/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/popl20-queue-add-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 23:13:28,844 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 23:13:28,879 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 23:13:28,882 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 23:13:28,882 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 23:13:28,896 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 23:13:28,896 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 23:13:28,896 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 23:13:28,896 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 23:13:28,896 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 23:13:28,896 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 23:13:28,896 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 23:13:28,897 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 23:13:28,897 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 23:13:28,897 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 23:13:28,897 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 23:13:28,897 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 23:13:28,897 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 23:13:28,897 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 23:13:28,897 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 23:13:28,897 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 23:13:28,897 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 23:13:28,897 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 23:13:28,897 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 23:13:28,897 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 23:13:28,897 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 23:13:28,897 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 23:13:28,897 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 23:13:28,898 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 23:13:28,898 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 23:13:28,898 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 23:13:28,898 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 23:13:28,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 23:13:28,898 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 23:13:28,898 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 23:13:28,898 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 23:13:28,898 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 23:13:28,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 23:13:28,898 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 23:13:28,898 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 23:13:28,898 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 23:13:28,898 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 23:13:28,898 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 23:13:28,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 23:13:28,898 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 23:13:28,898 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 23:13:28,898 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 23:13:28,899 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 23:13:29,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 23:13:29,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 23:13:29,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 23:13:29,112 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 23:13:29,113 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 23:13:29,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c [2025-04-13 23:13:30,302 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae3990157/4ed9a80b2511428b8de5ccb4c2404eff/FLAGe76e134b7 [2025-04-13 23:13:30,483 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 23:13:30,483 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c [2025-04-13 23:13:30,489 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae3990157/4ed9a80b2511428b8de5ccb4c2404eff/FLAGe76e134b7 [2025-04-13 23:13:31,502 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae3990157/4ed9a80b2511428b8de5ccb4c2404eff [2025-04-13 23:13:31,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 23:13:31,505 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 23:13:31,506 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 23:13:31,506 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 23:13:31,508 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 23:13:31,509 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 11:13:31" (1/1) ... [2025-04-13 23:13:31,509 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f6c1a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:13:31, skipping insertion in model container [2025-04-13 23:13:31,509 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 11:13:31" (1/1) ... [2025-04-13 23:13:31,523 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 23:13:31,671 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c[2722,2735] [2025-04-13 23:13:31,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 23:13:31,689 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 23:13:31,713 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c[2722,2735] [2025-04-13 23:13:31,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 23:13:31,733 INFO L204 MainTranslator]: Completed translation [2025-04-13 23:13:31,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:13:31 WrapperNode [2025-04-13 23:13:31,734 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 23:13:31,735 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 23:13:31,735 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 23:13:31,735 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 23:13:31,739 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:13:31" (1/1) ... [2025-04-13 23:13:31,743 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:13:31" (1/1) ... [2025-04-13 23:13:31,763 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 140 [2025-04-13 23:13:31,763 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 23:13:31,763 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 23:13:31,764 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 23:13:31,764 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 23:13:31,769 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:13:31" (1/1) ... [2025-04-13 23:13:31,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:13:31" (1/1) ... [2025-04-13 23:13:31,771 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:13:31" (1/1) ... [2025-04-13 23:13:31,789 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 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 23:13:31,789 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:13:31" (1/1) ... [2025-04-13 23:13:31,789 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:13:31" (1/1) ... [2025-04-13 23:13:31,796 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:13:31" (1/1) ... [2025-04-13 23:13:31,796 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:13:31" (1/1) ... [2025-04-13 23:13:31,797 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:13:31" (1/1) ... [2025-04-13 23:13:31,798 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:13:31" (1/1) ... [2025-04-13 23:13:31,803 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 23:13:31,804 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-13 23:13:31,804 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-13 23:13:31,804 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-13 23:13:31,804 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:13:31" (1/1) ... [2025-04-13 23:13:31,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 23:13:31,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:13:31,834 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 23:13:31,839 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 23:13:31,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 23:13:31,854 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 23:13:31,854 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 23:13:31,854 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 23:13:31,854 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 23:13:31,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 23:13:31,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 23:13:31,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 23:13:31,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 23:13:31,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 23:13:31,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 23:13:31,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-13 23:13:31,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 23:13:31,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 23:13:31,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 23:13:31,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 23:13:31,855 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 23:13:31,938 INFO L256 CfgBuilder]: Building ICFG [2025-04-13 23:13:31,939 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 23:13:32,125 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 23:13:32,126 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 23:13:32,126 INFO L318 CfgBuilder]: Performing block encoding [2025-04-13 23:13:32,336 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 23:13:32,339 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 23:13:32,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 11:13:32 BoogieIcfgContainer [2025-04-13 23:13:32,340 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-13 23:13:32,346 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 23:13:32,346 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 23:13:32,352 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 23:13:32,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 11:13:31" (1/3) ... [2025-04-13 23:13:32,353 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3920a283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 11:13:32, skipping insertion in model container [2025-04-13 23:13:32,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:13:31" (2/3) ... [2025-04-13 23:13:32,353 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3920a283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 11:13:32, skipping insertion in model container [2025-04-13 23:13:32,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 11:13:32" (3/3) ... [2025-04-13 23:13:32,354 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-2.wvr.c [2025-04-13 23:13:32,372 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 23:13:32,373 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-queue-add-2.wvr.c that has 3 procedures, 21 locations, 23 edges, 1 initial locations, 3 loop locations, and 1 error locations. [2025-04-13 23:13:32,373 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 23:13:32,424 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-13 23:13:32,445 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 25 transitions, 64 flow [2025-04-13 23:13:32,461 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 69 states, 68 states have (on average 2.661764705882353) internal successors, (181), 68 states have internal predecessors, (181), 0 states have call successors, (0), 0 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 23:13:32,480 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 23:13:32,487 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;@777c3396, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 23:13:32,487 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 23:13:32,490 INFO L278 IsEmpty]: Start isEmpty. Operand has 69 states, 68 states have (on average 2.661764705882353) internal successors, (181), 68 states have internal predecessors, (181), 0 states have call successors, (0), 0 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 23:13:32,494 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-04-13 23:13:32,494 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:13:32,494 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:13:32,495 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 23:13:32,499 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:13:32,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1383472021, now seen corresponding path program 1 times [2025-04-13 23:13:32,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:13:32,505 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827146421] [2025-04-13 23:13:32,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:13:32,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:13:32,562 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-13 23:13:32,581 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 23:13:32,582 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:13:32,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:13:32,648 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 23:13:32,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:13:32,648 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827146421] [2025-04-13 23:13:32,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827146421] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 23:13:32,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 23:13:32,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 23:13:32,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240512833] [2025-04-13 23:13:32,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 23:13:32,656 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-04-13 23:13:32,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:13:32,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-04-13 23:13:32,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-04-13 23:13:32,670 INFO L87 Difference]: Start difference. First operand has 69 states, 68 states have (on average 2.661764705882353) internal successors, (181), 68 states have internal predecessors, (181), 0 states have call successors, (0), 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 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 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 23:13:32,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:13:32,719 INFO L93 Difference]: Finished difference Result 84 states and 204 transitions. [2025-04-13 23:13:32,720 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-13 23:13:32,721 INFO L79 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2025-04-13 23:13:32,721 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:13:32,726 INFO L225 Difference]: With dead ends: 84 [2025-04-13 23:13:32,726 INFO L226 Difference]: Without dead ends: 69 [2025-04-13 23:13:32,727 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-04-13 23:13:32,729 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 23:13:32,729 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 23:13:32,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-04-13 23:13:32,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2025-04-13 23:13:32,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 2.4705882352941178) internal successors, (168), 68 states have internal predecessors, (168), 0 states have call successors, (0), 0 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 23:13:32,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 168 transitions. [2025-04-13 23:13:32,758 INFO L79 Accepts]: Start accepts. Automaton has 69 states and 168 transitions. Word has length 14 [2025-04-13 23:13:32,758 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:13:32,759 INFO L485 AbstractCegarLoop]: Abstraction has 69 states and 168 transitions. [2025-04-13 23:13:32,759 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 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 23:13:32,759 INFO L278 IsEmpty]: Start isEmpty. Operand 69 states and 168 transitions. [2025-04-13 23:13:32,759 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 23:13:32,760 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:13:32,761 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:13:32,761 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 23:13:32,761 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 23:13:32,761 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:13:32,761 INFO L85 PathProgramCache]: Analyzing trace with hash 469547910, now seen corresponding path program 1 times [2025-04-13 23:13:32,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:13:32,762 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808601440] [2025-04-13 23:13:32,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:13:32,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:13:32,775 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 23:13:32,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 23:13:32,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:13:32,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:13:32,960 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 23:13:32,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:13:32,961 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808601440] [2025-04-13 23:13:32,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808601440] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 23:13:32,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 23:13:32,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 23:13:32,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639631523] [2025-04-13 23:13:32,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 23:13:32,962 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 23:13:32,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:13:32,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 23:13:32,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 23:13:32,962 INFO L87 Difference]: Start difference. First operand 69 states and 168 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 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 23:13:33,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:13:33,033 INFO L93 Difference]: Finished difference Result 151 states and 370 transitions. [2025-04-13 23:13:33,033 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 23:13:33,034 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 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 23:13:33,034 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:13:33,034 INFO L225 Difference]: With dead ends: 151 [2025-04-13 23:13:33,034 INFO L226 Difference]: Without dead ends: 70 [2025-04-13 23:13:33,035 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 23:13:33,035 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:13:33,035 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 0 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 23:13:33,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2025-04-13 23:13:33,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2025-04-13 23:13:33,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 2.449275362318841) internal successors, (169), 69 states have internal predecessors, (169), 0 states have call successors, (0), 0 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 23:13:33,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 169 transitions. [2025-04-13 23:13:33,041 INFO L79 Accepts]: Start accepts. Automaton has 70 states and 169 transitions. Word has length 15 [2025-04-13 23:13:33,041 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:13:33,041 INFO L485 AbstractCegarLoop]: Abstraction has 70 states and 169 transitions. [2025-04-13 23:13:33,041 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 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 23:13:33,041 INFO L278 IsEmpty]: Start isEmpty. Operand 70 states and 169 transitions. [2025-04-13 23:13:33,042 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 23:13:33,042 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:13:33,042 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:13:33,042 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 23:13:33,042 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 23:13:33,043 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:13:33,043 INFO L85 PathProgramCache]: Analyzing trace with hash 478311278, now seen corresponding path program 1 times [2025-04-13 23:13:33,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:13:33,043 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102711525] [2025-04-13 23:13:33,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:13:33,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:13:33,051 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-13 23:13:33,066 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 23:13:33,066 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:13:33,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:13:33,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:13:33,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:13:33,198 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102711525] [2025-04-13 23:13:33,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102711525] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 23:13:33,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 23:13:33,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 23:13:33,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828727966] [2025-04-13 23:13:33,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 23:13:33,198 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 23:13:33,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:13:33,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 23:13:33,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-04-13 23:13:33,199 INFO L87 Difference]: Start difference. First operand 70 states and 169 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 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 23:13:33,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:13:33,308 INFO L93 Difference]: Finished difference Result 147 states and 345 transitions. [2025-04-13 23:13:33,308 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 23:13:33,308 INFO L79 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2025-04-13 23:13:33,308 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:13:33,309 INFO L225 Difference]: With dead ends: 147 [2025-04-13 23:13:33,309 INFO L226 Difference]: Without dead ends: 138 [2025-04-13 23:13:33,310 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-04-13 23:13:33,310 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:13:33,310 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 23:13:33,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2025-04-13 23:13:33,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 103. [2025-04-13 23:13:33,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 2.3823529411764706) internal successors, (243), 102 states have internal predecessors, (243), 0 states have call successors, (0), 0 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 23:13:33,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 243 transitions. [2025-04-13 23:13:33,317 INFO L79 Accepts]: Start accepts. Automaton has 103 states and 243 transitions. Word has length 16 [2025-04-13 23:13:33,317 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:13:33,317 INFO L485 AbstractCegarLoop]: Abstraction has 103 states and 243 transitions. [2025-04-13 23:13:33,317 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 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 23:13:33,317 INFO L278 IsEmpty]: Start isEmpty. Operand 103 states and 243 transitions. [2025-04-13 23:13:33,317 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 23:13:33,318 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:13:33,318 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 23:13:33,318 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 23:13:33,318 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 23:13:33,318 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:13:33,318 INFO L85 PathProgramCache]: Analyzing trace with hash 6797196, now seen corresponding path program 1 times [2025-04-13 23:13:33,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:13:33,318 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42338147] [2025-04-13 23:13:33,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:13:33,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:13:33,325 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-13 23:13:33,336 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 23:13:33,336 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:13:33,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:13:33,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:13:33,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:13:33,441 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42338147] [2025-04-13 23:13:33,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42338147] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:13:33,441 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232032013] [2025-04-13 23:13:33,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:13:33,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:13:33,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:13:33,443 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 23:13:33,445 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 23:13:33,489 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-13 23:13:33,511 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 23:13:33,512 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:13:33,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:13:33,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 23:13:33,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:13:33,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:13:33,582 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:13:33,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:13:33,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232032013] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:13:33,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:13:33,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-04-13 23:13:33,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959610391] [2025-04-13 23:13:33,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:13:33,665 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-13 23:13:33,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:13:33,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-13 23:13:33,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-04-13 23:13:33,665 INFO L87 Difference]: Start difference. First operand 103 states and 243 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 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 23:13:33,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:13:33,779 INFO L93 Difference]: Finished difference Result 262 states and 622 transitions. [2025-04-13 23:13:33,779 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 23:13:33,779 INFO L79 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 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 23:13:33,779 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:13:33,780 INFO L225 Difference]: With dead ends: 262 [2025-04-13 23:13:33,780 INFO L226 Difference]: Without dead ends: 153 [2025-04-13 23:13:33,780 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-04-13 23:13:33,781 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 54 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:13:33,781 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 0 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 23:13:33,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2025-04-13 23:13:33,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 117. [2025-04-13 23:13:33,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 2.3275862068965516) internal successors, (270), 116 states have internal predecessors, (270), 0 states have call successors, (0), 0 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 23:13:33,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 270 transitions. [2025-04-13 23:13:33,795 INFO L79 Accepts]: Start accepts. Automaton has 117 states and 270 transitions. Word has length 18 [2025-04-13 23:13:33,795 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:13:33,795 INFO L485 AbstractCegarLoop]: Abstraction has 117 states and 270 transitions. [2025-04-13 23:13:33,795 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 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 23:13:33,795 INFO L278 IsEmpty]: Start isEmpty. Operand 117 states and 270 transitions. [2025-04-13 23:13:33,798 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 23:13:33,798 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:13:33,798 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:13:33,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-04-13 23:13:33,999 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 23:13:33,999 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 23:13:33,999 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:13:34,000 INFO L85 PathProgramCache]: Analyzing trace with hash 94512976, now seen corresponding path program 1 times [2025-04-13 23:13:34,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:13:34,000 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127803100] [2025-04-13 23:13:34,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:13:34,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:13:34,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-13 23:13:34,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 23:13:34,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:13:34,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:13:34,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:13:34,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:13:34,077 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127803100] [2025-04-13 23:13:34,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127803100] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 23:13:34,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 23:13:34,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 23:13:34,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387374492] [2025-04-13 23:13:34,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 23:13:34,078 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 23:13:34,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:13:34,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 23:13:34,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-13 23:13:34,079 INFO L87 Difference]: Start difference. First operand 117 states and 270 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 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 23:13:34,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:13:34,139 INFO L93 Difference]: Finished difference Result 243 states and 569 transitions. [2025-04-13 23:13:34,140 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 23:13:34,140 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 23:13:34,140 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:13:34,141 INFO L225 Difference]: With dead ends: 243 [2025-04-13 23:13:34,141 INFO L226 Difference]: Without dead ends: 148 [2025-04-13 23:13:34,142 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-13 23:13:34,142 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:13:34,142 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 23:13:34,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2025-04-13 23:13:34,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 122. [2025-04-13 23:13:34,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.4545454545454546) internal successors, (297), 121 states have internal predecessors, (297), 0 states have call successors, (0), 0 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 23:13:34,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 297 transitions. [2025-04-13 23:13:34,155 INFO L79 Accepts]: Start accepts. Automaton has 122 states and 297 transitions. Word has length 18 [2025-04-13 23:13:34,155 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:13:34,155 INFO L485 AbstractCegarLoop]: Abstraction has 122 states and 297 transitions. [2025-04-13 23:13:34,155 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 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 23:13:34,155 INFO L278 IsEmpty]: Start isEmpty. Operand 122 states and 297 transitions. [2025-04-13 23:13:34,155 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 23:13:34,155 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:13:34,156 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:13:34,156 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-13 23:13:34,156 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 23:13:34,156 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:13:34,156 INFO L85 PathProgramCache]: Analyzing trace with hash -916711772, now seen corresponding path program 2 times [2025-04-13 23:13:34,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:13:34,156 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586867335] [2025-04-13 23:13:34,158 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:13:34,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:13:34,166 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 23:13:34,179 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 19 statements. [2025-04-13 23:13:34,179 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 23:13:34,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:13:34,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:13:34,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:13:34,255 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586867335] [2025-04-13 23:13:34,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586867335] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 23:13:34,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 23:13:34,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 23:13:34,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832858008] [2025-04-13 23:13:34,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 23:13:34,255 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 23:13:34,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:13:34,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 23:13:34,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-13 23:13:34,256 INFO L87 Difference]: Start difference. First operand 122 states and 297 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 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 23:13:34,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:13:34,325 INFO L93 Difference]: Finished difference Result 182 states and 461 transitions. [2025-04-13 23:13:34,325 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 23:13:34,325 INFO L79 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 23:13:34,325 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:13:34,326 INFO L225 Difference]: With dead ends: 182 [2025-04-13 23:13:34,326 INFO L226 Difference]: Without dead ends: 169 [2025-04-13 23:13:34,326 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-13 23:13:34,327 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:13:34,327 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 23:13:34,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2025-04-13 23:13:34,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2025-04-13 23:13:34,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 2.4702380952380953) internal successors, (415), 168 states have internal predecessors, (415), 0 states have call successors, (0), 0 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 23:13:34,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 415 transitions. [2025-04-13 23:13:34,345 INFO L79 Accepts]: Start accepts. Automaton has 169 states and 415 transitions. Word has length 19 [2025-04-13 23:13:34,345 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:13:34,345 INFO L485 AbstractCegarLoop]: Abstraction has 169 states and 415 transitions. [2025-04-13 23:13:34,345 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 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 23:13:34,345 INFO L278 IsEmpty]: Start isEmpty. Operand 169 states and 415 transitions. [2025-04-13 23:13:34,346 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 23:13:34,346 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:13:34,346 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:13:34,346 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-13 23:13:34,346 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 23:13:34,347 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:13:34,347 INFO L85 PathProgramCache]: Analyzing trace with hash -492841722, now seen corresponding path program 1 times [2025-04-13 23:13:34,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:13:34,347 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713667426] [2025-04-13 23:13:34,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:13:34,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:13:34,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 23:13:34,377 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 23:13:34,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:13:34,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:13:34,991 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:13:34,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:13:34,992 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713667426] [2025-04-13 23:13:34,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713667426] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:13:34,992 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918313484] [2025-04-13 23:13:34,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:13:34,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:13:34,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:13:34,995 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 23:13:34,995 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 23:13:35,035 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 23:13:35,054 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 23:13:35,054 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:13:35,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:13:35,055 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-04-13 23:13:35,057 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:13:35,450 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:13:35,450 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:13:35,642 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:13:35,643 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 26 treesize of output 18 [2025-04-13 23:13:35,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:13:35,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918313484] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:13:35,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:13:35,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 30 [2025-04-13 23:13:35,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190186660] [2025-04-13 