13 23:25:00,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3950 states, 3949 states have (on average 2.876677639908838) internal successors, (11360), 3949 states have internal predecessors, (11360), 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 23:25:00,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3950 states to 3950 states and 11360 transitions. [2025-04-13 23:25:00,315 INFO L79 Accepts]: Start accepts. Automaton has 3950 states and 11360 transitions. Word has length 48 [2025-04-13 23:25:00,315 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:25:00,315 INFO L485 AbstractCegarLoop]: Abstraction has 3950 states and 11360 transitions. [2025-04-13 23:25:00,315 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:25:00,315 INFO L278 IsEmpty]: Start isEmpty. Operand 3950 states and 11360 transitions. [2025-04-13 23:25:00,318 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-04-13 23:25:00,318 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:25:00,318 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:25:00,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-04-13 23:25:00,522 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:25:00,522 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:25:00,522 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:25:00,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1511310922, now seen corresponding path program 29 times [2025-04-13 23:25:00,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:25:00,522 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878785143] [2025-04-13 23:25:00,523 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:25:00,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:25:00,530 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 48 statements into 8 equivalence classes. [2025-04-13 23:25:00,546 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 48 of 48 statements. [2025-04-13 23:25:00,546 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-04-13 23:25:00,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:25:01,213 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:25:01,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:25:01,213 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878785143] [2025-04-13 23:25:01,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878785143] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:25:01,213 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815786134] [2025-04-13 23:25:01,213 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:25:01,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:25:01,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:25:01,216 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:25:01,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-04-13 23:25:01,313 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 48 statements into 8 equivalence classes. [2025-04-13 23:25:01,363 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 48 of 48 statements. [2025-04-13 23:25:01,363 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-04-13 23:25:01,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:25:01,365 INFO L256 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 52 conjuncts are in the unsatisfiable core [2025-04-13 23:25:01,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:25:01,911 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:25:01,911 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:25:01,933 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:25:01,933 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 28 treesize of output 11 [2025-04-13 23:25:02,167 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 2 proven. 131 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-04-13 23:25:02,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815786134] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:25:02,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:25:02,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 15] total 49 [2025-04-13 23:25:02,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424520737] [2025-04-13 23:25:02,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:25:02,168 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2025-04-13 23:25:02,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:25:02,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2025-04-13 23:25:02,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2382, Unknown=0, NotChecked=0, Total=2550 [2025-04-13 23:25:02,169 INFO L87 Difference]: Start difference. First operand 3950 states and 11360 transitions. Second operand has 51 states, 50 states have (on average 2.28) internal successors, (114), 50 states have internal predecessors, (114), 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 23:25:35,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:25:35,397 INFO L93 Difference]: Finished difference Result 25808 states and 68801 transitions. [2025-04-13 23:25:35,397 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 267 states. [2025-04-13 23:25:35,398 INFO L79 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 2.28) internal successors, (114), 50 states have internal predecessors, (114), 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 23:25:35,398 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:25:35,447 INFO L225 Difference]: With dead ends: 25808 [2025-04-13 23:25:35,447 INFO L226 Difference]: Without dead ends: 23105 [2025-04-13 23:25:35,458 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35892 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=5784, Invalid=84516, Unknown=0, NotChecked=0, Total=90300 [2025-04-13 23:25:35,459 INFO L437 NwaCegarLoop]: 8 mSDtfsCounter, 855 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 10410 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 10445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 10410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2025-04-13 23:25:35,459 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 201 Invalid, 10445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 10410 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2025-04-13 23:25:35,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23105 states. [2025-04-13 23:25:37,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23105 to 2902. [2025-04-13 23:25:37,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2902 states, 2901 states have (on average 2.801103067907618) internal successors, (8126), 2901 states have internal predecessors, (8126), 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 23:25:37,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2902 states to 2902 states and 8126 transitions. [2025-04-13 23:25:37,976 INFO L79 Accepts]: Start accepts. Automaton has 2902 states and 8126 transitions. Word has length 48 [2025-04-13 23:25:37,977 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:25:37,977 INFO L485 AbstractCegarLoop]: Abstraction has 2902 states and 8126 transitions. [2025-04-13 23:25:37,977 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 2.28) internal successors, (114), 50 states have internal predecessors, (114), 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 23:25:37,977 INFO L278 IsEmpty]: Start isEmpty. Operand 2902 states and 8126 transitions. [2025-04-13 23:25:37,979 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-04-13 