23:13:35,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:13:35,881 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-04-13 23:13:35,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:13:35,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-04-13 23:13:35,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=861, Unknown=0, NotChecked=0, Total=992 [2025-04-13 23:13:35,882 INFO L87 Difference]: Start difference. First operand 169 states and 415 transitions. Second operand has 32 states, 31 states have (on average 1.935483870967742) internal successors, (60), 31 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 23:13:36,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:13:36,931 INFO L93 Difference]: Finished difference Result 325 states and 752 transitions. [2025-04-13 23:13:36,932 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-04-13 23:13:36,932 INFO L79 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.935483870967742) internal successors, (60), 31 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-04-13 23:13:36,932 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:13:36,933 INFO L225 Difference]: With dead ends: 325 [2025-04-13 23:13:36,934 INFO L226 Difference]: Without dead ends: 293 [2025-04-13 23:13:36,935 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=306, Invalid=1856, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 23:13:36,935 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 168 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 23:13:36,935 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 0 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 23:13:36,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2025-04-13 23:13:36,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 232. [2025-04-13 23:13:36,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 2.4155844155844157) internal successors, (558), 231 states have internal predecessors, (558), 0 states have call successors, (0), 0 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 23:13:36,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 558 transitions. [2025-04-13 23:13:36,954 INFO L79 Accepts]: Start accepts. Automaton has 232 states and 558 transitions. Word has length 21 [2025-04-13 23:13:36,954 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:13:36,954 INFO L485 AbstractCegarLoop]: Abstraction has 232 states and 558 transitions. [2025-04-13 23:13:36,954 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.935483870967742) internal successors, (60), 31 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 23:13:36,954 INFO L278 IsEmpty]: Start isEmpty. Operand 232 states and 558 transitions. [2025-04-13 23:13:36,955 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 23:13:36,955 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:13:36,955 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:13:36,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-04-13 23:13:37,155 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-04-13 23:13:37,155 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 23:13:37,156 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:13:37,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1512377648, now seen corresponding path program 2 times [2025-04-13 23:13:37,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:13:37,156 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676165084] [2025-04-13 23:13:37,156 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:13:37,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:13:37,162 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 23:13:37,170 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 23:13:37,170 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:13:37,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:13:37,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:13:37,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:13:37,579 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676165084] [2025-04-13 23:13:37,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676165084] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:13:37,579 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471880289] [2025-04-13 23:13:37,579 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:13:37,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:13:37,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:13:37,581 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 23:13:37,582 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 23:13:37,617 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 23:13:37,632 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 23:13:37,632 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:13:37,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:13:37,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-04-13 23:13:37,634 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:13:37,830 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 12 treesize of output 3 [2025-04-13 23:13:37,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:13:37,934 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:13:38,088 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:13:38,089 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 26 treesize of output 18 [2025-04-13 23:13:38,310 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:13:38,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471880289] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:13:38,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:13:38,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 30 [2025-04-13 23:13:38,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570142980] [2025-04-13 23:13:38,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:13:38,310 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-04-13 23:13:38,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:13:38,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-04-13 23:13:38,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=853, Unknown=0, NotChecked=0, Total=992 [2025-04-13 23:13:38,311 INFO L87 Difference]: Start difference. First operand 232 states and 558 transitions. Second operand has 32 states, 31 states have (on average 1.935483870967742) internal successors, (60), 31 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 23:13:39,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:13:39,507 INFO L93 Difference]: Finished difference Result 373 states and 850 transitions. [2025-04-13 23:13:39,507 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-04-13 23:13:39,507 INFO L79 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.935483870967742) internal successors, (60), 31 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-04-13 23:13:39,507 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:13:39,509 INFO L225 Difference]: With dead ends: 373 [2025-04-13 23:13:39,509 INFO L226 Difference]: Without dead ends: 321 [2025-04-13 23:13:39,510 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=507, Invalid=2685, Unknown=0, NotChecked=0, Total=3192 [2025-04-13 23:13:39,510 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 185 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 23:13:39,510 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 0 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 23:13:39,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2025-04-13 23:13:39,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 240. [2025-04-13 23:13:39,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 2.418410041841004) internal successors, (578), 239 states have internal predecessors, (578), 0 states have call successors, (0), 0 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 23:13:39,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 578 transitions. [2025-04-13 23:13:39,527 INFO L79 Accepts]: Start accepts. Automaton has 240 states and 578 transitions. Word has length 21 [2025-04-13 23:13:39,527 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:13:39,527 INFO L485 AbstractCegarLoop]: Abstraction has 240 states and 578 transitions. [2025-04-13 23:13:39,527 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.935483870967742) internal successors, (60), 31 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 23:13:39,528 INFO L278 IsEmpty]: Start isEmpty. Operand 240 states and 578 transitions. [2025-04-13 23:13:39,528 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 23:13:39,528 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:13:39,528 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:13:39,533 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 23:13:39,732 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:13:39,732 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 23:13:39,732 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:13:39,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1957871072, now seen corresponding path program 3 times [2025-04-13 23:13:39,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:13:39,732 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659188632] [2025-04-13 23:13:39,732 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:13:39,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:13:39,740 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-04-13 23:13:39,753 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 19 of 21 statements. [2025-04-13 23:13:39,753 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-13 23:13:39,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:13:39,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:13:39,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:13:39,872 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659188632] [2025-04-13 23:13:39,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659188632] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 23:13:39,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 23:13:39,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-13 23:13:39,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419654562] [2025-04-13 23:13:39,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 23:13:39,872 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-13 23:13:39,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:13:39,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-13 23:13:39,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-04-13 23:13:39,873 INFO L87 Difference]: Start difference. First operand 240 states and 578 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:13:39,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:13:39,977 INFO L93 Difference]: Finished difference Result 261 states and 613 transitions. [2025-04-13 23:13:39,977 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 23:13:39,977 INFO L79 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-04-13 23:13:39,977 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:13:39,978 INFO L225 Difference]: With dead ends: 261 [2025-04-13 23:13:39,979 INFO L226 Difference]: Without dead ends: 242 [2025-04-13 23:13:39,979 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-04-13 23:13:39,979 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:13:39,979 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 23:13:39,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2025-04-13 23:13:39,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2025-04-13 23:13:39,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 2.4107883817427385) internal successors, (581), 241 states have internal predecessors, (581), 0 states have call successors, (0), 0 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 23:13:39,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 581 transitions. [2025-04-13 23:13:39,989 INFO L79 Accepts]: Start accepts. Automaton has 242 states and 581 transitions. Word has length 21 [2025-04-13 23:13:39,989 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:13:39,989 INFO L485 AbstractCegarLoop]: Abstraction has 242 states and 581 transitions. [2025-04-13 23:13:39,989 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:13:39,989 INFO L278 IsEmpty]: Start isEmpty. Operand 242 states and 581 transitions. [2025-04-13 23:13:39,989 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-04-13 23:13:39,989 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:13:39,989 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:13:39,990 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-04-13 23:13:39,990 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 23:13:39,990 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:13:39,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1819700562, now seen corresponding path program 4 times [2025-04-13 23:13:39,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:13:39,990 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054462455] [2025-04-13 23:13:39,990 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:13:39,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:13:39,999 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-04-13 23:13:40,012 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-04-13 23:13:40,013 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:13:40,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:13:40,141 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 23:13:40,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:13:40,141 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054462455] [2025-04-13 23:13:40,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054462455] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:13:40,142 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216013511] [2025-04-13 23:13:40,142 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:13:40,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:13:40,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:13:40,144 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 23:13:40,145 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 23:13:40,189 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-04-13 23:13:40,205 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-04-13 23:13:40,205 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:13:40,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:13:40,206 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-04-13 23:13:40,207 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:13:40,328 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:13:40,328 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:13:40,392 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:13:40,393 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 26 treesize of output 18 [2025-04-13 23:13:40,422 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 23:13:40,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216013511] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:13:40,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:13:40,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 16 [2025-04-13 23:13:40,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118955853] [2025-04-13 23:13:40,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:13:40,422 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 23:13:40,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:13:40,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 23:13:40,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2025-04-13 23:13:40,423 INFO L87 Difference]: Start difference. First operand 242 states and 581 transitions. Second operand has 18 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:13:40,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:13:40,645 INFO L93 Difference]: Finished difference Result 290 states and 667 transitions. [2025-04-13 23:13:40,645 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-13 23:13:40,645 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-04-13 23:13:40,645 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:13:40,646 INFO L225 Difference]: With dead ends: 290 [2025-04-13 23:13:40,646 INFO L226 Difference]: Without dead ends: 264 [2025-04-13 23:13:40,647 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2025-04-13 23:13:40,647 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 23:13:40,647 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 23:13:40,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2025-04-13 23:13:40,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 229. [2025-04-13 23:13:40,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 2.4210526315789473) internal successors, (552), 228 states have internal predecessors, (552), 0 states have call successors, (0), 0 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 23:13:40,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 552 transitions. [2025-04-13 23:13:40,661 INFO L79 Accepts]: Start accepts. Automaton has 229 states and 552 transitions. Word has length 22 [2025-04-13 23:13:40,661 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:13:40,662 INFO L485 AbstractCegarLoop]: Abstraction has 229 states and 552 transitions. [2025-04-13 23:13:40,662 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:13:40,662 INFO L278 IsEmpty]: Start isEmpty. Operand 229 states and 552 transitions. [2025-04-13 23:13:40,662 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-04-13 23:13:40,662 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:13:40,662 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:13:40,669 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 23:13:40,863 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:13:40,863 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 23:13:40,863 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:13:40,864 INFO L85 PathProgramCache]: Analyzing trace with hash 2069838534, now seen corresponding path program 5 times [2025-04-13 23:13:40,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:13:40,864 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899824451] [2025-04-13 23:13:40,864 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:13:40,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:13:40,873 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 3 equivalence classes. [2025-04-13 23:13:40,890 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 22 of 22 statements. [2025-04-13 23:13:40,890 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 23:13:40,890 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:13:41,563 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:13:41,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:13:41,563 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899824451] [2025-04-13 23:13:41,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899824451] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:13:41,563 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572499245] [2025-04-13 23:13:41,563 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:13:41,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:13:41,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:13:41,565 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 23:13:41,569 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 23:13:41,604 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 3 equivalence classes. [2025-04-13 23:13:41,620 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 22 of 22 statements. [2025-04-13 23:13:41,620 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 23:13:41,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:13:41,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-04-13 23:13:41,623 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:13:41,811 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:13:41,811 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:13:41,899 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:13:41,899 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 26 treesize of output 18 [2025-04-13 23:13:41,943 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 23:13:41,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572499245] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-13 23:13:41,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-13 23:13:41,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12, 8] total 24 [2025-04-13 23:13:41,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462721566] [2025-04-13 23:13:41,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 23:13:41,944 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-13 23:13:41,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:13:41,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-13 23:13:41,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2025-04-13 23:13:41,944 INFO L87 Difference]: Start difference. First operand 229 states and 552 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:13:42,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:13:42,082 INFO L93 Difference]: Finished difference Result 267 states and 618 transitions. [2025-04-13 23:13:42,083 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 23:13:42,083 INFO L79 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-04-13 23:13:42,083 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:13:42,084 INFO L225 Difference]: With dead ends: 267 [2025-04-13 23:13:42,084 INFO L226 Difference]: Without dead ends: 246 [2025-04-13 23:13:42,084 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2025-04-13 23:13:42,085 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:13:42,085 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 23:13:42,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2025-04-13 23:13:42,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 225. [2025-04-13 23:13:42,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 2.419642857142857) internal successors, (542), 224 states have internal predecessors, (542), 0 states have call successors, (0), 0 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 23:13:42,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 542 transitions. [2025-04-13 23:13:42,094 INFO L79 Accepts]: Start accepts. Automaton has 225 states and 542 transitions. Word has length 22 [2025-04-13 23:13:42,094 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:13:42,094 INFO L485 AbstractCegarLoop]: Abstraction has 225 states and 542 transitions. [2025-04-13 23:13:42,094 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:13:42,094 INFO L278 IsEmpty]: Start isEmpty. Operand 225 states and 542 transitions. [2025-04-13 23:13:42,094 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-04-13 23:13:42,095 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:13:42,095 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:13:42,100 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 23:13:42,295 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-04-13 23:13:42,295 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 23:13:42,295 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:13:42,296 INFO L85 PathProgramCache]: Analyzing trace with hash 2092140516, now seen corresponding path program 1 times [2025-04-13 23:13:42,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:13:42,296 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544228806] [2025-04-13 23:13:42,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:13:42,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:13:42,300 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-04-13 23:13:42,304 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 23:13:42,304 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:13:42,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:13:42,385 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:13:42,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:13:42,385 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544228806] [2025-04-13 23:13:42,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544228806] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:13:42,386 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763624038] [2025-04-13 23:13:42,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:13:42,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:13:42,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:13:42,388 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 23:13:42,389 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 23:13:42,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-04-13 23:13:42,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 23:13:42,441 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:13:42,441 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:13:42,442 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 23:13:42,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:13:42,520 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:13:42,520 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:13:42,604 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:13:42,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763624038] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:13:42,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:13:42,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2025-04-13 23:13:42,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674268020] [2025-04-13 23:13:42,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:13:42,604 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 23:13:42,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:13:42,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 23:13:42,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2025-04-13 23:13:42,605 INFO L87 Difference]: Start difference. First operand 225 states and 542 transitions. Second operand has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 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 23:13:42,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:13:42,725 INFO L93 Difference]: Finished difference Result 473 states and 1130 transitions. [2025-04-13 23:13:42,725 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 23:13:42,725 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 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 23:13:42,725 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:13:42,726 INFO L225 Difference]: With dead ends: 473 [2025-04-13 23:13:42,726 INFO L226 Difference]: Without dead ends: 255 [2025-04-13 23:13:42,727 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2025-04-13 23:13:42,727 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:13:42,727 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 0 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 23:13:42,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2025-04-13 23:13:42,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 203. [2025-04-13 23:13:42,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 2.3465346534653464) internal successors, (474), 202 states have internal predecessors, (474), 0 states have call successors, (0), 0 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 23:13:42,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 474 transitions. [2025-04-13 23:13:42,742 INFO L79 Accepts]: Start accepts. Automaton has 203 states and 474 transitions. Word has length 23 [2025-04-13 23:13:42,743 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:13:42,743 INFO L485 AbstractCegarLoop]: Abstraction has 203 states and 474 transitions. [2025-04-13 23:13:42,743 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 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 23:13:42,743 INFO L278 IsEmpty]: Start isEmpty. Operand 203 states and 474 transitions. [2025-04-13 23:13:42,743 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-04-13 23:13:42,743 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:13:42,743 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:13:42,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-04-13 23:13:42,943 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:13:42,944 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 23:13:42,944 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:13:42,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1175616792, now seen corresponding path program 6 times [2025-04-13 23:13:42,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:13:42,944 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383615241] [2025-04-13 23:13:42,944 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:13:42,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:13:42,949 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 23 statements into 3 equivalence classes. [2025-04-13 23:13:42,955 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 23 statements. [2025-04-13 23:13:42,955 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 23:13:42,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:13:43,022 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:13:43,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:13:43,023 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383615241] [2025-04-13 23:13:43,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383615241] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:13:43,023 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283428766] [2025-04-13 23:13:43,023 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:13:43,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:13:43,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:13:43,024 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 23:13:43,026 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 23:13:43,064 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 23 statements into 3 equivalence classes. [2025-04-13 23:13:43,076 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 23 statements. [2025-04-13 23:13:43,077 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 23:13:43,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:13:43,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 23:13:43,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:13:43,102 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:13:43,102 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:13:43,122 INFO L325 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-04-13 23:13:43,122 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2025-04-13 23:13:43,131 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:13:43,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283428766] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:13:43,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:13:43,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2025-04-13 23:13:43,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389820414] [2025-04-13 23:13:43,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:13:43,132 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 23:13:43,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:13:43,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 23:13:43,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-04-13 23:13:43,132 INFO L87 Difference]: Start difference. First operand 203 states and 474 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:13:43,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:13:43,350 INFO L93 Difference]: Finished difference Result 300 states and 651 transitions. [2025-04-13 23:13:43,350 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-13 23:13:43,350 INFO L79 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-04-13 23:13:43,350 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:13:43,352 INFO L225 Difference]: With dead ends: 300 [2025-04-13 23:13:43,352 INFO L226 Difference]: Without dead ends: 229 [2025-04-13 23:13:43,352 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2025-04-13 23:13:43,352 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 23:13:43,352 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 0 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 23:13:43,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2025-04-13 23:13:43,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 174. [2025-04-13 23:13:43,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 2.4104046242774566) internal successors, (417), 173 states have internal predecessors, (417), 0 states have call successors, (0), 0 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 23:13:43,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 417 transitions. [2025-04-13 23:13:43,360 INFO L79 Accepts]: Start accepts. Automaton has 174 states and 417 transitions. Word has length 23 [2025-04-13 23:13:43,360 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:13:43,360 INFO L485 AbstractCegarLoop]: Abstraction has 174 states and 417 transitions. [2025-04-13 23:13:43,360 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:13:43,360 INFO L278 IsEmpty]: Start isEmpty. Operand 174 states and 417 transitions. [2025-04-13 23:13:43,361 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-04-13 23:13:43,361 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:13:43,361 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:13:43,367 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 23:13:43,561 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:13:43,562 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 23:13:43,562 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:13:43,562 INFO L85 PathProgramCache]: Analyzing trace with hash 242435084, now seen corresponding path program 2 times [2025-04-13 23:13:43,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:13:43,562 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269795359] [2025-04-13 23:13:43,562 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:13:43,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:13:43,569 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-04-13 23:13:43,578 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-04-13 23:13:43,578 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:13:43,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:13:43,777 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:13:43,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:13:43,778 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269795359] [2025-04-13 23:13:43,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269795359] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:13:43,778 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957532410] [2025-04-13 23:13:43,778 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:13:43,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:13:43,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:13:43,780 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 23:13:43,781 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 23:13:43,817 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-04-13 23:13:43,833 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-04-13 23:13:43,833 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:13:43,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:13:43,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-04-13 23:13:43,835 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:13:44,100 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 23:13:44,100 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2025-04-13 23:13:44,111 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:13:44,111 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:13:44,230 INFO L325 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-04-13 23:13:44,230 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2025-04-13 23:13:44,481 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:13:44,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957532410] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:13:44,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:13:44,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2025-04-13 23:13:44,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290059159] [2025-04-13 23:13:44,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:13:44,482 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-04-13 23:13:44,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:13:44,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-04-13 23:13:44,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=729, Unknown=0, NotChecked=0, Total=870 [2025-04-13 23:13:44,482 INFO L87 Difference]: Start difference. First operand 174 states and 417 transitions. Second operand has 30 states, 30 states have (on average 2.2) internal successors, (66), 29 states have internal predecessors, (66), 0 states have call successors, (0), 0 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 23:13:45,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:13:45,960 INFO L93 Difference]: Finished difference Result 1011 states and 2608 transitions. [2025-04-13 23:13:45,960 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-04-13 23:13:45,960 INFO L79 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.2) internal successors, (66), 29 states have internal predecessors, (66), 0 states have call successors, (0), 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 23:13:45,960 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:13:45,964 INFO L225 Difference]: With dead ends: 1011 [2025-04-13 23:13:45,964 INFO L226 Difference]: Without dead ends: 957 [2025-04-13 23:13:45,965 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1112 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1018, Invalid=3952, Unknown=0, NotChecked=0, Total=4970 [2025-04-13 23:13:45,965 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 262 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1580 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 23:13:45,965 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 0 Invalid, 1623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1580 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 23:13:45,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2025-04-13 23:13:45,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 475. [2025-04-13 23:13:45,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 474 states have (on average 2.6666666666666665) internal successors, (1264), 474 states have internal predecessors, (1264), 0 states have call successors, (0), 0 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 23:13:45,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 1264 transitions. [2025-04-13 23:13:45,991 INFO L79 Accepts]: Start accepts. Automaton has 475 states and 1264 transitions. Word has length 24 [2025-04-13 23:13:45,991 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:13:45,991 INFO L485 AbstractCegarLoop]: Abstraction has 475 states and 1264 transitions. [2025-04-13 23:13:45,991 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.2) internal successors, (66), 29 states have internal predecessors, (66), 0 states have call successors, (0), 0 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 23:13:45,991 INFO L278 IsEmpty]: Start isEmpty. Operand 475 states and 1264 transitions. [2025-04-13 23:13:45,992 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-04-13 23:13:45,992 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:13:45,992 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:13:45,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-04-13 23:13:46,192 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,SelfDestructingSolverStorable13 [2025-04-13 23:13:46,193 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 23:13:46,193 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:13:46,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1905711052, now seen corresponding path program 3 times [2025-04-13 23:13:46,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:13:46,193 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888478706] [2025-04-13 23:13:46,193 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:13:46,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:13:46,197 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 24 statements into 3 equivalence classes. [2025-04-13 23:13:46,203 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 23 of 24 statements. [2025-04-13 23:13:46,203 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 23:13:46,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:13:46,292 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 23:13:46,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:13:46,292 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888478706] [2025-04-13 23:13:46,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888478706] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:13:46,292 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994456050] [2025-04-13 23:13:46,292 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:13:46,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:13:46,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:13:46,295 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 23:13:46,296 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 23:13:46,333 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 24 statements into 3 equivalence classes. [2025-04-13 23:13:46,349 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 23 of 24 statements. [2025-04-13 23:13:46,349 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 23:13:46,349 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:13:46,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-13 23:13:46,351 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:13:46,410 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 23:13:46,411 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:13:46,430 INFO L325 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-04-13 23:13:46,430 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 26 treesize of output 14 [2025-04-13 23:13:46,438 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 23:13:46,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994456050] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:13:46,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:13:46,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 10 [2025-04-13 23:13:46,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165993887] [2025-04-13 23:13:46,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:13:46,438 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-13 23:13:46,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:13:46,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-13 23:13:46,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-04-13 23:13:46,439 INFO L87 Difference]: Start difference. First operand 475 states and 1264 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 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 23:13:46,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:13:46,689 INFO L93 Difference]: Finished difference Result 947 states and 2553 transitions. [2025-04-13 23:13:46,692 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-13 23:13:46,692 INFO L79 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 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 23:13:46,693 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:13:46,696 INFO L225 Difference]: With dead ends: 947 [2025-04-13 23:13:46,697 INFO L226 Difference]: Without dead ends: 932 [2025-04-13 23:13:46,697 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2025-04-13 23:13:46,697 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 90 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 23:13:46,697 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 0 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 23:13:46,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2025-04-13 23:13:46,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 447. [2025-04-13 23:13:46,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 2.6390134529147984) internal successors, (1177), 446 states have internal predecessors, (1177), 0 states have call successors, (0), 0 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 23:13:46,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1177 transitions. [2025-04-13 23:13:46,726 INFO L79 Accepts]: Start accepts. Automaton has 447 states and 1177 transitions. Word has length 24 [2025-04-13 23:13:46,726 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:13:46,727 INFO L485 AbstractCegarLoop]: Abstraction has 447 states and 1177 transitions. [2025-04-13 23:13:46,727 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 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 23:13:46,727 INFO L278 IsEmpty]: Start isEmpty. Operand 447 states and 1177 transitions. [2025-04-13 23:13:46,727 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 23:13:46,727 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:13:46,728 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:13:46,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-04-13 23:13:46,928 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-04-13 23:13:46,928 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 23:13:46,928 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:13:46,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1050757230, now seen corresponding path program 4 times [2025-04-13 23:13:46,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:13:46,929 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645726445] [2025-04-13 23:13:46,929 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:13:46,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:13:46,933 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-04-13 23:13:46,942 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:13:46,942 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:13:46,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:13:47,395 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:13:47,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:13:47,395 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645726445] [2025-04-13 23:13:47,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645726445] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:13:47,395 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070581540] [2025-04-13 23:13:47,395 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:13:47,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:13:47,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:13:47,399 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 23:13:47,399 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 23:13:47,438 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-04-13 23:13:47,458 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:13:47,458 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:13:47,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:13:47,459 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-04-13 23:13:47,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:13:47,998 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:13:47,999 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:13:48,266 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:13:48,267 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 51 treesize of output 53 [2025-04-13 23:13:48,482 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:13:48,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070581540] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:13:48,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:13:48,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 45 [2025-04-13 23:13:48,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477857467] [2025-04-13 23:13:48,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:13:48,483 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-04-13 23:13:48,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:13:48,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-04-13 23:13:48,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1917, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 23:13:48,484 INFO L87 Difference]: Start difference. First operand 447 states and 1177 transitions. Second operand has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 23:13:51,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:13:51,180 INFO L93 Difference]: Finished difference Result 825 states and 2052 transitions. [2025-04-13 23:13:51,180 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2025-04-13 23:13:51,181 INFO L79 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 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 23:13:51,181 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:13:51,184 INFO L225 Difference]: With dead ends: 825 [2025-04-13 23:13:51,184 INFO L226 Difference]: Without dead ends: 810 [2025-04-13 23:13:51,186 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2416 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1023, Invalid=7533, Unknown=0, NotChecked=0, Total=8556 [2025-04-13 23:13:51,187 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 558 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2336 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 2336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-04-13 23:13:51,187 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 0 Invalid, 2480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 2336 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-04-13 23:13:51,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2025-04-13 23:13:51,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 505. [2025-04-13 23:13:51,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 504 states have (on average 2.632936507936508) internal successors, (1327), 504 states have internal predecessors, (1327), 0 states have call successors, (0), 0 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 23:13:51,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 1327 transitions. [2025-04-13 23:13:51,230 INFO L79 Accepts]: Start accepts. Automaton has 505 states and 1327 transitions. Word has length 26 [2025-04-13 23:13:51,230 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:13:51,230 INFO L485 AbstractCegarLoop]: Abstraction has 505 states and 1327 transitions. [2025-04-13 23:13:51,230 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 23:13:51,230 INFO L278 IsEmpty]: Start isEmpty. Operand 505 states and 1327 transitions. [2025-04-13 23:13:51,231 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 23:13:51,231 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:13:51,231 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:13:51,237 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 23:13:51,435 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,SelfDestructingSolverStorable15 [2025-04-13 23:13:51,435 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 23:13:51,435 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:13:51,435 INFO L85 PathProgramCache]: Analyzing trace with hash -373744104, now seen corresponding path program 5 times [2025-04-13 23:13:51,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:13:51,435 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264810571] [2025-04-13 23:13:51,436 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:13:51,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:13:51,441 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 3 equivalence classes. [2025-04-13 23:13:51,452 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:13:51,453 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 23:13:51,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:13:51,926 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:13:51,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:13:51,926 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264810571] [2025-04-13 23:13:51,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264810571] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:13:51,926 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393434856] [2025-04-13 23:13:51,927 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:13:51,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:13:51,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:13:51,928 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 23:13:51,929 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 23:13:51,978 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 3 equivalence classes. [2025-04-13 23:13:51,995 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:13:51,996 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 23:13:51,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:13:51,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-04-13 23:13:51,998 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:13:52,435 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:13:52,435 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 7 [2025-04-13 23:13:52,508 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:13:52,508 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:13:52,875 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:13:52,875 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 63 treesize of output 56 [2025-04-13 23:13:53,161 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:13:53,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393434856] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:13:53,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:13:53,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 44 [2025-04-13 23:13:53,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735592462] [2025-04-13 23:13:53,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:13:53,162 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-04-13 23:13:53,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:13:53,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-04-13 23:13:53,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1823, Unknown=0, NotChecked=0, Total=2070 [2025-04-13 23:13:53,163 INFO L87 Difference]: Start difference. First operand 505 states and 1327 transitions. Second operand has 46 states, 45 states have (on average 1.6666666666666667) internal successors, (75), 45 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 23:13:58,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:13:58,238 INFO L93 Difference]: Finished difference Result 1717 states and 4490 transitions. [2025-04-13 23:13:58,238 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2025-04-13 23:13:58,238 INFO L79 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.6666666666666667) internal successors, (75), 45 states have internal predecessors, (75), 0 states have call successors, (0), 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 23:13:58,238 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:13:58,244 INFO L225 Difference]: With dead ends: 1717 [2025-04-13 23:13:58,244 INFO L226 Difference]: Without dead ends: 1630 [2025-04-13 23:13:58,246 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4720 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1843, Invalid=13163, Unknown=0, NotChecked=0, Total=15006 [2025-04-13 23:13:58,246 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 452 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3846 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 3846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-04-13 23:13:58,247 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 0 Invalid, 4131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 3846 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-04-13 23:13:58,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2025-04-13 23:13:58,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 597. [2025-04-13 23:13:58,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 596 states have (on average 2.709731543624161) internal successors, (1615), 596 states have internal predecessors, (1615), 0 states have call successors, (0), 0 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 23:13:58,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 1615 transitions. [2025-04-13 23:13:58,305 INFO L79 Accepts]: Start accepts. Automaton has 597 states and 1615 transitions. Word has length 26 [2025-04-13 23:13:58,305 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:13:58,305 INFO L485 AbstractCegarLoop]: Abstraction has 597 states and 1615 transitions. [2025-04-13 23:13:58,305 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.6666666666666667) internal successors, (75), 45 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 23:13:58,305 INFO L278 IsEmpty]: Start isEmpty. Operand 597 states and 1615 transitions. [2025-04-13 23:13:58,306 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 23:13:58,306 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:13:58,306 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:13:58,312 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 23:13:58,511 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,SelfDestructingSolverStorable16 [2025-04-13 23:13:58,511 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 23:13:58,511 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:13:58,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1906824968, now seen corresponding path program 6 times [2025-04-13 23:13:58,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:13:58,511 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110084725] [2025-04-13 23:13:58,511 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:13:58,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:13:58,518 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 3 equivalence classes. [2025-04-13 23:13:58,532 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:13:58,532 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 23:13:58,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:13:59,077 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:13:59,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:13:59,077 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110084725] [2025-04-13 23:13:59,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110084725] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:13:59,077 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885734832] [2025-04-13 23:13:59,077 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:13:59,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:13:59,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:13:59,079 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 23:13:59,080 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 23:13:59,122 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 3 equivalence classes. [2025-04-13 23:13:59,141 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:13:59,141 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 23:13:59,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:13:59,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-04-13 23:13:59,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:13:59,688 INFO L325 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2025-04-13 23:13:59,689 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 13 [2025-04-13 23:13:59,733 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:13:59,734 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:14:00,100 INFO L325 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2025-04-13 23:14:00,100 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 62 treesize of output 56 [2025-04-13 23:14:00,429 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:14:00,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885734832] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:14:00,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:14:00,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 45 [2025-04-13 23:14:00,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415182323] [2025-04-13 23:14:00,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:14:00,430 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-04-13 23:14:00,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:14:00,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-04-13 23:14:00,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1944, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 23:14:00,431 INFO L87 Difference]: Start difference. First operand 597 states and 1615 transitions. Second operand has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 23:14:05,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:14:05,497 INFO L93 Difference]: Finished difference Result 1755 states and 4686 transitions. [2025-04-13 23:14:05,497 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2025-04-13 23:14:05,498 INFO L79 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 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 23:14:05,498 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:14:05,502 INFO L225 Difference]: With dead ends: 1755 [2025-04-13 23:14:05,502 INFO L226 Difference]: Without dead ends: 1390 [2025-04-13 23:14:05,505 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2909 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1663, Invalid=10769, Unknown=0, NotChecked=0, Total=12432 [2025-04-13 23:14:05,505 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 510 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3272 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 3272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-04-13 23:14:05,505 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 0 Invalid, 3550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 3272 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-04-13 23:14:05,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2025-04-13 23:14:05,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 663. [2025-04-13 23:14:05,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 662 states have (on average 2.7401812688821754) internal successors, (1814), 662 states have internal predecessors, (1814), 0 states have call successors, (0), 0 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 23:14:05,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1814 transitions. [2025-04-13 23:14:05,579 INFO L79 Accepts]: Start accepts. Automaton has 663 states and 1814 transitions. Word has length 26 [2025-04-13 23:14:05,579 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:14:05,579 INFO L485 AbstractCegarLoop]: Abstraction has 663 states and 1814 transitions. [2025-04-13 23:14:05,579 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 23:14:05,579 INFO L278 IsEmpty]: Start isEmpty. Operand 663 states and 1814 transitions. [2025-04-13 23:14:05,580 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 23:14:05,580 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:14:05,580 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:14:05,587 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 23:14:05,785 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,SelfDestructingSolverStorable17 [2025-04-13 23:14:05,785 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 23:14:05,785 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:14:05,785 INFO L85 PathProgramCache]: Analyzing trace with hash -388920004, now seen corresponding path program 7 times [2025-04-13 23:14:05,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:14:05,785 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290940856] [2025-04-13 23:14:05,785 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:14:05,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:14:05,789 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-13 23:14:05,794 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:14:05,794 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:14:05,794 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:14:06,383 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:14:06,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:14:06,384 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290940856] [2025-04-13 23:14:06,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290940856] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:14:06,384 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907404301] [2025-04-13 23:14:06,384 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:14:06,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:14:06,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:14:06,386 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 23:14:06,387 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 23:14:06,427 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-13 23:14:06,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:14:06,443 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:14:06,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:14:06,444 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-04-13 23:14:06,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:14:06,888 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:14:06,889 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 7 [2025-04-13 23:14:06,958 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:14:06,958 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:14:07,242 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:14:07,242 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 51 treesize of output 53 [2025-04-13 23:14:07,458 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:14:07,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907404301] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:14:07,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:14:07,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 45 [2025-04-13 23:14:07,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73938205] [2025-04-13 23:14:07,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:14:07,458 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-04-13 23:14:07,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:14:07,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-04-13 23:14:07,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1920, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 23:14:07,459 INFO L87 Difference]: Start difference. First operand 663 states and 1814 transitions. Second operand has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 23:14:11,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:14:11,457 INFO L93 Difference]: Finished difference Result 1146 states and 2877 transitions. [2025-04-13 23:14:11,457 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2025-04-13 23:14:11,458 INFO L79 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 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 23:14:11,458 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:14:11,462 INFO L225 Difference]: With dead ends: 1146 [2025-04-13 23:14:11,462 INFO L226 Difference]: Without dead ends: 1119 [2025-04-13 23:14:11,463 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2777 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1314, Invalid=9606, Unknown=0, NotChecked=0, Total=10920 [2025-04-13 23:14:11,464 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 308 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3434 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 3434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-04-13 23:14:11,464 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 0 Invalid, 3596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 3434 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-04-13 23:14:11,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2025-04-13 23:14:11,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 675. [2025-04-13 23:14:11,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 674 states have (on average 2.744807121661721) internal successors, (1850), 674 states have internal predecessors, (1850), 0 states have call successors, (0), 0 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 23:14:11,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1850 transitions. [2025-04-13 23:14:11,547 INFO L79 Accepts]: Start accepts. Automaton has 675 states and 1850 transitions. Word has length 26 [2025-04-13 23:14:11,548 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:14:11,548 INFO L485 AbstractCegarLoop]: Abstraction has 675 states and 1850 transitions. [2025-04-13 23:14:11,548 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 23:14:11,548 INFO L278 IsEmpty]: Start isEmpty. Operand 675 states and 1850 transitions. [2025-04-13 23:14:11,549 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 23:14:11,549 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:14:11,549 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:14:11,555 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 23:14:11,753 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:14:11,753 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 23:14:11,754 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:14:11,754 INFO L85 PathProgramCache]: Analyzing trace with hash 148935574, now seen corresponding path program 8 times [2025-04-13 23:14:11,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:14:11,754 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671908846] [2025-04-13 23:14:11,754 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:14:11,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:14:11,759 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-04-13 23:14:11,769 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:14:11,769 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:14:11,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:14:12,248 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:14:12,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:14:12,248 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671908846] [2025-04-13 23:14:12,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671908846] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:14:12,248 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48804217] [2025-04-13 23:14:12,248 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:14:12,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:14:12,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:14:12,250 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 23:14:12,251 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 23:14:12,290 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-04-13 23:14:12,306 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:14:12,306 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:14:12,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:14:12,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-04-13 23:14:12,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:14:12,762 INFO L325 Elim1Store]: treesize reduction 18, result has 60.0 percent of original size [2025-04-13 23:14:12,763 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 46 treesize of output 39 [2025-04-13 23:14:12,957 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:14:12,957 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:14:13,295 INFO L325 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2025-04-13 23:14:13,296 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 50 treesize of output 53 [2025-04-13 23:14:13,634 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:14:13,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48804217] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:14:13,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:14:13,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 45 [2025-04-13 23:14:13,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662750058] [2025-04-13 23:14:13,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:14:13,634 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-04-13 23:14:13,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:14:13,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-04-13 23:14:13,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=1919, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 23:14:13,635 INFO L87 Difference]: Start difference. First operand 675 states and 1850 transitions. Second operand has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 23:14:25,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:14:25,690 INFO L93 Difference]: Finished difference Result 1848 states and 4523 transitions. [2025-04-13 23:14:25,690 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2025-04-13 23:14:25,690 INFO L79 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 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 23:14:25,690 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:14:25,703 INFO L225 Difference]: With dead ends: 1848 [2025-04-13 23:14:25,704 INFO L226 Difference]: Without dead ends: 1811 [2025-04-13 23:14:25,705 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11162 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=4174, Invalid=29132, Unknown=0, NotChecked=0, Total=33306 [2025-04-13 23:14:25,706 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 699 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4831 mSolverCounterSat, 669 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 669 IncrementalHoareTripleChecker+Valid, 4831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-04-13 23:14:25,706 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 0 Invalid, 5500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [669 Valid, 4831 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-04-13 23:14:25,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2025-04-13 23:14:25,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 753. [2025-04-13 23:14:25,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 752 states have (on average 2.831117021276596) internal successors, (2129), 752 states have internal predecessors, (2129), 0 states have call successors, (0), 0 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 23:14:25,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 2129 transitions. [2025-04-13 23:14:25,805 INFO L79 Accepts]: Start accepts. Automaton has 753 states and 2129 transitions. Word has length 26 [2025-04-13 23:14:25,805 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:14:25,805 INFO L485 AbstractCegarLoop]: Abstraction has 753 states and 2129 transitions. [2025-04-13 23:14:25,805 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 23:14:25,805 INFO L278 IsEmpty]: Start isEmpty. Operand 753 states and 2129 transitions. [2025-04-13 23:14:25,806 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 23:14:25,806 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:14:25,806 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:14:25,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-04-13 23:14:26,007 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:14:26,007 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 23:14:26,007 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:14:26,007 INFO L85 PathProgramCache]: Analyzing trace with hash 787706270, now seen corresponding path program 9 times [2025-04-13 23:14:26,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:14:26,007 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708359165] [2025-04-13 23:14:26,007 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:14:26,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:14:26,014 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 3 equivalence classes. [2025-04-13 23:14:26,019 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 25 of 26 statements. [2025-04-13 23:14:26,020 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 23:14:26,020 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:14:26,277 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 23:14:26,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:14:26,277 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708359165] [2025-04-13 23:14:26,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708359165] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:14:26,277 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026807472] [2025-04-13 23:14:26,277 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:14:26,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:14:26,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:14:26,279 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 23:14:26,280 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 23:14:26,320 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 3 equivalence classes. [2025-04-13 23:14:26,335 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 25 of 26 statements. [2025-04-13 23:14:26,335 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 23:14:26,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:14:26,336 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-04-13 23:14:26,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:14:26,521 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 23:14:26,522 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:14:26,697 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:14:26,698 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 62 treesize of output 56 [2025-04-13 23:14:26,733 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 23:14:26,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026807472] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:14:26,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:14:26,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 28 [2025-04-13 23:14:26,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102137451] [2025-04-13 23:14:26,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:14:26,733 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-04-13 23:14:26,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:14:26,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-04-13 23:14:26,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2025-04-13 23:14:26,734 INFO L87 Difference]: Start difference. First operand 753 states and 2129 transitions. Second operand has 30 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 29 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 23:14:27,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:14:27,709 INFO L93 Difference]: Finished difference Result 1005 states