23:25:37,979 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:25:37,979 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:25:37,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2025-04-13 23:25:38,184 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:25:38,184 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:25:38,185 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:25:38,185 INFO L85 PathProgramCache]: Analyzing trace with hash -645236554, now seen corresponding path program 30 times [2025-04-13 23:25:38,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:25:38,185 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111353562] [2025-04-13 23:25:38,185 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:25:38,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:25:38,193 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 48 statements into 8 equivalence classes. [2025-04-13 23:25:38,220 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) and asserted 48 of 48 statements. [2025-04-13 23:25:38,220 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2025-04-13 23:25:38,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:25:38,781 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 27 proven. 92 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-04-13 23:25:38,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:25:38,781 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111353562] [2025-04-13 23:25:38,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111353562] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:25:38,781 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609388390] [2025-04-13 23:25:38,782 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:25:38,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:25:38,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:25:38,783 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:25:38,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-04-13 23:25:38,870 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 48 statements into 8 equivalence classes. [2025-04-13 23:25:39,349 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) and asserted 48 of 48 statements. [2025-04-13 23:25:39,349 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2025-04-13 23:25:39,349 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:25:39,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-04-13 23:25:39,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:25:39,599 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-04-13 23:25:39,599 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:25:39,627 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:25:39,627 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 28 treesize of output 11 [2025-04-13 23:25:39,650 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-04-13 23:25:39,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609388390] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:25:39,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:25:39,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 31 [2025-04-13 23:25:39,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631969708] [2025-04-13 23:25:39,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:25:39,651 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-04-13 23:25:39,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:25:39,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-04-13 23:25:39,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=954, Unknown=0, NotChecked=0, Total=1056 [2025-04-13 23:25:39,652 INFO L87 Difference]: Start difference. First operand 2902 states and 8126 transitions. Second operand has 33 states, 32 states have (on average 2.3125) internal successors, (74), 32 states have internal predecessors, (74), 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 23:25:46,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:25:46,180 INFO L93 Difference]: Finished difference Result 4334 states and 11222 transitions. [2025-04-13 23:25:46,180 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2025-04-13 23:25:46,181 INFO L79 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.3125) internal successors, (74), 32 states have internal predecessors, (74), 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 23:25:46,181 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:25:46,192 INFO L225 Difference]: With dead ends: 4334 [2025-04-13 23:25:46,192 INFO L226 Difference]: Without dead ends: 1994 [2025-04-13 23:25:46,195 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2412 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=965, Invalid=8155, Unknown=0, NotChecked=0, Total=9120 [2025-04-13 23:25:46,196 INFO L437 NwaCegarLoop]: 9 mSDtfsCounter, 1094 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 3577 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 3675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 3577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-04-13 23:25:46,196 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 153 Invalid, 3675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 3577 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-04-13 23:25:46,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2025-04-13 23:25:46,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 272. [2025-04-13 23:25:46,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 2.3173431734317345) internal successors, (628), 271 states have internal predecessors, (628), 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 23:25:46,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 628 transitions. [2025-04-13 23:25:46,550 INFO L79 Accepts]: Start accepts. Automaton has 272 states and 628 transitions. Word has length 48 [2025-04-13 23:25:46,550 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:25:46,550 INFO L485 AbstractCegarLoop]: Abstraction has 272 states and 628 transitions. [2025-04-13 23:25:46,550 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.3125) internal successors, (74), 32 states have internal predecessors, (74), 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 23:25:46,550 INFO L278 IsEmpty]: Start isEmpty. Operand 272 states and 628 transitions. [2025-04-13 23:25:46,551 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-04-13 23:25:46,551 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:25:46,551 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:25:46,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-04-13 23:25:46,751 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-04-13 23:25:46,751 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:25:46,752 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:25:46,752 INFO L85 PathProgramCache]: Analyzing trace with hash 142240089, now seen corresponding path program 31 times [2025-04-13 23:25:46,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:25:46,752 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514613058] [2025-04-13 23:25:46,752 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:25:46,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:25:46,761 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-04-13 23:25:46,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-04-13 23:25:46,768 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:25:46,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:25:46,886 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 77 proven. 