and 2671 transitions. [2025-04-13 23:14:27,709 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-04-13 23:14:27,709 INFO L79 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 29 states have internal predecessors, (60), 0 states have call successors, (0), 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 23:14:27,709 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:14:27,713 INFO L225 Difference]: With dead ends: 1005 [2025-04-13 23:14:27,713 INFO L226 Difference]: Without dead ends: 971 [2025-04-13 23:14:27,713 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=227, Invalid=2125, Unknown=0, NotChecked=0, Total=2352 [2025-04-13 23:14:27,713 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 146 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 23:14:27,714 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 0 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 23:14:27,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2025-04-13 23:14:27,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 769. [2025-04-13 23:14:27,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 768 states have (on average 2.8346354166666665) internal successors, (2177), 768 states have internal predecessors, (2177), 0 states have call successors, (0), 0 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 23:14:27,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 2177 transitions. [2025-04-13 23:14:27,812 INFO L79 Accepts]: Start accepts. Automaton has 769 states and 2177 transitions. Word has length 26 [2025-04-13 23:14:27,813 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:14:27,813 INFO L485 AbstractCegarLoop]: Abstraction has 769 states and 2177 transitions. [2025-04-13 23:14:27,813 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 29 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 23:14:27,813 INFO L278 IsEmpty]: Start isEmpty. Operand 769 states and 2177 transitions. [2025-04-13 23:14:27,814 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 23:14:27,814 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:14:27,814 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:14:27,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-04-13 23:14:28,014 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:14:28,015 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 23:14:28,015 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:14:28,015 INFO L85 PathProgramCache]: Analyzing trace with hash 216251464, now seen corresponding path program 10 times [2025-04-13 23:14:28,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:14:28,015 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285821411] [2025-04-13 23:14:28,015 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:14:28,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:14:28,019 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-04-13 23:14:28,026 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:14:28,026 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:14:28,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:14:28,492 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:14:28,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:14:28,492 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285821411] [2025-04-13 23:14:28,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285821411] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:14:28,492 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584948442] [2025-04-13 23:14:28,492 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:14:28,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:14:28,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:14:28,494 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 23:14:28,495 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 23:14:28,537 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-04-13 23:14:28,553 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:14:28,553 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:14:28,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:14:28,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-04-13 23:14:28,555 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:14:28,958 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:14:28,958 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 7 [2025-04-13 23:14:29,058 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:14:29,058 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:14:29,342 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:14:29,342 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 51 treesize of output 53 [2025-04-13 23:14:29,550 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:14:29,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584948442] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:14:29,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:14:29,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 44 [2025-04-13 23:14:29,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406207227] [2025-04-13 23:14:29,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:14:29,551 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-04-13 23:14:29,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:14:29,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-04-13 23:14:29,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=1782, Unknown=0, NotChecked=0, Total=2070 [2025-04-13 23:14:29,552 INFO L87 Difference]: Start difference. First operand 769 states and 2177 transitions. Second operand has 46 states, 45 states have (on average 1.6) internal successors, (72), 45 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:14:40,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:14:40,268 INFO L93 Difference]: Finished difference Result 2135 states and 5451 transitions. [2025-04-13 23:14:40,269 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2025-04-13 23:14:40,269 INFO L79 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.6) internal successors, (72), 45 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-04-13 23:14:40,269 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:14:40,275 INFO L225 Difference]: With dead ends: 2135 [2025-04-13 23:14:40,275 INFO L226 Difference]: Without dead ends: 1992 [2025-04-13 23:14:40,277 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11390 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=4140, Invalid=27366, Unknown=0, NotChecked=0, Total=31506 [2025-04-13 23:14:40,278 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 576 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4819 mSolverCounterSat, 719 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 719 IncrementalHoareTripleChecker+Valid, 4819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-04-13 23:14:40,278 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 0 Invalid, 5538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [719 Valid, 4819 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-04-13 23:14:40,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2025-04-13 23:14:40,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 951. [2025-04-13 23:14:40,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 950 states have (on average 2.889473684210526) internal successors, (2745), 950 states have internal predecessors, (2745), 0 states have call successors, (0), 0 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 23:14:40,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 2745 transitions. [2025-04-13 23:14:40,425 INFO L79 Accepts]: Start accepts. Automaton has 951 states and 2745 transitions. Word has length 26 [2025-04-13 23:14:40,426 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:14:40,426 INFO L485 AbstractCegarLoop]: Abstraction has 951 states and 2745 transitions. [2025-04-13 23:14:40,426 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.6) internal successors, (72), 45 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:14:40,426 INFO L278 IsEmpty]: Start isEmpty. Operand 951 states and 2745 transitions. [2025-04-13 23:14:40,427 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 23:14:40,427 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:14:40,427 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:14:40,433 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 23:14:40,632 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2025-04-13 23:14:40,632 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 23:14:40,632 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:14:40,632 INFO L85 PathProgramCache]: Analyzing trace with hash -555110418, now seen corresponding path program 11 times [2025-04-13 23:14:40,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:14:40,632 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806030799] [2025-04-13 23:14:40,632 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:14:40,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:14:40,636 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 3 equivalence classes. [2025-04-13 23:14:40,643 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:14:40,643 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 23:14:40,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:14:41,072 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:14:41,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:14:41,072 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806030799] [2025-04-13 23:14:41,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806030799] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:14:41,072 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360874082] [2025-04-13 23:14:41,072 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:14:41,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:14:41,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:14:41,074 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 23:14:41,075 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 23:14:41,117 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 3 equivalence classes. [2025-04-13 23:14:41,132 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:14:41,132 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 23:14:41,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:14:41,133 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-04-13 23:14:41,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:14:41,431 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 23:14:41,431 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:14:41,672 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:14:41,672 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 63 treesize of output 56 [2025-04-13 23:14:41,728 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 23:14:41,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360874082] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:14:41,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:14:41,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 10] total 35 [2025-04-13 23:14:41,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853785421] [2025-04-13 23:14:41,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:14:41,729 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-04-13 23:14:41,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:14:41,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-04-13 23:14:41,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1229, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 23:14:41,729 INFO L87 Difference]: Start difference. First operand 951 states and 2745 transitions. Second operand has 37 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 36 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 23:14:43,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:14:43,146 INFO L93 Difference]: Finished difference Result 1109 states and 3104 transitions. [2025-04-13 23:14:43,146 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-04-13 23:14:43,147 INFO L79 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 36 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 26 [2025-04-13 23:14:43,147 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:14:43,150 INFO L225 Difference]: With dead ends: 1109 [2025-04-13 23:14:43,151 INFO L226 Difference]: Without dead ends: 1009 [2025-04-13 23:14:43,151 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=268, Invalid=3514, Unknown=0, NotChecked=0, Total=3782 [2025-04-13 23:14:43,151 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 145 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1795 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 23:14:43,152 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 0 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1795 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 23:14:43,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2025-04-13 23:14:43,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 979. [2025-04-13 23:14:43,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 978 states have (on average 2.8783231083844583) internal successors, (2815), 978 states have internal predecessors, (2815), 0 states have call successors, (0), 0 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 23:14:43,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 2815 transitions. [2025-04-13 23:14:43,297 INFO L79 Accepts]: Start accepts. Automaton has 979 states and 2815 transitions. Word has length 26 [2025-04-13 23:14:43,297 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:14:43,298 INFO L485 AbstractCegarLoop]: Abstraction has 979 states and 2815 transitions. [2025-04-13 23:14:43,298 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 36 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 23:14:43,298 INFO L278 IsEmpty]: Start isEmpty. Operand 979 states and 2815 transitions. [2025-04-13 23:14:43,299 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 23:14:43,299 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:14:43,299 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:14:43,306 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 23:14:43,500 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:14:43,500 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 23:14:43,500 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:14:43,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1725458654, now seen corresponding path program 12 times [2025-04-13 23:14:43,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:14:43,501 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143530289] [2025-04-13 23:14:43,501 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:14:43,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:14:43,509 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 3 equivalence classes. [2025-04-13 23:14:43,523 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:14:43,523 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 23:14:43,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:14:44,009 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:14:44,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:14:44,009 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143530289] [2025-04-13 23:14:44,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143530289] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:14:44,009 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904676662] [2025-04-13 23:14:44,009 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:14:44,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:14:44,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:14:44,011 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 23:14:44,012 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 23:14:44,052 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 3 equivalence classes. [2025-04-13 23:14:44,076 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:14:44,076 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 23:14:44,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:14:44,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-04-13 23:14:44,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:14:44,583 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-13 23:14:44,584 INFO L172 IndexEqualityManager]: detected equality via solver [2025-04-13 23:14:44,585 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:14:44,585 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 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 23:14:44,631 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:14:44,631 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:14:44,928 INFO L325 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2025-04-13 23:14:44,928 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 50 treesize of output 45 [2025-04-13 23:14:45,238 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:14:45,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904676662] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:14:45,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:14:45,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 45 [2025-04-13 23:14:45,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868421175] [2025-04-13 23:14:45,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:14:45,239 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-04-13 23:14:45,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:14:45,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-04-13 23:14:45,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1880, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 23:14:45,240 INFO L87 Difference]: Start difference. First operand 979 states and 2815 transitions. Second operand has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 23:14:48,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:14:48,352 INFO L93 Difference]: Finished difference Result 1695 states and 4444 transitions. [2025-04-13 23:14:48,352 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2025-04-13 23:14:48,353 INFO L79 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 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 23:14:48,353 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:14:48,358 INFO L225 Difference]: With dead ends: 1695 [2025-04-13 23:14:48,358 INFO L226 Difference]: Without dead ends: 1616 [2025-04-13 23:14:48,359 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1673 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1073, Invalid=6067, Unknown=0, NotChecked=0, Total=7140 [2025-04-13 23:14:48,359 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 315 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2660 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 2660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:14:48,359 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 0 Invalid, 2829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 2660 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-04-13 23:14:48,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2025-04-13 23:14:48,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1029. [2025-04-13 23:14:48,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1028 states have (on average 2.88715953307393) internal successors, (2968), 1028 states have internal predecessors, (2968), 0 states have call successors, (0), 0 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 23:14:48,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 2968 transitions. [2025-04-13 23:14:48,526 INFO L79 Accepts]: Start accepts. Automaton has 1029 states and 2968 transitions. Word has length 26 [2025-04-13 23:14:48,527 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:14:48,527 INFO L485 AbstractCegarLoop]: Abstraction has 1029 states and 2968 transitions. [2025-04-13 23:14:48,527 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 23:14:48,527 INFO L278 IsEmpty]: Start isEmpty. Operand 1029 states and 2968 transitions. [2025-04-13 23:14:48,528 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 23:14:48,528 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:14:48,528 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:14:48,534 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 23:14:48,728 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:14:48,729 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 23:14:48,729 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:14:48,729 INFO L85 PathProgramCache]: Analyzing trace with hash -570286318, now seen corresponding path program 13 times [2025-04-13 23:14:48,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:14:48,729 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670624183] [2025-04-13 23:14:48,729 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:14:48,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:14:48,734 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-13 23:14:48,739 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:14:48,739 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:14:48,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:14:49,216 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:14:49,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:14:49,217 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670624183] [2025-04-13 23:14:49,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670624183] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:14:49,217 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073764896] [2025-04-13 23:14:49,217 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:14:49,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:14:49,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:14:49,219 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 23:14:49,219 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 23:14:49,259 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-13 23:14:49,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:14:49,272 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:14:49,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:14:49,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-04-13 23:14:49,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:14:49,716 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:14:49,716 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 7 [2025-04-13 23:14:49,796 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:14:49,796 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:14:50,129 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:14:50,129 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 51 treesize of output 53 [2025-04-13 23:14:50,377 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:14:50,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073764896] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:14:50,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:14:50,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 45 [2025-04-13 23:14:50,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678236166] [2025-04-13 23:14:50,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:14:50,378 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-04-13 23:14:50,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:14:50,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-04-13 23:14:50,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=1911, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 23:14:50,379 INFO L87 Difference]: Start difference. First operand 1029 states and 2968 transitions. Second operand has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 23:14:54,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:14:54,141 INFO L93 Difference]: Finished difference Result 1453 states and 3944 transitions. [2025-04-13 23:14:54,141 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2025-04-13 23:14:54,142 INFO L79 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 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 23:14:54,142 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:14:54,146 INFO L225 Difference]: With dead ends: 1453 [2025-04-13 23:14:54,146 INFO L226 Difference]: Without dead ends: 1399 [2025-04-13 23:14:54,147 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2482 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1251, Invalid=8849, Unknown=0, NotChecked=0, Total=10100 [2025-04-13 23:14:54,147 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 251 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2624 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 2624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-04-13 23:14:54,147 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 0 Invalid, 2788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 2624 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-04-13 23:14:54,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1399 states. [2025-04-13 23:14:54,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 1041. [2025-04-13 23:14:54,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 1040 states have (on average 2.8846153846153846) internal successors, (3000), 1040 states have internal predecessors, (3000), 0 states have call successors, (0), 0 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 23:14:54,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 3000 transitions. [2025-04-13 23:14:54,314 INFO L79 Accepts]: Start accepts. Automaton has 1041 states and 3000 transitions. Word has length 26 [2025-04-13 23:14:54,314 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:14:54,314 INFO L485 AbstractCegarLoop]: Abstraction has 1041 states and 3000 transitions. [2025-04-13 23:14:54,314 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 23:14:54,314 INFO L278 IsEmpty]: Start isEmpty. Operand 1041 states and 3000 transitions. [2025-04-13 23:14:54,315 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 23:14:54,315 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:14:54,315 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:14:54,321 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 23:14:54,519 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:14:54,519 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 23:14:54,519 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:14:54,519 INFO L85 PathProgramCache]: Analyzing trace with hash 34885150, now seen corresponding path program 14 times [2025-04-13 23:14:54,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:14:54,519 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727877634] [2025-04-13 23:14:54,519 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:14:54,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:14:54,523 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-04-13 23:14:54,528 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:14:54,528 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:14:54,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:14:54,905 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:14:54,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:14:54,905 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727877634] [2025-04-13 23:14:54,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727877634] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:14:54,905 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705995135] [2025-04-13 23:14:54,905 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:14:54,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:14:54,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:14:54,907 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 23:14:54,908 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 23:14:54,948 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-04-13 23:14:54,962 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:14:54,962 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:14:54,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:14:54,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-04-13 23:14:54,963 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:14:55,346 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:14:55,347 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 7 [2025-04-13 23:14:55,447 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:14:55,448 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:14:55,742 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:14:55,742 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 51 treesize of output 53 [2025-04-13 23:14:56,003 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:14:56,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705995135] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:14:56,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:14:56,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 45 [2025-04-13 23:14:56,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120830560] [2025-04-13 23:14:56,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:14:56,004 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-04-13 23:14:56,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:14:56,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-04-13 23:14:56,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1893, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 23:14:56,005 INFO L87 Difference]: Start difference. First operand 1041 states and 3000 transitions. Second operand has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 23:15:02,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:15:02,665 INFO L93 Difference]: Finished difference Result 2001 states and 5126 transitions. [2025-04-13 23:15:02,665 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2025-04-13 23:15:02,665 INFO L79 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 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 23:15:02,665 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:15:02,673 INFO L225 Difference]: With dead ends: 2001 [2025-04-13 23:15:02,673 INFO L226 Difference]: Without dead ends: 1918 [2025-04-13 23:15:02,674 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4809 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2514, Invalid=14778, Unknown=0, NotChecked=0, Total=17292 [2025-04-13 23:15:02,674 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 387 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3612 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 3612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-04-13 23:15:02,674 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 0 Invalid, 3924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 3612 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-04-13 23:15:02,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2025-04-13 23:15:02,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1073. [2025-04-13 23:15:02,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 1072 states have (on average 2.888059701492537) internal successors, (3096), 1072 states have internal predecessors, (3096), 0 states have call successors, (0), 0 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 23:15:02,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 3096 transitions. [2025-04-13 23:15:02,883 INFO L79 Accepts]: Start accepts. Automaton has 1073 states and 3096 transitions. Word has length 26 [2025-04-13 23:15:02,883 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:15:02,883 INFO L485 AbstractCegarLoop]: Abstraction has 1073 states and 3096 transitions. [2025-04-13 23:15:02,883 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 23:15:02,883 INFO L278 IsEmpty]: Start isEmpty. Operand 1073 states and 3096 transitions. [2025-04-13 23:15:02,884 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 23:15:02,884 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:15:02,884 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:15:02,890 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 23:15:03,085 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,SelfDestructingSolverStorable25 [2025-04-13 23:15:03,085 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 23:15:03,085 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:15:03,085 INFO L85 PathProgramCache]: Analyzing trace with hash -538733668, now seen corresponding path program 15 times [2025-04-13 23:15:03,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:15:03,086 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507939469] [2025-04-13 23:15:03,086 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:15:03,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:15:03,090 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 3 equivalence classes. [2025-04-13 23:15:03,097 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 25 of 26 statements. [2025-04-13 23:15:03,097 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 23:15:03,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:15:03,257 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 23:15:03,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:15:03,257 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507939469] [2025-04-13 23:15:03,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507939469] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:15:03,257 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20990998] [2025-04-13 23:15:03,257 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:15:03,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:15:03,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:15:03,259 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 23:15:03,260 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 23:15:03,301 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 3 equivalence classes. [2025-04-13 23:15:03,316 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 25 of 26 statements. [2025-04-13 23:15:03,316 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 23:15:03,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:15:03,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 23:15:03,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:15:03,507 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 23:15:03,507 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:15:03,678 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:15:03,679 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 51 treesize of output 53 [2025-04-13 23:15:03,711 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 23:15:03,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20990998] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:15:03,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:15:03,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2025-04-13 23:15:03,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176323495] [2025-04-13 23:15:03,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:15:03,711 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-04-13 23:15:03,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:15:03,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-04-13 23:15:03,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2025-04-13 23:15:03,712 INFO L87 Difference]: Start difference. First operand 1073 states and 3096 transitions. Second operand has 28 states, 27 states have (on average 2.185185185185185) internal successors, (59), 27 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:15:04,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:15:04,481 INFO L93 Difference]: Finished difference Result 1190 states and 3353 transitions. [2025-04-13 23:15:04,481 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-13 23:15:04,481 INFO L79 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.185185185185185) internal successors, (59), 27 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-04-13 23:15:04,481 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:15:04,484 INFO L225 Difference]: With dead ends: 1190 [2025-04-13 23:15:04,484 INFO L226 Difference]: Without dead ends: 1125 [2025-04-13 23:15:04,485 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2025-04-13 23:15:04,485 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 60 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 23:15:04,485 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 0 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 23:15:04,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2025-04-13 23:15:04,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1087. [2025-04-13 23:15:04,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.8756906077348066) internal successors, (3123), 1086 states have internal predecessors, (3123), 0 states have call successors, (0), 0 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 23:15:04,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 3123 transitions. [2025-04-13 23:15:04,664 INFO L79 Accepts]: Start accepts. Automaton has 1087 states and 3123 transitions. Word has length 26 [2025-04-13 23:15:04,664 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:15:04,664 INFO L485 AbstractCegarLoop]: Abstraction has 1087 states and 3123 transitions. [2025-04-13 23:15:04,664 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.185185185185185) internal successors, (59), 27 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:15:04,664 INFO L278 IsEmpty]: Start isEmpty. Operand 1087 states and 3123 transitions. [2025-04-13 23:15:04,665 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 23:15:04,665 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:15:04,666 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:15:04,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-04-13 23:15:04,866 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,SelfDestructingSolverStorable26 [2025-04-13 23:15:04,866 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 23:15:04,866 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:15:04,867 INFO L85 PathProgramCache]: Analyzing trace with hash 2065660124, now seen corresponding path program 16 times [2025-04-13 23:15:04,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:15:04,867 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120878553] [2025-04-13 23:15:04,867 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:15:04,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:15:04,870 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-04-13 23:15:04,875 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:15:04,875 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:15:04,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:15:05,260 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:15:05,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:15:05,261 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120878553] [2025-04-13 23:15:05,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120878553] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:15:05,261 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265849933] [2025-04-13 23:15:05,261 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:15:05,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:15:05,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:15:05,262 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 23:15:05,263 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 23:15:05,306 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-04-13 23:15:05,321 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:15:05,321 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:15:05,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:15:05,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-04-13 23:15:05,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:15:05,729 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:15:05,729 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 7 [2025-04-13 23:15:05,827 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:15:05,827 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:15:06,111 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:15:06,111 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 51 treesize of output 53 [2025-04-13 23:15:06,336 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:15:06,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265849933] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:15:06,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:15:06,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 44 [2025-04-13 23:15:06,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513442442] [2025-04-13 23:15:06,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:15:06,336 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-04-13 23:15:06,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:15:06,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-04-13 23:15:06,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=1781, Unknown=0, NotChecked=0, Total=2070 [2025-04-13 23:15:06,337 INFO L87 Difference]: Start difference. First operand 1087 states and 3123 transitions. Second operand has 46 states, 45 states have (on average 1.6) internal successors, (72), 45 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:15:12,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:15:12,987 INFO L93 Difference]: Finished difference Result 2585 states and 6707 transitions. [2025-04-13 23:15:12,987 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2025-04-13 23:15:12,988 INFO L79 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.6) internal successors, (72), 45 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-04-13 23:15:12,988 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:15:12,992 INFO L225 Difference]: With dead ends: 2585 [2025-04-13 23:15:12,993 INFO L226 Difference]: Without dead ends: 2474 [2025-04-13 23:15:12,993 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4978 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=2366, Invalid=13134, Unknown=0, NotChecked=0, Total=15500 [2025-04-13 23:15:12,994 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 552 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3127 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 3127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-04-13 23:15:12,994 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 0 Invalid, 3619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 3127 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-04-13 23:15:12,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2025-04-13 23:15:13,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 1207. [2025-04-13 23:15:13,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 1206 states have (on average 2.888059701492537) internal successors, (3483), 1206 states have internal predecessors, (3483), 0 states have call successors, (0), 0 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 23:15:13,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 3483 transitions. [2025-04-13 23:15:13,210 INFO L79 Accepts]: Start accepts. Automaton has 1207 states and 3483 transitions. Word has length 26 [2025-04-13 23:15:13,210 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:15:13,210 INFO L485 AbstractCegarLoop]: Abstraction has 1207 states and 3483 transitions. [2025-04-13 23:15:13,210 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.6) internal successors, (72), 45 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:15:13,210 INFO L278 IsEmpty]: Start isEmpty. Operand 1207 states and 3483 transitions. [2025-04-13 23:15:13,211 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 23:15:13,211 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:15:13,211 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:15:13,217 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 23:15:13,412 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-04-13 23:15:13,412 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 23:15:13,412 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:15:13,412 INFO L85 PathProgramCache]: Analyzing trace with hash -899471400, now seen corresponding path program 17 times [2025-04-13 23:15:13,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:15:13,412 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079285444] [2025-04-13 23:15:13,412 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:15:13,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:15:13,416 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 3 equivalence classes. [2025-04-13 23:15:13,424 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:15:13,424 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 23:15:13,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:15:13,947 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:15:13,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:15:13,947 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079285444] [2025-04-13 23:15:13,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079285444] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:15:13,947 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115410280] [2025-04-13 23:15:13,947 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:15:13,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:15:13,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:15:13,949 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 23:15:13,949 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 23:15:13,992 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 3 equivalence classes. [2025-04-13 23:15:14,007 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:15:14,007 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 23:15:14,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:15:14,008 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-04-13 23:15:14,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:15:14,302 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 23:15:14,302 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:15:14,487 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:15:14,487 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 51 treesize of output 53 [2025-04-13 23:15:14,525 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 23:15:14,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115410280] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:15:14,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:15:14,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 10] total 35 [2025-04-13 23:15:14,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399916399] [2025-04-13 23:15:14,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:15:14,525 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-04-13 23:15:14,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:15:14,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-04-13 23:15:14,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1225, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 23:15:14,526 INFO L87 Difference]: Start difference. First operand 1207 states and 3483 transitions. Second operand has 37 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 36 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 23:15:15,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:15:15,734 INFO L93 Difference]: Finished difference Result 1313 states and 3708 transitions. [2025-04-13 23:15:15,734 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-04-13 23:15:15,734 INFO L79 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 36 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 26 [2025-04-13 23:15:15,734 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:15:15,737 INFO L225 Difference]: With dead ends: 1313 [2025-04-13 23:15:15,737 INFO L226 Difference]: Without dead ends: 1234 [2025-04-13 23:15:15,738 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=193, Invalid=2257, Unknown=0, NotChecked=0, Total=2450 [2025-04-13 23:15:15,738 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 87 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2102 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 23:15:15,738 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 0 Invalid, 2111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2102 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 23:15:15,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2025-04-13 23:15:15,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1215. [2025-04-13 23:15:15,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 1214 states have (on average 2.8838550247116967) internal successors, (3501), 1214 states have internal predecessors, (3501), 0 states have call successors, (0), 0 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 23:15:15,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 3501 transitions. [2025-04-13 23:15:15,943 INFO L79 Accepts]: Start accepts. Automaton has 1215 states and 3501 transitions. Word has length 26 [2025-04-13 23:15:15,943 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:15:15,943 INFO L485 AbstractCegarLoop]: Abstraction has 1215 states and 3501 transitions. [2025-04-13 23:15:15,943 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 36 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 23:15:15,943 INFO L278 IsEmpty]: Start isEmpty. Operand 1215 states and 3501 transitions. [2025-04-13 23:15:15,944 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 23:15:15,944 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:15:15,944 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:15:15,950 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 23:15:16,145 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:15:16,145 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 23:15:16,145 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:15:16,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1381097672, now seen corresponding path program 18 times [2025-04-13 23:15:16,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:15:16,145 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904527591] [2025-04-13 23:15:16,145 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:15:16,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:15:16,149 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 3 equivalence classes. [2025-04-13 23:15:16,160 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:15:16,160 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 23:15:16,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:15:16,545 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:15:16,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:15:16,545 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904527591] [2025-04-13 23:15:16,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904527591] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:15:16,545 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067473553] [2025-04-13 23:15:16,545 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:15:16,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:15:16,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:15:16,547 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 23:15:16,548 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 23:15:16,592 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 3 equivalence classes. [2025-04-13 23:15:16,608 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:15:16,608 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 23:15:16,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:15:16,609 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-04-13 23:15:16,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:15:17,131 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-13 23:15:17,131 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-13 23:15:17,132 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:15:17,133 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 10 [2025-04-13 23:15:17,151 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:15:17,152 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:15:17,655 INFO L325 Elim1Store]: treesize reduction 28, result has 61.6 percent of original size [2025-04-13 23:15:17,655 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 75 treesize of output 68 [2025-04-13 23:15:18,010 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:15:18,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067473553] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:15:18,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:15:18,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 44 [2025-04-13 23:15:18,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833643491] [2025-04-13 23:15:18,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:15:18,011 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-04-13 23:15:18,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:15:18,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-04-13 23:15:18,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=1764, Unknown=0, NotChecked=0, Total=2070 [2025-04-13 23:15:18,012 INFO L87 Difference]: Start difference. First operand 1215 states and 3501 transitions. Second operand has 46 states, 45 states have (on average 1.6444444444444444) internal successors, (74), 45 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 23:15:22,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:15:22,308 INFO L93 Difference]: Finished difference Result 1746 states and 4741 transitions. [2025-04-13 23:15:22,309 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2025-04-13 23:15:22,309 INFO L79 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.6444444444444444) internal successors, (74), 45 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 26 [2025-04-13 23:15:22,309 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:15:22,313 INFO L225 Difference]: With dead ends: 1746 [2025-04-13 23:15:22,313 INFO L226 Difference]: Without dead ends: 1667 [2025-04-13 23:15:22,313 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2083 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1201, Invalid=7729, Unknown=0, NotChecked=0, Total=8930 [2025-04-13 23:15:22,314 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 170 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2178 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:15:22,314 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 0 Invalid, 2244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2178 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-04-13 23:15:22,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2025-04-13 23:15:22,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1233. [2025-04-13 23:15:22,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 1232 states have (on average 2.883116883116883) internal successors, (3552), 1232 states have internal predecessors, (3552), 0 states have call successors, (0), 0 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 23:15:22,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 3552 transitions. [2025-04-13 23:15:22,536 INFO L79 Accepts]: Start accepts. Automaton has 1233 states and 3552 transitions. Word has length 26 [2025-04-13 23:15:22,537 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:15:22,537 INFO L485 AbstractCegarLoop]: Abstraction has 1233 states and 3552 transitions. [2025-04-13 23:15:22,537 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.6444444444444444) internal successors, (74), 45 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 23:15:22,537 INFO L278 IsEmpty]: Start isEmpty. Operand 1233 states and 3552 transitions. [2025-04-13 23:15:22,538 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 23:15:22,538 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:15:22,538 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:15:22,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-04-13 23:15:22,738 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:15:22,739 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 23:15:22,739 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:15:22,739 INFO L85 PathProgramCache]: Analyzing trace with hash -309475832, now seen corresponding path program 19 times [2025-04-13 23:15:22,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:15:22,739 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483884659] [2025-04-13 23:15:22,739 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:15:22,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:15:22,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-13 23:15:22,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:15:22,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:15:22,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:15:23,221 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:15:23,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:15:23,221 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483884659] [2025-04-13 23:15:23,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483884659] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:15:23,222 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049857089] [2025-04-13 23:15:23,222 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:15:23,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:15:23,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:15:23,223 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 23:15:23,224 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 23:15:23,267 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-13 23:15:23,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:15:23,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:15:23,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:15:23,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-04-13 23:15:23,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:15:23,672 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:15:23,672 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 7 [2025-04-13 23:15:23,776 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:15:23,776 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:15:24,066 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:15:24,066 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 51 treesize of output 53 [2025-04-13 23:15:24,272 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:15:24,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049857089] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:15:24,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:15:24,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 45 [2025-04-13 23:15:24,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200383053] [2025-04-13 23:15:24,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:15:24,273 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-04-13 23:15:24,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:15:24,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-04-13 23:15:24,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=1891, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 23:15:24,274 INFO L87 Difference]: Start difference. First operand 1233 states and 3552 transitions. Second operand has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 23:15:27,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:15:27,602 INFO L93 Difference]: Finished difference Result 1828 states and 4927 transitions. [2025-04-13 23:15:27,602 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2025-04-13 23:15:27,602 INFO L79 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 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 23:15:27,602 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:15:27,606 INFO L225 Difference]: With dead ends: 1828 [2025-04-13 23:15:27,606 INFO L226 Difference]: Without dead ends: 1775 [2025-04-13 23:15:27,607 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1898 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1022, Invalid=7350, Unknown=0, NotChecked=0, Total=8372 [2025-04-13 23:15:27,607 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 184 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2021 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 2021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 23:15:27,607 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 0 Invalid, 2163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 2021 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 23:15:27,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2025-04-13 23:15:27,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 1239. [2025-04-13 23:15:27,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 1238 states have (on average 2.881260096930533) internal successors, (3567), 1238 states have internal predecessors, (3567), 0 states have call successors, (0), 0 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 23:15:27,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 3567 transitions. [2025-04-13 23:15:27,828 INFO L79 Accepts]: Start accepts. Automaton has 1239 states and 3567 transitions. Word has length 26 [2025-04-13 23:15:27,828 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:15:27,828 INFO L485 AbstractCegarLoop]: Abstraction has 1239 states and 3567 transitions. [2025-04-13 23:15:27,828 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 23:15:27,828 INFO L278 IsEmpty]: Start isEmpty. Operand 1239 states and 3567 transitions. [2025-04-13 23:15:27,829 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 23:15:27,829 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:15:27,829 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:15:27,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-04-13 23:15:28,030 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,SelfDestructingSolverStorable30 [2025-04-13 23:15:28,030 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 23:15:28,030 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:15:28,030 INFO L85 PathProgramCache]: Analyzing trace with hash -883094650, now seen corresponding path program 20 times [2025-04-13 23:15:28,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:15:28,030 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934483641] [2025-04-13 23:15:28,030 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:15:28,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:15:28,035 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-04-13 23:15:28,044 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:15:28,044 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:15:28,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:15:28,441 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:15:28,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:15:28,441 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934483641] [2025-04-13 23:15:28,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934483641] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:15:28,441 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945058005] [2025-04-13 23:15:28,441 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:15:28,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:15:28,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:15:28,443 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 23:15:28,445 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 23:15:28,497 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-04-13 23:15:28,513 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:15:28,513 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:15:28,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:15:28,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 23:15:28,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:15:28,978 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-13 23:15:28,978 INFO L172 IndexEqualityManager]: detected equality via solver [2025-04-13 23:15:28,980 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:15:28,980 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 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 23:15:29,020 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:15:29,020 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:15:29,314 INFO L325 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2025-04-13 23:15:29,314 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 50 treesize of output 45 [2025-04-13 23:15:29,623 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:15:29,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945058005] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:15:29,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:15:29,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 45 [2025-04-13 23:15:29,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125893692] [2025-04-13 23:15:29,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:15:29,624 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-04-13 23:15:29,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:15:29,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-04-13 23:15:29,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=1884, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 23:15:29,624 INFO L87 Difference]: Start difference. First operand 1239 states and 3567 transitions. Second operand has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 23:15:33,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:15:33,676 INFO L93 Difference]: Finished difference Result 3231 states and 8794 transitions. [2025-04-13 23:15:33,677 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2025-04-13 23:15:33,677 INFO L79 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 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 23:15:33,677 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:15:33,683 INFO L225 Difference]: With dead ends: 3231 [2025-04-13 23:15:33,683 INFO L226 Difference]: Without dead ends: 2894 [2025-04-13 23:15:33,684 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2100 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1652, Invalid=7660, Unknown=0, NotChecked=0, Total=9312 [2025-04-13 23:15:33,684 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 404 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2279 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 2279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-04-13 23:15:33,684 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 0 Invalid, 2492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 2279 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-04-13 23:15:33,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2025-04-13 23:15:34,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1637. [2025-04-13 23:15:34,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1637 states, 1636 states have (on average 2.910757946210269) internal successors, (4762), 1636 states have internal predecessors, (4762), 0 states have call successors, (0), 0 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 23:15:34,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 4762 transitions. [2025-04-13 23:15:34,006 INFO L79 Accepts]: Start accepts. Automaton has 1637 states and 4762 transitions. Word has length 26 [2025-04-13 23:15:34,006 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:15:34,006 INFO L485 AbstractCegarLoop]: Abstraction has 1637 states and 4762 transitions. [2025-04-13 23:15:34,006 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 23:15:34,006 INFO L278 IsEmpty]: Start isEmpty. Operand 1637 states and 4762 transitions. [2025-04-13 23:15:34,008 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 23:15:34,008 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:15:34,008 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:15:34,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-04-13 23:15:34,208 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,SelfDestructingSolverStorable31 [2025-04-13 23:15:34,208 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 23:15:34,209 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:15:34,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1116127674, now seen corresponding path program 21 times [2025-04-13 23:15:34,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:15:34,209 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071807826] [2025-04-13 23:15:34,209 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:15:34,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:15:34,213 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 3 equivalence classes. [2025-04-13 23:15:34,218 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 25 of 26 statements. [2025-04-13 23:15:34,218 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 23:15:34,218 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:15:34,354 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 23:15:34,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:15:34,354 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071807826] [2025-04-13 23:15:34,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071807826] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:15:34,354 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373507058] [2025-04-13 23:15:34,354 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:15:34,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:15:34,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:15:34,356 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 23:15:34,357 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 23:15:34,401 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 3 equivalence classes. [2025-04-13 23:15:34,415 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 25 of 26 statements. [2025-04-13 23:15:34,415 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 23:15:34,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:15:34,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-04-13 23:15:34,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:15:34,574 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 23:15:34,574 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:15:34,750 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:15:34,750 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 63 treesize of output 56 [2025-04-13 23:15:34,779 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 23:15:34,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373507058] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:15:34,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:15:34,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2025-04-13 23:15:34,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544005490] [2025-04-13 23:15:34,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:15:34,780 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-04-13 23:15:34,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:15:34,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-04-13 23:15:34,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2025-04-13 23:15:34,780 INFO L87 Difference]: Start difference. First operand 1637 states and 4762 transitions. Second operand has 27 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 26 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 23:15:35,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:15:35,646 INFO L93 Difference]: Finished difference Result 1730 states and 4952 transitions. [2025-04-13 23:15:35,646 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-13 23:15:35,647 INFO L79 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 26 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 26 [2025-04-13 23:15:35,647 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:15:35,650 INFO L225 Difference]: With dead ends: 1730 [2025-04-13 23:15:35,650 INFO L226 Difference]: Without dead ends: 1661 [2025-04-13 23:15:35,651 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2025-04-13 23:15:35,651 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 71 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 23:15:35,651 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 0 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 23:15:35,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2025-04-13 23:15:35,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1641. [2025-04-13 23:15:35,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1641 states, 1640 states have (on average 2.90609756097561) internal successors, (4766), 1640 states have internal predecessors, (4766), 0 states have call successors, (0), 0 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 23:15:35,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 4766 transitions. [2025-04-13 23:15:35,964 INFO L79 Accepts]: Start accepts. Automaton has 1641 states and 4766 transitions. Word has length 26 [2025-04-13 23:15:35,964 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:15:35,964 INFO L485 AbstractCegarLoop]: Abstraction has 1641 states and 4766 transitions. [2025-04-13 23:15:35,964 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 26 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 23:15:35,964 INFO L278 IsEmpty]: Start isEmpty. Operand 1641 states and 4766 transitions. [2025-04-13 23:15:35,966 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 23:15:35,966 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:15:35,966 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:15:35,971 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 23:15:36,166 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:15:36,166 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 23:15:36,166 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:15:36,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1084297208, now seen corresponding path program 22 times [2025-04-13 23:15:36,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:15:36,167 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285280256] [2025-04-13 23:15:36,167 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:15:36,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:15:36,170 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-04-13 23:15:36,175 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:15:36,175 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:15:36,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:15:36,496 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:15:36,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:15:36,497 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285280256] [2025-04-13 23:15:36,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285280256] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:15:36,497 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919647165] [2025-04-13 23:15:36,497 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:15:36,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:15:36,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:15:36,498 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 23:15:36,499 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 23:15:36,545 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-04-13 23:15:36,558 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:15:36,558 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:15:36,558 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:15:36,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-04-13 23:15:36,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:15:37,007 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:15:37,007 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:15:37,251 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:15:37,251 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 51 treesize of output 53 [2025-04-13 23:15:37,451 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:15:37,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919647165] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:15:37,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:15:37,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 44 [2025-04-13 23:15:37,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792127502] [2025-04-13 23:15:37,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:15:37,452 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-04-13 23:15:37,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:15:37,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-04-13 23:15:37,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1804, Unknown=0, NotChecked=0, Total=2070 [2025-04-13 23:15:37,453 INFO L87 Difference]: Start difference. First operand 1641 states and 4766 transitions. Second operand has 46 states, 45 states have (on average 1.6444444444444444) internal successors, (74), 45 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 23:15:41,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:15:41,253 INFO L93 Difference]: Finished difference Result 3324 states and 9238 transitions. [2025-04-13 23:15:41,253 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2025-04-13 23:15:41,253 INFO L79 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.6444444444444444) internal successors, (74), 45 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 26 [2025-04-13 23:15:41,254 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:15:41,258 INFO L225 Difference]: With dead ends: 3324 [2025-04-13 23:15:41,258 INFO L226 Difference]: Without dead ends: 2940 [2025-04-13 23:15:41,259 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2022 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1527, Invalid=6845, Unknown=0, NotChecked=0, Total=8372 [2025-04-13 23:15:41,259 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 323 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3146 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 3146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:15:41,259 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 0 Invalid, 3263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 3146 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-04-13 23:15:41,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2025-04-13 23:15:41,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 1673. [2025-04-13 23:15:41,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1672 states have (on average 2.90311004784689) internal successors, (4854), 1672 states have internal predecessors, (4854), 0 states have call successors, (0), 0 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 23:15:41,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 4854 