71 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-04-13 23:25:46,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:25:46,887 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514613058] [2025-04-13 23:25:46,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514613058] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:25:46,887 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695925023] [2025-04-13 23:25:46,887 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:25:46,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:25:46,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:25:46,889 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:25:46,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-04-13 23:25:46,984 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-04-13 23:25:47,011 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-04-13 23:25:47,011 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:25:47,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:25:47,012 INFO L256 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-04-13 23:25:47,013 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:25:47,057 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 77 proven. 70 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2025-04-13 23:25:47,057 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:25:47,165 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 77 proven. 70 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2025-04-13 23:25:47,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695925023] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:25:47,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:25:47,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 10 [2025-04-13 23:25:47,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221954734] [2025-04-13 23:25:47,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:25:47,166 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-13 23:25:47,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:25:47,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-13 23:25:47,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2025-04-13 23:25:47,166 INFO L87 Difference]: Start difference. First operand 272 states and 628 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 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 23:25:48,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:25:48,548 INFO L93 Difference]: Finished difference Result 940 states and 2222 transitions. [2025-04-13 23:25:48,548 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-13 23:25:48,548 INFO L79 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 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 51 [2025-04-13 23:25:48,549 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:25:48,555 INFO L225 Difference]: With dead ends: 940 [2025-04-13 23:25:48,555 INFO L226 Difference]: Without dead ends: 864 [2025-04-13 23:25:48,555 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 93 SyntacticMatches, 14 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2025-04-13 23:25:48,555 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 91 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:25:48,555 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 11 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 23:25:48,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2025-04-13 23:25:49,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 792. [2025-04-13 23:25:49,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 791 states have (on average 2.4563843236409606) internal successors, (1943), 791 states have internal predecessors, (1943), 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 23:25:49,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1943 transitions. [2025-04-13 23:25:49,296 INFO L79 Accepts]: Start accepts. Automaton has 792 states and 1943 transitions. Word has length 51 [2025-04-13 23:25:49,296 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:25:49,296 INFO L485 AbstractCegarLoop]: Abstraction has 792 states and 1943 transitions. [2025-04-13 23:25:49,296 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 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 23:25:49,296 INFO L278 IsEmpty]: Start isEmpty. Operand 792 states and 1943 transitions. [2025-04-13 23:25:49,297 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-04-13 23:25:49,297 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:25:49,297 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:25:49,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2025-04-13 23:25:49,497 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:25:49,497 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:25:49,498 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:25:49,498 INFO L85 PathProgramCache]: Analyzing trace with hash -844274693, now seen corresponding path program 32 times [2025-04-13 23:25:49,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:25:49,498 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255138031] [2025-04-13 23:25:49,498 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:25:49,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:25:49,506 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-04-13 23:25:49,522 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-04-13 23:25:49,523 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:25:49,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:25:49,927 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 30 proven. 133 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-04-13 23:25:49,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:25:49,927 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255138031] [2025-04-13 23:25:49,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255138031] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:25:49,927 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970684361] [2025-04-13 23:25:49,927 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:25:49,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:25:49,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:25:49,929 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:25:49,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-04-13 23:25:50,023 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-04-13 23:25:50,047 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-04-13 23:25:50,047 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:25:50,047 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:25:50,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 72 conjuncts are in the unsatisfiable core [2025-04-13 23:25:50,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:25:50,579 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 211 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:25:50,580 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:25:50,611 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:25:50,611 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 27 treesize of output 11 [2025-04-13 23:25:50,822 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-04-13 