transitions. [2025-04-13 23:15:41,600 INFO L79 Accepts]: Start accepts. Automaton has 1673 states and 4854 transitions. Word has length 26 [2025-04-13 23:15:41,600 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:15:41,600 INFO L485 AbstractCegarLoop]: Abstraction has 1673 states and 4854 transitions. [2025-04-13 23:15:41,600 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.6444444444444444) internal successors, (74), 45 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 23:15:41,601 INFO L278 IsEmpty]: Start isEmpty. Operand 1673 states and 4854 transitions. [2025-04-13 23:15:41,602 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 23:15:41,602 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:15:41,602 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:15:41,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2025-04-13 23:15:41,803 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:15:41,803 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 23:15:41,803 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:15:41,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1452780694, now seen corresponding path program 23 times [2025-04-13 23:15:41,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:15:41,803 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375898947] [2025-04-13 23:15:41,803 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:15:41,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:15:41,807 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 3 equivalence classes. [2025-04-13 23:15:41,812 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:15:41,812 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 23:15:41,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:15:42,322 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:15:42,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:15:42,322 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375898947] [2025-04-13 23:15:42,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375898947] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:15:42,322 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916296234] [2025-04-13 23:15:42,322 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:15:42,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:15:42,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:15:42,324 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 23:15:42,325 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 23:15:42,377 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 3 equivalence classes. [2025-04-13 23:15:42,396 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:15:42,396 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 23:15:42,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:15:42,398 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-04-13 23:15:42,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:15:42,655 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:15:42,656 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:15:42,837 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:15:42,837 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 51 treesize of output 53 [2025-04-13 23:15:42,872 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 23:15:42,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916296234] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:15:42,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:15:42,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 10] total 34 [2025-04-13 23:15:42,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253416366] [2025-04-13 23:15:42,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:15:42,873 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-04-13 23:15:42,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:15:42,873 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-04-13 23:15:42,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1155, Unknown=0, NotChecked=0, Total=1260 [2025-04-13 23:15:42,873 INFO L87 Difference]: Start difference. First operand 1673 states and 4854 transitions. Second operand has 36 states, 35 states have (on average 1.9714285714285715) internal successors, (69), 35 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 23:15:44,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:15:44,193 INFO L93 Difference]: Finished difference Result 1760 states and 5035 transitions. [2025-04-13 23:15:44,193 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-04-13 23:15:44,193 INFO L79 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.9714285714285715) internal successors, (69), 35 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 26 [2025-04-13 23:15:44,193 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:15:44,196 INFO L225 Difference]: With dead ends: 1760 [2025-04-13 23:15:44,196 INFO L226 Difference]: Without dead ends: 1709 [2025-04-13 23:15:44,197 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=244, Invalid=2408, Unknown=0, NotChecked=0, Total=2652 [2025-04-13 23:15:44,197 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 122 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 23:15:44,197 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 0 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 23:15:44,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1709 states. [2025-04-13 23:15:44,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1709 to 1693. [2025-04-13 23:15:44,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1692 states have (on average 2.8983451536643026) internal successors, (4904), 1692 states have internal predecessors, (4904), 0 states have call successors, (0), 0 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 23:15:44,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 4904 transitions. [2025-04-13 23:15:44,531 INFO L79 Accepts]: Start accepts. Automaton has 1693 states and 4904 transitions. Word has length 26 [2025-04-13 23:15:44,531 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:15:44,531 INFO L485 AbstractCegarLoop]: Abstraction has 1693 states and 4904 transitions. [2025-04-13 23:15:44,531 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.9714285714285715) internal successors, (69), 35 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 23:15:44,531 INFO L278 IsEmpty]: Start isEmpty. Operand 1693 states and 4904 transitions. [2025-04-13 23:15:44,533 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 23:15:44,533 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:15:44,533 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:15:44,540 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 23:15:44,737 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:15:44,738 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 23:15:44,738 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:15:44,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1520096584, now seen corresponding path program 24 times [2025-04-13 23:15:44,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:15:44,738 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248219066] [2025-04-13 23:15:44,738 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:15:44,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:15:44,742 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 3 equivalence classes. [2025-04-13 23:15:44,749 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:15:44,749 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 23:15:44,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:15:45,149 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:15:45,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:15:45,150 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248219066] [2025-04-13 23:15:45,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248219066] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:15:45,150 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855147638] [2025-04-13 23:15:45,150 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:15:45,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:15:45,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:15:45,152 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 23:15:45,152 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 23:15:45,199 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 3 equivalence classes. [2025-04-13 23:15:45,213 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 23:15:45,214 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 23:15:45,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:15:45,214 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 23:15:45,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:15:45,587 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-13 23:15:45,589 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:15:45,589 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 18 [2025-04-13 23:15:45,725 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:15:45,725 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:15:46,032 INFO L325 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2025-04-13 23:15:46,032 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 61 treesize of output 56 [2025-04-13 23:15:46,323 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:15:46,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855147638] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:15:46,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:15:46,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 45 [2025-04-13 23:15:46,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96197088] [2025-04-13 23:15:46,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:15:46,323 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-04-13 23:15:46,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:15:46,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-04-13 23:15:46,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1906, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 23:15:46,324 INFO L87 Difference]: Start difference. First operand 1693 states and 4904 transitions. Second operand has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 23:15:49,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:15:49,069 INFO L93 Difference]: Finished difference Result 3079 states and 8638 transitions. [2025-04-13 23:15:49,069 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-04-13 23:15:49,069 INFO L79 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 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 23:15:49,069 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:15:49,073 INFO L225 Difference]: With dead ends: 3079 [2025-04-13 23:15:49,073 INFO L226 Difference]: Without dead ends: 1851 [2025-04-13 23:15:49,074 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1061 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=863, Invalid=4687, Unknown=0, NotChecked=0, Total=5550 [2025-04-13 23:15:49,074 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 291 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2075 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 23:15:49,075 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 0 Invalid, 2205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2075 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 23:15:49,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2025-04-13 23:15:49,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 1375. [2025-04-13 23:15:49,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1375 states, 1374 states have (on average 2.8100436681222707) internal successors, (3861), 1374 states have internal predecessors, (3861), 0 states have call successors, (0), 0 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 23:15:49,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 3861 transitions. [2025-04-13 23:15:49,363 INFO L79 Accepts]: Start accepts. Automaton has 1375 states and 3861 transitions. Word has length 26 [2025-04-13 23:15:49,363 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:15:49,363 INFO L485 AbstractCegarLoop]: Abstraction has 1375 states and 3861 transitions. [2025-04-13 23:15:49,363 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 23:15:49,363 INFO L278 IsEmpty]: Start isEmpty. Operand 1375 states and 3861 transitions. [2025-04-13 23:15:49,365 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 23:15:49,365 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:15:49,365 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:15:49,370 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 23:15:49,565 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,SelfDestructingSolverStorable35 [2025-04-13 23:15:49,565 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 23:15:49,565 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:15:49,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1203680070, now seen corresponding path program 25 times [2025-04-13 23:15:49,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:15:49,566 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838845983] [2025-04-13 23:15:49,566 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:15:49,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:15:49,570 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-04-13 23:15:49,578 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 23:15:49,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:15:49,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:15:51,695 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:15:51,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:15:51,696 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838845983] [2025-04-13 23:15:51,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838845983] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:15:51,696 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002975143] [2025-04-13 23:15:51,696 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:15:51,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:15:51,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:15:51,698 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 23:15:51,698 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 23:15:51,746 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-04-13 23:15:51,760 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 23:15:51,760 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:15:51,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:15:51,761 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-04-13 23:15:51,762 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:15:52,105 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:15:52,105 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:15:52,331 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:15:52,331 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 51 treesize of output 53 [2025-04-13 23:15:52,378 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 23:15:52,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002975143] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:15:52,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:15:52,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 10] total 38 [2025-04-13 23:15:52,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493474267] [2025-04-13 23:15:52,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:15:52,378 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-04-13 23:15:52,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:15:52,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-04-13 23:15:52,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1452, Unknown=0, NotChecked=0, Total=1560 [2025-04-13 23:15:52,379 INFO L87 Difference]: Start difference. First operand 1375 states and 3861 transitions. Second operand has 40 states, 39 states have (on average 1.8461538461538463) internal successors, (72), 39 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:15:54,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:15:54,908 INFO L93 Difference]: Finished difference Result 1599 states and 4335 transitions. [2025-04-13 23:15:54,908 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-04-13 23:15:54,908 INFO L79 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.8461538461538463) internal successors, (72), 39 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-04-13 23:15:54,908 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:15:54,911 INFO L225 Difference]: With dead ends: 1599 [2025-04-13 23:15:54,911 INFO L226 Difference]: Without dead ends: 1582 [2025-04-13 23:15:54,911 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=243, Invalid=3297, Unknown=0, NotChecked=0, Total=3540 [2025-04-13 23:15:54,912 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 133 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3936 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-04-13 23:15:54,912 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 0 Invalid, 3953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3936 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-04-13 23:15:54,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2025-04-13 23:15:55,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1375. [2025-04-13 23:15:55,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1375 states, 1374 states have (on average 2.8100436681222707) internal successors, (3861), 1374 states have internal predecessors, (3861), 0 states have call successors, (0), 0 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 23:15:55,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 3861 transitions. [2025-04-13 23:15:55,199 INFO L79 Accepts]: Start accepts. Automaton has 1375 states and 3861 transitions. Word has length 27 [2025-04-13 23:15:55,199 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:15:55,199 INFO L485 AbstractCegarLoop]: Abstraction has 1375 states and 3861 transitions. [2025-04-13 23:15:55,199 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 1.8461538461538463) internal successors, (72), 39 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:15:55,199 INFO L278 IsEmpty]: Start isEmpty. Operand 1375 states and 3861 transitions. [2025-04-13 23:15:55,201 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 23:15:55,201 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:15:55,201 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:15:55,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-04-13 23:15:55,401 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-04-13 23:15:55,402 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 23:15:55,402 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:15:55,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1379376672, now seen corresponding path program 26 times [2025-04-13 23:15:55,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:15:55,402 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404763278] [2025-04-13 23:15:55,402 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:15:55,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:15:55,407 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-04-13 23:15:55,416 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 23:15:55,416 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:15:55,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:15:56,042 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:15:56,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:15:56,043 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404763278] [2025-04-13 23:15:56,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404763278] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:15:56,043 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32312497] [2025-04-13 23:15:56,043 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:15:56,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:15:56,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:15:56,044 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 23:15:56,046 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 23:15:56,095 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-04-13 23:15:56,109 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 23:15:56,109 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:15:56,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:15:56,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-04-13 23:15:56,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:15:56,447 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 23:15:56,448 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:15:56,686 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:15:56,686 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 62 treesize of output 56 [2025-04-13 23:15:56,736 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 23:15:56,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32312497] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:15:56,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:15:56,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 10] total 38 [2025-04-13 23:15:56,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931204877] [2025-04-13 23:15:56,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:15:56,737 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-04-13 23:15:56,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:15:56,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-04-13 23:15:56,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1443, Unknown=0, NotChecked=0, Total=1560 [2025-04-13 23:15:56,738 INFO L87 Difference]: Start difference. First operand 1375 states and 3861 transitions. Second operand has 40 states, 39 states have (on average 1.8461538461538463) internal successors, (72), 39 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:15:58,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:15:58,310 INFO L93 Difference]: Finished difference Result 1566 states and 4263 transitions. [2025-04-13 23:15:58,310 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-04-13 23:15:58,310 INFO L79 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.8461538461538463) internal successors, (72), 39 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-04-13 23:15:58,310 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:15:58,313 INFO L225 Difference]: With dead ends: 1566 [2025-04-13 23:15:58,314 INFO L226 Difference]: Without dead ends: 1549 [2025-04-13 23:15:58,314 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=206, Invalid=2656, Unknown=0, NotChecked=0, Total=2862 [2025-04-13 23:15:58,314 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 126 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1925 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 23:15:58,314 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 0 Invalid, 1941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1925 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 23:15:58,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1549 states. [2025-04-13 23:15:58,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1549 to 1373. [2025-04-13 23:15:58,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 1372 states have (on average 2.8104956268221573) internal successors, (3856), 1372 states have internal predecessors, (3856), 0 states have call successors, (0), 0 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 23:15:58,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 3856 transitions. [2025-04-13 23:15:58,604 INFO L79 Accepts]: Start accepts. Automaton has 1373 states and 3856 transitions. Word has length 27 [2025-04-13 23:15:58,604 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:15:58,604 INFO L485 AbstractCegarLoop]: Abstraction has 1373 states and 3856 transitions. [2025-04-13 23:15:58,605 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 1.8461538461538463) internal successors, (72), 39 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:15:58,605 INFO L278 IsEmpty]: Start isEmpty. Operand 1373 states and 3856 transitions. [2025-04-13 23:15:58,606 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 23:15:58,606 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:15:58,606 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:15:58,612 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 23:15:58,806 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-04-13 23:15:58,807 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 23:15:58,807 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:15:58,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1198010358, now seen corresponding path program 27 times [2025-04-13 23:15:58,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:15:58,807 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509785432] [2025-04-13 23:15:58,807 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:15:58,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:15:58,811 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 3 equivalence classes. [2025-04-13 23:15:58,817 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 25 of 27 statements. [2025-04-13 23:15:58,817 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 23:15:58,817 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:15:59,001 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 23:15:59,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:15:59,001 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509785432] [2025-04-13 23:15:59,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509785432] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:15:59,001 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325496375] [2025-04-13 23:15:59,001 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:15:59,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:15:59,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:15:59,003 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 23:15:59,005 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 23:15:59,058 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 3 equivalence classes. [2025-04-13 23:15:59,075 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 25 of 27 statements. [2025-04-13 23:15:59,076 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 23:15:59,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:15:59,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 23:15:59,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:15:59,288 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 23:15:59,288 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:15:59,438 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:15:59,439 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 51 treesize of output 53 [2025-04-13 23:15:59,473 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 23:15:59,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325496375] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:15:59,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:15:59,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2025-04-13 23:15:59,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839523312] [2025-04-13 23:15:59,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:15:59,473 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-04-13 23:15:59,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:15:59,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-04-13 23:15:59,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2025-04-13 23:15:59,474 INFO L87 Difference]: Start difference. First operand 1373 states and 3856 transitions. Second operand has 28 states, 27 states have (on average 2.185185185185185) internal successors, (59), 27 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:16:00,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:16:00,330 INFO L93 Difference]: Finished difference Result 1458 states and 4028 transitions. [2025-04-13 23:16:00,330 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-04-13 23:16:00,330 INFO L79 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.185185185185185) internal successors, (59), 27 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-04-13 23:16:00,330 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:16:00,333 INFO L225 Difference]: With dead ends: 1458 [2025-04-13 23:16:00,333 INFO L226 Difference]: Without dead ends: 1389 [2025-04-13 23:16:00,334 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=884, Unknown=0, NotChecked=0, Total=992 [2025-04-13 23:16:00,334 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 56 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 23:16:00,334 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 0 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 23:16:00,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2025-04-13 23:16:00,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1375. [2025-04-13 23:16:00,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1375 states, 1374 states have (on average 2.8085880640465795) internal successors, (3859), 1374 states have internal predecessors, (3859), 0 states have call successors, (0), 0 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 23:16:00,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 3859 transitions. [2025-04-13 23:16:00,623 INFO L79 Accepts]: Start accepts. Automaton has 1375 states and 3859 transitions. Word has length 27 [2025-04-13 23:16:00,623 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:16:00,623 INFO L485 AbstractCegarLoop]: Abstraction has 1375 states and 3859 transitions. [2025-04-13 23:16:00,623 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.185185185185185) internal successors, (59), 27 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:16:00,623 INFO L278 IsEmpty]: Start isEmpty. Operand 1375 states and 3859 transitions. [2025-04-13 23:16:00,625 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 23:16:00,625 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:16:00,625 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:16:00,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2025-04-13 23:16:00,825 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,SelfDestructingSolverStorable38 [2025-04-13 23:16:00,825 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:16:00,825 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:16:00,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1193850846, now seen corresponding path program 28 times [2025-04-13 23:16:00,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:16:00,825 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907201878] [2025-04-13 23:16:00,826 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:16:00,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:16:00,829 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-04-13 23:16:00,834 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 23:16:00,834 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:16:00,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:16:00,977 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 23:16:00,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:16:00,977 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907201878] [2025-04-13 23:16:00,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907201878] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:16:00,977 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728100086] [2025-04-13 23:16:00,977 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:16:00,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:16:00,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:16:00,979 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 23:16:00,980 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 23:16:01,030 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-04-13 23:16:01,044 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 23:16:01,044 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:16:01,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:16:01,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-04-13 23:16:01,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:16:01,262 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:16:01,262 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:16:01,428 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:16:01,428 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 62 treesize of output 56 [2025-04-13 23:16:01,454 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 23:16:01,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728100086] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:16:01,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:16:01,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 10] total 28 [2025-04-13 23:16:01,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089769692] [2025-04-13 23:16:01,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:16:01,455 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-04-13 23:16:01,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:16:01,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-04-13 23:16:01,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=777, Unknown=0, NotChecked=0, Total=870 [2025-04-13 23:16:01,455 INFO L87 Difference]: Start difference. First operand 1375 states and 3859 transitions. Second operand has 30 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 29 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:16:02,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:16:02,460 INFO L93 Difference]: Finished difference Result 1485 states and 4067 transitions. [2025-04-13 23:16:02,460 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-04-13 23:16:02,460 INFO L79 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 29 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-04-13 23:16:02,460 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:16:02,463 INFO L225 Difference]: With dead ends: 1485 [2025-04-13 23:16:02,463 INFO L226 Difference]: Without dead ends: 1448 [2025-04-13 23:16:02,464 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=201, Invalid=1521, Unknown=0, NotChecked=0, Total=1722 [2025-04-13 23:16:02,464 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 83 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 23:16:02,464 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 0 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 23:16:02,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2025-04-13 23:16:02,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1381. [2025-04-13 23:16:02,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1380 states have (on average 2.807246376811594) internal successors, (3874), 1380 states have internal predecessors, (3874), 0 states have call successors, (0), 0 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 23:16:02,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 3874 transitions. [2025-04-13 23:16:02,775 INFO L79 Accepts]: Start accepts. Automaton has 1381 states and 3874 transitions. Word has length 27 [2025-04-13 23:16:02,775 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:16:02,775 INFO L485 AbstractCegarLoop]: Abstraction has 1381 states and 3874 transitions. [2025-04-13 23:16:02,775 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 29 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:16:02,775 INFO L278 IsEmpty]: Start isEmpty. Operand 1381 states and 3874 transitions. [2025-04-13 23:16:02,776 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 23:16:02,776 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:16:02,776 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:16:02,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2025-04-13 23:16:02,977 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,SelfDestructingSolverStorable39 [2025-04-13 23:16:02,977 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:16:02,977 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:16:02,977 INFO L85 PathProgramCache]: Analyzing trace with hash 387476820, now seen corresponding path program 29 times [2025-04-13 23:16:02,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:16:02,977 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752658944] [2025-04-13 23:16:02,978 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:16:02,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:16:02,982 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 3 equivalence classes. [2025-04-13 23:16:02,990 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 23:16:02,990 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 23:16:02,990 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:16:03,597 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:16:03,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:16:03,597 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752658944] [2025-04-13 23:16:03,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752658944] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:16:03,597 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81262066] [2025-04-13 23:16:03,598 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:16:03,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:16:03,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:16:03,599 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 23:16:03,600 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 23:16:03,650 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 3 equivalence classes. [2025-04-13 23:16:03,666 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 23:16:03,666 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 23:16:03,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:16:03,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-04-13 23:16:03,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:16:03,946 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:16:03,946 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:16:04,153 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:16:04,153 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 62 treesize of output 56 [2025-04-13 23:16:04,198 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 23:16:04,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81262066] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:16:04,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:16:04,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 10] total 36 [2025-04-13 23:16:04,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407321273] [2025-04-13 23:16:04,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:16:04,199 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-04-13 23:16:04,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:16:04,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-04-13 23:16:04,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2025-04-13 23:16:04,200 INFO L87 Difference]: Start difference. First operand 1381 states and 3874 transitions. Second operand has 38 states, 37 states have (on average 1.9189189189189189) internal successors, (71), 37 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 23:16:05,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:16:05,402 INFO L93 Difference]: Finished difference Result 