23:25:50,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970684361] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:25:50,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:25:50,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 25, 10] total 52 [2025-04-13 23:25:50,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242865602] [2025-04-13 23:25:50,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:25:50,823 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2025-04-13 23:25:50,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:25:50,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2025-04-13 23:25:50,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=2651, Unknown=0, NotChecked=0, Total=2862 [2025-04-13 23:25:50,824 INFO L87 Difference]: Start difference. First operand 792 states and 1943 transitions. Second operand has 54 states, 53 states have (on average 2.4150943396226414) internal successors, (128), 53 states have internal predecessors, (128), 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 23:26:03,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:26:03,328 INFO L93 Difference]: Finished difference Result 4273 states and 10315 transitions. [2025-04-13 23:26:03,329 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2025-04-13 23:26:03,329 INFO L79 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 2.4150943396226414) internal successors, (128), 53 states have internal predecessors, (128), 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 53 [2025-04-13 23:26:03,329 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:26:03,337 INFO L225 Difference]: With dead ends: 4273 [2025-04-13 23:26:03,337 INFO L226 Difference]: Without dead ends: 2613 [2025-04-13 23:26:03,340 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18865 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2538, Invalid=51518, Unknown=0, NotChecked=0, Total=54056 [2025-04-13 23:26:03,341 INFO L437 NwaCegarLoop]: 9 mSDtfsCounter, 1372 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 7899 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 7926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 7899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-04-13 23:26:03,341 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 185 Invalid, 7926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 7899 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-04-13 23:26:03,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2613 states. [2025-04-13 23:26:04,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2613 to 1307. [2025-04-13 23:26:04,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 1306 states have (on average 2.490811638591118) internal successors, (3253), 1306 states have internal predecessors, (3253), 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 23:26:04,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 3253 transitions. [2025-04-13 23:26:04,720 INFO L79 Accepts]: Start accepts. Automaton has 1307 states and 3253 transitions. Word has length 53 [2025-04-13 23:26:04,720 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:26:04,720 INFO L485 AbstractCegarLoop]: Abstraction has 1307 states and 3253 transitions. [2025-04-13 23:26:04,720 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 2.4150943396226414) internal successors, (128), 53 states have internal predecessors, (128), 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 23:26:04,720 INFO L278 IsEmpty]: Start isEmpty. Operand 1307 states and 3253 transitions. [2025-04-13 23:26:04,721 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-04-13 23:26:04,721 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:26:04,721 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:26:04,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-04-13 23:26:04,921 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:26:04,922 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:26:04,922 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:26:04,922 INFO L85 PathProgramCache]: Analyzing trace with hash -998284549, now seen corresponding path program 33 times [2025-04-13 23:26:04,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:26:04,922 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516425927] [2025-04-13 23:26:04,922 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:26:04,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:26:04,930 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 53 statements into 9 equivalence classes. [2025-04-13 23:26:04,982 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 53 of 53 statements. [2025-04-13 23:26:04,983 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-04-13 23:26:04,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:05,343 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 30 proven. 133 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-04-13 23:26:05,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:26:05,343 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516425927] [2025-04-13 23:26:05,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516425927] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:26:05,343 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979927341] [2025-04-13 23:26:05,343 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:26:05,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:26:05,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:26:05,345 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:26:05,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-04-13 23:26:05,444 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 53 statements into 9 equivalence classes. [2025-04-13 23:26:05,630 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 53 of 53 statements. [2025-04-13 23:26:05,630 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-04-13 23:26:05,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:05,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 56 conjuncts are in the unsatisfiable core [2025-04-13 23:26:05,634 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:26:05,774 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 19 treesize of output 1 [2025-04-13 23:26:06,040 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 163 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-04-13 23:26:06,041 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:26:06,731 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 43 treesize of output 39 [2025-04-13 23:26:06,738 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:26:06,738 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 61 treesize of output 47 [2025-04-13 23:26:07,021 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 163 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-04-13 23:26:07,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979927341] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:26:07,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:26:07,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 53 [2025-04-13 23:26:07,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927477637] [2025-04-13 23:26:07,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:26:07,022 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2025-04-13 23:26:07,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:26:07,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2025-04-13 23:26:07,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=501, Invalid=2469, Unknown=0, NotChecked=0, Total=2970 [2025-04-13 23:26:07,023 INFO L87 Difference]: Start difference. First operand 1307 states and 3253 transitions. Second operand has 55 states, 54 states have (on average 1.8888888888888888) internal successors, (102), 54 states have internal predecessors, (102), 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 23:26:10,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:26:10,625 INFO L93 Difference]: Finished difference Result 1798 states and 4331 transitions. [2025-04-13 23:26:10,625 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 23:26:10,626 INFO L79 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 1.8888888888888888) internal successors, (102), 54 states have internal predecessors, (102), 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 53 [2025-04-13 23:26:10,626 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:26:10,634 INFO L225 Difference]: With dead ends: 1798 [2025-04-13 23:26:10,635 INFO L226 Difference]: Without dead ends: 1385 [2025-04-13 23:26:10,635 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1118 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=803, Invalid=4027, Unknown=0, NotChecked=0, Total=4830 [2025-04-13 23:26:10,636 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 261 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1758 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 23:26:10,636 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 48 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1758 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 23:26:10,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2025-04-13 23:26:11,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1179. [2025-04-13 23:26:11,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1178 states have (on average 2.4966044142614603) internal successors, (2941), 1178 states have internal predecessors, (2941), 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 23:26:11,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 2941 transitions. [2025-04-13 23:26:11,779 INFO L79 Accepts]: Start accepts. Automaton has 1179 states and 2941 transitions. Word has length 53 [2025-04-13 23:26:11,779 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:26:11,779 INFO L485 AbstractCegarLoop]: Abstraction has 1179 states and 2941 transitions. [2025-04-13 23:26:11,779 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 1.8888888888888888) internal successors, (102), 54 states have internal predecessors, (102), 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 23:26:11,779 INFO L278 IsEmpty]: Start isEmpty. Operand 1179 states and 2941 transitions. [2025-04-13 23:26:11,780 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-04-13 23:26:11,780 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:26:11,780 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:26:11,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-04-13 23:26:11,981 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-04-13 23:26:11,981 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:26:11,981 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:26:11,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1322099195, now seen corresponding path program 34 times [2025-04-13 23:26:11,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:26:11,981 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246389627] [2025-04-13 23:26:11,981 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:26:11,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:26:11,990 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 53 statements into 2 equivalence classes. [2025-04-13 23:26:11,997 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-04-13 23:26:11,997 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:26:11,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:12,210 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-04-13 23:26:12,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:26:12,210 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246389627] [2025-04-13 23:26:12,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246389627] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:26:12,210 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236788662] [2025-04-13 23:26:12,210 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:26:12,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:26:12,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:26:12,212 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:26:12,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-04-13 23:26:12,322 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 53 statements into 2 equivalence classes. [2025-04-13 23:26:12,378 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-04-13 23:26:12,379 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:26:12,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:12,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-04-13 23:26:12,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:26:12,422 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-04-13 23:26:12,422 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:26:12,435 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:26:12,435 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 28 treesize of output 11 [2025-04-13 23:26:12,465 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-04-13 23:26:12,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236788662] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:26:12,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:26:12,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 12 [2025-04-13 23:26:12,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664653546] [2025-04-13 23:26:12,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:26:12,465 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-04-13 23:26:12,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:26:12,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-04-13 23:26:12,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2025-04-13 23:26:12,466 INFO L87 Difference]: Start difference. First operand 1179 states and 2941 transitions. Second operand has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:22,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:26:22,819 INFO L93 Difference]: Finished difference Result 5979 states and 14453 transitions. [2025-04-13 23:26:22,820 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2025-04-13 23:26:22,820 INFO L79 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2025-04-13 23:26:22,820 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:26:22,833 INFO L225 Difference]: With dead ends: 5979 [2025-04-13 23:26:22,833 INFO L226 Difference]: Without dead ends: 5384 [2025-04-13 23:26:22,835 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4648 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=969, Invalid=11241, Unknown=0, NotChecked=0, Total=12210 [2025-04-13 23:26:22,835 INFO L437 NwaCegarLoop]: 9 mSDtfsCounter, 1489 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1660 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 23:26:22,835 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 81 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1660 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 23:26:22,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5384 