1474 states and 4041 transitions. [2025-04-13 23:16:05,402 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-04-13 23:16:05,402 INFO L79 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.9189189189189189) internal successors, (71), 37 states have internal predecessors, (71), 0 states have call successors, (0), 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 27 [2025-04-13 23:16:05,402 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:16:05,405 INFO L225 Difference]: With dead ends: 1474 [2025-04-13 23:16:05,405 INFO L226 Difference]: Without dead ends: 1414 [2025-04-13 23:16:05,406 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=227, Invalid=2529, Unknown=0, NotChecked=0, Total=2756 [2025-04-13 23:16:05,406 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 121 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 23:16:05,406 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 0 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1451 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 23:16:05,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2025-04-13 23:16:05,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1381. [2025-04-13 23:16:05,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1380 states have (on average 2.8043478260869565) internal successors, (3870), 1380 states have internal predecessors, (3870), 0 states have call successors, (0), 0 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 23:16:05,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 3870 transitions. [2025-04-13 23:16:05,722 INFO L79 Accepts]: Start accepts. Automaton has 1381 states and 3870 transitions. Word has length 27 [2025-04-13 23:16:05,722 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:16:05,722 INFO L485 AbstractCegarLoop]: Abstraction has 1381 states and 3870 transitions. [2025-04-13 23:16:05,723 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.9189189189189189) internal successors, (71), 37 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 23:16:05,723 INFO L278 IsEmpty]: Start isEmpty. Operand 1381 states and 3870 transitions. [2025-04-13 23:16:05,724 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 23:16:05,724 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:16:05,724 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:16:05,730 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 23:16:05,924 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:16:05,925 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:16:05,925 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:16:05,925 INFO L85 PathProgramCache]: Analyzing trace with hash 992648288, now seen corresponding path program 30 times [2025-04-13 23:16:05,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:16:05,925 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380155830] [2025-04-13 23:16:05,925 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:16:05,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:16:05,929 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 27 statements into 3 equivalence classes. [2025-04-13 23:16:05,935 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 23:16:05,935 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 23:16:05,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:16:06,079 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 23:16:06,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:16:06,079 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380155830] [2025-04-13 23:16:06,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380155830] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:16:06,079 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804319123] [2025-04-13 23:16:06,079 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:16:06,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:16:06,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:16:06,081 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 23:16:06,082 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 23:16:06,134 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 27 statements into 3 equivalence classes. [2025-04-13 23:16:06,150 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 23:16:06,151 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 23:16:06,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:16:06,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-04-13 23:16:06,152 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:16:06,334 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 23:16:06,334 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:16:06,495 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:16:06,496 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 63 treesize of output 56 [2025-04-13 23:16:06,531 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 23:16:06,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804319123] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:16:06,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:16:06,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 10] total 27 [2025-04-13 23:16:06,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502949346] [2025-04-13 23:16:06,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:16:06,532 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-04-13 23:16:06,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:16:06,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-04-13 23:16:06,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=721, Unknown=0, NotChecked=0, Total=812 [2025-04-13 23:16:06,532 INFO L87 Difference]: Start difference. First operand 1381 states and 3870 transitions. Second operand has 29 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 28 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 23:16:07,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:16:07,340 INFO L93 Difference]: Finished difference Result 1433 states and 3953 transitions. [2025-04-13 23:16:07,340 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-13 23:16:07,341 INFO L79 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 28 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 27 [2025-04-13 23:16:07,341 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:16:07,344 INFO L225 Difference]: With dead ends: 1433 [2025-04-13 23:16:07,344 INFO L226 Difference]: Without dead ends: 1396 [2025-04-13 23:16:07,344 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=157, Invalid=1249, Unknown=0, NotChecked=0, Total=1406 [2025-04-13 23:16:07,344 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 49 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 23:16:07,344 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 0 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 23:16:07,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2025-04-13 23:16:07,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 1377. [2025-04-13 23:16:07,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1376 states have (on average 2.803779069767442) internal successors, (3858), 1376 states have internal predecessors, (3858), 0 states have call successors, (0), 0 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 23:16:07,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 3858 transitions. [2025-04-13 23:16:07,639 INFO L79 Accepts]: Start accepts. Automaton has 1377 states and 3858 transitions. Word has length 27 [2025-04-13 23:16:07,639 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:16:07,639 INFO L485 AbstractCegarLoop]: Abstraction has 1377 states and 3858 transitions. [2025-04-13 23:16:07,639 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 28 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 23:16:07,639 INFO L278 IsEmpty]: Start isEmpty. Operand 1377 states and 3858 transitions. [2025-04-13 23:16:07,640 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-04-13 23:16:07,640 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:16:07,640 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:16:07,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2025-04-13 23:16:07,841 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:16:07,841 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:16:07,841 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:16:07,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1152938572, now seen corresponding path program 31 times [2025-04-13 23:16:07,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:16:07,841 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118704485] [2025-04-13 23:16:07,841 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:16:07,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:16:07,846 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-04-13 23:16:07,848 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 23:16:07,848 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:16:07,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:16:07,918 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 23:16:07,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:16:07,918 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118704485] [2025-04-13 23:16:07,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118704485] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:16:07,918 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385137385] [2025-04-13 23:16:07,918 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:16:07,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:16:07,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:16:07,920 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:16:07,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2025-04-13 23:16:07,973 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-04-13 23:16:07,986 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 23:16:07,986 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:16:07,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:16:07,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-13 23:16:07,987 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:16:08,066 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 23:16:08,067 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:16:08,153 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 23:16:08,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385137385] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:16:08,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:16:08,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2025-04-13 23:16:08,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940558576] [2025-04-13 23:16:08,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:16:08,153 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 23:16:08,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:16:08,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 23:16:08,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2025-04-13 23:16:08,154 INFO L87 Difference]: Start difference. First operand 1377 states and 3858 transitions. Second operand has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:16:08,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:16:08,631 INFO L93 Difference]: Finished difference Result 1815 states and 4912 transitions. [2025-04-13 23:16:08,631 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-13 23:16:08,631 INFO L79 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2025-04-13 23:16:08,631 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:16:08,633 INFO L225 Difference]: With dead ends: 1815 [2025-04-13 23:16:08,633 INFO L226 Difference]: Without dead ends: 420 [2025-04-13 23:16:08,634 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2025-04-13 23:16:08,635 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 79 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:16:08,635 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 0 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 23:16:08,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2025-04-13 23:16:08,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 342. [2025-04-13 23:16:08,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 2.2991202346041058) internal successors, (784), 341 states have internal predecessors, (784), 0 states have call successors, (0), 0 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 23:16:08,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 784 transitions. [2025-04-13 23:16:08,733 INFO L79 Accepts]: Start accepts. Automaton has 342 states and 784 transitions. Word has length 28 [2025-04-13 23:16:08,733 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:16:08,733 INFO L485 AbstractCegarLoop]: Abstraction has 342 states and 784 transitions. [2025-04-13 23:16:08,733 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:16:08,733 INFO L278 IsEmpty]: Start isEmpty. Operand 342 states and 784 transitions. [2025-04-13 23:16:08,733 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-04-13 23:16:08,733 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:16:08,733 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:16:08,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2025-04-13 23:16:08,934 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:16:08,934 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:16:08,934 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:16:08,934 INFO L85 PathProgramCache]: Analyzing trace with hash 459258960, now seen corresponding path program 32 times [2025-04-13 23:16:08,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:16:08,934 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648974940] [2025-04-13 23:16:08,934 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:16:08,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:16:08,939 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-04-13 23:16:08,942 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 23:16:08,942 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:16:08,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:16:09,040 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 23:16:09,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:16:09,040 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648974940] [2025-04-13 23:16:09,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648974940] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:16:09,040 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050576736] [2025-04-13 23:16:09,040 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:16:09,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:16:09,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:16:09,042 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:16:09,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2025-04-13 23:16:09,100 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-04-13 23:16:09,115 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 23:16:09,115 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:16:09,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:16:09,116 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-13 23:16:09,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:16:09,246 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 23:16:09,246 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:16:09,394 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 23:16:09,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050576736] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:16:09,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:16:09,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 24 [2025-04-13 23:16:09,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687880188] [2025-04-13 23:16:09,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:16:09,395 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 23:16:09,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:16:09,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 23:16:09,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2025-04-13 23:16:09,395 INFO L87 Difference]: Start difference. First operand 342 states and 784 transitions. Second operand has 25 states, 25 states have (on average 2.4) internal successors, (60), 24 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 23:16:10,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:16:10,083 INFO L93 Difference]: Finished difference Result 696 states and 1603 transitions. [2025-04-13 23:16:10,084 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-13 23:16:10,084 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 24 states have internal predecessors, (60), 0 states have call successors, (0), 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 23:16:10,084 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:16:10,085 INFO L225 Difference]: With dead ends: 696 [2025-04-13 23:16:10,085 INFO L226 Difference]: Without dead ends: 467 [2025-04-13 23:16:10,086 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=344, Invalid=1062, Unknown=0, NotChecked=0, Total=1406 [2025-04-13 23:16:10,086 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 159 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 23:16:10,086 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 0 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 23:16:10,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2025-04-13 23:16:10,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 395. [2025-04-13 23:16:10,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 2.449238578680203) internal successors, (965), 394 states have internal predecessors, (965), 0 states have call successors, (0), 0 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 23:16:10,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 965 transitions. [2025-04-13 23:16:10,209 INFO L79 Accepts]: Start accepts. Automaton has 395 states and 965 transitions. Word has length 28 [2025-04-13 23:16:10,209 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:16:10,209 INFO L485 AbstractCegarLoop]: Abstraction has 395 states and 965 transitions. [2025-04-13 23:16:10,209 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 24 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 23:16:10,209 INFO L278 IsEmpty]: Start isEmpty. Operand 395 states and 965 transitions. [2025-04-13 23:16:10,210 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-04-13 23:16:10,210 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:16:10,210 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:16:10,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2025-04-13 23:16:10,410 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2025-04-13 23:16:10,410 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:16:10,410 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:16:10,410 INFO L85 PathProgramCache]: Analyzing trace with hash 400895908, now seen corresponding path program 33 times [2025-04-13 23:16:10,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:16:10,410 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533419688] [2025-04-13 23:16:10,411 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:16:10,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:16:10,415 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 3 equivalence classes. [2025-04-13 23:16:10,421 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 23:16:10,421 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 23:16:10,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:16:10,511 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 23:16:10,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:16:10,512 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533419688] [2025-04-13 23:16:10,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533419688] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:16:10,512 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141398285] [2025-04-13 23:16:10,512 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:16:10,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:16:10,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:16:10,513 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:16:10,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2025-04-13 23:16:10,579 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 3 equivalence classes. [2025-04-13 23:16:10,602 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 23:16:10,602 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 23:16:10,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:16:10,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-04-13 23:16:10,604 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:16:10,880 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:16:10,880 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:16:10,949 INFO L325 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-04-13 23:16:10,949 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 26 treesize of output 14 [2025-04-13 23:16:11,131 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:16:11,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141398285] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:16:11,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:16:11,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 14] total 32 [2025-04-13 23:16:11,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842186472] [2025-04-13 23:16:11,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:16:11,131 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-04-13 23:16:11,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:16:11,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-04-13 23:16:11,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=877, Unknown=0, NotChecked=0, Total=1056 [2025-04-13 23:16:11,132 INFO L87 Difference]: Start difference. First operand 395 states and 965 transitions. Second operand has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 32 states have internal predecessors, (73), 0 states have call successors, (0), 0 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 23:16:16,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:16:16,608 INFO L93 Difference]: Finished difference Result 3248 states and 8663 transitions. [2025-04-13 23:16:16,609 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2025-04-13 23:16:16,609 INFO L79 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 32 states have internal predecessors, (73), 0 states have call successors, (0), 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 23:16:16,609 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:16:16,614 INFO L225 Difference]: With dead ends: 3248 [2025-04-13 23:16:16,614 INFO L226 Difference]: Without dead ends: 3235 [2025-04-13 23:16:16,615 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8272 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3015, Invalid=18447, Unknown=0, NotChecked=0, Total=21462 [2025-04-13 23:16:16,615 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 590 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5964 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 5964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-04-13 23:16:16,616 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 0 Invalid, 6038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 5964 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-04-13 23:16:16,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2025-04-13 23:16:16,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 902. [2025-04-13 23:16:16,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 901 states have (on average 2.7635960044395116) internal successors, (2490), 901 states have internal predecessors, (2490), 0 states have call successors, (0), 0 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 23:16:16,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 2490 transitions. [2025-04-13 23:16:16,822 INFO L79 Accepts]: Start accepts. Automaton has 902 states and 2490 transitions. Word has length 29 [2025-04-13 23:16:16,822 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:16:16,822 INFO L485 AbstractCegarLoop]: Abstraction has 902 states and 2490 transitions. [2025-04-13 23:16:16,822 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 32 states have internal predecessors, (73), 0 states have call successors, (0), 0 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 23:16:16,823 INFO L278 IsEmpty]: Start isEmpty. Operand 902 states and 2490 transitions. [2025-04-13 23:16:16,823 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-04-13 23:16:16,823 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:16:16,823 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:16:16,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2025-04-13 23:16:17,023 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2025-04-13 23:16:17,024 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:16:17,024 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:16:17,024 INFO L85 PathProgramCache]: Analyzing trace with hash 387587432, now seen corresponding path program 34 times [2025-04-13 23:16:17,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:16:17,024 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111764173] [2025-04-13 23:16:17,024 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:16:17,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:16:17,028 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 29 statements into 2 equivalence classes. [2025-04-13 23:16:17,032 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 23:16:17,032 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:16:17,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:16:17,073 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 23:16:17,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:16:17,073 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111764173] [2025-04-13 23:16:17,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111764173] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:16:17,073 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747238133] [2025-04-13 23:16:17,073 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:16:17,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:16:17,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:16:17,075 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:16:17,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2025-04-13 23:16:17,137 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 29 statements into 2 equivalence classes. [2025-04-13 23:16:17,155 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 23:16:17,155 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:16:17,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:16:17,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 23:16:17,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:16:17,179 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 23:16:17,179 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:16:17,281 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 23:16:17,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747238133] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:16:17,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:16:17,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 8] total 12 [2025-04-13 23:16:17,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271826197] [2025-04-13 23:16:17,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:16:17,282 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 23:16:17,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:16:17,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 23:16:17,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2025-04-13 23:16:17,282 INFO L87 Difference]: Start difference. First operand 902 states and 2490 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 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 23:16:17,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:16:17,894 INFO L93 Difference]: Finished difference Result 1612 states and 4451 transitions. [2025-04-13 23:16:17,895 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 23:16:17,895 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 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 23:16:17,895 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:16:17,898 INFO L225 Difference]: With dead ends: 1612 [2025-04-13 23:16:17,898 INFO L226 Difference]: Without dead ends: 1414 [2025-04-13 23:16:17,898 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2025-04-13 23:16:17,899 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 89 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:16:17,899 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 0 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 23:16:17,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2025-04-13 23:16:18,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1325. [2025-04-13 23:16:18,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1325 states, 1324 states have (on average 2.830060422960725) internal successors, (3747), 1324 states have internal predecessors, (3747), 0 states have call successors, (0), 0 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 23:16:18,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 3747 transitions. [2025-04-13 23:16:18,188 INFO L79 Accepts]: Start accepts. Automaton has 1325 states and 3747 transitions. Word has length 29 [2025-04-13 23:16:18,188 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:16:18,188 INFO L485 AbstractCegarLoop]: Abstraction has 1325 states and 3747 transitions. [2025-04-13 23:16:18,188 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 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 23:16:18,188 INFO L278 IsEmpty]: Start isEmpty. Operand 1325 states and 3747 transitions. [2025-04-13 23:16:18,189 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-13 23:16:18,189 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:16:18,189 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:16:18,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2025-04-13 23:16:18,389 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2025-04-13 23:16:18,390 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:16:18,390 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:16:18,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1287213562, now seen corresponding path program 35 times [2025-04-13 23:16:18,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:16:18,390 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279883593] [2025-04-13 23:16:18,390 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:16:18,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:16:18,394 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 31 statements into 4 equivalence classes. [2025-04-13 23:16:18,401 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 23:16:18,401 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-04-13 23:16:18,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:16:19,236 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:16:19,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:16:19,236 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279883593] [2025-04-13 23:16:19,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279883593] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:16:19,236 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349511604] [2025-04-13 23:16:19,236 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:16:19,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:16:19,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:16:19,238 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:16:19,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2025-04-13 23:16:19,295 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 31 statements into 4 equivalence classes. [2025-04-13 23:16:19,313 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 23:16:19,314 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-04-13 23:16:19,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:16:19,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-04-13 23:16:19,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:16:19,988 INFO L325 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size [2025-04-13 23:16:19,988 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 47 treesize of output 23 [2025-04-13 23:16:20,112 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:16:20,113 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:16:20,974 INFO L325 Elim1Store]: treesize reduction 18, result has 82.5 percent of original size [2025-04-13 23:16:20,974 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 84 treesize of output 109 [2025-04-13 23:16:21,476 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:16:21,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349511604] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:16:21,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:16:21,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 60 [2025-04-13 23:16:21,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828014054] [2025-04-13 23:16:21,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:16:21,477 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2025-04-13 23:16:21,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:16:21,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2025-04-13 23:16:21,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=3428, Unknown=0, NotChecked=0, Total=3782 [2025-04-13 23:16:21,478 INFO L87 Difference]: Start difference. First operand 1325 states and 3747 transitions. Second operand has 62 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 61 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 23:16:39,449 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-04-13 23:17:07,834 WARN L532 Checker$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 23:17:12,885 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-04-13 23:17:29,967 WARN L532 Checker$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 23:19:08,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:19:08,085 INFO L93 Difference]: Finished difference Result 43606 states and 124505 transitions. [2025-04-13 23:19:08,085 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 500 states. [2025-04-13 23:19:08,085 INFO L79 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 61 states have internal predecessors, (90), 0 states have call successors, (0), 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 31 [2025-04-13 23:19:08,085 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:19:08,156 INFO L225 Difference]: With dead ends: 43606 [2025-04-13 23:19:08,156 INFO L226 Difference]: Without dead ends: 30961 [2025-04-13 23:19:08,189 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 538 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121058 ImplicationChecksByTransitivity, 89.2s TimeCoverageRelationStatistics Valid=43936, Invalid=247124, Unknown=0, NotChecked=0, Total=291060 [2025-04-13 23:19:08,189 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1106 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21121 mSolverCounterSat, 1105 mSolverCounterUnsat, 33 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 22259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1105 IncrementalHoareTripleChecker+Valid, 21121 IncrementalHoareTripleChecker+Invalid, 33 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.8s IncrementalHoareTripleChecker+Time [2025-04-13 23:19:08,190 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1106 Valid, 0 Invalid, 22259 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1105 Valid, 21121 Invalid, 33 Unknown, 0 Unchecked, 45.8s Time] [2025-04-13 23:19:08,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30961 states. [2025-04-13 23:19:11,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30961 to 10437. [2025-04-13 23:19:11,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10437 states, 10436 states have (on average 3.011786124952089) internal successors, (31431), 10436 states have internal predecessors, (31431), 0 states have call successors, (0), 0 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 23:19:11,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10437 states to 10437 states and 31431 transitions. [2025-04-13 23:19:11,487 INFO L79 Accepts]: Start accepts. Automaton has 10437 states and 31431 transitions. Word has length 31 [2025-04-13 23:19:11,488 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:19:11,488 INFO L485 AbstractCegarLoop]: Abstraction has 10437 states and 31431 transitions. [2025-04-13 23:19:11,488 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 61 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 23:19:11,488 INFO L278 IsEmpty]: Start isEmpty. Operand 10437 states and 31431 transitions. [2025-04-13 23:19:11,495 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-13 23:19:11,495 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:19:11,495 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:19:11,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2025-04-13 23:19:11,695 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2025-04-13 23:19:11,696 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:19:11,696 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:19:11,696 INFO L85 PathProgramCache]: Analyzing trace with hash -138428112, now seen corresponding path program 36 times [2025-04-13 23:19:11,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:19:11,696 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052357331] [2025-04-13 23:19:11,696 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:19:11,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:19:11,702 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 31 statements into 4 equivalence classes. [2025-04-13 23:19:11,712 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 23:19:11,712 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 23:19:11,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:19:12,636 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:19:12,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:19:12,636 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052357331] [2025-04-13 23:19:12,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052357331] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:19:12,636 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663669310] [2025-04-13 23:19:12,636 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:19:12,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:19:12,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:19:12,638 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:19:12,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2025-04-13 23:19:12,698 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 31 statements into 4 equivalence classes. [2025-04-13 23:19:12,729 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 23:19:12,730 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 23:19:12,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:19:12,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 60 conjuncts are in the unsatisfiable core [2025-04-13 