states. [2025-04-13 23:26:24,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5384 to 1745. [2025-04-13 23:26:24,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1745 states, 1744 states have (on average 2.634747706422018) internal successors, (4595), 1744 states have internal predecessors, (4595), 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 23:26:24,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 4595 transitions. [2025-04-13 23:26:24,017 INFO L79 Accepts]: Start accepts. Automaton has 1745 states and 4595 transitions. Word has length 53 [2025-04-13 23:26:24,017 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:26:24,017 INFO L485 AbstractCegarLoop]: Abstraction has 1745 states and 4595 transitions. [2025-04-13 23:26:24,017 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:24,017 INFO L278 IsEmpty]: Start isEmpty. Operand 1745 states and 4595 transitions. [2025-04-13 23:26:24,018 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-04-13 23:26:24,018 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:26:24,018 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:26:24,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2025-04-13 23:26:24,218 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-04-13 23:26:24,219 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:26:24,219 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:26:24,219 INFO L85 PathProgramCache]: Analyzing trace with hash 2122850555, now seen corresponding path program 35 times [2025-04-13 23:26:24,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:26:24,219 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635822771] [2025-04-13 23:26:24,219 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:26:24,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:26:24,227 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 53 statements into 9 equivalence classes. [2025-04-13 23:26:24,239 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 53 of 53 statements. [2025-04-13 23:26:24,240 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-04-13 23:26:24,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:24,865 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:26:24,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:26:24,865 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635822771] [2025-04-13 23:26:24,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635822771] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:26:24,865 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825595456] [2025-04-13 23:26:24,865 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:26:24,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:26:24,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:26:24,867 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:26:24,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-04-13 23:26:24,962 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 53 statements into 9 equivalence classes. [2025-04-13 23:26:25,045 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 53 of 53 statements. [2025-04-13 23:26:25,045 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-04-13 23:26:25,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:25,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-04-13 23:26:25,048 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:26:25,562 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-04-13 23:26:25,562 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:26:25,576 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:26:25,576 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 28 treesize of output 11 [2025-04-13 23:26:25,840 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 5 proven. 171 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-04-13 23:26:25,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825595456] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:26:25,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:26:25,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 18, 17] total 50 [2025-04-13 23:26:25,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963810990] [2025-04-13 23:26:25,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:26:25,841 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-04-13 23:26:25,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:26:25,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-04-13 23:26:25,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=2489, Unknown=0, NotChecked=0, Total=2652 [2025-04-13 23:26:25,842 INFO L87 Difference]: Start difference. First operand 1745 states and 4595 transitions. Second operand has 52 states, 51 states have (on average 2.3333333333333335) internal successors, (119), 51 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:57,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:26:57,268 INFO L93 Difference]: Finished difference Result 18511 states and 46969 transitions. [2025-04-13 23:26:57,268 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 330 states. [2025-04-13 23:26:57,268 INFO L79 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.3333333333333335) internal successors, (119), 51 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2025-04-13 23:26:57,268 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:26:57,304 INFO L225 Difference]: With dead ends: 18511 [2025-04-13 23:26:57,304 INFO L226 Difference]: Without dead ends: 17184 [2025-04-13 23:26:57,313 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 358 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51607 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=5031, Invalid=124209, Unknown=0, NotChecked=0, Total=129240 [2025-04-13 23:26:57,313 INFO L437 NwaCegarLoop]: 9 mSDtfsCounter, 1456 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 13800 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1456 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 13842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 13800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2025-04-13 23:26:57,313 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1456 Valid, 272 Invalid, 13842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 13800 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2025-04-13 23:26:57,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17184 states. [2025-04-13 23:26:58,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17184 to 2673. [2025-04-13 23:26:58,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2673 states, 2672 states have (on average 2.7017215568862274) internal successors, (7219), 2672 states have internal predecessors, (7219), 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 23:26:59,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2673 states to 2673 states and 7219 transitions. [2025-04-13 23:26:59,017 INFO L79 Accepts]: Start accepts. Automaton has 2673 states and 7219 transitions. Word has length 53 [2025-04-13 23:26:59,017 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:26:59,017 INFO L485 AbstractCegarLoop]: Abstraction has 2673 states and 7219 transitions. [2025-04-13 23:26:59,017 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.3333333333333335) internal successors, (119), 51 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:59,017 INFO L278 IsEmpty]: Start isEmpty. Operand 2673 states and 7219 transitions. [2025-04-13 23:26:59,019 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-04-13 23:26:59,019 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:26:59,019 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:26:59,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2025-04-13 23:26:59,219 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-04-13 23:26:59,220 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:26:59,220 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:26:59,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1449205765, now seen corresponding path program 36 times [2025-04-13 23:26:59,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:26:59,220 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406505423] [2025-04-13 23:26:59,220 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:26:59,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:26:59,228 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 53 statements into 9 equivalence classes. [2025-04-13 23:26:59,247 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 53 of 53 statements. [2025-04-13 23:26:59,247 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-04-13 23:26:59,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:59,738 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 36 proven. 127 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-04-13 23:26:59,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:26:59,738 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406505423] [2025-04-13 23:26:59,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406505423] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:26:59,738 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347201831] [2025-04-13 23:26:59,738 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:26:59,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:26:59,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:26:59,740 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:26:59,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2025-04-13 23:26:59,839 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 53 statements into 9 equivalence classes. [2025-04-13 23:27:00,158 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 53 of 53 statements. [2025-04-13 23:27:00,159 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-04-13 23:27:00,159 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:27:00,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 23:27:00,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:27:22,258 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 65 proven. 91 refuted. 16 times theorem prover too weak. 40 trivial. 0 not checked. [2025-04-13 23:27:22,259 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:27:22,385 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:27:22,385 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 28 treesize of output 11 [2025-04-13 23:27:22,541 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 14 proven. 158 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-04-13 23:27:22,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347201831] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:27:22,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:27:22,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 14] total 37 [2025-04-13 23:27:22,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292608923] [2025-04-13 23:27:22,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:27:22,542 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-04-13 23:27:22,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:27:22,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-04-13 23:27:22,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1256, Unknown=11, NotChecked=0, Total=1482 [2025-04-13 23:27:22,543 INFO L87 Difference]: Start difference. First operand 2673 states and 7219 transitions. Second operand has 39 states, 38 states have (on average 2.3947368421052633) internal successors, (91), 38 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 23:27:26,581 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-04-13 23:27:34,400 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-04-13 23:27:44,261 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-04-13 23:28:12,677 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-04-13 23:28:17,389 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-04-13 23:28:21,399 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-04-13 23:28:25,405 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-04-13 23:30:34,402 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-04-13 23:30:38,519 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-04-13 23:30:42,957 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-04-13 23:30:47,167 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-04-13 23:30:51,181 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-04-13 23:30:55,186 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-04-13 23:31:00,354 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-04-13 23:31:03,551 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-04-13 23:31:07,562 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-04-13 23:31:12,346 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-04-13 23:31:16,358 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-04-13 23:31:20,365 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-04-13 23:31:24,639 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-04-13 23:31:28,717 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-04-13 23:31:32,724 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-04-13 23:31:37,035 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-04-13 23:31:41,092 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-04-13 23:31:45,099 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-04-13 23:31:49,107 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-04-13 23:31:53,112 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] Received shutdown request... [2025-04-13 23:36:15,551 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-13 23:36:15,551 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-13 23:36:16,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2025-04-13 23:36:16,751 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2025-04-13 23:36:16,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2025-04-13 23:36:16,775 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2025-04-13 23:36:16,778 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 75 SyntacticMatches, 11 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24193 ImplicationChecksByTransitivity, 389.3s TimeCoverageRelationStatistics Valid=7974, Invalid=51666, Unknown=140, NotChecked=0, Total=59780 [2025-04-13 23:36:16,778 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 2499 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 459 mSolverCounterUnsat, 56 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 122.