23:19:12,732 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:19:13,537 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:19:13,537 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 10 [2025-04-13 23:19:13,648 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:19:13,648 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:19:14,322 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:19:14,322 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 74 treesize of output 106 [2025-04-13 23:19:14,770 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:19:14,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663669310] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:19:14,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:19:14,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 60 [2025-04-13 23:19:14,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188508223] [2025-04-13 23:19:14,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:19:14,771 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2025-04-13 23:19:14,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:19:14,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2025-04-13 23:19:14,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=3443, Unknown=0, NotChecked=0, Total=3782 [2025-04-13 23:19:14,772 INFO L87 Difference]: Start difference. First operand 10437 states and 31431 transitions. Second operand has 62 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 61 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 23:20:16,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:20:16,014 INFO L93 Difference]: Finished difference Result 60914 states and 177491 transitions. [2025-04-13 23:20:16,015 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 295 states. [2025-04-13 23:20:16,015 INFO L79 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 61 states have internal predecessors, (90), 0 states have call successors, (0), 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 31 [2025-04-13 23:20:16,015 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:20:16,142 INFO L225 Difference]: With dead ends: 60914 [2025-04-13 23:20:16,143 INFO L226 Difference]: Without dead ends: 37070 [2025-04-13 23:20:16,184 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 333 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41665 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=15409, Invalid=96481, Unknown=0, NotChecked=0, Total=111890 [2025-04-13 23:20:16,185 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 960 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11411 mSolverCounterSat, 708 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 708 IncrementalHoareTripleChecker+Valid, 11411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2025-04-13 23:20:16,185 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 0 Invalid, 12119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [708 Valid, 11411 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2025-04-13 23:20:16,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37070 states. [2025-04-13 23:20:21,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37070 to 15810. [2025-04-13 23:20:21,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15810 states, 15809 states have (on average 2.9205515845404517) internal successors, (46171), 15809 states have internal predecessors, (46171), 0 states have call successors, (0), 0 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 23:20:21,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15810 states to 15810 states and 46171 transitions. [2025-04-13 23:20:21,711 INFO L79 Accepts]: Start accepts. Automaton has 15810 states and 46171 transitions. Word has length 31 [2025-04-13 23:20:21,711 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:20:21,711 INFO L485 AbstractCegarLoop]: Abstraction has 15810 states and 46171 transitions. [2025-04-13 23:20:21,711 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 61 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 23:20:21,711 INFO L278 IsEmpty]: Start isEmpty. Operand 15810 states and 46171 transitions. [2025-04-13 23:20:21,717 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-13 23:20:21,717 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:20:21,717 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:20:21,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2025-04-13 23:20:21,917 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:20:21,917 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:20:21,918 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:20:21,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1055129120, now seen corresponding path program 37 times [2025-04-13 23:20:21,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:20:21,918 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982062309] [2025-04-13 23:20:21,918 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:20:21,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:20:21,922 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-04-13 23:20:21,928 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 23:20:21,928 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:20:21,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:20:22,900 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:20:22,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:20:22,900 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982062309] [2025-04-13 23:20:22,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982062309] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:20:22,901 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915363993] [2025-04-13 23:20:22,901 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:20:22,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:20:22,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:20:22,903 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:20:22,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2025-04-13 23:20:22,965 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-04-13 23:20:22,982 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 23:20:22,982 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:20:22,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:20:22,983 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 58 conjuncts are in the unsatisfiable core [2025-04-13 23:20:22,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:20:24,055 INFO L325 Elim1Store]: treesize reduction 62, result has 10.1 percent of original size [2025-04-13 23:20:24,055 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 61 treesize of output 24 [2025-04-13 23:20:24,130 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:20:24,130 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:20:24,924 INFO L325 Elim1Store]: treesize reduction 24, result has 78.0 percent of original size [2025-04-13 23:20:24,925 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 72 treesize of output 106 [2025-04-13 23:20:25,654 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:20:25,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915363993] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:20:25,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:20:25,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 60 [2025-04-13 23:20:25,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114472383] [2025-04-13 23:20:25,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:20:25,655 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2025-04-13 23:20:25,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:20:25,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2025-04-13 23:20:25,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=3429, Unknown=0, NotChecked=0, Total=3782 [2025-04-13 23:20:25,655 INFO L87 Difference]: Start difference. First operand 15810 states and 46171 transitions. Second operand has 62 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 61 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 23:20:49,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:20:49,414 INFO L93 Difference]: Finished difference Result 27755 states and 81563 transitions. [2025-04-13 23:20:49,415 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2025-04-13 23:20:49,415 INFO L79 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 61 states have internal predecessors, (90), 0 states have call successors, (0), 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 31 [2025-04-13 23:20:49,415 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:20:49,494 INFO L225 Difference]: With dead ends: 27755 [2025-04-13 23:20:49,494 INFO L226 Difference]: Without dead ends: 27672 [2025-04-13 23:20:49,501 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3784 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=1901, Invalid=15921, Unknown=0, NotChecked=0, Total=17822 [2025-04-13 23:20:49,501 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 409 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4410 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 4410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-04-13 23:20:49,501 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 0 Invalid, 4600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 4410 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-04-13 23:20:49,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27672 states. [2025-04-13 23:20:56,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27672 to 22442. [2025-04-13 23:20:56,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22442 states, 22441 states have (on average 2.973084978387772) internal successors, (66719), 22441 states have internal predecessors, (66719), 0 states have call successors, (0), 0 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 23:20:56,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22442 states to 22442 states and 66719 transitions. [2025-04-13 23:20:56,756 INFO L79 Accepts]: Start accepts. Automaton has 22442 states and 66719 transitions. Word has length 31 [2025-04-13 23:20:56,756 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:20:56,756 INFO L485 AbstractCegarLoop]: Abstraction has 22442 states and 66719 transitions. [2025-04-13 23:20:56,756 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 61 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 23:20:56,756 INFO L278 IsEmpty]: Start isEmpty. Operand 22442 states and 66719 transitions. [2025-04-13 23:20:56,764 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-13 23:20:56,764 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:20:56,764 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:20:56,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2025-04-13 23:20:56,964 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2025-04-13 23:20:56,964 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:20:56,965 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:20:56,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1837566124, now seen corresponding path program 38 times [2025-04-13 23:20:56,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:20:56,965 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450260180] [2025-04-13 23:20:56,965 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:20:56,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:20:56,969 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-04-13 23:20:56,975 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 23:20:56,976 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:20:56,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:20:57,744 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:20:57,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:20:57,744 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450260180] [2025-04-13 23:20:57,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450260180] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:20:57,744 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405763957] [2025-04-13 23:20:57,744 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:20:57,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:20:57,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:20:57,746 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:20:57,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2025-04-13 23:20:57,812 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-04-13 23:20:57,829 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 23:20:57,829 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:20:57,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:20:57,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 57 conjuncts are in the unsatisfiable core [2025-04-13 23:20:57,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:20:58,793 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:20:58,794 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:20:59,568 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:20:59,568 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 74 treesize of output 106 [2025-04-13 23:21:00,057 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:21:00,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405763957] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:21:00,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:21:00,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 60 [2025-04-13 23:21:00,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700911127] [2025-04-13 23:21:00,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:21:00,058 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2025-04-13 23:21:00,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:21:00,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2025-04-13 23:21:00,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=3470, Unknown=0, NotChecked=0, Total=3782 [2025-04-13 23:21:00,059 INFO L87 Difference]: Start difference. First operand 22442 states and 66719 transitions. Second operand has 62 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 61 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 23:23:04,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:23:04,860 INFO L93 Difference]: Finished difference Result 134390 states and 394365 transitions. [2025-04-13 23:23:04,861 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 270 states. [2025-04-13 23:23:04,861 INFO L79 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 61 states have internal predecessors, (90), 0 states have call successors, (0), 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 31 [2025-04-13 23:23:04,861 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:23:05,253 INFO L225 Difference]: With dead ends: 134390 [2025-04-13 23:23:05,253 INFO L226 Difference]: Without dead ends: 109423 [2025-04-13 23:23:05,316 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30672 ImplicationChecksByTransitivity, 48.8s TimeCoverageRelationStatistics Valid=14420, Invalid=85752, Unknown=0, NotChecked=0, Total=100172 [2025-04-13 23:23:05,316 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 987 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11403 mSolverCounterSat, 794 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 794 IncrementalHoareTripleChecker+Valid, 11403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2025-04-13 23:23:05,316 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 0 Invalid, 12197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [794 Valid, 11403 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2025-04-13 23:23:05,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109423 states. [2025-04-13 23:23:27,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109423 to 60914. [2025-04-13 23:23:27,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60914 states, 60913 states have (on average 2.9602712064748085) internal successors, (180319), 60913 states have internal predecessors, (180319), 0 states have call successors, (0), 0 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 23:23:28,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60914 states to 60914 states and 180319 transitions. [2025-04-13 23:23:28,178 INFO L79 Accepts]: Start accepts. Automaton has 60914 states and 180319 transitions. Word has length 31 [2025-04-13 23:23:28,178 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:23:28,178 INFO L485 AbstractCegarLoop]: Abstraction has 60914 states and 180319 transitions. [2025-04-13 23:23:28,178 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 61 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 23:23:28,178 INFO L278 IsEmpty]: Start isEmpty. Operand 60914 states and 180319 transitions. [2025-04-13 23:23:28,186 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-13 23:23:28,186 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:23:28,186 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:23:28,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2025-04-13 23:23:28,386 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2025-04-13 23:23:28,386 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:23:28,387 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:23:28,387 INFO L85 PathProgramCache]: Analyzing trace with hash -354431186, now seen corresponding path program 39 times [2025-04-13 23:23:28,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:23:28,387 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189864526] [2025-04-13 23:23:28,387 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:23:28,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:23:28,393 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 3 equivalence classes. [2025-04-13 23:23:28,399 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 23:23:28,399 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 23:23:28,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:23:29,430 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:23:29,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:23:29,430 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189864526] [2025-04-13 23:23:29,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189864526] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:23:29,430 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399977185] [2025-04-13 23:23:29,430 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:23:29,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:23:29,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:23:29,433 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:23:29,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2025-04-13 23:23:29,495 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 3 equivalence classes. [2025-04-13 23:23:29,515 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 23:23:29,515 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 23:23:29,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:23:29,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-04-13 23:23:29,517 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:23:30,544 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-13 23:23:30,545 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-13 23:23:30,545 INFO L172 IndexEqualityManager]: detected equality via solver [2025-04-13 23:23:30,547 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:23:30,547 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 16 [2025-04-13 23:23:30,642 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:23:30,642 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:23:31,483 INFO L325 Elim1Store]: treesize reduction 18, result has 82.5 percent of original size [2025-04-13 23:23:31,484 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 85 treesize of output 109 [2025-04-13 23:23:32,073 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:23:32,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399977185] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:23:32,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:23:32,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 60 [2025-04-13 23:23:32,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237168292] [2025-04-13 23:23:32,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:23:32,074 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2025-04-13 23:23:32,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:23:32,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2025-04-13 23:23:32,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=3424, Unknown=0, NotChecked=0, Total=3782 [2025-04-13 23:23:32,075 INFO L87 Difference]: Start difference. First operand 60914 states and 180319 transitions. Second operand has 62 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 61 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 23:24:54,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:24:54,045 INFO L93 Difference]: Finished difference Result 97700 states and 287421 transitions. [2025-04-13 23:24:54,046 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2025-04-13 23:24:54,046 INFO L79 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 61 states have internal predecessors, (90), 0 states have call successors, (0), 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 31 [2025-04-13 23:24:54,046 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:24:54,420 INFO L225 Difference]: With dead ends: 97700 [2025-04-13 23:24:54,420 INFO L226 Difference]: Without dead ends: 97641 [2025-04-13 23:24:54,451 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10060 ImplicationChecksByTransitivity, 26.6s TimeCoverageRelationStatistics Valid=5616, Invalid=31826, Unknown=0, NotChecked=0, Total=37442 [2025-04-13 23:24:54,451 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 717 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7919 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 7919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2025-04-13 23:24:54,452 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 0 Invalid, 8416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [497 Valid, 7919 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2025-04-13 23:24:54,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97641 states. [2025-04-13 23:25:19,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97641 to 61240. [2025-04-13 23:25:19,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61240 states, 61239 states have (on average 2.9649079834745833) internal successors, (181568), 61239 states have internal predecessors, (181568), 0 states have call successors, (0), 0 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 23:25:19,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61240 states to 61240 states and 181568 transitions. [2025-04-13 23:25:19,418 INFO L79 Accepts]: Start accepts. Automaton has 61240 states and 181568 transitions. Word has length 31 [2025-04-13 23:25:19,418 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:25:19,418 INFO L485 AbstractCegarLoop]: Abstraction has 61240 states and 181568 transitions. [2025-04-13 23:25:19,418 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 61 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 23:25:19,419 INFO L278 IsEmpty]: Start isEmpty. Operand 61240 states and 181568 transitions. [2025-04-13 23:25:19,427 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-13 23:25:19,427 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:25:19,427 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:25:19,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2025-04-13 23:25:19,628 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2025-04-13 23:25:19,628 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:25:19,628 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:25:19,628 INFO L85 PathProgramCache]: Analyzing trace with hash -676115658, now seen corresponding path program 40 times [2025-04-13 23:25:19,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:25:19,628 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774596645] [2025-04-13 23:25:19,628 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:25:19,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:25:19,635 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-04-13 23:25:19,643 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 23:25:19,643 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:25:19,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:25:20,384 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:25:20,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:25:20,384 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774596645] [2025-04-13 23:25:20,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774596645] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:25:20,384 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693337895] [2025-04-13 23:25:20,384 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:25:20,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:25:20,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:25:20,386 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:25:20,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2025-04-13 23:25:20,458 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-04-13 23:25:20,476 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 23:25:20,476 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:25:20,476 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:25:20,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-04-13 23:25:20,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:25:21,748 INFO L325 Elim1Store]: treesize reduction 58, result has 10.8 percent of original size [2025-04-13 23:25:21,749 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 60 treesize of output 24 [2025-04-13 23:25:21,813 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:25:21,813 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:25:22,492 INFO L325 Elim1Store]: treesize reduction 24, result has 78.0 percent of original size [2025-04-13 23:25:22,493 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 72 treesize of output 106 [2025-04-13 23:25:23,052 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:25:23,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693337895] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:25:23,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:25:23,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 60 [2025-04-13 23:25:23,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005036659] [2025-04-13 23:25:23,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:25:23,052 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2025-04-13 23:25:23,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:25:23,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2025-04-13 23:25:23,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=446, Invalid=3336, Unknown=0, NotChecked=0, Total=3782 [2025-04-13 23:25:23,053 INFO L87 Difference]: Start difference. First operand 61240 states and 181568 transitions. Second operand has 62 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 61 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 23:26:42,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:26:42,980 INFO L93 Difference]: Finished difference Result 78897 states and 231081 transitions. [2025-04-13 23:26:42,980 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2025-04-13 23:26:42,981 INFO L79 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 61 states have internal predecessors, (90), 0 states have call successors, (0), 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 31 [2025-04-13 23:26:42,981 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:26:43,270 INFO L225 Difference]: With dead ends: 78897 [2025-04-13 23:26:43,271 INFO L226 Difference]: Without dead ends: 78592 [2025-04-13 23:26:43,297 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24785 ImplicationChecksByTransitivity, 26.7s TimeCoverageRelationStatistics Valid=9616, Invalid=59290, Unknown=0, NotChecked=0, Total=68906 [2025-04-13 23:26:43,298 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1234 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8097 mSolverCounterSat, 697 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 697 IncrementalHoareTripleChecker+Valid, 8097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2025-04-13 23:26:43,298 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1234 Valid, 0 Invalid, 8794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [697 Valid, 8097 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2025-04-13 23:26:43,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78592 states. [2025-04-13 23:27:09,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78592 to 66184. [2025-04-13 23:27:09,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66184 states, 66183 states have (on average 2.984150008310291) internal successors, (197500), 66183 states have internal predecessors, (197500), 0 states have call successors, (0), 0 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 23:27:09,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66184 states to 66184 states and 197500 transitions. [2025-04-13 23:27:09,840 INFO L79 Accepts]: Start accepts. Automaton has 66184 states and 197500 transitions. Word has length 31 [2025-04-13 23:27:09,841 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:27:09,841 INFO L485 AbstractCegarLoop]: Abstraction has 66184 states and 197500 transitions. [2025-04-13 23:27:09,841 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 61 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 23:27:09,841 INFO L278 IsEmpty]: Start isEmpty. Operand 66184 states and 197500 transitions. [2025-04-13 23:27:09,850 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-13 23:27:09,850 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:27:09,850 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:27:09,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2025-04-13 23:27:10,050 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:27:10,050 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:27:10,051 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:27:10,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1323106666, now seen corresponding path program 41 times [2025-04-13 23:27:10,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:27:10,051 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797096235] [2025-04-13 23:27:10,051 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:27:10,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:27:10,055 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 31 statements into 3 equivalence classes. [2025-04-13 23:27:10,061 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 23:27:10,061 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 23:27:10,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:27:11,108 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:27:11,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:27:11,108 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797096235] [2025-04-13 23:27:11,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797096235] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:27:11,108 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889990741] [2025-04-13 23:27:11,108 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:27:11,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:27:11,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:27:11,110 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:27:11,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2025-04-13 23:27:11,174 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 31 statements into 3 equivalence classes. [2025-04-13 23:27:11,191 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 23:27:11,191 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 23:27:11,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:27:11,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 62 conjuncts are in the unsatisfiable core [2025-04-13 23:27:11,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:27:11,254 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-04-13 23:27:11,288 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-04-13 23:27:11,322 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-04-13 23:27:12,207 INFO L325 Elim1Store]: treesize reduction 54, result has 50.5 percent of original size [2025-04-13 23:27:12,207 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 68 treesize of output 72 [2025-04-13 23:27:12,468 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:27:12,468 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:27:21,890 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 196 treesize of output 184 [2025-04-13 23:27:22,022 INFO L325 Elim1Store]: treesize reduction 24, result has 78.0 percent of original size [2025-04-13 23:27:22,023 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 162779 treesize of output 144404 Received shutdown request... [2025-04-13 23:27:22,748 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-13 23:27:22,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2025-04-13 23:27:22,759 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 23:27:22,761 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-13 23:27:22,948 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:27:22,949 WARN L610 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 32 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-20-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-36-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 context. [2025-04-13 23:27:22,951 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-13 23:27:22,951 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-13 23:27:22,958 INFO L422 BasicCegarLoop]: Path program histogram: [41, 6, 2, 1, 1, 1, 1] [2025-04-13 23:27:22,963 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 23:27:22,963 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 23:27:22,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 11:27:22 BasicIcfg [2025-04-13 23:27:22,971 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 23:27:22,972 INFO L158 Benchmark]: Toolchain (without parser) took 831467.08ms. Allocated memory was 142.6MB in the beginning and 3.8GB in the end (delta: 3.7GB). Free memory was 98.9MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 3.5GB. Max. memory is 8.0GB. [2025-04-13 23:27:22,972 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 159.4MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 23:27:22,972 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.63ms. Allocated memory is still 142.6MB. Free memory was 98.9MB in the beginning and 84.1MB in the end (delta: 14.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-13 23:27:22,972 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.57ms. Allocated memory is still 142.6MB. Free memory was 84.1MB in the beginning and 81.9MB in the end (delta: 2.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 23:27:22,974 INFO L158 Benchmark]: Boogie Preprocessor took 39.63ms. Allocated memory is still 142.6MB. Free memory was 81.9MB in the beginning and 79.9MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 23:27:22,974 INFO L158 Benchmark]: IcfgBuilder took 536.22ms. Allocated memory is still 142.6MB. Free memory was 79.9MB in the beginning and 29.5MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 8.0GB. [2025-04-13 23:27:22,974 INFO L158 Benchmark]: TraceAbstraction took 830625.34ms. Allocated memory was 142.6MB in the beginning and 3.8GB in the end (delta: 3.7GB). Free memory was 29.5MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 3.4GB. Max. memory is 8.0GB. [2025-04-13 23:27:22,976 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 159.4MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 228.63ms. Allocated memory is still 142.6MB. Free memory was 98.9MB in the beginning and 84.1MB in the end (delta: 14.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.57ms. Allocated memory is still 142.6MB. Free memory was 84.1MB in the beginning and 81.9MB in the end (delta: 2.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 39.63ms. Allocated memory is still 142.6MB. Free memory was 81.9MB in the beginning and 79.9MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 8.0GB. * IcfgBuilder took 536.22ms. Allocated memory is still 142.6MB. Free memory was 79.9MB in the beginning and 29.5MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 8.0GB. * TraceAbstraction took 830625.34ms. Allocated memory was 142.6MB in the beginning and 3.8GB in the end (delta: 3.7GB). Free memory was 29.5MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 3.4GB. 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: 98]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while NwaCegarLoop was analyzing trace of length 32 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-20-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-36-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 context. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while NwaCegarLoop was analyzing trace of length 32 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-20-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-36-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 context. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while NwaCegarLoop was analyzing trace of length 32 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-20-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-36-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 33 locations, 41 edges, 3 error locations. Started 1 CEGAR loops. OverallTime: 830.5s, OverallIterations: 53, TraceHistogramMax: 4, PathProgramHistogramMax: 41, EmptinessCheckTime: 0.1s, AutomataDifference: 645.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 mSolverCounterUnknown, 14464 SdHoareTripleChecker+Valid, 101.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14464 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 93.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8559 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 143683 IncrementalHoareTripleChecker+Invalid, 152275 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8559 mSolverCounterUnsat, 0 mSDtfsCounter, 143683 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5806 GetRequests, 1338 SyntacticMatches, 5 SemanticMatches, 4463 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306483 ImplicationChecksByTransitivity, 300.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66184occurred in iteration=52, InterpolantAutomatonStates: 3528, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 96.6s AutomataMinimizationTime, 52 MinimizatonAttempts, 160749 StatesRemovedByMinimization, 48 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 61.9s InterpolantComputationTime, 2515 NumberOfCodeBlocks, 2491 NumberOfCodeBlocksAsserted, 206 NumberOfCheckSat, 3577 ConstructedInterpolants, 125 QuantifiedInterpolants, 75176 SizeOfPredicates, 547 NumberOfNonLiveVariables, 8738 ConjunctsInSsa, 1745 ConjunctsInUnsatCore, 144 InterpolantComputations, 7 PerfectInterpolantSequences, 379/1620 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