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2499 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 1812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 56 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 122.9s IncrementalHoareTripleChecker+Time [2025-04-13 23:36:16,778 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [2499 Valid, 45 Invalid, 1812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [459 Valid, 1297 Invalid, 56 Unknown, 0 Unchecked, 122.9s Time] [2025-04-13 23:36:16,779 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-13 23:36:16,780 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2025-04-13 23:36:16,780 WARN L610 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (2673states) and FLOYD_HOARE automaton (currently 216 states, 39 states before enhancement),while executing Executor. [2025-04-13 23:36:16,781 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-13 23:36:16,781 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-13 23:36:16,782 INFO L422 BasicCegarLoop]: Path program histogram: [36, 1, 1, 1] [2025-04-13 23:36:16,784 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 23:36:16,784 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 23:36:16,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 11:36:16 BasicIcfg [2025-04-13 23:36:16,785 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 23:36:16,786 INFO L158 Benchmark]: Toolchain (without parser) took 857898.14ms. Allocated memory was 142.6MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 102.2MB in the beginning and 964.6MB in the end (delta: -862.4MB). Peak memory consumption was 686.7MB. Max. memory is 8.0GB. [2025-04-13 23:36:16,786 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 159.4MB. Free memory is still 85.6MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 23:36:16,786 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.40ms. Allocated memory is still 142.6MB. Free memory was 102.2MB in the beginning and 87.6MB in the end (delta: 14.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-13 23:36:16,786 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.13ms. Allocated memory is still 142.6MB. Free memory was 87.6MB in the beginning and 85.4MB in the end (delta: 2.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 23:36:16,786 INFO L158 Benchmark]: Boogie Preprocessor took 53.32ms. Allocated memory is still 142.6MB. Free memory was 85.4MB in the beginning and 83.4MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 23:36:16,786 INFO L158 Benchmark]: IcfgBuilder took 449.24ms. Allocated memory is still 142.6MB. Free memory was 83.4MB in the beginning and 42.1MB in the end (delta: 41.3MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. [2025-04-13 23:36:16,786 INFO L158 Benchmark]: TraceAbstraction took 857078.34ms. Allocated memory was 142.6MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 41.5MB in the beginning and 964.6MB in the end (delta: -923.1MB). Peak memory consumption was 627.9MB. Max. memory is 8.0GB. [2025-04-13 23:36:16,787 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 159.4MB. Free memory is still 85.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 271.40ms. Allocated memory is still 142.6MB. Free memory was 102.2MB in the beginning and 87.6MB in the end (delta: 14.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.13ms. Allocated memory is still 142.6MB. Free memory was 87.6MB in the beginning and 85.4MB in the end (delta: 2.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 53.32ms. Allocated memory is still 142.6MB. Free memory was 85.4MB in the beginning and 83.4MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 8.0GB. * IcfgBuilder took 449.24ms. Allocated memory is still 142.6MB. Free memory was 83.4MB in the beginning and 42.1MB in the end (delta: 41.3MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. * TraceAbstraction took 857078.34ms. Allocated memory was 142.6MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 41.5MB in the beginning and 964.6MB in the end (delta: -923.1MB). Peak memory consumption was 627.9MB. 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 - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while NwaCegarLoop was constructing difference of abstraction (2673states) and FLOYD_HOARE automaton (currently 216 states, 39 states before enhancement),while executing Executor. - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while NwaCegarLoop was constructing difference of abstraction (2673states) and FLOYD_HOARE automaton (currently 216 states, 39 states before enhancement),while executing Executor. - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while NwaCegarLoop was constructing difference of abstraction (2673states) and FLOYD_HOARE automaton (currently 216 states, 39 states before enhancement),while executing Executor. - 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: 857.0s, OverallIterations: 39, TraceHistogramMax: 8, PathProgramHistogramMax: 36, EmptinessCheckTime: 0.0s, AutomataDifference: 761.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 68 mSolverCounterUnknown, 22853 SdHoareTripleChecker+Valid, 187.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22853 mSDsluCounter, 2929 SdHoareTripleChecker+Invalid, 181.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2735 mSDsCounter, 1380 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 93189 IncrementalHoareTripleChecker+Invalid, 94637 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1380 mSolverCounterUnsat, 194 mSDtfsCounter, 93189 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5628 GetRequests, 2178 SyntacticMatches, 55 SemanticMatches, 3394 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246583 ImplicationChecksByTransitivity, 462.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3950occurred in iteration=31, InterpolantAutomatonStates: 2539, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 17.8s AutomataMinimizationTime, 38 MinimizatonAttempts, 94099 StatesRemovedByMinimization, 33 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 4.3s SatisfiabilityAnalysisTime, 63.0s InterpolantComputationTime, 2839 NumberOfCodeBlocks, 2823 NumberOfCodeBlocksAsserted, 287 NumberOfCheckSat, 4125 ConstructedInterpolants, 125 QuantifiedInterpolants, 36585 SizeOfPredicates, 249 NumberOfNonLiveVariables, 9009 ConjunctsInSsa, 1128 ConjunctsInUnsatCore, 111 InterpolantComputations, 3 PerfectInterpolantSequences, 3221/10862 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown !ENTRY org.eclipse.osgi 4 0 2025-04-13 23:36:16.800 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/546927b61/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:289) at java.base/java.io.FileOutputStream.(FileOutputStream.java:230) at java.base/java.io.FileOutputStream.(FileOutputStream.java:179) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1424) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1230) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2492) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2481) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:189) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:208) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:143) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:109) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:439) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:271) at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103) at java.base/java.lang.reflect.Method.invoke(Method.java:580) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:668) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:605) at org.eclipse.equinox.launcher.Main.run(Main.java:1481) at org.eclipse.equinox.launcher.Main.main(Main.java:1454)